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ISL3034E, ISL3035E, ISL3036E
Data Sheet March 31, 2009 FN6492.0
4-Channel And 6-Channel High Speed, Auto-direction Sensing Logic Level Translators
The ISL3034E, ISL3035E, ISL3036E 4- and 6-channel bi-directional, auto-direction sensing, level translators provide the required level shifting in multi-voltage systems at data transfer rates up to 100Mbps. The auto-direction sensing feature makes the ISL3034E, ISL3035E, ISL3036E ideally suited for memory-card level translation (or for generic four to six channel level translation) especially if bit-by-bit direction control is desired. The VCC and VL supply voltages set the logic levels on either side of the device. Logic signals present on the IC's VL side appear as higher voltage logic signals on the IC's VCC side and vice versa. The ISL3035E features a CLK_RET output that returns the same clock signal applied to the CLK_VL input, but with timing that mimics the data returning from the I/OVCC inputs. The ISL3034E, ISL3035E, ISL3036E operate at full speed with external input drivers that source as little as 4mA output current. Each I/O channel is pulled up to VCC or VL by an internal 30A current source, allowing the ISL3034E, ISL3035E, ISL3036E to be driven by either push-pull or open-drain drivers. The ISL3034E and ISL3036E include an enable (EN) input that when driven low places the IC into a low-power shutdown mode, with all I/O lines tri-stated. All versions feature an automatic shutdown mode, that places the part in the same shutdown state when VCC is less than VL. The states of I/OVCC and I/OVL during shutdown are chosen by selecting the appropriate product (see Table 1). The ISL3034E, ISL3035E, ISL3036E operate with VCC voltages from +2.2V to +3.6V and VL voltages from +1.35V to +3.2V, making them ideal for data transfer between low-voltage microcontrollers or ASICs and higher voltage components.
TABLE 1. SUMMARY OF FEATURES NUMBER DATA OF EN RATE PART NUMBER (Mbps) CHANNELS PIN? ISL3034E ISL3035E ISL3036E 100 100 100 6 6 4 YES NO YES I/OVLSHDN STATE 16.5k to VL 75k to VL 16.5k to VL I/OVCC SHDN STATE 16.5k to VCC High Impedance 16.5k to VCC
Features
* Best-In-Class ESD Protection: 15kV IEC61000-4-2 ESD Protection on ALL Input, Output, and I/O Lines * 100Mbps Guaranteed Data Rate * Four (ISL3036) or Six (ISL3034, ISL3035) Bi-directional Channels * Auto-direction Sensing Eliminates Direction Control Logic Pins * Enable Input (ISL3034E, ISL3036E) for Logic Control of Low Power SHDN Mode * Clock Return Output (ISL3035E) * Compatible with 4mA Input Drivers or Larger * +1.35V VL +3.2V and +2.2V VCC +3.6V Supply Voltage Range * Pb-Free (RoHS Compliant) * 16Ld TQFN (2.6mmx1.8mm), 16 Ld TQFN (3mmx3mm), and 14 Ld QFN (3.5mmx3.5mm) Packages
Applications
* Simplifies the Interface Between Two Logic ICs Operating at Different Supply Voltages * SD Card and MiniSD Card Level Translation * MMC (Multi Media Card) Level Translation * Memory Stick Card Level Translation
Typical Operating Circuit
+1.8V 0.1F 0.1F 1F +3.3V
+1.8V SYSTEM CONTROLLER DAT3 DAT2 DAT1 DAT0 CMD CLOCK CLOCK_IN
VL VCC ISL3035E
+3.3V SD CARD DAT3 DAT2 DAT1 DAT0 CMD CLOCK
I/OVL I/OVL I/OVL I/OVL I/OVL
I/OVCC I/OVCC I/OVCC I/OVCC I/OVCC
CLK_VL CLK_VCC CLK_RET
GND
GND
GND
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2009. All Rights Reserved All other trademarks mentioned are the property of their respective owners.
ISL3034E, ISL3035E, ISL3036E Ordering Information
PART NUMBER ISL3034EIRTZ (Note 1) ISL3034EIRTZ-T (Notes 1, 3) ISL3034EIRUZ-T (Notes 2, 3) ISL3035EIRTZ (Note 1) ISL3035EIRTZ-T (Notes 1, 3) ISL3035EIRUZ-T (Notes 2, 3) ISL3036EIRZ-T (Notes 1, 3) ISL3036EIRUZ-T (Notes 2, 3) NOTES: 1. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD020. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and NiPdAu plate - e4 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. Please refer to TB347 for details on reel specifications. 34TZ 34TZ GAE 35TZ 35TZ GAF 36EZ GAK PART MARKING TEMP. RANGE (C) -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 PACKAGE (Pb-free) 16 Ld TQFN 16 Ld TQFN 16 Ld TQFN 16 Ld TQFN 16 Ld TQFN 16 Ld TQFN 14 Ld QFN 16 Ld TQFN PKG. DWG. # L16.3x3A L16.3x3A L16.2.6x1.8A L16.3x3A L16.3x3A L16.2.6x1.8A L14.3.5x3.5 L16.2.6x1.8A
Pinouts
ISL3034E (16 LD TQFN) TOP VIEW
15 I/OVCC1 14 I/OVCC6 16 VCC 13 GND
ISL3034E (16 LD TQFN) TOP VIEW
15 I/OVCC1 14 I/OVCC6 I/OVCC4 7 13 GND 12 I/OVL6 11 EN 10 I/OVL5 9 I/OVL4 I/OVCC2 5 I/OVCC3 6 I/OVCC5 8
I/OVL1 1 VL 2 I/OVL2 3 I/OVL3 4 I/OVCC5 8 I/OVCC2 5 I/OVCC3 6 I/OVCC4 7 THERMAL PAD
12 I/OVL6 11 EN 10 I/OVL5 9 I/OVL4 I/OVL1 1 VL 2 I/OVL2 3 I/OVL3 4
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16 VCC
FN6492.0 March 31, 2009
ISL3034E, ISL3035E, ISL3036E Pinouts (Continued)
ISL3035E (16 LD TQFN) TOP VIEW
14 CLK_VCC 15 I/OVCC1
ISL3035E (16 LD TQFN) TOP VIEW
14 CLK_VCC I/OVCC4 7 14 NC NC 7 15 I/OVCC1
I/OVL1 1 VL 2 I/OVL2 3 I/OVL3 4 I/OVCC2 5 I/OVCC3 6 I/OVCC4 7 I/OVCC5 8 THERMAL PAD
16 VCC
13 GND
12 CLK_VL 11 CLK_RET 10 I/OVL5 9 I/OVL4
I/OVL1 1 VL 2 I/OVL2 3 I/OVL3 4 I/OVCC2 5 I/OVCC3 6
13 GND 12 CLK_VL 11 CLK_RET 10 I/OVL5 9 I/OVL4 I/OVCC5 8 13 VCC 12 I/OVCC1 11 I/OVCC2 10 I/OVCC3 9 I/OVCC4 EN 8
ISL3036E (14 LD QFN) TOP VIEW
VCC VL
ISL3036E (16 LD TQFN) TOP VIEW
15 NC NC 6 16 VL 13 I/OVCC1 I/OVL1 1 I/OVL2 2 I/OVL3 3 I/OVL4 4 GND 5 12 I/OVCC2 11 I/OVCC3 10 I/OVCC4 9 NC
1 I/OVL1 2 I/OVL2 3 I/OVL3 4 I/OVL4 5 NC 6 7 GND THERMAL PAD
14
8 EN
Pin Descriptions
NAME VCC VL GND EN I/OVCCx CLK_VCC I/OVLx CLK_VL CLK_RET FUNCTION VCC power supply, +2.2V to +3.6V. Decouple VCC to ground with a 0.1F capacitor. VL logic supply, +1.35V to +3.2V. Decouple VL to ground with a 0.1F capacitor. Ground Pin 15kV IEC61000 ESD Protected Enable Input. Logic "0" puts the device in shutdown. Logic "1" enables the device. 15kV IEC61000 ESD Protected Input/Output channel referenced to VCC. 15kV IEC61000 ESD Protected Input/Output clock channel referenced to VCC. 15kV IEC61000 ESD Protected Input/Output channel referenced to VL. IEC61000 ESD Protected Input clock channel referenced to VL. IEC61000 ESD Protected Output clock channel referenced to VL. ISL3035E only ISL3035E only ISL3035E only ISL3034E and ISL3036E only NOTES For normal operation, VCC > VL. For normal operation, VCC > VL.
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16 VCC
FN6492.0 March 31, 2009
ISL3034E, ISL3035E, ISL3036E
Absolute Maximum Ratings
(All voltages referenced to GND.) VCC, VL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +4V I/OVCC_, CLK_VCC . . . . . . . . . . . . . . . . . . . . -0.3V to (VCC + 0.3V) I/OVL_, CLK_VL, CLK_RET. . . . . . . . . . . . . . . -0.3V to (VL + 0.3V) EN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +4V Short-Circuit Duration I/OVL_, I/OVCC_, CLK_VCC, CLK_RET to GND. . . . . . . . . . . . . . . . . . . . . . . . . . Continuous
Thermal Information
Thermal Resistance (Typical) JA (C/W) JC (C/W) 14 Ld QFN Package (Notes 4, 5). . . . . 46 6 16 Ld TQFN Package (Notes 4, 5). . . . 74 10 16 Ld TQFN Package (Note 4) . . . . . 93 44 Maximum Storage Temperature Range . . . . . . . . . -65C to +150C Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . +150C Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Operating Conditions
Operating Temperature Range . . . . . . . . . . . . . . . . -40C to +85C
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty.
NOTES: 4. JA is measured with the component mounted on a high effective thermal conductivity test board in free air, and with "direct attach" features for the QFN and TQFN. See Tech Brief TB379 for details. 5. For JC, the "case temp" location is the center of the exposed metal pad on the package underside.
Electrical Specifications
VCC = +2.2V to +3.6V, VL = +1.35V to +3.2V, EN = VL, unless otherwise noted. Typical values are at VCC = +3.3V, VL = +1.8V and TA = +25C. (Note 6). SYMBOL TEST CONDITIONS TEMP (C) MIN (Note 8) TYP MAX (Note 8) UNITS
PARAMETER POWER SUPPLIES VL Supply Range VCC Supply Range VCC Quiescent Supply Current VL Quiescent Supply Current VCC Shutdown Supply Current
VL VCC ICC IVL ICCSD
(Note 6) (Note 6) I/OVCC = VCC, I/OVL = VL I/OVCC = VCC, I/OVL = VL EN = GND or VL > VCC + 0.7V; ISL3034E and ISL3036E Only VL > VCC + 0.7V; ISL3035E Only
Full Full Full Full Full Full Full Full Full Full Full Full Full Full
1.35 2.2 -0.2 -0.2 10 45
18 12 0.1
3.2 3.6 30 18 2.5 2.5 4 4 2 1
V V A A A A A A A A V V k k
VL Shutdown Supply Current
ILSD
EN = GND or VL > VCC + 0.7V; ISL3034E and ISL3036E Only VL > VCC + 0.7V; ISL3035E Only
I/OVCC, CLK_VCC Tri-State Leakage Current EN Input Current VL - VCC Shutdown Threshold High VL - VCC Shutdown Threshold Low I/OVCC, I/OVL Pull-up Resistance During Shutdown I/OVL, CLK_VL , CLK_RET Pull-up Resistance During Shutdown I/OVL_, CLK_VL, CLK_RET Pullup Current I/OVCC_, CLK_VCC Pull-up Current I/OVL to I/OVCC DC Resistance
ILKG IIN_EN VTH_H VTH_L
VL > VCC + 0.7V, VO = 0V or VCC, ISL3035E Only ISL3034E and ISL3036E Only VCC rising VCC falling
0.05VL 0.1VL 16.5 75
0.7 0.7 23 105
RPU_SD1 EN = GND; ISL3034E and ISL3036E Only RPU_SD2 VL > (VCC + 0.7V); ISL3035E Only
IVL_PU
EN = VL, I/OVL = GND
Full Full Full
20 20 -
3
75 75 -
A A k
IVCC_PU EN = VL, I/OVCC = GND RON
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FN6492.0 March 31, 2009
ISL3034E, ISL3035E, ISL3036E
Electrical Specifications
VCC = +2.2V to +3.6V, VL = +1.35V to +3.2V, EN = VL, unless otherwise noted. Typical values are at VCC = +3.3V, VL = +1.8V and TA = +25C. (Note 6). (Continued) SYMBOL TEST CONDITIONS TEMP (C) MIN (Note 8) TYP MAX (Note 8) UNITS
PARAMETER ESD PROTECTION All Input and I/O Pins From Pin to GND
IEC61000-4-2 Air-Gap Discharge IEC61000-4-2 Contact Discharge Human Body Model
25 25 25 25 25
-
15 >9 15 >12 1300
-
kV kV kV kV V
All Pins
HBM, per JEDEC Machine Model, per JEDEC
LOGIC-LEVEL THRESHOLDS I/OVL, CLK_VL Input Voltage High Threshold I/OVL, CLK_VL Input Voltage Low Threshold I/OVCC, CLK_VCC Input Voltage High Threshold I/OVCC, CLK_VCC Input Voltage Low Threshold EN Input Voltage High Threshold EN Input Voltage Low Threshold I/OVL, CLK_RET Output Voltage High I/OVL, CLK_RET Output Voltage Low I/OVCC, CLK_VCC Output Voltage High I/OVCC, CLK_VCC Output Voltage Low VIHL VILL VIHC VILC VIH VIL VOHL VOLL VOHC VOLC IOH = 20A, I/OVCC VCC - 0.4V IOL = 20A, I/OVCC 0.2V IOH = 20A, I/OVL VL - 0.2V IOL = 20A, I/OVL 0.15V (Note 7) (Note 7) (Note 7) (Note 7) Full Full Full Full Full Full Full Full Full Full 0.15 0.2 0.4 2/3 VL 2/3 VCC VL - 0.2 VCC - 0.4 VL - 0.4 1/3 VL 1/3 VCC V V V V V V V V V V
RISE/FALL TIME ACCELERATOR STAGE Accelerator Pulse Duration On falling edge On rising edge I/OVL, CLK_RET Output Accelerator Source Impedance I/OVCC, CLK_VCC Output Accelerator Source Impedance I/OVL, CLK_RET Output Accelerator Sink Impedance I/OVCC, CLKVCC Output Accelerator Sink Impedance VL = 1.62V VL = 3.2V VCC = 2.2V VCC = 3.6V VL = 1.62V VL = 3.2V VCC = 2.2V VCC = 3.6V 25 25 25 25 25 25 25 25 25 25 3 3 11 6 9 8 9 8 10 9 ns ns
TIMING CHARACTERISTICS (RSOURCE = 150, Input rise/fall time 1ns) I/OVCC, CLK_VCC Rise Time I/OVCC, CLK_VCC Fall Time I/OVL, CLK_RET Rise Time tRVCC tFVCC tRVL RS = 150, CI/OVCC = 10pF, CCLK_VCC = 10pF, push-pull drivers RS = 150, CI/OVCC = 10pF, CCLK_VCC = 10pF RS = 150, CI/OVL = 15pF, VL 1.35V CCLK_RET = 15pF, push-pull drivers VL 1.62V Full Full Full Full 3.2 3.2 4 3.5 ns ns ns ns
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FN6492.0 March 31, 2009
ISL3034E, ISL3035E, ISL3036E
Electrical Specifications
VCC = +2.2V to +3.6V, VL = +1.35V to +3.2V, EN = VL, unless otherwise noted. Typical values are at VCC = +3.3V, VL = +1.8V and TA = +25C. (Note 6). (Continued) SYMBOL tFVL TEST CONDITIONS RS = 150, CI/OVL = 15pF, CCLK_RET = 15pF RS = 150, CI/OVCC = 10pF, CCLK_VCC = 10pF, push-pull drivers VL 1.35V VL 1.62V VL 1.35V VL 1.62V VL 1.35V VL 1.62V tPDVL RS = 150, CI/OVL = 15pF, CCLK_RET = 15pF, push-pull drivers VL 1.35V VL 1.62V tEN-VCC tEN-VL D.R.1.35 D.R.1.6 RLOAD = 1M, CI/OVCC = 10pF (ISL3034E and ISL3036E) RLOAD = 1M, CI/OVL = 15pF (ISL3034E and ISL3036E) Push-pull operation, RSOURCE = 150, CI/OVCC = 10pF, CI/OVL = 15pF, CCLK_VCC = 10pF, CCLK_RET = 15pF VL 1.35V VL 1.62V TEMP (C) Full Full Full Full Full Full Full MIN (Note 8) TYP MAX (Note 8) 4 3.5 7.5 6.5 1.3 1 6.5 UNITS ns ns ns ns ns ns ns
PARAMETER I/OVL, CLK_RET Fall Time
I/OVCC, CLK_VCC Propagation Delay (Driving I/OVL, CLK_VL) tPDVCC Channel-to-Channel Skew (Note 9) I/OVL, CLK_RET Propagation Delay (Driving I/OVCC, CLK_VCC) tPDVL Channel-to-Channel Skew (Note 9) Delay from EN High to I/OVCC Active Delay from EN High to I/OVL Active Maximum Data Rate
tPDVCC
tSKEWC
tSKEWL
Full Full 25 25 Full Full
85 100
1.5 1.5 -
1.3 0.8 -
ns ns s s Mbps Mbps
NOTES: 6. VL must be less than or equal to VCC - 0.2V during normal operation. However, VL can be greater than VCC during start-up and shutdown conditions and the part will not latch-up nor be damaged. 7. Input thresholds are referenced to the boost circuit. 8. Parameters with MIN and/or MAX limits are 100% tested at +25C, unless otherwise specified. Temperature limits established by characterization and are not production tested. 9. Delta between all I/OVL channel prop delays, or delta between all I/OVCC channel prop delays, all channels tested at the same test conditions.
Test Circuits and Waveforms
VL I/OVL EN VL VCC tPLH I/OVCC I/OVCC CL 50% 10% tRVCC tPDVCC = tPLH or tPHL 90% 90% 50% 50% VL 0V tPHL 50% 10% tFVCC VOH VOL
I/OVL 150 SIGNAL GENERATOR
FIGURE 1A. TEST CIRCUIT FIGURE 1B. MEASUREMENT POINTS FIGURE 1. I/OVCC OUTPUT PROPAGATION DELAY AND TRANSITION TIMES (PUSH - PULL)
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FN6492.0 March 31, 2009
ISL3034E, ISL3035E, ISL3036E Test Circuits and Waveforms (Continued)
VL I/OVCC EN VCC VL tPLH I/OVL CL I/OVL 50% 10% tRVL tPDVL = tPLH or tPHL 90% 90% 50% 50% VCC 0V tPHL 50% 10% tFVL VOH VOL
I/OVCC 150 SIGNAL GENERATOR
FIGURE 2A. TEST CIRCUIT FIGURE 2B. MEASUREMENT POINTS FIGURE 2. I/OVL OUTPUT PROPAGATION DELAY AND TRANSITION TIMES (PUSH - PULL)
VL EN SIGNAL GENERATOR EN VL VCC tENL VCC GND I/OVL SW1 I/OVCC 1M SW2 VCC GND VCC I/OVCC 50% OUTPUT LOW VOL VOH 0V 50% 0V
PARAMETER tENL tENH
SW1 GND VCC
SW2 VCC GND
tENH I/OVCC OUTPUT HIGH 50% tEN-VCC = tENL OR tENH
FIGURE 3A. TEST CIRCUIT
FIGURE 3B. MEASUREMENT POINTS FIGURE 3. I/OVCC OUTPUT ENABLE TIMES
VCC EN SIGNAL GENERATOR EN VCC VL tENL VL GND I/OVCC SW1 I/OVL 1M SW2 VL GND I/OVL 50% OUTPUT LOW VOL VOH 0V VL 50% 0V
PARAMETER tENL tENH
SW1 GND VL
SW2 VL GND
I/OVL
tENH OUTPUT HIGH 50% tEN-VL = tENL OR tENH
FIGURE 4A. TEST CIRCUIT
FIGURE 4B. MEASUREMENT POINTS FIGURE 4. I/OVL OUTPUT ENABLE TIMES
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FN6492.0 March 31, 2009
ISL3034E, ISL3035E, ISL3036E Application Information
Overview
The ISL3034E, ISL3035E, ISL3036E are 100Mbps, bi-directional voltage level translating ICs for multi-supply voltage systems. These products shift lower voltage levels on one interface side (supplied by VL) to a higher voltage level on the other interface side (supplied by VCC), or vice versa. VOH of the I/OVL pins tracks the VL supply, while VOH of the I/OVCC pins tracks the VCC supply. These ICs feature bit-by-bit auto-direction sensing to increase flexibility, and to eliminate the need for direction control pins. On chip pull-up current sources in the active mode, and pull-up resistors in SHDN mode, eliminate the need for most external bus resistors. Drivers interfacing with these level translators may be open-drain or push-pull types, and all three versions may also be used for unidirectional level shifting. The three versions share the same architecture, but the ISL3034E is a general purpose 6-Channel version, while the 6-Channel ISL3035E specifically targets SD Card and other memory card applications. The 4-channel ISL3036 targets nibble and byte based applications, as well as 4-wire SPI interfaces. Power supply ranges allow level shifting between 1.5V, 1.8V, and 2.5V powered devices on the VL side to 2.5V, and 3.3V devices on the VCC side.
VL # HIGH VTH DETECT LOW VTH DETECT VCC EN I/OVL VCC HIGH VTH DETECT LOW VTH DETECT # I/OVCC
# VL
#
# ONE-SHOT AND LEVEL SHIFTER
FIGURE 5. ONE CHANNEL SIMPLIFIED SCHEMATIC
open-drain type driver. Once the one-shot - and thus the accelerator - times out (approximately 3ns to 4ns), the large output drivers tri-state and the pins are weakly held in the last state by the small NMOS transistor between I/OVL and I/OVCC (for a low) or by the small current sources (for a high). In this static state, the I/O pins are easily overdriven by the next transition from an external driver. Having large pull-up and pull-down devices in the accelerator (vs just an active pull-up) nearly eliminates the concern about the external driver's output impedance, and that impedance's effect on VOL, fall times and data rate. The weak pull-up current sources on each I/O pin and the NMOS pass transistors, remain ON whenever the IC is enabled. If a channel's external driver tri-states, the weak pull-up currents either keep the I/O pins high, or if the last state was a low the current sources pull the I/O pins high. In the latter case, each channel's accelerators will once again fire when either the I/OVL or the I/OVCC voltage crosses the accelerator's high threshold level.
Principles of Operation
When enabled, these level shifters detect transitions on an I/O pin, and drive the appropriate logic level on the corresponding I/O pin on the other "side". If the transition was low-to-high, the channel shifts the voltage up to VCC (for transitions on an I/OVL pin) or down to VL (for transitions on an I/OVCC pin), and then drives the shifted level on the other side. The ISL3035E enables whenever VCC > VL + 200mV, while the ISL3034E and ISL3036E enable if EN = 1 AND VCC > VL + 200mV. Upon detecting a transition on either I/O pin, that channel's accelerator circuitry actively drives the opposite side's (output) pin to GND or the output's supply rail, and then turns off. Weak hold circuitry then maintains the logic state until the input is 3-stated, or until another active transition occurs on either I/O pin for that channel. Figure 5 shows the simplified block diagram of one level shifting channel. The accelerator circuitry comprises high and low threshold detectors, one shots with level shifters and large output drivers. A transition on one of the I/OVL or I/OVCC pins momentarily defines that pin as an input. When the high or low threshold is crossed, a one-shot fires either the PMOS or NMOS driver, respectively, on the opposite side (effectively the output). These drivers are large enough to quickly drive the output node to its respective supply or to GND. Note that this transition on the "output" trips the transition detector on that pin, firing its accelerator, which feeds back to the "input" to help reinforce slow transitions, such as those from an
Auto Direction Sensing
Each level translator channel independently and automatically determines the direction of data transfer without any external control signals. As described earlier, a transition on either of the channel's I/O pins momentarily defines that pin as an input, which then translates and drives that input signal to the channel's corresponding pin on the other port (now the output). After a brief period of active driving, both I/O pins return to their weak "hold" mode, where the next transition on either I/O pin determines the direction for the next transfer. Auto sensing saves valuable processor GPIO pins (three [CLK, CMD, DAT] for SD Card applications, or six for the general purpose hex case), and simplifies the software associated with the peripheral interface.
Using Open Drain Drivers
These level translators' accelerator based architecture works equally well when driven by push-pull or open drain type drivers (e.g., for the CMD line initialization in MMC
FN6492.0 March 31, 2009
8
ISL3034E, ISL3035E, ISL3036E
applications). The low static pull-up current is easily overdriven by an active pull-down, and the feedback nature of the accelerators (i.e., the accelerator firing in one direction also triggers the accelerator in the opposite direction) aids the passive pull-up once the input signal passes the accelerator's high threshold. The pull-up current and load capacitance set the input signal rise time, and thus the maximum data rate. For slow data rates the internal pull-up current may suffice, but higher data rates - or more heavily loaded signal lines - may require an external pull-up resistor. respectively. Both products include SHDN mode 16.5k pull-ups on the I/OVCC and I/OVL pins.
ISL3035E
+1.8V 1F 0.1F 0.1F 1F +3.3V
+1.8V SYSTEM CONTROLLER HOST DAT3 DAT2 DAT1 DAT0 CMD CLOCK CLOCK_IN
VL VCC ISL3035E I/OVL_ I/OVL_ I/OVL_ I/OVL_ I/OVL_ CLK_VL CLK_RET I/OVCC_ I/OVCC_ I/OVCC_ I/OVCC_ I/OVCC_ CLK_VCC
+3.3V SD CARD DAT3 DAT2 DAT1 DAT0 CMD CLOCK
Using External Bus Resistors
As mentioned earlier, these level translators incorporate I/O pin pull-up current sources when enabled, and I/O pin pull-up resistors in SHDN (except for the ISL3035E's I/OVCC pins). Therefore, external pull-up or pull-down resistors shouldn't be necessary, and aren't recommended, unless using high-speed open drain signaling.
Power Supplies
WIDE SUPPLY RANGE These ICs operate from a wide range of supply voltages. VL is designed to connect to the supply of 1.5V, 1.8V, and 2.5V powered devices, while VCC is targeted for 2.5V, and 3.3V components. Remember that VCC must be greater than VL for proper operation. POWER SUPPLY SEQUENCING Either VCC or VL may be powered up first, but the IC remains in SHDN until VCC exceeds VL by as much as 200mV. VL may exceed VCC by as much as 4V without causing any damage. I/O PIN INPUT THRESHOLDS VS SUPPLY VOLTAGE Even though the "Electrical Specification" table on page 4 shows the I/O pin input thresholds (VIH, VIL) with a fixed delta from the supplies or GND, the thresholds are better represented as a percentage of the supplies. The typical I/OVCC and CLK_VCC VIH runs about 55% to 60% of VCC, while the corresponding VIL runs about 33% of VCC. The typical I/OVL and CLK_VL VIH runs about 60% to 70% of VL, while the corresponding VIL runs about 25% to 35% of VL.
GND
GND
GND
FIGURE 6. ISL3035E IN AN SD CARD APPLICATION
The ISL3035E specifically targets memory card applications, and Figure 6 illustrates its use in an SD Card application. Instead of six general purpose channels, the ISL3035E features five general purpose channels and one dedicated CLK channel. In memory card applications, the CLK channel is a unidirectional signal driven by the host controller and used by the memory card to synchronize data reads and writes. The ISL3035E's CLK channel is unique in that the host CLK applied to the CLK_VL pin routes to the memory card via the CLK_VCC pin, but it also loops back to the host on the CLK_RET pin. This CLK_RET signal better mimics the timing of "read" data returned from the memory card (see Figure 21 for signal timing), so using CLK_RET as the host's input CLK improves the CLK to data timing relationship. CLK_RET is strictly an output, and CLK_VL is strictly an input. If an ISL3035E application needs a sixth I/O channel then the user needs to connect CLK_VL and CLK_RET together. Connected this way, the combination channel has the same architecture as the other I/O channels. Both CLK_RET and CLK_VL have equivalent pull-up current sources and SHDN pull-up resistors, so connecting these two pins together doubles the pull-up current in either mode. The bit-by-bit auto direction control eliminates the need for GPIO signals to control the flow of data on the CMD and DAT lines. The ISL3035E has no enable pin, so it only enters the low power SHDN mode when VCC drops below VL. There are no SHDN pull-up resistors on the I/OVCC and CLK_VCC pins, but there are 75k pull-ups on the I/OVL, CLK_VL, and CLK_RET pins.
Low Power SHDN Mode
This family of level translators features a low power SHDN mode that tri-states all the I/O and output pins, considerably reduces current consumption, and enables any pull-up resistors on a port's I/O pins (see Table 1). The ISL3034E and ISL3036E enter the SHDN mode when the EN input switches low, or automatically when the VCC voltage drops below the VL voltage. The ISL3035 has no enable pin, so it enters SHDN only if VCC drops below VL. The VL supply powers the EN circuitry.
ISL3034E and ISL3036E
The ISL3034E and ISL3036E are general purpose level translators featuring an enable pin, and six or four channels, 9
FN6492.0 March 31, 2009
ISL3034E, ISL3035E, ISL3036E
Best-in-Class ESD Protection
All pins on these devices include class 3 (>12kV) Human Body Model (HBM) ESD protection structures, but the input and I/O pins incorporate advanced structures allowing them to survive ESD events in excess of 15kV HBM and 15kV to IEC61000-4-2. The I/OVCC pins are particularly vulnerable to ESD damage because they typically connect to an exposed port on the exterior of the finished product. Simply touching the port pins, or connecting a memory card, can cause an ESD event that might destroy unprotected ICs. These new ESD structures protect the device whether or not it is powered up and without degrading the level shifting performance. This built-in ESD protection eliminates the need for board level protection structures (e.g., transient suppression diodes) and the associated, undesirable capacitive load they present. To ensure the full benefit of the built-in ESD protection, connect the IC's GND pin directly to a low impedance GND plane. configuration (power applied). The IEC61000 standard's lower current limiting resistor coupled with the larger charge storage capacitor yields a test that is much more severe than the HBM test. The extra ESD protection built into these devices' pins allows the design of equipment meeting level 4 criteria without the need for additional board level protection. AIR-GAP DISCHARGE TEST METHOD For this test method, a charged probe tip moves toward the IC pin until the voltage arcs to it. The current waveform delivered to the IC pin depends on approach speed, humidity, temperature, etc., so it is difficult to obtain repeatable results. All the EN, CLK, and I/O pins withstand 15kV air-gap discharges, relative to GND. CONTACT DISCHARGE TEST METHOD During the contact discharge test, the probe contacts the tested pin before the probe tip is energized, thereby eliminating the variables associated with the air-gap discharge. The result is a more repeatable and predictable test, but equipment limits prevent testing devices at voltages higher than 9kV. Devices in this family survive 9kV contact discharges (relative to the GND pin) on the EN, CLK, and I/O pins.
IEC61000-4-2 Testing
The IEC61000 test method applies to finished equipment, rather than to an individual IC. Therefore, the pins most likely to suffer an ESD event are those that are exposed to the outside world (typically I/OVCC pins in memory card applications) but the ISL3034E, ISL3035E, and ISL3036E feature IEC61000 ESD protection on all logic and I/O pins (both I/OVL and I/OVCC, as well as CLK pins). Unlike HBM and MM methods which only test each pin-to-pin combination without applying power, IEC61000 testing is also performed with the IC in its typical application
Layout and Decoupling Considerations
These level translators' high data rates and fast signal transitions require that the accelerators have high transient currents. Thus, short, low inductance supply traces and decoupling within 1/8th inch of the IC are imperative with very low impedance GND return paths.
Typical Performance Curves
2.5
VCC = 3.3V, VL = 1.8V, CL = 15pF, RSOURCE = 150, Data Rate = 100Mbps, push-pull driver, TA = +25C; Unless Otherwise Specified.
25 VL = 1.8V VCC = 3.6V VL SUPPLY CURRENT (mA) 20 SWITCHING 6 I/OVCC INPUTS 15
VL SUPPLY CURRENT (mA)
2.0
SWITCHING 6 I/OVL INPUTS
1.5
SWITCHING 4 I/OVL INPUTS
1.0 SWITCHING 1 I/OVL INPUT 0.5
10
SWITCHING 4 I/OVCC INPUTS
5 SWITCHING 1 I/OVCC INPUT 0 1.3
0 2.2
2.4
2.6 2.8 3.0 3.2 VCC SUPPLY VOLTAGE (V)
3.4
3.6
1.5
1.7
1.9 2.1 2.3 2.5 2.7 VL SUPPLY VOLTAGE (V)
2.9
3.1 3.2
FIGURE 7. VL SUPPLY CURRENT vs VCC SUPPLY VOLTAGE
FIGURE 8. VL SUPPLY CURRENT vs VL SUPPLY VOLTAGE
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FN6492.0 March 31, 2009
ISL3034E, ISL3035E, ISL3036E Typical Performance Curves
35 VL = 1.8V VCC SUPPLY CURRENT (mA) VCC SUPPLY CURRENT (mA) 30 25 20 15 10 5 SWITCHING 1 I/OVL INPUT SWITCHING 4 I/OVL INPUTS SWITCHING 6 I/OVL INPUTS 14 SWITCHING 6 I/OVCC INPUTS 12 10 8 6 4 2 2.4 2.6 2.8 3.0 3.2 VCC SUPPLY VOLTAGE (V) 3.4 3.6 0 1.3 SWITCHING 1 I/OVCC INPUT SWITCHING 4 I/OVCC INPUTS
VCC = 3.3V, VL = 1.8V, CL = 15pF, RSOURCE = 150, Data Rate = 100Mbps, push-pull driver, TA = +25C; Unless Otherwise Specified. (Continued)
16 VCC = 3.6V
0 2.2
1.5
1.7
1.9 2.1 2.3 2.5 2.7 VL SUPPLY VOLTAGE (V)
2.9
3.1 3.2
FIGURE 9. VCC SUPPLY CURRENT vs VCC SUPPLY VOLTAGE
FIGURE 10. VCC SUPPLY CURRENT vs VL SUPPLY VOLTAGE
2.50 2.45
SWITCHING 1 I/OVCC INPUT
7 SWITCHING 1 I/OVL INPUT 6 ICC
SUPPLY CURRENT (mA)
2.40 SUPPLY CURRENT (mA) 2.35 2.30 2.25 2.20 2.15 2.10 2.05 2.00 -40 -15 10 35 TEMPERATURE (C) 60 85 ICC 5 4 3 2 1 0 -40 IL
IL -15 10 35 TEMPERATURE (C) 60 85
FIGURE 11. SUPPLY CURRENT vs TEMPERATURE
FIGURE 12. SUPPLY CURRENT vs TEMPERATURE
18
40
VCC SUPPLY CURRENT (mA)
VL SUPPLY CURRENT (mA)
16 14 12 10 SWITCHING 4 I/OVCC INPUTS 8 6 4 2 0 10 15 20 25 30 35 SWITCHING 1 I/OVCC INPUT SWITCHING 6 I/OVCC INPUTS
35 30 25 20 15 10
SWITCHING 6 I/OVL INPUTS
SWITCHING 4 I/OVL INPUTS
SWITCHING 1 I/OVL INPUT 5 0 10 15 20 25 30 35
CAPACITIVE LOAD (pF) FIGURE 13. VL SUPPLY CURRENT vs I/OVL CAPACITIVE LOAD
CAPACITIVE LOAD (pF) FIGURE 14. VCC SUPPLY CURRENT vs I/OVCC CAPACITIVE LOAD
11
FN6492.0 March 31, 2009
ISL3034E, ISL3035E, ISL3036E Typical Performance Curves
1.8 SWITCHING I/OVL INPUT 1.7 RISE AND FALL TIMES (ns) 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 10 15 20 25 30 35 0.9 10 15 20 25 30 35 tRVCC RISE AND FALL TIMES (ns) tFVCC
VCC = 3.3V, VL = 1.8V, CL = 15pF, RSOURCE = 150, Data Rate = 100Mbps, push-pull driver, TA = +25C; Unless Otherwise Specified. (Continued)
2.1 SWITCHING I/OVCC INPUT 1.9 tRVL 1.7 1.5 1.3 1.1 tFVL
CAPACITIVE LOAD (pF) FIGURE 15. RISE/FALL TIME vs I/OVCC CAPACITIVE LOAD
CAPACITIVE LOAD (pF) FIGURE 16. RISE/FALL TIME vs I/OVL CAPACITIVE LOAD
4.2 SWITCHING I/OVL INPUT PROPAGATION DELAY (ns) PROPAGATION DELAY (ns) 4.0 3.8 3.6 tPHL 3.4 3.2 3.0 10
3.4
SWITCHING I/OVCC INPUT
3.2 tPLH 3.0
tPLH
2.8 tPLH 2.6 tPHL
15
20
25
30
35
2.4
10
15
20
25
30
35
CAPACITIVE LOAD (pF) FIGURE 17. PROPAGATION DELAY vs I/OVCC CAPACITIVE LOAD
CAPACITIVE LOAD (pF) FIGURE 18. PROPAGATION DELAY vs I/OVL CAPACITIVE LOAD
2.0 I/OVL INPUT (V) I/OVCC INPUT (V) I/OVL OUTPUT (V) CL = 35pF TIME (4ns/DIV) 1.5 1.0 0.5 0 3.0 I/OVCC OUTPUT (V) 2.5 2.0 1.5 1.0 0.5 0
4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 2.0 1.5 1.0 0.5 0 CL = 15pF TIME (4ns/DIV)
FIGURE 19. I/OVCC OUTPUT WAVEFORMS (100Mbps)
FIGURE 20. I/OVL OUTPUT WAVEFORMS (100Mbps)
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FN6492.0 March 31, 2009
ISL3034E, ISL3035E, ISL3036E Typical Performance Curves
CLK_VL INPUT (V) 2 1 0 3.0 2.5 2.0 1.5 1.0 0.5 0 2.0 1.5 1.0 0.5 0 TIME (4ns/DIV) CLK_VCC OUTPUT (V)
VCC = 3.3V, VL = 1.8V, CL = 15pF, RSOURCE = 150, Data Rate = 100Mbps, push-pull driver, TA = +25C; Unless Otherwise Specified. (Continued)
Die Characteristics
SUBSTRATE AND TQFN/QFN THERMAL PAD POTENTIAL (POWERED UP): GND TRANSISTOR COUNT: ISL3034E, ISL3035E - 2600 ISL3036E - 2000 PROCESS: Si Gate BiCMOS
CL = 35pF CL = 15pF
CLK_RET OUTPUT (V)
FIGURE 21. ISL3035E CLOCK WAVEFORMS (100Mbps)
13
FN6492.0 March 31, 2009
ISL3034E, ISL3035E, ISL3036E Ultra Thin Quad Flat No-Lead Plastic Package (UTQFN)
D A B
L16.2.6x1.8A
16 LEAD ULTRA THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE MILLIMETERS
6 INDEX AREA 2X 2X 0.10 C
N
E
SYMBOL A
MIN 0.45 -
NOMINAL 0.50 0.127 REF
MAX 0.55 0.05
NOTES -
12 0.10 C
A1 A3
TOP VIEW
b D
0.15 2.55 1.75
0.20 2.60 1.80 0.40 BSC
0.25 2.65 1.85
5 -
0.10 C 0.05 C SEATING PLANE A1 SIDE VIEW A
C
E e K L L1 N
0.15 0.35 0.45
0.40 0.50 16 4 4
0.45 0.55
2 3 3
e PIN #1 ID 12 L1
Nd
K NX L NX b 5 16X 0.10 M C A B 0.05 M C BOTTOM VIEW
Ne NOTES: 0
-
12
4 Rev. 5 2/09
(DATUM B) (DATUM A)
1. Dimensioning and tolerancing conform to ASME Y14.5-1994. 2. N is the number of terminals. 3. Nd and Ne refer to the number of terminals on D and E side, respectively. 4. All dimensions are in millimeters. Angles are in degrees. 5. Dimension b applies to the metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip.
C L NX (b) 5 SECTION "C-C" CC e TERMINAL TIP (A1) L
6. The configuration of the pin #1 identifier is optional, but must be located within the zone indicated. The pin #1 identifier may be either a mold or mark feature. 7. Maximum package warpage is 0.05mm. 8. Maximum allowable burrs is 0.076mm in all directions. 9. JEDEC Reference MO-255. 10. For additional information, to assist with the PCB Land Pattern Design effort, see Intersil Technical Brief TB389.
3.00 1.80 1.40 1.40
2.20
0.90 0.40 0.20 0.50 0.40 10 LAND PATTERN 0.20
14
FN6492.0 March 31, 2009
ISL3034E, ISL3035E, ISL3036E
Package Outline Drawing
L14.3.5x3.5
14 LEAD QUAD DUAL FLAT NO-LEAD PLASTIC PACKAGE (QFN) Rev 0, 2/08
3.50 PIN 1 6 INDEX AREA B A 2x 2.0 6 PIN #1 INDEX AREA 2 8x 0.50 6
1
7
3.50
2x 1.50
2.05 0 . 15
14
8
(4X)
0.15 13 9 0.10 M C A B
0.07 4 16X 0.23 +- 0.05
TOP VIEW VIEW "A-A"
14x 0.40 0.10
BOTTOM VIEW
( 2.00 ) (8x 0.50)
SEE DETAIL "X"
0.10 C
0 . 90 0.1 BASE PLANE ( 3.30 TYP ) ( 2.05) ( 2x 1.5 )
C
SEATING PLANE 0.08 C
SIDE VIEW
( 14x 0.23 )
( 14 x 0.60)
C
0 . 2 REF
5
TYPICAL RECOMMENDED LAND PATTERN
0 . 00 MIN. 0 . 05 MAX.
DETAIL "X"
NOTES: 1. Dimensions are in millimeters. Dimensions in ( ) for Reference Only. 2. Dimensioning and tolerancing conform to AMSE Y14.5m-1994. 3. Unless otherwise specified, tolerance : Decimal 0.05 4. Lead width dimension applies to the metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip. 5. Tiebar shown (if present) is a non-functional feature. 6. The configuration of the pin #1 identifier is optional, but must be located within the zone indicated. The pin #1 identifier may be either a mold or mark feature.
15
FN6492.0 March 31, 2009
ISL3034E, ISL3035E, ISL3036E Thin Quad Flat No-Lead Plastic Package (TQFN) Thin Micro Lead Frame Plastic Package (TMLFP)
)
2X A 9 D1 D1/2 6 INDEX AREA N 1 2 3 E1/2 E1 9 2X 0.15 C B 2X 0.15 C A 4X 0 TOP VIEW A2 B E/2 E 2X 0.15 C B D D/2 0.15 C A
L16.3x3A
16 LEAD THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE MILLIMETERS SYMBOL A A1 A2 A3 b D D1 D2 E 1.35 0.18 MIN 0.70 NOMINAL 0.75 0.20 REF 0.23 3.00 BSC 2.75 BSC 1.50 3.00 BSC 2.75 BSC 1.35 1.50 0.50 BSC 0.20 0.30 0.40 16 4 4 0.60 12 0.50 1.65 1.65 0.30 MAX 0.80 0.05 0.80 NOTES 9 9 5, 8 9 7, 8, 10 9 7, 8, 10 8 2 3 3 9 9 Rev. 0 6/04 NOTES: 1. Dimensioning and tolerancing conform to ASME Y14.5-1994. 2. N is the number of terminals. 3. Nd and Ne refer to the number of terminals on each D and E. 4. All dimensions are in millimeters. Angles are in degrees. 5. Dimension b applies to the metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip. 6. The configuration of the pin #1 identifier is optional, but must be located within the zone indicated. The pin #1 identifier may be either a mold or mark feature. 7. Dimensions D2 and E2 are for the exposed pads which provide improved electrical and thermal performance.
A
/ / 0.10 C 0.08 C
E1 E2 e
C A3 A1
SEATING PLANE
SIDE VIEW NX b 5
9
k L
4X P D2 (DATUM B) 4X P D2 2N
0.10 M C A B 7 8 NX k
N Nd Ne P
1 (DATUM A) 6 INDEX AREA NX L Ne 8 (Nd-1)Xe REF. BOTTOM VIEW A1 NX b 5 2 3 E2 7 E2/2 8 (Ne-1)Xe REF.
9 CORNER OPTION 4X
SECTION "C-C" C L C L
8. Nominal dimensions are provided to assist with PCB Land Pattern Design efforts, see Intersil Technical Brief TB389.
L1 e 10 L
L1 CC e
10
L
9. Features and dimensions A2, A3, D1, E1, P & are present when Anvil singulation method is used and not present for saw singulation. 10. Compliant to JEDEC MO-220WEED-2 Issue C, except for the E2 and D2 MAX dimension.
TERMINAL TIP
FOR ODD TERMINAL/SIDE
FOR EVEN TERMINAL/SIDE
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation's quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com 16

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