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FXL4245 Low Voltage Dual Supply 8-Bit Signal Translator with Configurable Voltage Supplies and Signal Levels and 3-STATE Outputs
April 2004 Revised June 2004
FXL4245 Low Voltage Dual Supply 8-Bit Signal Translator with Configurable Voltage Supplies and Signal Levels and 3-STATE Outputs
General Description
The FXL4245 is a configurable dual-voltage-supply translator designed for bi-directional voltage translation of signals between two voltage levels. The device allows translation between voltages as high as 3.6V to as low as 1.1V. The A Port tracks the VCCA level, and the B Port tracks the VCCB level. Both ports are designed to accept supply voltage levels from 1.1V to 3.6V. This allows for bi-directional voltage translation over a variety of voltage levels: 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V. The device remains in 3-STATE until both VCCs reach active levels allowing either VCC to be powered-up first. The device also contains power down control circuits that place the device in 3-STATE if either VCC is removed. The Transmit/Receive (T/R) input determines the direction of data flow through the device. The OE input, when HIGH, disables both the A and B Ports by placing them in a 3-STATE condition. The FXL4245 is designed so that the control pins (T/R and OE) are supplied by VCCA.
Features
s Bi-directional interface between any 2 levels from 1.1V to 3.6V s Fully configurable, inputs track VCC level s Non-preferential power-up sequencing; either VCC may be powered-up first s Outputs remain in 3-STATE until active VCC level is reached s Outputs switch to 3-STATE if either VCC is at GND s Power-off protection s Control inputs (T/R, OE) levels are referenced to VCCA voltage s Packaged in 24-terminal MLP s ESD protection exceeds: * 4kV HBM ESD (per JESD22-A114 & Mil Std 883e 3015.7) * 8kV HBM I/O to GND ESD (per JESD22-A114 & Mil Std 883e 3015.7) * 1kV CDM ESD (per ESD STM 5.3) * 200V MM ESD (per JESD22-A115 & ESD STM5.2)
Ordering Code:
Order Number FXL4245MPX Package Number MLP024B Package Description 24-Terminal Molded Leadless Package (MLP), JEDEC MO-220, 3.5mm x 4.5mm
(c) 2004 Fairchild Semiconductor Corporation
DS500867
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FXL4245
Terminal Descriptions
Terminal Names OE T/R A0-A7 B0-B7 VCCA VCCB GND Description Output Enable Input Transmit/Receive Input Side A Inputs or 3-STATE Outputs Side B Inputs or 3-STATE Outputs Side A Power Supply Side B Power Supply Ground
Connection Diagram
Terminal Assignments for MLP
Truth Table
Inputs OE L L H
H = HIGH Voltage Level
Outputs T/R L H X Bus B Data to Bus A Bus A Data to Bus B 3-STATE
X = Don't Care
L = LOW Voltage Level
(Top View)
Terminal Assignment
Terminal Number 1 2 3 4 5 6 7 8 9 10 11 12 Terminal Name VCCA T/R A0 A1 A2 A3 A4 A5 A6 A7 GND GND Terminal Number 13 14 15 16 17 18 19 20 21 22 23 24 Terminal Name GND B7 B6 B5 B4 B3 B2 B1 B0 OE VCCB VCCB
Power-Up/Power-Down Sequencing
FXL translators offer an advantage in that either VCC may be powered up first. This benefit derives from the chip design. When either VCC is at 0 volts, outputs are in a HIGH-Impedance state. The control inputs (T/R and OE) are designed to track the VCCA supply. A pull-up resistor tying OE to VCCA should be used to ensure that bus contention, excessive currents, or oscillations do not occur during power-up/power-down. The size of the pull-up resistor is based upon the current-sinking capability of the OE driver. The recommended power-up sequence is the following: 1. Apply power to either VCC. 2. Apply power to the T/R input (Logic HIGH for A-to-B operation; Logic LOW for B-to-A operation) and to the respective data inputs (A Port or B Port). This may occur at the same time as Step 1. 3. Apply power to other VCC. 4. Drive the OE input LOW to enable the device. The recommended power-down sequence is the following: 1. Drive OE input HIGH to disable the device. 2. Remove power from either VCC. 3. Remove power from other VCC.
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FXL4245
Absolute Maximum Ratings(Note 1)
Supply Voltage VCCA VCCB DC Input Voltage (VI) I/O Port A I/O Port B Control Inputs (T/R, OE) Output Voltage (VO) (Note 2) Outputs 3-STATE Outputs Active (An) Outputs Active (Bn) DC Input Diode Current (IIK) VI < 0V DC Output Diode Current (IOK) VO < 0V VO > VCC DC Output Source/Sink Current (IOH/IOL) DC VCC or Ground Current per Supply Pin (ICC) Storage Temperature Range (TSTG)
Recommended Operating Conditions (Note 3)
Power Supply Operating (VCCA or VCCB) Input Voltage Port A 0.0V to 3.6V 0.0V to 3.6V 0.0V to VCCA Port B Control Inputs (T/R, OE) Output Current in IOH/IOL VCC0 3.0V to 3.6V 2.3V to 2.7V 1.65V to 1.95V 1.4V to 1.65V 1.1V to 1.4V Free Air Operating Temperature (TA) Minimum Input Edge Rate (V/t) VCCA/B = 1.1V to 3.6V 10 ns/V 1.1V to 3.6V
-0.5V to +4.6V -0.5V to +4.6V -0.5V to +4.6V -0.5V to +4.6V -0.5V to +4.6V -0.5V to +4.6V -0.5V to VCCA + 0.5V -0.5V to VCCB + 0.5V -50 mA -50 mA +50 mA -50 mA / +50 mA 100 mA -65C to +150C
24 mA 18 mA 6 mA 2 mA 0.5 mA -40C to +85C
Note 1: The "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The "Recommended Operating Conditions" table will define the conditions for actual device operation. Note 2: IO Absolute Maximum Rating must be observed. Note 3: All unused inputs must be held at VCCI or GND.
DC Electrical Characteristics
Symbol VIH (Note 4) Parameter High Level Input Conditions Data Inputs An, Bn VCCI (V) 2.7 - 3.6 2.3 - 2.7 1.65 - 2.3 1.4 - 1.65 1.1 - 1.4 Control Pins/OE, T/R (Referenced to VCCA) 2.7 - 3.6 2.3 - 2.7 1.65 - 2.3 1.4 - 1.65 1.1 - 1.4 VIL (Note 4) Low Level Input Voltage Data Inputs An, Bn 2.7 - 3.6 2.3 - 2.7 1.65 - 2.3 1.4 - 1.65 1.1 - 1.4 Control Pins/OE, T/R (Referenced to VCCA) 2.7 - 3.6 2.3 - 2.7 1.65 - 2.3 1.4 - 1.65 1.1 - 1.4 1.1 - 3.6 1.1 - 3.6 1.1 - 3.6 1.1 - 3.6 VCCO (V) 2.0 1.6 0.65 x VCCI 0.65 x VCCI 0.9 x VCCI 2.0 1.6 0.65 x VCCA 0.65 x VCCA 0.9 x VCCA 0.8 0.7 0.35 x VCCI 0.35 x VCCI 0.1 x VCCI 0.8 0.7 0.35 x VCCA 0.35 x VCCA 0.1 x VCCA V V Min Max Units
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FXL4245
DC Electrical Characteristics
Symbol VOH (Note 5) Parameter High Level Output Voltage
(Continued)
VCCI (V) 1.1 - 3.6 2.7 3.0 3.0 2.3 2.3 2.3 1.65 1.4 1.1 1.1 - 3.6 2.7 3.0 3.0 2.3 2.3 1.65 1.4 1.1 1.1 - 3.6 0 3.6 3.6 0 3.6 1.1 - 3.6 1.1 - 3.6 0 1.1 - 3.6 1.1 - 3.6 0 3.6 VCCO (V) 1.1 - 3.6 2.7 3.0 3.0 2.3 2.3 2.3 1.65 1.4 1.1 1.1- 3.6 2.7 3.0 3.0 2.3 2.3 1.65 1.4 1.1 3.6 3.6 0 3.6 3.6 0 1.1 - 3.6 1.1 - 3.6 1.1 - 3.6 0 0 1.1 - 3.6 3.6 VCC0 - 0.2 2.2 2.4 2.2 2.0 1.8 1.7 1.25 1.05 0.75 x VCC0 0.2 0.4 0.4 0.55 0.4 0.6 0.3 0.35 0.3 x VCC0 1.0 10.0 10.0 10.0 +10.0 +10.0 20.0 20.0 -10.0 10.0 -10.0 10.0 500 A A A A A A A A A A V V
Conditions IOH = -100 A IOH = -12 mA IOH = -18 mA IOH = -24 mA IOH = -6 mA IOH = -12 mA IOH = -18 mA IOH = -6 mA IOH = -2 mA IOH = -0.5 mA
Min
Max
Units
VOL (Note 5)
Low Level Output Voltage
IOL = 100A IOL = 12 mA IOL = 18 mA IOL = 24 mA IOL =12 mA IOL = 18 mA IOL = 6 mA IOL = 2 mA IOL = 0.5 mA
II IOFF
Input Leakage Current. Control Pins VI = V CCA or GND Power Off Leakage Current An, VI or VO = 0V to 3.6V Bn, VI or VO = 0V to 3.6V OE = VIH OE = Don't Care OE = Don't Care
IOZ (Note 6)
3-STATE Output Leakage 0 V O 3.6V VI = VIH or VIL
An, Bn Bn, An,
ICCA/B (Note 7) Quiescent Supply Current ICCZ (Note 7) ICCA ICCB ICCA/B Quiescent Supply Current Quiescent Supply Current Quiescent Supply Current Increase in ICC per Input; Other Inputs at VCC or GND
VI = V CCI or GND; IO = 0 VI = V CCI or GND; IO = 0 VI = V CCA or GND; IO = 0 VI = V CCA or GND; IO = 0 VI = V CCB or GND; IO = 0 VI = V CCB or GND; IO = 0 VIH = 3.0
Note 4: VCCI = the VCC associated with the data input under test. Note 5: VCCO = the VCC associated with the output under test. Note 6: Don't Care = Any valid logic level. Note 7: Reflects current per supply, VCCA or VCCB.
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FXL4245
AC Electrical Characteristics VCCA = 3.0V to 3.6V
TA = -40C to +85C Symbol Parameter VCCB = 3.0V to 3.6V Min tPLH, tPHL Propagation Delay A to B Propagation Delay B to A tPZH, tPZL Output Enable OE to B Output Enable OE to A tPHZ, tPLZ Output Disable OE to B Output Disable OE to A 0.2 0.2 0.5 0.5 0.2 0.2 Max 3.5 3.5 4.0 4.0 3.8 3.7 VCCB = 2.3V to 2.7V Min 0.3 0.2 0.7 0.5 0.2 0.2 Max 3.9 3.8 4.4 4.0 4.0 3.7 VCCB = 1.65V to 1.95V Min 0.5 0.3 1.0 0.5 0.7 0.2 Max 5.4 4.0 5.9 4.0 4.8 3.7 VCCB = 1.4V to 1.6V Min 0.6 0.5 1.0 0.5 1.5 0.2 Max 6.8 4.3 6.4 4.0 6.2 3.7 VCCB = 1.1V to 1.3V Min 1.4 0.8 1.5 0.5 2.0 0.2 Max 22.0 13.0 17.0 ns 4.0 17.0 ns 3.7 ns Units
AC Electrical Characteristics VCCA = 2.3V to 2.7V
TA = -40C to +85C Symbol Parameter VCCB = 3.0V to 3.6V Min tPLH, tPHL Propagation Delay A to B Propagation Delay B to A tPZH, tPZL Output Enable OE to B Output Enable OE to A tPHZ, tPLZ Output Disable OE to B Output Disable OE to A 0.2 0.3 0.6 0.6 0.2 0.2 Max 3.8 3.9 4.2 4.5 4.1 4.0 VCCB = 2.3V to 2.7V Min 0.4 0.4 0.8 0.6 0.2 0.2 Max 4.2 4.2 4.6 4.5 4.3 4.0 VCCB = 1.65V to 1.95V Min 0.5 0.5 1.0 0.6 0.7 0.2 Max 5.6 4.5 6.0 4.5 4.8 4.0 VCCB = 1.4V to 1.6V Min 0.8 0.5 1.0 0.6 1.5 0.2 Max 6.9 4.8 6.8 4.5 6.7 4.0 VCCB = 1.1V to 1.3V Min 1.4 1.0 1.5 0.6 2.0 0.2 Max 22.0 7.0 17.0 ns 4.5 17.0 ns 4.0 ns Units
AC Electrical Characteristics VCCA = 1.65V to 1.95V
TA = -40C to +85C Symbol Parameter VCCB = 3.0V to 3.6V Min tPLH, tPHL Propagation Delay A to B Propagation Delay B to A tPZH, tPZL Output Enable OE to B Output Enable OE to A tPHZ, tPLZ Output Disable OE to B Output Disable OE to A 0.3 0.5 0.6 1.0 0.2 0.5 Max 4.0 5.4 5.2 6.7 5.1 5.0 VCCB = 2.3V to 2.7V Min 0.5 0.5 0.8 1.0 0.2 0.5 Max 4.5 5.6 5.4 6.7 5.2 5.0 VCCB = 1.65V to 1.95V Min 0.8 0.8 1.2 1.0 0.8 0.5 Max 5.7 5.7 6.9 6.7 5.2 5.0 VCCB = 1.4V to 1.6V Min 0.9 1.0 1.2 1.0 1.5 0.5 Max 7.1 6.0 7.2 6.7 7.0 5.0 VCCB = 1.1V to 1.3V Min 1.5 1.2 1.5 1.0 2.0 0.5 Max 22.0 8.0 18.0 ns 6.7 17.0 ns 5.0 ns Units
AC Electrical Characteristics VCCA = 1.4V to 1.6V
TA = -40C to +85C Symbol Parameter VCCB = 3.0V to 3.6V Min tPLH, tPHL Propagation Delay A to B Propagation Delay B to A tPZH, tPZL Output Enable OE to B Output Enable OE to A tPHZ, tPLZ Output Disable OE to B Output Disable OE to A 0.5 0.6 1.1 1.0 0.4 1.0 Max 4.3 6.8 7.5 7.5 6.1 6.0 VCCB = 2.3V to 2.7V Min 0.5 0.8 1.1 1.0 0.4 1.0 Max 4.8 6.9 7.6 7.5 6.2 6.0 VCCB = 1.65V to 1.95V Min 1.0 0.9 1.3 1.0 0.9 1.0 Max 6.0 7.1 7.7 7.5 6.2 6.0 VCCB = 1.4V to 1.6V Min 1.0 1.0 1.4 1.0 1.5 1.0 Max 7.3 7.3 7.9 7.5 7.5 6.0 VCCB = 1.1V to 1.3V Min 1.5 1.3 2.0 1.0 2.0 1.0 Max 22.0 9.5 20.0 ns 7.5 18.0 ns 6.0 ns Units
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FXL4245
AC Electrical Characteristics VCCA = 1.1V to 1.3V
TA = -40C to +85C Symbol Parameter VCCB = 3.0V to 3.6V Min tPLH, tPHL Propagation Delay A to B Propagation Delay B to A tPZH, tPZL Output Enable OE to B Output Enable OE to A tPHZ, tPLZ Output Disable OE to B Output Disable OE to A 0.8 1.4 1.0 2.0 1.0 2.0 Max 13.0 22.0 12.0 22.0 15.0 15.0 VCCB = 2.3V to 2.7V Min 1.0 1.4 1.0 2.0 0.7 2.0 Max 7.0 22.0 9.0 22.0 7.0 12.0 VCCB = 1.65V to 1.95V Min 1.2 1.5 2.0 2.0 1.0 2.0 Max 8.0 22.0 10.0 22.0 8.0 12.0 VCCB = 1.4V to 1.6V Min 1.3 1.5 2.0 2.0 2.0 2.0 Max 9.5 22.0 11.0 22.0 10.0 12.0 VCCB = 1.1V to 1.3V Min 2.0 2.0 2.0 2.0 2.0 2.0 Max 24.0 24.0 24.0 ns 22.0 20.0 ns 12.0 ns Units
Capacitance
Symbol CIN CI/O CPD Parameter Input Capacitance Input/Output Capacitance Power Dissipation Capacitance Conditions VCCA = VCCB = 0.0V, VI = 0V or VCCA/B VCCA = VCCB = 3.3V, VI = 0V or VCCA/B VCCA = VCCB = 3.3V, VI = 0V or VCC, F = 10 MHz TA = +25C Typical 4.0 5.0 20.0 Units pF pF pF
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FXL4245
AC Loading and Waveforms
TEST tPLH, tPHL tPLZ, tPZL tPHZ, tPZH
SWITCH OPEN VCCO x 2 at VCCO = 3.3 0.3V, 2.5V 0.2V, 1.8V 0.15V, 1.5V 0.1V, 1.2V 0.1V GND FIGURE 1. AC Test Circuit AC Load Table
VCCO 1.2V 0.1V 1.5V 0.1V 1.8V 0.15V 2.5V 0.2V 3.3V 0.3V
CL 15 pF 15 pF 30 pF 30 pF 30 pF
RL 2 k 2 k 500 500 500
Rtr1 2 k 2 k 500 500 500
Note: Input tR = tF = 2.0 ns, 10% to 90%
Note: Input tR = tF = 2.0 ns, 10% to 90%
FIGURE 2. Waveform for Inverting and Non-Inverting Functions
FIGURE 3. 3-STATE Output Low Enable and Disable Times for Low Voltage Logic
Note: Input tR = tF = 2.0 ns, 10% to 90%
FIGURE 4. 3-STATE Output High Enable and Disable Times for Low Voltage Logic Symbol Vmi Vmo VX VY VCC 3.3V 0.3V VCCI/2 VCCO/2 VOH - 0.3V VOL + 0.3V 2.5V 0.2V VCCI/2 VCCO/2 VOH - 0.15V VOL + 0.15V 1.8V 0.15V VCCI/2 VCCO/2 VOH - 0.15V VOL + 0.15V 1.5V 0.1V VCCI/2 VCCO/2 VOH - 0.1V VOL + 01V 1.2V 0.1V VCCI/2 VCCO/2 VOH - 0.1V VOL + 01V
Note: For Vmi: VCCI = VCCA for Control Pins T/R and OE, or VCCA/2
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FXL4245
Tape and Reel Specification
Tape Format for MLP Package Designator MPX Tape Section Leader (Start End) Carrier Trailer (Hub End) TAPE DIMENSIONS inches (millimeters) Number Cavities 125 (typ) 3000 75 (typ) Cavity Status Empty Filled Empty Cover Tape Status Sealed Sealed Sealed
REEL DIMENSIONS inches (millimeters)
Tape Size 12 mm
A 13.0 (330.0)
B 0.059 (1.50)
C 0.512 (13.00)
D 0.795 (20.20)
N 2.165 (55.00)
W1 0.488 (12.4)
W2 0.724 (18.4)
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FXL4245 Low Voltage Dual Supply 8-Bit Signal Translator with Configurable Voltage Supplies and Signal Levels and 3-STATE Outputs
Physical Dimensions inches (millimeters) unless otherwise noted
24-Terminal Molded Leadless Package (MLP), JEDEC MO-220, 3.5mm x 4.5mm Package Number MLP024B
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 9 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com
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