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Low Voltage, Single-Channel Level Translator ADG3231*
FEATURES Operates from 1.65 V to 3.6 V Supply Rails Unidirectional Signal Path, Bidirectional Level Translation Tiny 6-Lead SOT-23 Package Short Circuit Protection LVTTL/CMOS Compatible Inputs APPLICATIONS Level Translation Low Voltage ASIC Translation Serial Interface Translation FUNCTIONAL BLOCK DIAGRAM
VCC1 VCC2
A1
Y1
GND
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
The ADG3231 is a level translator designed on a submicron process that operates from supplies as low as 1.65 V. The device is guaranteed for operation over the supply range 1.65 V to 3.6 V. It operates from two supply voltages, allowing bidirectional level translation, i.e., it translates low voltages to higher voltages and vice versa. The signal path is unidirectional, meaning data may flow only from A1 to Y1. This type of device may be used in applications requiring communication between devices operating from different supply levels. The level translator is packaged in one of the smallest footprints available for its pin count. The 6-lead SOT-23 package requires only a maximum of 5.28 mm 5.28 mm board space.
1. Bidirectional level translation matches any voltage level from 1.65 V to 3.6 V. 2. The device offers high performance and is fully guaranteed across the supply range. 3. Short circuit protection. 4. Tiny SOT-23 package.
*Patent Pending
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Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective companies.
One Technology Way, P Box 9106, Norwood, MA 02062-9106, U.S.A. .O. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 (c) 2003 Analog Devices, Inc. All rights reserved.
ADG3231-SPECIFICATIONS1
Parameter Symbol
(VCC1 = VCC2 = 1.65 V to 3.6 V, GND = 0 V. All specifications TMIN to TMAX, unless otherwise noted.)
Min Typ2 Max Unit
Conditions
LOGIC INPUTS/OUTPUTS3 Input High Voltage4 Input Low Voltage4
Output High Voltage
VIH VIH VIH VIL VIL VIL VOH
Output Low Voltage
VOL
VCC1 = 3.0 V to 3.6 V VCC1 = 2.3 V to 2.7 V VCC1 = 1.65 V to 1.95 V VCC1 = 3.0 V to 3.6 V VCC1 = 2.3 V to 2.7 V VCC1 = 1.65 V to 1.95 V IOH = -100 A, VCC2 = 3.0 V to 3.6 V VCC2 = 2.3 V to 2.7 V VCC2 = 1.65 V to 1.95 V IOH = -4 mA, VCC2 = 2.3 V to 2.7 V VCC2 = 1.65 V to 1.95 V IOH = -8 mA, VCC2 = 3.0 V to 3.6 V IOH = +100 A, VCC2 = 3.0 V to 3.6 V VCC2 = 2.3 V to 2.7 V VCC2 = 1.65 V to 1.95 V IOH = +4 mA, VCC2 = 2.3 V to 2.7 V VCC2 = 1.65 V to 1.95 V IOH = +8 mA, VCC2 = 3.0 V to 3.6 V 3.3 V 0.3 V, CL = 30 pF, VT = VCC/2 2.5 V 0.2 V, CL = 30 pF, VT = VCC/2 1.8 V 0.15 V, CL = 30 pF, VT = VCC/2 0 VIN 3.6 V 0 VIN 3.6 V
1.35 1.35 0.65 VCC 0.8 0.7 0.35 VCC 2.4 2.0 VCC - 0.45 2.0 VCC - 0.45 2.4 0.4 0.4 0.45 0.4 0.45 0.4 4 4.5 6.5 6.5 6.5 10.25 1 1 3.6 3.6 2 2
V V V V V V V V V V V V V V V V V V ns ns ns A A V V A A
SWITCHING CHARACTERISTICS4, 5 Propagation Delay, tPD A1 to Y1 tPHL, tPLH tPHL, tPLH Propagation Delay, tPD A1 to Y1 tPHL, tPLH Propagation Delay, tPD A1 to Y1 Input Leakage Current II Output Leakage Current IO POWER REQUIREMENTS Power Supply Voltages Quiescent Power Supply Current VCC1 VCC2 ICC1 ICC2
1.65 1.65 Digital Inputs = 0 V or VCC Digital Inputs = 0 V or VCC
NOTES 1 Temperature range is as follows: B Version: -40C to +85C. 2 All typical values are at VCC1 = VCC2, TA = 25C, unless otherwise stated. 3 VIL and VIH levels are specified with respect to VCC1; VOH and VOL levels are with respect to VCC2. 4 Guaranteed by design, not subject to production test. 5 See Test Circuit and Waveforms. Specifications subject to change without notice.
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ADG3231
ABSOLUTE MAXIMUM RATINGS*
(TA = 25C, unless otherwise noted.)
PIN CONFIGURATION
VCC1 1 6 VCC2
VCC to GND . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to +4.6 V A1 Input Voltage . . . . . . . . . . . . . . . . . . . -0.3 V to VCC1 +0.3 V DC Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 mA Operating Temperature Range Industrial (B Version) . . . . . . . . . . . . . . . . . . -40C to +85C Storage Temperature Range . . . . . . . . . . . . . -65C to +150C Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . .150C 6-Lead SOT-23, qJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 229C/W Lead Temperature, Soldering (10 seconds) . . . . . . . . . . . 300C IR Reflow, Peak Temperature (<20 seconds) . . . . . . . . . . 235C
*Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Only one absolute maximum rating may be applied at any one time.
NC 2 (Not to Scale) 5 Y1 A1 3 4 GND
ADG3231
ORDERING GUIDE
Model ADG3231BRJ-REEL ADG3231BRJ-REEL7
Temperature Range -40C to +85C -40C to +85C
Package Description SOT-23 SOT-23
Branding W2B W2B
Package Option RJ-6 RJ-6
PIN FUNCTION DESCRIPTIONS
Pin 1 2 3 4 5 6
Mnemonic VCC1 NC A1 GND Y1 VCC2
Description Supply Voltage 1, can be any supply voltage from 1.65 V to 3.6 V. Not Internally Connected. Digital Input Referred to VCC1. Device Ground Pin. Digital Output Referred to VCC2. Supply Voltage 2, can be any supply voltage from 1.65 V to 3.6 V.
CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADG3231 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
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ADG3231-Typical Performance Characteristics
5.0 4.5 4.0 3.5 ICC1 - nA 3.0 2.5 2.0 1.5 VCC2 = 2.5V 1.0 0.5 0 1.5 2.0 VCC2 = 3.3V VCC2 = 1.8V ICC2 - nA TA = 25 C 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 2.5 3.0 VCC1 - V 3.5 4.0 1.5 2.0 2.5 3.0 VCC2 - V VCC1 = 1.8V 3.5 4.0 0 0 10 20 30 40 50 60 70 TEMPERATURE - C 80 VCC1 = 3.3V VCC1 = 2.5V 5 10 ICC1 - nA TA = 25 C 25 30 VCC2 = 3.3V TA = 25 C
20 15
VCC1 = 3.3V VCC1 = 2.5V VCC1 = 1.8V
TPC 1. ICC1 vs. VCC1
TPC 2. ICC2 vs. VCC2
TPC 3. ICC1 vs. Temperature
30 25 20 ICC2 - nA 15 10 VCC1 = 3.3V TA = 25 C
80 TA = 25 C 70 VCC1 = V CC2 = 3.3V 60 VCC2 = 3.3V VCC2 = 2.5V VCC2 = 1.8V ICC1 - A
2000 1800 1600 1400 ICC2 - A VCC1 = V CC2 = 3.3V TA = 25 C
50 40 30 20 VCC1 = V CC2 = 1.8V
1200 1000 800 600 400 200
5 0
-5 0 10 20 30 40 50 60 70 TEMPERATURE - C 80
VCC1 = V CC2 = 1.8V
10 0 10k
100k
10M 1M FREQUENCY - Hz
100M
0 10k
100k
1M 10M FREQUENCY - Hz
100M
TPC 4. ICC2 vs. Temperature
TPC 5. ICC1 vs. Frequency
TPC 6. ICC2 vs. Frequency
10
6
16 14
8
5
4 TIME - ns 6 TIME - ns
tDIS
3
RISE/FALL TIME - ns
tEN
12 10 8 6 4 2
VCC1 = 3.3V VCC2 = 1.8V TA = 25 C DATA RATE 10Mbps
tEN
4
tPLH, LOW-TO-HIGH TRANSITION
tDIS
2
2 TA = 25 C VCC1 = VCC2 0 1.5 2.0 2.5 3.0 SUPPLY - V 3.5 4.0
1 VCC1 = VCC2 = 3.3V 0 -40 -20 0 20 40 60 TEMPERATURE - C 80
tPHL, HIGH-TO-LOW TRANSITION
0 22 32 42 52 62 72 82 92 102 CAPACITIVE LOAD - pF
TPC 7 Enable, Disable Time vs. Supply .
TPC 8. Enable, Disable Time vs. Temperature
TPC 9. Rise/Fall Time vs. Capacitive Load, A1-Y1
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ADG3231
10 9 8 RISE/FALL TIME - ns 7 6 5 4 3 2 1 0 22 32 42 52 62 72 82 92 102 CAPACITIVE LOAD - pF VCC1 = 1.8V VCC2 = 3.3V TA = 25 C DATA RATE 10Mbps tLH, LOW-TO-HIGH TRANSITION 8 7 PROPAGATION DELAY - ns 6 5 4 3 2 1 0 22 32 42 52 62 72 82 92 102 CAPACITIVE LOAD - pF 0 1.5 VCC1 = 3.3V VCC2 = 3.3V TA = 25 C DATA RATE 10Mbps 8.0 PROPAGATION DELAY - ns
tPLH, LOW-TO-HIGH TRANSITION
6.0
tPHL, A1-Y2
4.0
tPHL, HIGH-TO-LOW TRANSITION
tPLH , A1-Y2
2.0 TA = 25 C VCC1 = VCC2 2.0 2.5 3.0 SUPPLY - V 3.5 4.0
tHL, HIGH-TO-LOW TRANSITION
TPC 10. Rise/Fall Time vs. Capacitive Load, A1-Y1
TPC 11. Propagation Delay vs. Capacitive Load, A1-Y1
TPC 12. Propagation Delay vs. Supply, Bypass Mode
4.0
tPHL, A1-Y2
PROPAGATION DELAY - ns 3.0
TA = 25 C DATA RATE = 10MHz
3.3V A1
3 2
1.8V Y2 3.3V
tPLH, A1-Y2
A1 Y1 1.8V
2.0
3 2
1
TA = 25 C DATA RATE = 10MHz
1.0 TA = 25 C VCC1 = VCC2 = 3.3V 0 -40 -20 0 20 40 60 TEMPERATURE - C 80
TPC 13 Propagation Delay vs. Temperature
TPC 14. Input/Output VCC1 = 3.3 V, VCC2 = 1.8 V
TPC 15. Input/Output VCC1 = 1.8 V, VCC2 = 3.3 V
3.5 3 2.5 VOLTAGE - V 2 1.5 VCC = 1.8V 1 VCC = 1.8V 0.5 SINK 0 0 5 10 VCC = 2.5V
TA = 25 C VCC = VCC1 = VCC2 VCC = 3.3V SOURCE
VCC = 3.3V VCC = 2.5V
15
20
CURRENT - mA
TPC 16. Y1 Sink and Source Current
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ADG3231
TEST CIRCUIT
VCC1 INPUT VT 0V VOH VL VOL
A1 Input
tPLH
OUTPUT
tPHL
The A1 input is capable of accepting inputs outside the VCC1 supply range. For example, the VCC1 supply applied to the device could be 1.8 V while the preceding device could be supplied from a 2.5 V or 3.3 V supply rail. There are no internal diodes to the supply rails, so the ADG3231 can handle inputs above the supply but inside the absolute maximum ratings stated.
Normal Operation
Figure 1. Propagation Delay DESCRIPTION
The ADG3231 is a level translating device designed on a submicron process that operates from supplies as low as 1.65 V. The device is guaranteed for operation over the supply range 1.65 V to 3.6 V. It operates from two supply voltages, allowing bidirectional level translation, i.e., it translates low voltages to high voltages and vice versa. The signal path is unidirectional, meaning data may only flow from A to Z.
VCC1 VCC1
The signal path is from A1 to Y1. The device will level translate the signal applied to A1 to a VCC1 logic level (this level translation can be to either a higher or a lower supply) and route the signal to the Y1 output, which will have standard VOL/VOH levels for VCC2 supplies. The supplies in Figure 2 may be any combination of supplies, e.g., VCC1 and VCC2 may be anywhere in the range of 1.65 V to 3.6 V.
VCC2
VCC2
A1 DEVICE 1 SIGNAL INPUT
Y1 DEVICE 2 SIGNAL OUTPUT
ADG3231
GND
Figure 2. Typical Operation of the ADG3231 Level Translating Switch
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ADG3231
OUTLINE DIMENSIONS 6-Lead Small Outline Transistor Package [SOT-23] (RJ-6)
Dimensions shown in millimeters
2.90 BSC
6
5
4
1.60 BSC
1 2 3
2.80 BSC
PIN 1 0.95 BSC 1.30 1.15 0.90 1.90 BSC
1.45 MAX
0.22 0.08 10 4 0 0.60 0.45 0.30
0.15 MAX
0.50 0.30
SEATING PLANE
COMPLIANT TO JEDEC STANDARDS MO-178AB
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C03298-0-5/03(0)

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