FEATURES
FUNCTIONAL BLOCK DIAGRAM
Operates from 1.65 V to 3.6 V supply rails
Unidirectional signal path
Up/down level translation
Ultracompact 6-lead SOT-23 package
Output short-circuit protection
LVTTL-/CMOS-compatible inputs
VCC1
VCC2
A
Y
GND
03298-001
Data Sheet
1.65 V to 3.6 V, Single-Channel Level
Translator in SOT-23 Package
ADG3231
Figure 1.
APPLICATIONS
Level translation in
PDAs
Handsets
MP3 players
GENERAL DESCRIPTION
The ADG3231 is a single-channel level translator designed on a
submicron process that is guaranteed to operate over the 1.65 V
to 3.6 V supply range. The device can be used in applications
requiring communication between digital devices operating
from multiple supply voltages. The logic levels on each side of
the device are set by the two supply voltages, VCC1 for A and
VCC2 for Y. The signal path is unidirectional, meaning data can
flow only from A to Y.
The ADG3231 can operate with any combination of VCC1
and VCC2 supply voltages within the 1.65 V to 3.6 V range,
allowing the part to perform either up (VCC1 < VCC2) or down
(VCC1 > VCC2) level translation. The output stage is protected
Rev. C
against current overload, which can occur when the Y pin is
accidentally shorted to the VCC2 or GND rails.
The ADG3231 is available in the SOT-23 (2.8 mm × 2.9 mm
× 1.3 mm) ultracompact package, making the part ideal for
applications where space is critical.
PRODUCT HIGHLIGHTS
1.
Up/down level translation.
2.
Guaranteed to operate with any supply combination within
the 1.65 V to 3.6 V range.
3.
Output short-circuit protection.
4.
Available in ultracompact SOT-23 package.
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Tel: 781.329.4700 ©2003–2012 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
ADG3231
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Absolute Maximum Ratings ............................................................4
Applications ....................................................................................... 1
ESD Caution...................................................................................4
Functional Block Diagram .............................................................. 1
Pin Configurations and Function Descriptions ............................5
General Description ......................................................................... 1
Typical Performance Characteristics ..............................................6
Product Highlights ........................................................................... 1
Theory of Operation .........................................................................9
Revision History ............................................................................... 2
Outline Dimensions ....................................................................... 10
Specifications..................................................................................... 3
Ordering Guide .......................................................................... 10
REVISION HISTORY
9/12—Rev. B to Rev. C
Removed SOT-66 Package (Throughout) ..................................... 1
Updated Outline Dimensions ....................................................... 10
Changes to Ordering Guide .......................................................... 10
5/06—Rev. A to Rev. B
Deleted Figure 11 and Figure 12..................................................... 7
Changes to Ordering Guide .......................................................... 10
12/04—Rev. 0 to Rev. A
Updated Format .................................................................. Universal
Added SOT-66 Package ..................................................... Universal
Change to Data Sheet Title .............................................................. 1
Changes to Features, Applications, General Description
and Product Highlights Sections .....................................................1
Changes to Figure 1 ...........................................................................1
Changes to Table 1.............................................................................3
Changes to Figure 2 and Figure 3 ....................................................3
Deleted TPC 1 to TPC 6 ...................................................................6
Changes to Figure 13 through Figure 20 ........................................7
Changes to Theory of Operation Section.......................................9
Updated Outline Dimensions ....................................................... 10
Changes to Ordering Guide .......................................................... 10
5/03—Revision 0: Initial Version
Rev. C | Page 2 of 12
Data Sheet
ADG3231
SPECIFICATIONS
VCC1 = VCC2 = 1.65 V to 3.6 V, GND = 0 V. All specifications TMIN to TMAX, unless otherwise noted. Temperature range for the B version is
−40°C to +85°C.
Table 1.
Parameter
LOGIC INPUTS/OUTPUTS
Input High Voltage2
Min
VIH
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 μA, VCC2 = 3.0 V to 3.6 V
IOH = –100 μA, VCC2 = 2.3 V to 2.7 V
IOH = –100 μA, VCC2 = 1.65 V to 1.95 V
IOH = −4 mA, VCC2 = 2.3 V to 2.7 V
IOH = −4 mA, VCC2 = 1.65 V to 1.95 V
IOH = −8 mA, VCC2 = 3.0 V to 3.6 V
IOL = 100 μA, VCC2 = 3.0 V to 3.6 V
IOL = 100 μA, VCC2 = 2.3 V to 2.7 V
IOL = 100 μA, VCC2 = 1.65 V to 1.95 V
IOL = 4 mA, VCC2 = 2.3 V to 2.7 V
IOL = 4 mA, VCC2 = 1.65 V to 1.95 V
IOL = 8 mA, VCC2 = 3.0 V to 3.6 V
1.35
1.35
0.65 VCC1
VIL
Output High Voltage
VOH
Output Low Voltage
VOL
Quiescent Power Supply Current
tPHL, tPLH
tPHL, tPLH
tPHL, tPLH
II
IO
VCC1
VCC2
ICC1
ICC2
4
4.5
6.5
1.65
1.65
Digital inputs = 0 V or VCC1
Digital inputs = 0 V or VCC2
All typical values are at VCC1 = VCC2, TA = 25°C, unless otherwise noted.
Guaranteed by design, not subject to production test.
VCC1
50%
tPLH
tPHL
0V
VCC2
OUTPUT
50%
0V
Figure 2. Timing Diagram
Rev. C | Page 3 of 12
Max
Unit
0.4
0.4
0.45
0.4
0.45
0.4
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
6.5
6.5
10.25
±1
±1
ns
ns
ns
μA
μA
3.6
3.6
2
2
V
V
μA
μA
2.4
2.0
VCC2 − 0.45
2.0
VCC2 − 0.45
2.4
3.3 V ± 0.3 V, CL = 30 pF, see Figure 2
2.5 V ± 0.2 V, CL = 30 pF, see Figure 2
1.8 V ± 0.15 V, CL = 30 pF, see Figure 2
0 ≤ VIN ≤ 3.6 V
0 ≤ VIN ≤ 3.6 V
INPUT
Typ1
0.8
0.7
0.35 VCC1
03298-020
2
Conditions
Input Low Voltage2
SWITCHING CHARACTERISTICS2
Propagation Delay, tPD A to Y
Propagation Delay, tPD A to Y
Propagation Delay, tPD A to Y
Input Leakage Current
Output Leakage Current
POWER REQUIREMENTS
Power Supply Voltages
1
Symbol
ADG3231
Data Sheet
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 2.
Parameter
VCC to GND
Input Voltage for A
DC Output Current
Operating Temperature Range
Industrial (B Version)
Storage Temperature Range
Junction Temperature
θJA Thermal Impedance
6-Lead SOT-23
Lead Temperature, Soldering (10 sec)
IR Reflow, Peak Temperature (<20 sec)
Rating
−0.3 V to +4.6 V
−0.3 V to VCC1 + 0.3 V
25 mA
−40°C to +85°C
−65°C to +150°C
150°C
229°C/W
300°C
235°C
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 indicated in the operational
section 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.
ESD CAUTION
Rev. C | Page 4 of 12
Data Sheet
ADG3231
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
VCC1 1
PIN 1
INDICATOR
6
VCC2
ADG3231
A 3
5 Y
TOP VIEW
(Not to Scale)
4
GND
NC = NO CONNECT
03298-002
NC 2
Figure 3. SOT-23
Table 3. Pin Function Descriptions
Pin Number
1
2
3
4
5
6
Mnemonic
VCC1
NC
A
GND
Y
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.
Rev. C | Page 5 of 12
ADG3231
Data Sheet
TYPICAL PERFORMANCE CHARACTERISTICS
30
5.0
VCC1 = 3.3V
TA = 25°C
4.5
25
4.0
3.0
ICC2 (nA)
ICC1 (nA)
VCC2 = 3.3V
20
3.5
2.5
2.0
1.5
VCC2 = 2.5V
10
VCC2 = 1.8V
5
VCC2 = 3.3V
VCC2 = 2.5V
15
1.0
2.0
2.5
3.0
3.5
03298-007
0
1.5
0
03298-004
VCC2 = 1.8V
0.5
–5
0
4.0
10
20
VCC1 (V)
30
40
50
60
TEMPERATURE (°C)
70
80
Figure 7. ICC2 vs. Temperature
Figure 4. ICC1 vs. VCC1
80
5.0
TA = 25°C
TA = 25°C
4.5
70
4.0
60
VCC1 = VCC2 = 3.3V
50
3.0
ICC1 (µA)
ICC2 (nA)
3.5
2.5
2.0
40
30
1.5
VCC1 = 3.3V
VCC1 = 2.5V
VCC1 = VCC2 = 1.8V
20
1.0
2.0
2.5
3.0
3.5
0
10k
4.0
03298-008
VCC1 = 1.8V
0
1.5
10
03298-005
0.5
100k
VCC2 (V)
Figure 5. ICC2 vs. VCC2
1M
FREQUENCY (Hz)
10M
100M
10M
100M
Figure 8. ICC1 vs. Frequency
30
2000
TA = 25°C
VCC2 = 3.3V
1800
25
1600
1400
VCC1 = 2.5V
15
VCC1 = 1.8V
10
1200
VCC1 = VCC2 = 3.3V
1000
800
600
VCC1 = VCC2 = 1.8V
5
0
0
10
20
30
40
50
60
TEMPERATURE (°C)
70
03298-009
400
03298-006
ICC1 (nA)
ICC2 (µA)
VCC1 = 3.3V
20
200
0
10k
80
Figure 6. ICC1 vs. Temperature
100k
1M
FREQUENCY (Hz)
Figure 9. ICC2 vs. Frequency
Rev. C | Page 6 of 12
Data Sheet
ADG3231
16
8.0
14
PROPAGATION DELAY (ns)
VCC1 = 3.3V
VCC2 = 1.8V
TA = 25°C
DATA RATE 10Mbps
RISE/FALL TIME (ns)
12
10
tLH,LOW-TO-HIGH TRANSITION
8
6
4
6.0
tPHL, A TO Y
4.0
tPLHL, A TO Y
2.0
0
22
03298-012
2
32
42
52
72
62
CAPACITIVE LOAD (pF)
82
92
TA = 25°C
VCC1 = VCC2
0
1.5
102
Figure 10. Rise/Fall Time vs.
Capacitive Load (3.3 V to 1.8 V Level Translation)
2.0
2.5
3.0
SUPPLY VOLTAGE (V)
3.5
4.0
Figure 13. Propagation Delay vs. Supply Voltage
4.0
10
VCC1 = 1.8V
VCC2 = 3.3V
TA = 25°C
DATA RATE 10Mbps
8
tPHL, A TO Y
PROPAGATION DELAY (ns)
9
7
tLH, LOW-TO-HIGH TRANSITION
6
5
4
3
2
3.0
tPLH, A TO Y
2.0
1.0
03298-013
tHL, HIGH-TO-LOW TRANSITION
1
0
22
32
42
62
52
72
CAPACITIVE LOAD (pF)
82
92
VCC1 = VCC2 = 3.3V
0
–40
–20
0
102
Figure 11. Rise/Fall Time vs.
Capacitive Load (1.8 V to 3.3 V Level Translation)
03298-016
RISE/FALL TIME (ns)
03298-015
tHL, HIGH-TO-LOW TRANSITION
20
40
TEMPERATURE (°C)
60
80
Figure 14. Propagation Delay vs. Temperature
8
VCC1 = 3.3V
VCC2 = 3.3V
TA = 25°C
DATA RATE 10Mbps
TA = 25°C
DATA RATE = 10MHz
3.3V
6
tPLH, LOW-TO-HIGH TRANSITION
A
5
Y
4
1.8V
tPHL, HIGH-TO-LOW TRANSITION
3
3
2
2
1
32
42
52
62
72
CAPACITIVE LOAD (pF)
82
92
03298-017
0
22
03298-014
PROPAGATION DELAY (ns)
7
102
Figure 12. Propagation Delay vs. Capacitive Load
Figure 15. Input/Output VCC1 = 3.3 V, VCC2 = 1.8 V
Rev. C | Page 7 of 12
ADG3231
Data Sheet
3.5
TA = 25°C
VCC = VCC1 = VCC2
A
3.0
1.8V
VCC = 3.3V
Y
3.3V
OUTPUT VOLTAGE (V)
1
SOURCE
VCC = 2.5V
2.0
1.5
VCC = 1.8V
VCC = 3.3V
1.0
VCC = 1.8V
VCC = 2.5V
0.5
03298-018
TA = 25°C
DATA RATE = 10MHz
2.5
03298-019
3
2
SINK
0
0
5
10
CURRENT (mA)
15
Figure 17. Output Voltage vs. Sink and Source Current
Figure 16. Input/Output VCC1 = 1.8 V, VCC2 = 3.3 V
Rev. C | Page 8 of 12
20
Data Sheet
ADG3231
THEORY OF OPERATION
The ADG3231 is a single-channel level translator designed on a
submicron process that is guaranteed to operate over the 1.65 V
to 3.6 V supply range. The device can be used in applications
requiring communication between digital devices operating
from multiple supply voltages. The logic levels on each side of
the device are set by the two supply voltages, VCC1 for A, and
VCC2 for Y. The signal path is unidirectional, meaning data can
flow only from A to Y.
By limiting the current delivered into the load, for example,
~1.7 mA with VCC2 = 3.6 V, the output stage is protected against
current overload, which can occur when the Y pin is
accidentally shorted to the VCC2 or GND rails.
The short-circuit protection circuitry works by limiting
the output current when the output voltage exceeds
VOL (A = 0 logic) or is less than VOH (A = 1 logic) threshold
values specified for the VCC2 supply voltage used.
The ADG3231 can operate with any combination of VCC1
and VCC2 supply voltages within the 1.65 V to 3.6 V range,
allowing the part to perform either up (VCC1 < VCC2) or down
(VCC1 > VCC2) level translation.
VCC1
Figure 18 shows a typical application for the ADG3231 where
the device performs level translation from VCC1-compatible
levels to VCC2-compatible levels to allow proper communication
between the two digital devices, DEVICE 1 and DEVICE 2.
VCC1
VCC2
A
VCC2
Y
DEVICE 1
SIGNAL OUTPUT
ADG3231
GND
Figure 18. Typical Application of the ADG3231 Level Translator
Rev. C | Page 9 of 12
03298-021
DEVICE 2
SIGNAL INPUT
ADG3231
Data Sheet
OUTLINE DIMENSIONS
3.00
2.90
2.80
1.70
1.60
1.50
6
5
4
1
2
3
3.00
2.80
2.60
PIN 1
INDICATOR
0.95 BSC
1.90
BSC
1.45 MAX
0.95 MIN
0.15 MAX
0.05 MIN
0.50 MAX
0.30 MIN
0.20 MAX
0.08 MIN
SEATING
PLANE
10°
4°
0°
0.60
BSC
0.55
0.45
0.35
12-16-2008-A
1.30
1.15
0.90
COMPLIANT TO JEDEC STANDARDS MO-178-AB
Figure 19. 6-Lead Small Outline Transistor Package [SOT-23]
(RJ-6)
Dimensions shown in millimeters
ORDERING GUIDE
Model 1
ADG3231BRJ-REEL7
Temperature Range
−40°C to +85°C
Package Description
6-Lead SOT-23
Package Option
RJ-6
Branding
W2B
ADG3231BRJZ-REEL
ADG3231BRJZ-REEL7
−40°C to +85°C
−40°C to +85°C
6-Lead SOT-23
6-Lead SOT-23
RJ-6
RJ-6
W2B #
W2B #
1
Z = RoHS Compliant Part, # denotes lead-free may be top or bottom marked.
Rev. C | Page 10 of 12
Data Sheet
ADG3231
NOTES
Rev. C | Page 11 of 12
ADG3231
Data Sheet
NOTES
©2003–2012 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
%03298-0-9/12(C)
Rev. C | Page 12 of 12