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Low Voltage 1.65 V to 3.6 V, Bidirectional Logic Level Translation, Bypass Switch ADG3233*
FEATURES Operates from 1.65 V to 3.6 V Supply Rails Bidirectional Level Translation, Unidirectional Signal Path 8-Lead SOT-23 and MSOP Packages Bypass or Normal Operation Short Circuit Protection APPLICATIONS JTAG Chain Bypassing Daisy-Chain Bypassing Digital Switching FUNCTIONAL BLOCK DIAGRAM
VCC1 VCC2 VCC1 A1 Y1
VCC1 0
VCC1 VCC2
VCC2 Y2
A2
1
EN
GND
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
The ADG3233 is a bypass switch 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 only flow from A to Y. This type of device may be used in applications that require a bypassing function. It is ideally suited to bypassing devices in a JTAG chain or in a daisy-chain loop. One switch could be used for each device or a number of devices, thus allowing easy bypassing of one or more devices in a chain. This may be particularly useful in reducing the time overhead in testing devices in the JTAG chain or in daisy-chain applications where the user does not wish to change the settings of a particular device. The bypass switch is packaged in two of the smallest footprints available for its required pin count. The 8-lead SOT-23 package requires only 8.26 mm 8.26 mm board space, while the MSOP package occupies approximately 15 mm 15 mm board area.
1. Bidirectional level translation matches any voltage level from 1.65 V to 3.6 V. 2. The bypass switch offers high performance and is fully guaranteed across the supply range. 3. Short circuit protection. 4. Tiny 8-lead SOT-23 package, 8.26 mm or 8-lead MSOP. 8.26 mm board area,
Table I. Truth Table
EN L H
Signal Path A1Y2, Y1VCC1 A1Y1, A2Y2
Function Enable Bypass Mode Enable Normal Mode
*Patent Pending
REV. 0
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.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 (c) 2003 Analog Devices, Inc. All rights reserved.
= 1.65 ADG3233-SPECIFICATIONS1 (V = V noted.) V to 3.6 V, GND = 0 V, All specifications T otherwise
CC1 CC2
MIN
to TMAX, unless
Parameter
LOGIC INPUTS/OUTPUTS Input High Voltage4 Input Low Voltage4
3
Symbol
VIH
Conditions
(VCC2 = 1.65 V to 3.6 V, GND = 0 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 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, 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 = -4 mA, VCC1 = 2.3 V to 2.7 V VCC1 = 1.65 V to 1.95 V IOH = -8 mA, VCC1 = 3.0 V to 3.6 V IOL = +100 A, VCC1 = 3.0 V to 3.6 V VCC1 = 2.3 V to 2.7 V VCC1 = 1.65 V to 1.95 V IOL = +4 mA, VCC1 = 2.3 V to 2.7 V VCC1 = 1.65 V to 1.95 V IOL = +8 mA, VCC1 = 3.0 V to 3.6 V (VCC1 = 1.65 V to 3.6 V, GND = 0 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 IOL = +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 IOL = +4 mA, VCC2 = 2.3 V to 2.7 V VCC2 = 1.65 V to 1.95 V IOL = +8 mA, VCC2 = 3.0 V to 3.6 V
Min
Typ2
Max
Unit
V V V V V V V V V V V V V V V V V V V V V V V V V V V V V 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 0.40 0.40 0.45 0.40 0.45 0.40 2.4 2.0 VCC - 0.45 2.0 VCC - 0.45 2.4 0.40 0.40 0.45 0.40 0.45 0.40
VIL
Output High Voltage (Y1)
VOH
Output Low Voltage (Y1)
VOL
LOGIC OUTPUTS3 Output High Voltage (Y2)
VOH
Output Low Voltage (Y2)
VOL
SWITCHING CHARACTERISTICS 4, 5 VCC = VCC1 = VCC2 = 3.3 V 0.3 V Propagation Delay, tPD A1 to Y1 Normal Mode A2 to Y2 Normal Mode A1 to Y2 Bypass Mode ENABLE Time EN to Y1 DISABLE Time EN to Y1 ENABLE Time EN to Y2 DISABLE Time EN to Y2 VCC = VCC1 = VCC2 = 2.5 V 0.2 V Propagation Delay, tPD A1 to Y1 Normal Mode A2 to Y2 Normal Mode A1 to Y2 Bypass Mode ENABLE Time EN to Y1 DISABLE Time EN to Y1 ENABLE Time EN to Y2 DISABLE Time EN to Y2 VCC = VCC1 = VCC2 = 1.8 V 0.15 V Propagation Delay, tPD A1 to Y1 Normal Mode A2 to Y2 Normal Mode A1 to Y2 Bypass Mode ENABLE Time EN to Y1 DISABLE Time EN to Y1 ENABLE Time EN to Y2 DISABLE Time EN to Y2
tPHL, tPLH tPHL, tPLH tPHL, tPLH tEN tDIS tEN tDIS
CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2
3.5 3.5 4 4 2.8 4.5 4
5.4 5.4 6.5 6 4 6.5 6.5
ns ns ns ns ns ns ns
tPHL, tPLH tPHL, tPLH tPHL, tPLH tEN tDIS tEN tDIS
CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2
4.5 4.5 4.5 5 3.2 5 4.8
6.2 6.2 6.5 7.2 4.7 7.7 7.2
ns ns ns ns ns ns ns
tPHL, tPLH tPHL, tPLH tPHL, tPLH tEN tDIS tEN tDIS
CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2 CL = 30 pF, VT = VCC/2
6.7 6.5 6.5 7 4.4 7 6.5
10 10 10.25 10.5 6.5 12 10.5
ns ns ns ns ns ns ns
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ADG3233
Parameter SWITCHING CHARACTERISTICS Input Leakage Current Output Leakage Current POWER REQUIREMENTS Power Supply Voltages Quiescent Power Supply Current Increase in ICC per Input
4, 5
Symbol (continued) II IO VCC1 VCC2 ICC1 ICC2 ICC1
Conditions 0 0 VIN VIN 3.6 V 3.6 V
Min
Typ2
Max 1 1
Unit A A V V A A A
1.65 1.65 Digital Inputs = 0 V or V CC Digital Inputs = 0 V or V CC VCC = 3.6 V, One Input at 3.0 V; Others at VCC or GND
3.6 3.6 2 2 0.75
NOTES 1 Temperature range is as follows: B Version: -40C to +85C. 2 All typical values are at V CC = VCC1 = VCC2, TA = 25C, unless otherwise stated. 3 VIL and VIH levels are specified with respect to V CC1, VOH and VOL levels for Y1 are specified with respect to VCC1, and VOH and VOL levels are specified for Y2 with respect to VCC2. 4 Guaranteed by design, not subject to production test. 5 See Test Circuits and Waveforms. Specifications subject to change without notice.
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ADG3233
ABSOLUTE MAXIMUM RATINGS*
(TA = 25C, unless otherwise noted.)
Lead Temperature, Soldering (10 sec) . . . . . . . . . . . . . 300C IR Reflow, Peak Temperature (<20 sec) . . . . . . . . . . . . 235C
*
VCC to GND . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to +4.6 V Digital Inputs to GND . . . . . . . . . . . . . . . . . . -0.3 V to +4.6 V A1, EN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to +4.6 V A2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to VCC1 + 0.3V DC Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 mA Operating Temperature Range Industrial (B Version) . . . . . . . . . . . . . . . . . -40C to +85C Storage Temperature Range . . . . . . . . . . . . . -65C to +150C Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 150C 8-Lead MSOP JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 206C/W JC Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 43C/W 8-Lead SOT-23 JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 211C/W
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.
ORDERING GUIDE Model ADG3233BRJ-REEL ADG3233BRJ-REEL7 ADG3233BRM ADG3233BRM-REEL ADG3233BRM-REEL7 Temperature Range -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C Package Description SOT-23 SOT-23 MSOP MSOP MSOP Branding W1B W1B W1B W1B W1B Package Option RJ-8 RJ-8 RM-8 RM-8 RM-8
PIN CONFIGURATIONS 8-Lead SOT-23 Package (RJ-8)
VCC1 1 A1 2 A2 3
8
8-Lead MSOP Package (RM-8)
VCC2 1 Y1 2 Y2 3
8
VCC2 Y1
VCC1 A1
ADG3233
7
ADG3233
7
6 Y2 TOP VIEW EN 4 (Not to Scale) 5 GND
6 A2 TOP VIEW GND 4 (Not to Scale) 5 EN
PIN FUNCTION DESCRIPTIONS
Pin RJ-8 RM-8 Mnemonic Description 1 8 2 3 7 6 4 5 8 1 7 6 2 3 5 4 VCC1 VCC2 A1 A2 Y1 Y2 EN GND Supply Voltage 1, can be any supply voltage from 1.65 V to 3.6 V. Supply Voltage 2, can be any supply voltage from 1.65 V to 3.6 V. Input Referred to VCC1. Input Referred to VCC2. Output Referred to VCC1. Output Referred to VCC2. Voltage levels appearing at Y2 will be translated from VCC1 voltage level to a VCC2 voltage level. Active Low Device Enable. When low, bypass mode is enabled; when high, the device is in normal mode. Device Ground.
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 ADG3233 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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Typical Performance Characteristics-ADG3233
5.0 4.5 4.0 3.5
ICC1 - nA
TA = 25 C
5.0 4.5 4.0 3.5 TA = 25 C
30 VCC2 = 3.3V TA = 25 C
25
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
3.0 2.5 2.0 1.5 1.0 0.5 0 VCC1 = 1.8V 1.5 2.0 2.5 3.0 VCC2 - V 3.5 4.0 VCC1 = 3.3V VCC1 = 2.5V
ICC1 - nA
20 15
VCC1 = 3.3V VCC1 = 2.5V VCC1 = 1.8V
10
5
0 0 10 20 30 40 50 60 70 TEMPERATURE - C 80
2.5 3.0 VCC1 - V
3.5
4.0
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
2000 1800 1600 TA = 25 C
80 TA = 25 C 70 VCC1 = V CC2 = 3.3V 60
VCC2 = 3.3V
1400
ICC1 - A
VCC2 = 2.5V VCC2 = 1.8V
VCC1 = V CC2 = 3.3V 1000 800 600 400 VCC1 = V CC2 = 1.8V
ICC1 - A
1200
50 40 30 20 VCC1 = V CC2 = 1.8V 10 0 10k
5 0
-5 0 10 20 30 40 50 60 70 TEMPERATURE - C 80
200 0 10k 100k 1M 10M FREQUENCY - Hz 100M
100k
10M 1M FREQUENCY - Hz
100M
TPC 4. ICC2 vs. Temperature
TPC 5. ICC1 vs. Frequency, Normal Mode
TPC 6. ICC1 vs. Frequency, Bypass Mode
2000 1800 1600 1400 VCC1 = V CC2 = 3.3V TA = 25 C
2000 1800 1600 VCC1 = V CC2 = 3.3V 1400 TA = 25 C
10
8
TIME - ns
ICC2 - A
ICC2 - A
1200 1000 800 600 400 200 0 10k
1200 1000 800 600 400 200 VCC1 = V CC2 = 1.8V
6
tEN tDIS
4
VCC1 = V CC2 = 1.8V
2 TA = 25 C VCC1 = VCC2 100k 1M 10M FREQUENCY - Hz 100M 0 1.5 2.0 2.5 3.0 SUPPLY - V 3.5 4.0
100k
1M 10M FREQUENCY - Hz
100M
0 10k
TPC 7. ICC2 vs. Frequency, Normal Mode
TPC 8. ICC2 vs. Frequency, Bypass Mode
TPC 9. Y1 Enable, Disable Time vs. Supply
REV. 0
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ADG3233
10 6 6 8 5 5
tEN
4 TIME - ns
tEN
TIME - ns
4
TIME - ns
6
tEN
4
tDIS
3
3
tDIS
tDIS
2
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
1 VCC1 = VCC2 = 3.3V 0 -40 -20 0 20 40 60 TEMPERATURE - C 80
TPC 10. Y2 Enable, Disable Time vs. Supply
TPC 11. Y1 Enable, Disable Time vs. Temperature
TPC 12. Y2 Enable, Disable Time vs. Temperature
16 14 VCC1 = 3.3V VCC2 = 1.8V TA = 25 C DATA RATE 10Mbps
16 14
RISE/FALL TIME - ns
RISE/FALL TIME - ns
10 8
10 8 6 4 2 0
RISE/FALL TIME - ns
12
12
VCC1 = 3.3V VCC2 = 1.8V TA = 25 C DATA RATE 10Mbps
10 9
VCC1 = 1.8V VCC2 = 3.3V TA = 25 C 8 DATA RATE 10Mbps tPLH, LOW-TO-HIGH TRANSITION 7 6 5 4 3 2 1
tPLH, LOW-TO-HIGH TRANSITION
tPLH, LOW-TO-HIGH TRANSITION
6 4 2 0 22 32 42 52 62 72 82 CAPACITIVE LOAD - pF 92 102
tPHL, HIGH-TO-LOW TRANSITION
tPHL, HIGH-TO-LOW TRANSITION
tPHL, HIGH-TO-LOW TRANSITION
22
32
42
52
62
72
82
92
102
0 22 32 42 52 62 72 82 CAPACITIVE LOAD - pF 92 102
CAPACITIVE LOAD - pF
TPC 13. Rise/Fall Time vs. Capacitive Load, A1-Y1, A2-Y2
TPC 14. Rise/Fall Time vs. Capacitive Load, A1-Y2, Bypass Mode
TPC 15. Rise/Fall Time vs. Capacitive Load, A1-Y1, A2-Y2
10 9
RISE/FALL TIME - ns
PROPAGATION DELAY - ns
PROPAGATION DELAY - ns
VCC1 = 1.8V VCC2 = 3.3V TA = 25 C 8 DATA RATE 10Mbps t , LOW-TO-HIGH TRANSITION 7 LH 6 5 4 3 2 1 0 22 32 42 52 62 72 82 CAPACITIVE LOAD - pF 92 102
8 7 6 5 4
VCC1 = 3.3V VCC2 = 3.3V TA = 25 C DATA RATE 10Mbps
8 7 6 5 4 3 2 1 0
tPLH, LOW-TO-HIGH TRANSITION
tPLH, LOW-TO-HIGH TRANSITION
tPHL, HIGH-TO-LOW TRANSITION
3 2 1 0 22 32 42 52 62 72 82 CAPACITIVE LOAD - pF 92 102
tPHL, HIGH-TO-LOW TRANSITION
tHL, HIGH-TO-LOW TRANSITION
VCC1 = 3.3V VCC2 = 3.3V TA = 25 C DATA RATE 10Mbps 22 32 42 52 62 72 82 CAPACITIVE LOAD - pF 92 102
TPC 16. Rise/Fall Time vs. Capacitive Load, A1-Y2, Bypass Mode
TPC 17. Propagation Delay vs. Capacitive Load A1 to Y1
TPC 18. Propagation Delay vs. Capacitive Load A2 to Y2
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ADG3233
8 7
PROPAGATION DELAY - ns
8.0 7.0 PROPAGATION DELAY - ns 6.0 5.0
8.0
6 5 4 3 2 1 0
PROPAGATION DELAY - ns
tPLH, LOW-TO-HIGH TRANSITION
tPLH, A1-Y1 tPHL, A2-Y2
6.0
tPHL, A1-Y2
4.0
tPHL, HIGH-TO-LOW TRANSITION
4.0 3.0 2.0 1.0 0 1.5 2.0 2.5 3.0 SUPPLY - V 3.5 4.0
tPHL, A1-Y1
TA = 25 C VCC1 = VCC2
tPLH , A1-Y2
2.0 TA = 25 C VCC1 = VCC2 0 1.5 2.0 2.5 3.0 SUPPLY - V 3.5 4.0
VCC1 = 3.3V VCC2 = 3.3V TA = 25 C DATA RATE 10Mbps 22 32 42 52 62 72 82 CAPACITIVE LOAD - pF 92 102
tPLH, A2-Y2
TPC 19. Propagation Delay vs. Capacitive Load A1 to Y2, Bypass Mode
TPC 20. Propagation Delay vs. Supply, Normal Mode
TPC 21. Propagation Delay vs. Supply, Bypass Mode
4.0 3.5
PROPAGATION DELAY - ns
tPHL, A2-Y2
4.0
tPHL, A1-Y1
PROPAGATION DELAY - ns
3.0
tPHL, A1-Y2 tPLH, A1-Y2
3 1
TA = 25 C EN = HIGH A1 Y1 3.3V 1.8V
3.0 2.5
tPLH, A1-Y1
2.0
2.0
tPLH, A2-Y2
1.5 1.0 0.5 0 -40 TA = 25 C VCC1 = VCC2 = 3.3V -20 0 20 40 60 TEMPERATURE - C 80
A2
Y2
3.3V
1.0
2
TA = 25 C VCC1 = VCC2 = 3.3V 0 -40 -20 0 20 40 60 TEMPERATURE - C 80
4
DATA RATE = 10MHz
TPC 22. Propagation Delay vs. Temperature, Normal Mode
TPC 23. Propagation Delay vs. Temperature, Bypass Mode
TPC 24. Normal Mode VCC1 = 3.3 V, VCC2 = 1.8 V
TA = 25 C DATA RATE = 10MHz
3.3V
A1
3
3.3V
A1
1.8V Y2 3.3V
A1 Y2 1.8V
1.8V Y1
1
3 2
3.3V
3 2
A2
1.8V Y2 TA = 25 C DATA RATE = 10MHz
Y1
1.8V
4
2
1
TA = 25 C DATA RATE = 10MHz
TPC 25. Bypass Mode, VCC1 = 3.3 V, VCC2 = 1.8 V
TPC 26. Normal Mode VCC1 = 1.8 V, VCC2 = 3.3 V
TPC 27. Bypass Mode, VCC1 = 1.8 V, VCC2 = 3.3 V
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ADG3233
3.5 3 VCC = 3.3V 2.5
VOLTAGE - V
TA = 25 C VCC = VCC1 = VCC2
2 1.5
VCC = 2.5V
SOURCE
VCC = 1.8V 1 VCC = 1.8V 0.5 SINK 0 0 5 10 CURRENT - mA VCC = 2.5V
VCC = 3.3V
15
20
TPC 28. Y1 and Y2 Source and Sink Current
VCC1 INPUT VT
EN
VCC1 VT 0V
tPLH
OUTPUT
tPHL
0V VOH VT VOL
A1
tEN
tDIS
VCC1 0V
Figure 1. Propagation Delay
A2
VCC1 0V Y2 VT VOH VT VOL
VCC1 EN VT 0V
Figure 3. Y2 Enable and Disable Times
tEN
Y1 (A1 @ GND) VT
tDIS
VOH VT VOL
Figure 2. Y1 Enable and Disable Times
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ADG3233
DESCRIPTION
The ADG3233 is a bypass switch 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 only flow from A to Y.
A1 and EN Input
rail, there are no internal diodes to the supply rails, so the device can handle inputs above the supply but inside the absolute maximum ratings.
Normal Operation
The A1 and enable (EN) inputs have VIL/VIH logic levels so that the part can accept logic levels of VOL/VOH from Device 0 or the controlling device independent of the value of the supply being used by the controlling device. These inputs (A1, EN) are capable of accepting inputs outside the VCC1 supply range. For example, the VCC1 supply applied to the bypass switch could be 1.8 V while Device 0 could be operating from a 2.5 V or 3.3 V supply
Figure 4 shows the bypass switch being used in normal mode. In this mode, the signal paths are from A1 to Y1 and A2 to Y2. The device will level translate the signal applied to A1 to a VCC1 logic level (this level translation can be either to a higher or lower supply) and route the signal to the Y1 output, which will have standard VOL/VOH levels for VCC1 supplies. The signal is then passed through Device 1 and back to the A2 input pin of the bypass switch. The logic level inputs of A2 are with respect to the VCC1 supply. The signal will be level translated from VCC1 to VCC2 and routed to the Y2 output pin of the bypass switch. Y2 output logic levels are with respect to the VCC2 supply.
VCC0
VCC1
VCC2
DEVICE 0 SIGNAL INPUT
DEVICE 1
DEVICE 2 SIGNAL OUTPUT
VCC1 A1 A2
VCC2
Y1 Y2
LOGIC 1 EN BYPASS SWITCH
Figure 4. Bypass Switch in Normal Mode
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ADG3233
VCC0 VCC1 VCC2
DEVICE 0 SIGNAL INPUT
DEVICE 1
DEVICE 2 SIGNAL OUTPUT
VCC1 A1 A2
VCC2 Y1 Y2
LOGIC 0 EN BYPASS SWITCH
Figure 5. Bypass Switch in Bypass Mode
Bypass Operation
Figure 5 illustrates the device as used in bypass operation. The signal path is now from A1 directly to Y2, thus bypassing Device 1 completely. The signal will be level translated to a VCC2 logic level and available on Y2, where it may be applied
directly to the input of Device 2. In bypass mode, Y1 is pulled up to VCC1. The three supplies in Figures 4 and 5 may be any combination of supplies, i.e., VCC0, VCC1, and VCC2 may be any combination of supplies, for example, 1.8 V, 2.5 V, and 3.3 V.
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ADG3233
OUTLINE DIMENSIONS 8-Lead Mini Small Outline Package [MSOP] (RM-8)
Dimensions shown in millimeters
3.00 BSC
8
5
3.00 BSC
1 4
4.90 BSC
PIN 1 0.65 BSC 0.15 0.00 0.38 0.22 COPLANARITY 0.10 1.10 MAX 8 0 0.80 0.40
0.23 0.08 SEATING PLANE
COMPLIANT TO JEDEC STANDARDS MO-187AA
8-Lead Small Outline Transistor Package [SOT-23] (RJ-8)
Dimensions shown in millimeters
2.90 BSC
8
7
6
5
1.60 BSC
1 2 3 4
2.80 BSC
PIN 1 0.65 BSC 1.30 1.15 0.90 1.95 BSC
1.45 MAX 0.38 0.22
0.22 0.08 8 4 0
0.15 MAX
SEATING PLANE
0.60 0.45 0.30
COMPLIANT TO JEDEC STANDARDS MO-178BA
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C03297-0-5/03(0)

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