ADG3233BRM-REEL [ADI]
Low Voltage 1.65 V to 3.6 V, Bidirectional Logic Level Translation, Bypass Switch; 低电压1.65 V至3.6 V ，双向逻辑电平转换，旁路开关
| 型号： | ADG3233BRM-REEL |
| 厂家： | 
ADI |
| 描述： | Low Voltage 1.65 V to 3.6 V, Bidirectional Logic Level Translation, Bypass Switch |
| 文件： | 总12页 (文件大小：264K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Low Voltage 1.65 V to 3.6 V, Bidirectional
Logic Level Translation, Bypass Switch
ADG3233*
FEATURES
FUNCTIONAL BLOCK DIAGRAM
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
V
V
CC2
CC1
V
CC1
A1
Y1
Y2
V
V
V
V
CC2
APPLICATIONS
CC1
CC1
CC2
JTAG Chain Bypassing
Daisy-Chain Bypassing
Digital Switching
0
1
A2
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.
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 ϫ 8.26 mm board area,
or 8-lead MSOP.
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.
Table I. Truth Table
EN
Signal Path
Function
L
H
A1→Y2, Y1→VCC1
A1→Y1, A2→Y2
Enable Bypass Mode
Enable Normal Mode
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 ϫ 8.26 mm board space, while the MSOP
package occupies approximately 15 mm ϫ 15 mm board area.
*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, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat
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
Fax: 781/326-8703
www.analog.com
© 2003 Analog Devices, Inc. All rights reserved.
(VCC1 = VCC2 = 1.65 V to 3.6 V, GND = 0 V, All specifications TMIN to TMAX, unless
otherwise noted.)
ADG3233–SPECIFICATIONS1
Parameter
Symbol
Conditions
Min
Typ2
Max
Unit
LOGIC INPUTS/OUTPUTS3
(VCC2 = 1.65 V to 3.6 V, GND = 0 V)
VCC1 = 3.0 V to 3.6 V
Input High Voltage4
VIH
1.35
1.35
0.65 VCC
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
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
Input Low Voltage4
VIL
0.8
0.7
0.35 VCC
VCC1 = 2.3 V to 2.7 V
VCC1 = 1.65 V to 1.95 V
IOH = –100 µA, VCC1 = 3.0 V to 3.6 V
VCC1 = 2.3 V to 2.7 V
Output High Voltage (Y1)
VOH
2.4
2.0
VCC1 = 1.65 V to 1.95 V VCC – 0.45
VCC1 = 2.3 V to 2.7 V 2.0
VCC1 = 1.65 V to 1.95 V VCC – 0.45
IOH = –4 mA,
IOH = –8 mA,
VCC1 = 3.0 V to 3.6 V
2.4
Output Low Voltage (Y1)
VOL
IOL = +100 µA, VCC1 = 3.0 V to 3.6 V
0.40
0.40
0.45
0.40
0.45
0.40
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
LOGIC OUTPUTS3
Output High Voltage (Y2)
(VCC1 = 1.65 V to 3.6 V, GND = 0 V)
IOH = –100 µA, VCC2 = 3.0 V to 3.6 V
VCC2 = 2.3 V to 2.7 V
VOH
2.4
2.0
V
V
V
V
V
V
V
V
V
V
V
V
VCC2 = 1.65 V to 1.95 V VCC – 0.45
VCC2 = 2.3 V to 2.7 V 2.0
VCC2 = 1.65 V to 1.95 V VCC – 0.45
VCC2 = 3.0 V to 3.6 V 2.4
IOH = –4 mA,
IOH = –8 mA,
IOL = +100 µA, VCC2 = 3.0 V to 3.6 V
Output Low Voltage (Y2)
VOL
0.40
0.40
0.45
0.40
0.45
0.40
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
SWITCHING CHARACTERISTICS4, 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
tPHL, tPLH
tPHL, tPLH
tPHL, tPLH
tEN
tDIS
tEN
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
5.4
5.4
6.5
6
4
6.5
6.5
ns
ns
ns
ns
ns
ns
ns
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
4
2.8
4.5
4
tDIS
A1 to Y1 Normal Mode
A2 to Y2 Normal Mode
A1 to Y2 Bypass Mode
tPHL, tPLH
tPHL, tPLH
tPHL, tPLH
tEN
tDIS
tEN
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
6.2
6.2
6.5
7.2
4.7
7.7
7.2
ns
ns
ns
ns
ns
ns
ns
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
tDIS
4.8
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
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
10
10
10.25
10.5
6.5
ns
ns
ns
ns
ns
ns
ns
12
10.5
tDIS
6.5
–2–
REV. 0
ADG3233
Parameter
Symbol
Conditions
Min
Typ2
Max
Unit
SWITCHING CHARACTERISTICS4, 5 (continued)
Input Leakage Current
Output Leakage Current
II
IO
0 Յ VIN Յ 3.6 V
0 Յ VIN Յ 3.6 V
1
1
µA
µA
POWER REQUIREMENTS
Power Supply Voltages
VCC1
VCC2
ICC1
ICC2
∆ICC1
1.65
1.65
3.6
3.6
2
V
V
µA
µA
Quiescent Power Supply Current
Increase in ICC per Input
Digital Inputs = 0 V or VCC
Digital Inputs = 0 V or VCC
VCC = 3.6 V, One Input at 3.0 V;
Others at VCC or GND
2
0.75
µA
NOTES
1 Temperature range is as follows: B Version: –40°C to +85°C.
2 All typical values are at VCC = VCC1 = VCC2, TA = 25°C, unless otherwise stated.
3 VIL and VIH levels are specified with respect to VCC1, 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.
REV. 0
–3–
ADG3233
ABSOLUTE MAXIMUM RATINGS*
(TA = 25°C, unless otherwise noted.)
Lead Temperature, Soldering (10 sec) . . . . . . . . . . . . . 300°C
IR Reflow, Peak Temperature (<20 sec) . . . . . . . . . . . . 235°C
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
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent 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 condi-
tionsforextendedperiodsmayaffectdevicereliability. Onlyoneabsolutemaximum
rating may be applied at any one time.
Industrial (B Version) . . . . . . . . . . . . . . . . . –40°C to +85°C
Storage Temperature Range . . . . . . . . . . . . . –65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
8-Lead MSOP
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 206°C/W
JC Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 43°C/W
8-Lead SOT-23
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 211°C/W
ORDERING GUIDE
Model
Temperature Range
Package Description
Branding
Package Option
ADG3233BRJ-REEL
ADG3233BRJ-REEL7
ADG3233BRM
ADG3233BRM-REEL
ADG3233BRM-REEL7 –40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
SOT-23
SOT-23
MSOP
MSOP
MSOP
W1B
W1B
W1B
W1B
W1B
RJ-8
RJ-8
RM-8
RM-8
RM-8
PIN CONFIGURATIONS
8-Lead SOT-23 Package (RJ-8)
8-Lead MSOP Package (RM-8)
V
1
2
3
4
8
7
6
5
V
V
1
2
3
4
8
7
6
5
V
CC1
CC1
A1
CC2
CC2
Y1
Y1
A1
A2
EN
ADG3233
ADG3233
A2
Y2
Y2
TOP VIEW
TOP VIEW
(Not to Scale)
(Not to Scale)
EN
GND
GND
PIN FUNCTION DESCRIPTIONS
Pin
RJ-8 RM-8 Mnemonic Description
1
8
2
3
7
6
8
1
7
6
2
3
VCC1
VCC2
A1
A2
Y1
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.
Y2
Output Referred to VCC2. Voltage levels appearing at Y2 will be translated from VCC1 voltage level to a
VCC2 voltage level.
4
5
5
4
EN
GND
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.
–4–
REV. 0
Typical Performance Characteristics–ADG3233
5.0
4.5
4.0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
30
T
= 25؇C
A
T = 25؇C
A
V
= 3.3V
CC2
= 25؇C
T
A
25
3.5
V
V
= 3.3V
= 2.5V
20
15
CC1
3.0
2.5
2.0
1.5
CC1
V
= 1.8V
CC1
10
5
V
= 2.5V
V
= 3.3V
V
= 3.3V
V = 2.5V
CC1
CC2
2.0
CC2
CC1
1.0
0.5
0
V
= 1.8V
CC2
V
= 1.8V
CC1
0
0
10 20 30
40
50 60
70 80
1.5
2.5
3.0
3.5
4.0
1.5
2.0
2.5
3.0
– V
3.5
4.0
V
CC2
V
– V
TEMPERATURE – ЊC
CC1
TPC 1. ICC1 vs. VCC1
TPC 2. ICC2 vs. VCC2
TPC 3. ICC1 vs. Temperature
30
25
2000
1800
1600
80
70
60
50
40
30
20
V
= 3.3V
= 25؇C
T
=
25؇C
T
= 25؇C
CC1
A
A
T
A
V
=
V
= 3.3V
CC2
CC1
20
15
10
5
1400
1200
V
= 3.3V
CC2
V
=
V
= 3.3V
CC2
CC1
V
= 2.5V
CC2
1000
800
600
400
V
= 1.8V
CC2
V
=
V
= 1.8V
CC2
CC1
V
=
V
= 1.8V
1M
CC1
CC2
0
10
0
200
0
–5
10k
100k
1M
10M
100M
10k
100k
10M
100M
0
10
20 30 40 50
60 70 80
FREQUENCY – Hz
FREQUENCY – Hz
TEMPERATURE – ЊC
TPC 4. ICC2 vs. Temperature
TPC 5. ICC1 vs. Frequency,
Normal Mode
TPC 6. ICC1 vs. Frequency,
Bypass Mode
2000
1800
1600
2000
1800
1600
10
T
= 25؇C
T
=
25؇C
A
A
8
6
4
2
0
V
=
V
= 3.3V
CC2
CC1
1400
1200
1400
1200
V
=
V
= 3.3V
CC2
CC1
tEN
1000
1000
tDIS
800
600
400
800
600
400
V
=
V
= 1.8V
V
=
V
= 1.8V
CC2
CC1
CC2
CC1
T
V
= 25؇C
A
200
0
200
0
= V
CC1
CC2
10k
100k
1M
10M
100M
10k
100k
1M
10M
100M
1.5
2.0
2.5
3.0
3.5
4.0
FREQUENCY – Hz
FREQUENCY – Hz
SUPPLY – V
TPC 8. ICC2 vs. Frequency,
Bypass Mode
TPC 9. Y1 Enable, Disable Time
vs. Supply
TPC 7. ICC2 vs. Frequency,
Normal Mode
REV. 0
–5–
ADG3233
10
6
5
4
3
2
1
0
6
5
4
3
2
1
0
8
6
4
2
tEN
tEN
tDIS
tEN
tDIS
tDIS
T
V
= 25؇C
A
V
= V
3.3V
V
= V
3.3V
CC2 =
= V
CC1
CC2 =
CC1
CC1
CC2
0
1.5
2.0
2.5
3.0
3.5
4.0
–40
–20
0
20
40
60
80
–40
–20
0
20
40
60
80
SUPPLY – V
TEMPERATURE – ؇C
TEMPERATURE – ؇C
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
16
10
V
V
= 3.3V
= 1.8V
= 25؇C
CC1
CC2
V
V
T
= 1.8V
= 3.3V
= 25؇C
V
V
T
= 3.3V
= 1.8V
= 25؇C
CC1
CC2
A
CC1
CC2
A
14
12
9
8
14
12
T
A
DATA RATE 10Mbps
DATA RATE 10Mbps
tPLH, LOW-TO-HIGH TRANSITION
DATA RATE 10Mbps
7
6
5
10
8
10
8
tPLH, LOW-TO-HIGH TRANSITION
tPLH, LOW-TO-HIGH TRANSITION
4
6
4
6
4
3
2
tPHL, HIGH-TO-LOW TRANSITION
tPHL, HIGH-TO-LOW TRANSITION
tPHL, HIGH-TO-LOW TRANSITION
2
0
2
0
1
0
22 32 42 52 62 72 82 92 102
CAPACITIVE LOAD – pF
22 32
42 52
62 72
82 92 102
22 32 42 52
62 72 82 92 102
CAPACITIVE LOAD – pF
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
8
8
7
10
V
V
T
= 3.3V
= 3.3V
= 25؇C
V
V
T
= 1.8V
= 3.3V
= 25؇C
CC1
CC2
A
CC1
CC2
A
9
8
7
6
5
4
3
tPLH, LOW-TO-HIGH TRANSITION
6
DATA RATE 10Mbps
DATA RATE 10Mbps
tLH, LOW-TO-HIGH TRANSITION
tPLH, LOW-TO-HIGH TRANSITION
7
6
5
5
4
tPHL, HIGH-TO-LOW TRANSITION
tPHL, HIGH-TO-LOW TRANSITION
4
3
2
3
2
2
V
V
T
= 3.3V
= 3.3V
= 25؇C
tHL, HIGH-TO-LOW TRANSITION
CC1
CC2
A
1
0
1
0
1
0
DATA RATE 10Mbps
22 32 42 52
62 72 82 92 102
22 32 42 52 62 72 82 92 102
22 32 42 52
62 72 82 92 102
CAPACITIVE LOAD – pF
CAPACITIVE LOAD – pF
CAPACITIVE LOAD – pF
TPC 17. Propagation Delay
vs. Capacitive Load A1 to Y1
TPC 18. Propagation Delay
vs. Capacitive Load A2 to Y2
TPC 16. Rise/Fall Time vs. Capacitive
Load, A1–Y2, Bypass Mode
–6–
REV. 0
ADG3233
8.0
6.0
4.0
2.0
0
8
7
6
5
4
3
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
tPLH, LOW-TO-HIGH TRANSITION
tPLH, A1–Y1
tPHL, A2–Y2
tPHL, A1–Y2
tPHL, HIGH-TO-LOW TRANSITION
tPLH , A1–Y2
tPHL, A1–Y1
2
V
V
= 3.3V
= 3.3V
= 25؇C
CC1
CC2
tPLH, A2–Y2
T
V
= 25؇C
1
0
T
V
= 25؇C
A
A
T
A
= V
= V
CC1
CC2
CC1
CC2
DATA RATE 10Mbps
22 32 42 52
62 72 82 92 102
1.5
2.0
2.5
3.0
3.5
4.0
1.5
2.0
2.5
3.0
3.5
4.0
CAPACITIVE LOAD – pF
SUPPLY – V
SUPPLY – V
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
4.0
tPHL, A2–Y2
T
= 25؇C
A
tPHL, A1–Y1
tPHL, A1–Y2
EN = HIGH
3.5
A1
A2
Y1
Y2
3.3V
3.0
3.0
1.8V
tPLH, A1–Y2
2.5
tPLH, A1–Y1
2.0
2.0
1.0
0
tPLH, A2–Y2
1.5
3.3V
1.0
2
4
DATA RATE = 10MHz
0.5
0
T
V
= 25؇C
T
V
A
A
= V
= 3.3V
= 3.3V
CC1
CC2
–40
–20
0
20
40
60
80
–40
0
20
40
60
80
TEMPERATURE – ؇C
TEMPERATURE – ؇C
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
T
= 25؇C
A
A1
3.3V
1.8V
DATA RATE = 10MHz
3.3V
1.8V
A1
Y2
1.8V
3.3V
A1
Y1
2
Y2
3.3V
1.8V
A2
1.8V
Y1
4
2
1
Y2
T
= 25؇C
A
T
= 25؇C
A
DATA RATE = 10MHz
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
REV. 0
–7–
ADG3233
3.5
3
T
V
= 25؇C
A
V
= V
CC = CC1 CC2
V
= 3.3V
CC
2.5
2
SOURCE
V
= 2.5V
CC
1.5
1
V
= 1.8V
CC
V
= 3.3V
CC
V
= 2.5V
CC
V
= 1.8V
CC
0.5
0
SINK
0
5
10
CURRENT – mA
15
20
TPC 28. Y1 and Y2 Source and Sink Current
V
V
CC1
CC1
INPUT
V
T
V
T
EN
0V
V
0V
tPHL
tPLH
tEN
tDIS
OH
OUTPUT
V
V
V
CC1
T
A1
A2
OL
0V
Figure 1. Propagation Delay
V
CC1
0V
V
OH
V
Y2
V
T
T
V
CC1
V
OL
V
T
EN
0V
Figure 3. Y2 Enable and Disable Times
tEN
tDIS
V
OH
Y1 (A1 @ GND)
V
V
V
T
T
OL
Figure 2. Y1 Enable and Disable Times
–8–
REV. 0
ADG3233
DESCRIPTION
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.
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.
Normal Operation
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.
A1 and EN Input
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
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.
V
V
V
CC0
CC1
CC2
DEVICE 0
DEVICE 1
DEVICE 2
SIGNAL INPUT
SIGNAL OUTPUT
V
V
CC2
CC1
A1
A2
Y1
Y2
LOGIC 1
EN
BYPASS SWITCH
Figure 4. Bypass Switch in Normal Mode
REV. 0
–9–
ADG3233
V
V
V
CC2
CC0
CC1
DEVICE 0
DEVICE 1
DEVICE 2
SIGNAL INPUT
SIGNAL OUTPUT
V
V
CC2
CC1
A1
A2
Y1
Y2
LOGIC 0
EN
BYPASS SWITCH
Figure 5. Bypass Switch in Bypass Mode
Bypass Operation
directly to the input of Device 2. In bypass mode, Y1 is pulled
up to VCC1
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
.
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.
–10–
REV. 0
ADG3233
OUTLINE DIMENSIONS
8-Lead Mini Small Outline Package [MSOP]
(RM-8)
Dimensions shown in millimeters
3.00
BSC
8
5
4
4.90
BSC
3.00
BSC
1
PIN 1
0.65 BSC
1.10 MAX
0.15
0.00
0.80
0.40
8؇
0؇
0.38
0.22
0.23
0.08
SEATING
PLANE
COPLANARITY
0.10
COMPLIANT TO JEDEC STANDARDS MO-187AA
8-Lead Small Outline Transistor Package [SOT-23]
(RJ-8)
Dimensions shown in millimeters
2.90 BSC
8
1
7
2
6
3
5
4
1.60 BSC
PIN 1
2.80 BSC
0.65 BSC
1.95
BSC
1.30
1.15
0.90
1.45 MAX
0.22
0.08
0.60
0.45
0.30
8؇
4؇
0؇
0.38
0.22
0.15 MAX
SEATING
PLANE
COMPLIANT TO JEDEC STANDARDS MO-178BA
REV. 0
–11–
–12–
相关型号：
ADG3233BRM-REEL7
Low Voltage 1.65 V to 3.6 V, Bidirectional Logic Level Translation, Bypass Switch
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