2.5 V/3.3 V, 1-Bit, 2-Port
Level Translator Bus Switch in SOT-66
ADG3241
FUNCTIONAL BLOCK DIAGRAM
FEATURES
225 ps propagation delay through the switch
4.5 Ω switch connection between ports
Data rate 1.5 Gbps
2.5 V/3.3 V supply operation
Selectable level shifting/translation
Level translation
3.3 V to 2.5 V
3.3 V to 1.8 V
2.5 V to 1.8 V
Small signal bandwidth 770 MHz
Tiny 6-lead SC70 package and 6-lead SOT-66 package
B
04221-001
A
BE
Figure 1.
APPLICATIONS
3.3 V to 1.8 V voltage translation
3.3 V to 2.5 V voltage translation
2.5 V to 1.8 V voltage translation
Bus switching
Bus isolation
Hot swap
Hot plug
Analog switch applications
GENERAL DESCRIPTION
The ADG3241 is a 2.5 V or 3.3 V single digital switch. It is
designed on a low voltage CMOS process that provides low
power dissipation yet gives high switching speed and very low
on resistance. This allows the input to be connected to the
output without additional propagation delay or generating
additional ground bounce noise.
translating select pin (SEL) is included. When SEL is low, VCC is
reduced internally, allowing for level translation between 3.3 V
inputs and 1.8 V outputs. This makes the device suited to
applications requiring level translation between different
supplies, such as converter to DSP/microcontroller interfacing.
The switch is enabled by means of the bus enable (BE) input
signal. This digital switch allows a bidirectional signal to be
switched when on. In the off condition, signal levels up to the
supplies are blocked.
1.
3.3 V or 2.5 V supply operation.
2.
Extremely low propagation delay through switch.
3.
4.5 Ω switches connect inputs to outputs.
This device is ideal for applications requiring level translation.
When operated from a 3.3 V supply, level translation from 3.3 V
inputs to 2.5 V outputs is allowed. Similarly, if the device is
operated from a 2.5 V supply and 2.5 V inputs are applied, the
device translates the outputs to 1.8 V. In addition to this, a level
4.
Level and voltage translation.
5.
Tiny, SC70 package and SOT-66 package.
PRODUCT HIGHLIGHTS
Rev. B
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ADG3241* Product Page Quick Links
Last Content Update: 11/01/2016
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Documentation
Data Sheet
• ADG3241: 2.5 V/3.3 V, 1-Bit, 2-Port Level Translator Bus
Switch in SOT-66 Data Sheet
Reference Materials
Product Selection Guide
• Switches and Multiplexers Product Selection Guide
Technical Articles
• CMOS Switches Offer High Performance in Low Power,
Wideband Applications
• Data-acquisition system uses fault protection
• Enhanced Multiplexing for MEMS Optical Cross Connects
ADG3241 Material Declaration
PCN-PDN Information
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ADG3241
TABLE OF CONTENTS
Features .............................................................................................. 1
Timing Measurement Information .............................................. 11
Applications....................................................................................... 1
Bus Switch Applications ................................................................ 12
Functional Block Diagram .............................................................. 1
Mixed Voltage Operation, Level Translation.......................... 12
General Description ......................................................................... 1
3.3 V to 2.5 V Translation ......................................................... 12
Product Highlights ........................................................................... 1
2.5 V to 1.8 V Translation ......................................................... 12
Revision History ............................................................................... 2
3.3 V to 1.8 V Translation ......................................................... 12
Specifications..................................................................................... 3
Bus Isolation................................................................................ 13
Absolute Maximum Ratings............................................................ 4
Hot Plug and Hot Swap Isolation............................................. 13
ESD Caution.................................................................................. 4
Analog Switching ....................................................................... 13
Pin Configuration and Function Descriptions............................. 5
High Impedance During Power-Up/Power-Down................ 13
Typical Performance Characteristics ............................................. 6
Outline Dimensions ....................................................................... 14
Terminology .................................................................................... 10
Ordering Guide .......................................................................... 14
REVISION HISTORY
5/06 — Rev. A to Rev. B
Updated Format..................................................................Universal
Changes to Table 4............................................................................ 5
Changes to Ordering Guide ......................................................... 14
Changes to Absolute Maximum Ratings........................................3
Changes to Pin Configurations .......................................................4
Changes to Ordering Guide .............................................................4
Updated Outline Dimensions....................................................... 11
10/04 — Rev. 0 to Rev. A.
Changes to Features.......................................................................... 1
Changes to Specifications ................................................................ 2
7/03—Revision 0: Initial Version
Rev. B | Page 2 of 16
ADG3241
SPECIFICATIONS
VCC = 2.3 V to 3.6 V, GND = 0 V, all specifications TMIN to TMAX, unless otherwise noted. 1
Table 1.
Parameter
DC ELECTRICAL CHARACTERISTICS
Input High Voltage
Input Low Voltage
Input Leakage Current
Off State Leakage Current
On State Leakage Current
Maximum Pass Voltage
Symbol
Conditions
Min
VINH
VINH
VINL
VINL
II
IOZ
VCC = 2.7 V to 3.6 V
VCC = 2.3 V to 2.7 V
VCC = 2.7 V to 3.6 V
VCC = 2.3 V to 2.7 V
2.0
1.7
VP
0 ≤ A, B ≤ VCC
0 ≤ A, B ≤ VCC
VA/VB = VCC = SEL = 3.3 V, IO = −5 μA
VA/VB = VCC = SEL = 2.5 V, IO = −5 μA
VA/VB = VCC = 3.3 V, SEL = 0 V, IO = −5 μA
CA OFF
CB OFF
CA, CB ON
CIN
f = 1 MHz
f = 1 MHz
f = 1 MHz
f = 1 MHz
tPHL, tPLH
tPZH, tPZL
tPHZ, tPLZ
tPZH, tPZL
tPHZ, tPLZ
tPZH, tPZL
tPHZ, tPLZ
CL = 50 pF, VCC = SEL = 3 V
VCC = 3.0 V to 3.6 V; SEL = VCC
VCC = 3.0 V to 3.6 V; SEL = VCC
VCC = 3.0 V to 3.6 V; SEL = 0 V
VCC = 3.0 V to 3.6 V; SEL = 0 V
VCC = 2.3 V to 2.7 V; SEL = VCC
VCC = 2.3 V to 2.7 V; SEL = VCC
VCC = SEL = 3.3 V; VA/VB = 2 V
VCC = SEL = 3.3 V; VA/VB = 2 V
DIGITAL SWITCH
On Resistance
RON
VCC = 3 V, SEL = VCC, VA = 0 V, IBA = 8 mA
VCC = 3 V, SEL = VCC, VA = 1.7 V, IBA = 8 mA
VCC = 2.3 V, SEL = VCC, VA = 0 V, IBA = 8 mA
VCC = 2.3 V, SEL = VCC, VA = 1 V, IBA = 8 mA
VCC = 3 V, SEL = 0 V, VA = 0 V, IBA = 8 mA
VCC = 3 V, SEL = 0 V, VA = 1 V, IBA = 8 mA
POWER REQUIREMENTS
VCC
Quiescent Power Supply Current
ICC
Digital Inputs = 0 V or VCC; SEL = VCC
Digital Inputs = 0 V or VCC; SEL = 0 V
VCC = 3.6 V, BE = 3.0 V; SEL = VCC
CAPACITANCE 3
A Port Off Capacitance
B Port Off Capacitance
A, B Port On Capacitance
Control Input Capacitance
SWITCHING CHARACTERISTICS3
Propagation Delay A to B or B to A, tPD 4
Bus Enable Time BE to A or B 5
Bus Disable Time BE to A or B5
Bus Enable Time BE to A or B5
Bus Disable Time BE to A or B5
Bus Enable Time BE to A or B5
Bus Disable Time BE to A or B5
Maximum Data Rate
Channel Jitter
Increase in ICC per Input 6
2.2
1.5
1.5
B Version
Typ 2
Max
±0.01
±0.01
±0.01
2.5
1.8
1.8
3.5
3.5
7
4
1
1
1
1
1
1
3.2
3
3
2.5
3
2.5
1.5
45
4.5
12
5
9
5
12
2.3
∆ICC
1
0.8
0.7
±1
±1
±1
2.7
2.1
2.1
0.01
0.1
0.15
Unit
V
V
V
V
μA
μA
μA
V
V
V
pF
pF
pF
pF
0.225
4.6
4
4
3.8
4
3.4
ns
ns
ns
ns
ns
ns
ns
Gbps
ps p-p
8
28
9
18
8
Ω
Ω
Ω
Ω
Ω
Ω
3.6
1
0.2
8
V
μA
mA
μA
Temperature range is as follows: B Version: −40°C to +85°C.
Typical values are at 25°C, unless otherwise stated.
3
Guaranteed by design, not subject to production test.
4
The digital switch contributes no propagation delay other than the RC delay of the typical RON of the switch and the load capacitance when driven by an ideal voltage
source. Since the time constant is much smaller than the rise/fall times of typical driving signals, it adds very little propagation delay to the system. Propagation delay
of the digital switch, when used in a system, is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side.
5
See Timing Measurement Information section.
6
This current applies to the Control Pin BE only. The A and B ports contribute no significant ac or dc currents as they transition.
2
Rev. B | Page 3 of 16
ADG3241
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
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.
Table 2.
Parameter
VCC to GND
Digital Inputs to GND
DC Input Voltage
DC Output Current
Operating Temperature Range
Industrial (B Version)
Storage Temperature Range
Junction Temperature
SC70 Package
θJA Thermal Impedance
SOT-66 Package
θJA Thermal Impedance
Lead Temperature, Soldering (10 sec)
IR Reflow, Peak Temperature
(
