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ADG3243BRJ-R2
2.5 V/3.3 V, 2-Bit, Individual Control Level Translator Bus Switch
REV. 0
2.5 V/3.3 V, 2-Bit, Individual Control
Level Translator Bus Switch
FEATURES
225 ps Propagation Delay through the Switch
4.5 � Switch Connection between Ports
Data Rate 1.5 Gbps
2.5 V/3.3 V Supply Operation
Level Translation
3.3 V to 2.5 V
2.5 V to 1.8 V
Small Signal Bandwidth 710 MHz
8-Lead SOT-23 Package
APPLICATIONS
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
FUNCTIONAL BLOCK DIAGRAM
GENERAL DESCRIPTIONThe ADG3243 is a 2.5 V or 3.3 V, 2-bit, 2-port digital switch
with individual channel control. It is designed on a low voltage
CMOS process, which provides low power dissipation yet gives
high switching speed and very low on resistance. This allows the
inputs to be connected to the outputs without additional propa-
gation delay or generating additional ground bounce noise.
The switches are enabled by means of the bus enable (BEx) 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.
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 will translate the outputs to 1.8 V. This makes the device
suited to applications requiring level translation between different
supplies, such as converter to DSP/microcontroller interfacing.
PRODUCT HIGHLIGHTS3.3 V or 2.5 V supply operation.Extremely low propagation delay through switch.4.5 Ω switches connect inputs to outputs.Level/voltage translation.Tiny SOT-23 package.
ADG3243–SPECIFICATIONS1CAPACITANCE
NOTESTemperature range is as follows: B Version: –40°C to +85°C.Typical values are at 25°C, unless otherwise stated.Guaranteed by design, not subject to production test.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.Propagation delay matching between channels is calculated from the on resistance matching and load capacitance of 50 pF.See Timing Measurement Information section.This current applies to the control pin BEx only. The A and B ports contribute no significant ac or dc currents as they transition.
Specifications subject to change without notice.
(VCC = 2.3 V to 3.6 V, GND = 0 V, all specifications TMIN to TMAX,
unless otherwise noted.)
ABSOLUTE MAXIMUM RATINGS*(TA = 25°C, unless otherwise noted.)
VCC to GND . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to +4.6 V
Digital Inputs to GND . . . . . . . . . . . . . . . . . –0.5 V to +4.6 V
DC Input Voltage . . . . . . . . . . . . . . . . . . . . . –0.5 V to +4.6 V
DC Output Current . . . . . . . . . . . . . . . . . 25 mA per Channel
Operating Temperature Range
Industrial (B Version) . . . . . . . . . . . . . . . . –40°C to +85°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
�JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . .206°C/Ω
Lead Temperature, Soldering (10 sec) . . . . . . . . . . . . .300°C
IR Reflow, Peak Temperature (<20 sec) . . . . . . . . . . . .235°C
*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
conditions for extended periods may affect device reliability. Only one absolute
maximum rating may be applied at any one time.
PIN CONFIGURATION
8-Lead SOT-23
CAUTIONESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000V readily
accumulate on the human body and test equipment and can discharge without detection. Although the
ADG3243 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.
ORDERING GUIDE
PIN FUNCTION DESCRIPTIONS
Table I. Truth Table
ADG3243
TERMINOLOGYGND
VINH
VINL
IOZ
IOL
RON
�RON
CIN
ICC
�ICC
tPLH, tPHL
Max Data Rate
TPC 1.On Resistance vs.
Input Voltage
TPC 4.On Resistance vs. Input
Voltage for Different Temperatures
ENABLE FREQUENCY (MHz)
450TPC 7.ICC vs. Enable Frequency
TPC 2.On Resistance vs.
Input Voltage
TPC 5.Pass Voltage vs. VCC
TPC 8.Output Low Characteristic
TPC 3.On Resistance vs. Input
Voltage for Different Temperatures
TPC 6.Pass Voltage vs. VCC
TPC 9.Output High Characteristic
ADG3243TPC 10.Charge Injection vs.
Source Voltage
TPC 13.Off Isolation vs. Frequency
TPC 16.Eye Width vs. Data Rate;
PRBS 31
TPC 11.Bandwidth vs. Frequency
TPC 14.Enable/Disable Time
vs. Temperature
TPC 17.Eye Pattern; 1.5 Gbps,
VCC = 3.3 V, PRBS 31
FREQUENCY (MHz)
ATTENUATION (dB)1000100
–100TPC 12.Crosstalk vs. Frequency
TPC 15.Jitter vs. Data Rate;
PRBS 31
TPC 18.Eye Pattern; 1.244 Gbps,
VCC = 2.5 V, PRBS 31
