2.5 V/3.3 V, 2-Bit Common Control
Level Translator Bus Switch
ADG3242
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 710 MHz
8-lead SOT-23 package
B0
A1
B1
04309-001
A0
BE
Figure 1.
APPLICATIONS
3.3 V to 2.5 V voltage translation
3.3 V to 1.8 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 ADG3242 is a 2.5 V or 3.3 V, 2-bit, 2-port, common control
digital switch. It is designed on a low voltage CMOS process, and
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 propagation delay or generating
additional ground bounce noise.
internally, allowing for level translation between 3.3 V inputs
and 1.8 V outputs. This makes the device suitable for applications
requiring level translation between different supplies, such as
converter to DSP/microcontroller interfacing.
PRODUCT HIGHLIGHTS
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, a level translating
select pin (SEL) is included. When SEL is low, VCC is reduced
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.
4.
These switches are enabled by means of a common 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.
Level/voltage translation.
5.
Tiny SOT-23 package.
Rev. A
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