Preliminary Technical Data
PRELIMINARY TECHNICAL DATA
REV. PrC
ADG3246
2.5 V/3.3 V, 10-Bit, 2-Port
Level Translating, Bus Switch
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FEATURES
225 ps Propagation Delay through the Switch
4.5 H9024 Switch Connection between Ports
Data Rate 1.244 Gbps
2.5 V/3.3 V Supply Operation
Selectable Level Shifting/Translation
Small Signal Bandwidth 610 MHz
Level Translation
3.3 V to 2.5 V
3.3 V to 1.8 V
2.5 V to 1.8 V
24-Lead TSSOP and LFCSP Packages
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 Signal Switching
FUNCTIONAL BLOCK DIAGRAM
A9 B9
A0 B0
BE
GENERAL DESCRIPTION
The ADG3246 is a 2.5 V or 3.3 V, 10-bit, 2-port digital switch.
It is designed on Analog Devices’ low voltage CMOS process,
which provides low power dissipation yet gives high switching
speed and very low on resistance, allowing inputs to be connected
to outputs without additional propagation delay or generating
additional ground bounce noise.
The switches are enabled by means of the Bus Enable (BE)
input signal. These digital switches allow bidirectional signals 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 occurs. 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. In addition to this, the ADG3246
has a level translating select pin (SEL) . When SEL is low, V
CC
is
reduced internally, allowing for level translation between 3.3 V
inputs and 1.8 V outputs. This makes the device suited to appli-
cations requiring level translation between different supplies, such
as converter to DSP/microcontroller interfacing.
PRODUCT HIGHLIGHTS
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. Level/voltage translation
5. 24-lead 4 mm × 4 mm LFCSP and 24-lead TSSOP packages