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ADG3233
*
Low Voltage 1.65 V to 3.6 V, Bidirectional
Logic Level Translation, Bypass Switch
PRODUCT HIGHLIGHTS
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 H11003 8.26 mm board area,
or 8-lead MSOP.
Table I. Truth Table
EN Signal Path Function
LA1→Y2, Y1→V
CC1
Enable Bypass Mode
HA→Y1, A2→Y2 Enable Normal Mode
*Patent Pending
FUNCTIONAL BLOCK DIAGRAM
EN
A1
A2
V
CC1
GND
Y2
Y1
0
1
V
CC1
V
CC1
V
CC2
V
CC1
V
CC2
V
CC2
FEATURES
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
APPLICATIONS
JTAG Chain Bypassing
Daisy-Chain Bypassing
Digital Switching
GENERAL DESCRIPTION
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.
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.
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 H11003 8.26 mm board space, while the MSOP
package occupies approximately 15 mm H11003 15 mm board area.