Low Voltage 1.65 V to 3.6 V, Bidirectional
Logic Level Translation, Bypass Switch
ADG3233*
FEATURES
FUNCTIONAL BLOCK DIAGRAM
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
V
V
CC2
CC1
V
CC1
A1
Y1
Y2
V
V
V
V
CC2
APPLICATIONS
CC1
CC1
CC2
JTAG Chain Bypassing
Daisy-Chain Bypassing
Digital Switching
0
1
A2
EN
GND
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
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.
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 ϫ 8.26 mm board area,
or 8-lead MSOP.
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.
Table I. Truth Table
EN
Signal Path
Function
L
H
A1→Y2, Y1→VCC1
A1→Y1, A2→Y2
Enable Bypass Mode
Enable Normal Mode
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 ϫ 8.26 mm board space, while the MSOP
package occupies approximately 15 mm ϫ 15 mm board area.
*Patent Pending
REV. 0
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