Low Voltage 1.65 V to 3.6 V, Bidirectional
Logic Level Translation, Bypass Switch
Data Sheet
ADG3233
FEATURES
FUNCTIONAL BLOCK DIAGRAM
V
V
CC2
CC1
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
V
CC1
A1
Y1
Short circuit protection
V
V
V
V
CC2
CC1
CC1
CC2
APPLICATIONS
0
1
Y2
JTAG chain bypassing
Daisy-chain bypassing
Digital switching
A2
EN
ADG3233
GND
Figure 1.
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
The ADG32331 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, that is, it translates low voltages to higher voltages
and vice versa. The signal path is unidirectional, meaning data
may only flow from A → 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 and 8-lead MSOP.
Table 1. Truth Table
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.
EN
Signal Path
Function
L
Enable bypass mode
Enable normal mode
A1 → Y2, Y1 → VCC1
A1 → Y1, A2 → Y2
H
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 2.9 mm × 2.8 mm board space, while the MSOP
package occupies approximately 3 mm × 4.9 mm board area.
1 U.S. Patent Number: 7,369,385 B2.
Rev. B
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