June 2009 Doc ID 14907 Rev 2 1/21
21
ST2329A
2-bit dual supply level translator
without direction control pin
Features
■ 18 Mbps (max) data rate when driven by a
totem pole driver
■ 6.8 Mbps (max) data rate when driven by an
open drain pole driver
■ Bidirectional level translation without
direction control pin
■ Wide V
L
voltage range of 1.65 to 3.6 V
■ Wide V
CC
voltage range of 1.80 to 5.5 V
■ Power down mode feature – when either
supply is off, all I/Os are in high impedance
■ Low quiescent current (max 4 µA)
■ Able to be driven by totem pole and open drain
drivers
■ 5.5 V tolerant enable pin
■ ESD performance on all pins: ±2 kV HBM
■ Small package and footprint:
QFN10L (1.8 x 1.4 mm) package
Applications
■ Low voltage system level translation
■ Mobile phones and other mobile devices
■ I
2
C level translation
■ UART level translation
Description
The ST2329A is a 2-bit dual supply level
translator which provides the level shifting
capability to allow data transfer in a multi-voltage
system. Externally applied voltages, V
CC
and V
L
,
set the logic levels on either side of the device. It
utilizes transmission gate-based design that
allows bidirectional level translation without a
control pin.
The ST2329A accepts a V
L
from 1.65 to 3.6 V
and V
CC
from 1.80 to 5.5 V, making it ideal for
data transfer between low-voltage ASICs/PLD
and higher voltage systems. This device has a tri-
state output mode which can be used to disable
all I/Os.
The ST2329A supports power down mode when
V
CC
is grounded/floating and the device is
disabled via the OE pin.
QFN10
(1.8 x 1.4 mm)
Table 1. Device summary
Order code Package Packaging
ST2329AQTR QFN10 (1.8 x 1.4 mm) Tape and reel (3000 parts per reel)
www.st.com
