May 2008 Rev 4 1/21
21
ST2329
2-bit dual supply level translator
without direction control pin
Features
■ 90 Mbps (max) data rate when driven by a
totem pole driver
■ 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 12 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 ST2329 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 ST2329 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 ST2329 supports power down mode when
V
CC
is grounded/floating and the device is
disabled via the OE pin.
QFN10L (1.8 x 1.4 mm)
Table 1. Device summary
Order code Package Packaging
ST2329QTR QFN10L (1.8 x 1.4 mm) Tape and reel (3000 parts per reel)
www.st.com
Obsolete Product(s) - Obsolete Product(s)
