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ST2349

STMicroelectronics
Part Number ST2349
Manufacturer STMicroelectronics
Description 4-bit dual supply level translator
Published Jan 6, 2013
Detailed Description ST2349 4-bit dual supply level translator without direction control pin Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 45 Mbps (max) da...
Datasheet PDF File ST2349 PDF File

ST2349
ST2349

Overview
ST2349 4-bit dual supply level translator without direction control pin Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 45 Mbps (max) data rate when driven by a totem pole driver 4 Mbps (max) data rate when driven by an open drain pole driver Bi-directional level translation without direction control pin Wide VL voltage range of 1.
65 to 3.
6 V Wide VCC 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 24 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 QFN16 (2.
6 x 1.
8 mm) package QFN16L (2.
6 x 1.
8 mm) Description The ST2349 is a 4-bit dual supply level translator which provides the level shifting capability to allow data transfer in a multi-voltage system.
Externally applied voltages, VCC and VL, 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.
http://www.
DataSheet4U.
net/ Applications ■ ■ ■ ■ Low voltage system level translation Mobile phones and other mobile devices I2C level translation UART level translation The ST2349 accepts a VL from 1.
65 to 3.
6 V and VCC 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 ST2349 supports power down mode when VCC is grounded/floating and the device is disabled via the OE pin.
Table 1.
Device summary Order code ST2349QTR Package QFN16 (2.
6 x 1.
8 mm) Packaging Tape & reel (3000 parts per reel) November 2007 Rev 3 1/23 www.
st.
com 23 datasheet pdf - http://www.
DataSheet4U.
net/ Contents ST2349 Contents 1 Pin settings .
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5 1.
1 1.
2 Pin connection .
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