ST2349A屬于集成電路（IC）的轉(zhuǎn)換器電平移位器。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的ST2349A轉(zhuǎn)換器，電平移位器邏輯轉(zhuǎn)換器或電平移位器 IC 可用于在數(shù)字邏輯設(shè)備之間傳遞信息，這些設(shè)備可在不同/不兼容的供電電壓下工作，或可實(shí)現(xiàn)不同的信令方式。例如，可以將需要 5 V 電源的數(shù)字輸出傳感器連接到具有 3.3 V I/O 電源的 FPGA，或者在 CMOS 或 TTL 等單端信令方式與 PECL 或 LVDS 等差分技術(shù)之間進(jìn)行轉(zhuǎn)換。

描述 Description

The ST2349A 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 bi-directional level translation without a control pin.

特性 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

■ 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

Applications

■ Low voltage system level translation

■ Mobile phones and other mobile devices

■ I2C level translation

■ UART level translation