SN74LVC16T245DGVR屬于集成電路（IC）的轉(zhuǎn)換器電平移位器。由美國德州儀器公司制造生產(chǎn)的SN74LVC16T245DGVR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。

1 Features

1? Control Inputs VIH/VIL Levels are Referenced to

V CCA Voltage

? VCC Isolation Feature – If Either VCC Input is at

GND, Both Ports are in the High-Impedance State

? Overvoltage-Tolerant Inputs and Outputs Allow

Mixed Voltage-Mode Data Communications

? Fully Configurable Dual-Rail Design Allows Each

Port to Operate Over the Full 1.65-V to 5.5-V

Power-Supply Range

? I off Supports Partial-Power-Down Mode Operation

? Latch-Up Performance Exceeds 100 mA Per

JESD 78, Class II

? ESD Protection Exceeds JESD 22

2 Applications

? Personal Electronics

? Industrial

? Enterprise

? Telecom

3 Description

This 16-bit noninverting bus transceiver uses two

separate configurable power-supply rails. The A port

is designed to track VCCA. VCCA accepts any supply

voltage from 1.65 V to 5.5 V. The B port is designed

to track VCCB. VCCB accepts any supply voltage from

1.65 V to 5.5 V. This allows for universal low-voltage

bidirectional translation between any of the 1.8-V,

2.5-V, 3.3-V, and 5-V voltage nodes.

The SN74LVC16T245 device is designed for

asynchronous communication between two data

buses. The logic levels of the direction-control (DIR)

input and the output-enable (OE) input activate either

the B-port outputs or the A-port outputs or place both

output ports into the high-impedance mode. The

device transmits data from the A bus to the B bus

when the B-port outputs are activated, and from the B

bus to the A bus when the A-port outputs are

activated. The input circuitry on both A and B ports

always is active and must have a logic HIGH or LOW

level applied to prevent excess ICC and ICCZ.