SN74LXC2T45集成电路（IC）的转换器电平移位器规格书PDF中文资料

1 Features

• Fully configurable dual-rail design allows each port

to operate from 1.1 V to 5.5 V

• Robust, glitch-free power supply sequencing

• Up to 420-Mbps support for 3.3 V to 5.0 V

• Schmitt-trigger inputs allow for slow or noisy inputs

• I/O's with integrated dynamic pull-down resistors

help reduce external component count

• Control inputs with integrated static pull-down

resistors allow for floating control inputs

• High drive strength (up to 32 mA at 5 V)

• Low power consumption

– 3-μA maximum (25°C)

– 6-μA maximum (–40°C to 125°C)

• VCC isolation and VCC disconnect (Ioff-float) feature

– If either VCC supply is < 100 mV or

disconnected, all I/O's get pulled-down and

then become high-impedance

• Ioff supports partial-power-down mode operation

• Compatible with LVC family level shifters

• Control logic (DIR) are referenced to VCCA

• Operating temperature from –40°C to +125°C

• Latch-up performance exceeds 100 mA per JESD

78, class II

• ESD protection exceeds JESD 22

– 4000-V human-body model

– 1000-V charged-device model

2 Applications

• Eliminate slow or noisy input signals

• Driving indicator LEDs or Buzzers

• Debouncing a mechanical switch

• Infotainment head unit

• ADAS fusion

3 Description

The SN74LXC2T45 is a dual-bit, dual-supply

noninverting bidirectional voltage level translation

device. Ax pins and control pin (DIR) are referenced

to VCCA logic levels, and Bx pins are referenced to

VCCB logic levels. The A port is able to accept I/O

voltages ranging from 1.1 V to 5.5 V, while the B port

can accept I/O voltages from 1.1 V to 5.5 V. A high

on DIR allows data transmission from A to B and a

low on DIR allows data transmission from B to A.

See Device Functional Modes for a summary of the

operation of the control logic.