SN74LXC1T14集成电路（IC）的转换器电平移位器规格书PDF中文资料

SN74LXC1T14属于集成电路（IC）的转换器电平移位器。由德州仪器制造生产的SN74LXC1T14转换器，电平移位器逻辑转换器或电平移位器 IC 可用于在数字逻辑设备之间传递信息，这些设备可在不同/不兼容的供电电压下工作，或可实现不同的信令方式。例如，可以将需要 5 V 电源的数字输出传感器连接到具有 3.3 V I/O 电源的 FPGA，或者在 CMOS 或 TTL 等单端信令方式与 PECL 或 LVDS 等差分技术之间进行转换。

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

• Input with integrated dynamic pull-down resistors

help reduce external component count

• 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

• Overvoltage tolerant inputs accept voltages up to

5.5 V regardless of supply voltage.

• Ioff supports partial-power-down mode operation

• 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

• General purpose I/O (GPIO) level shifting

3 Description

The SN74LXC1T14 is a single bit, dual-supply

inverting voltage level translation device with Schmitttrigger

input. The input pin A is referenced to VCCI

logic levels, and output pin Y is referenced to VCCO

logic levels. The input pin A is able to accept voltages

ranging from 1.1 V to 5.5 V and can be connected

directly to VCCI or GND. See Device Functional Modes

for a summary of the operation of the logic.

This device ensures low power consumption and

is fully specified for partial-power-down applications

using Ioff. The Ioff circuitry disables the outputs when

the device is powered down. This inhibits current

backflow into the device which prevents damage to

the device.