TXU0202_V01中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Fully configurable dual-rail design allows each port

to operate from 1.1 V to 5.5 V

? Up to 200 Mbps support for 3.3 V to 5.0 V

? Schmitt-trigger inputs allows for slow and noisy

inputs

? Inputs with integrated static pull-down resistors

prevent channels from floating

? High drive strength (up to 12 mA at 5 V)

? Low power consumption

– 2.5 μA maximum (25°C)

– 6 μA maximum (–40°C to 125°C)

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

– If either VCC input is <100 mV or disconnected,

all outputs are disabled and become highimpedance

? Ioff supports partial-power-down mode operation

? Control logic (OE) with VCC(MIN) circuitry allows for

control from either A or B port

? Pinout compatible with TXB family level shifters

? Available in another variant that supports common

applications: TXU0102

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

? Latch-up performance exceeds 100 mA per JESD

78, class II

? ESD protection exceeds JESD 22

– 2500-V human-body model

– 1500-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 level shifting

? Push-pull level shifting (UART, SPI, JTAG, and so

forth)

3 Description

TXU0202 is a 2-bit, dual-supply noninverting fixed

direction voltage level translation device. Ax pins

are referenced to VCCA logic level, OE pin can be

referenced to either VCCA or VCCB logic levels, and Bx

pins are referenced to VCCB logic levels. The A port

is able to accept input voltages ranging from 1.1 V to

5.5 V, while the B port can also accept input voltages

from 1.1 V to 5.5 V. Fixed direction data transmission

can occur from A to B or B to A when OE is set to

high in reference to either supply. When OE is set to

low, all output pins are in the high-impedance state.

See Device Functional Modes for a summary of the

operation of the control logic.