Quad 2-Channel Multiplexer with 3-State Outputs

The MC74LVX257 is an advanced high speed CMOS quad 2−channel multiplexer fabricated with silicon gate CMOS technology.

It consists of four 2−input digital multiplexers with common select (S) and enable (OE) inputs. When (OE) is held High, selection of data is inhibited and all the outputs go Low.

The select decoding determines whether the A or B inputs get routed to the corresponding Y outputs.

The inputs tolerate voltages up to 7.0 V, allowing the interface of 5.0 V systems to 3.0 V systems.

Features

• High Speed: tPD = 4.5 ns (Typ) at VCC = 3.3 V

• Low Power Dissipation: ICC = 4 μA (Max) at TA = 25°C

• High Noise Immunity: VNIH = VNIL = 28 VCC

• Power Down Protection Provided on Inputs

• Balanced Propagation Delays

• Designed for 2.0 V to 5.5 V Operating Range

• Low Noise: VOLP = 0.8 V (Max)

• Pin and Function Compatible with Other Standard Logic Families

• Latchup Performance Exceeds 300 mA

• Chip Complexity: FETs = 100; Equivalent Gates = 25

• ESD Performance:

Human Body Model > 2000 V;

Machine Model > 200 V

• Pb−Free Packages are Available*

MC74LVX257DTR2属于集成电路（IC） > 信号开关，多路复用器，解码器。安森美半导体公司制造生产的MC74LVX257DTR2信号开关，多路复用器，解码器逻辑型信号开关、多路复用器和编码器 IC 可用于对以数字格式表示数据的电信号进行路由和选择。这些器件与设计用于模拟信号的类似产品有所不同，它们保留的信息表示为两个电状态之一，而不是两个外部界限内的无穷变化量。