The MC74VHC257 is an advanced high speed CMOS quad 2--channel multiplexer fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation.

The inputs tolerate voltages up to 7 V, allowing the interface of 5 V systems to 3 V systems.

? High Speed: tPD = 4.1 ns (Typ) at VCC = 5.0 V

? Low Power Dissipation: ICC = 4.0 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

? ESD Performance: HBM > 2000 V; Machine Model > 200 V

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

? These devices are available in Pb--free package(s). Specifications herein apply to both standard and Pb--free devices. Please see our website at www.onsemi.com for specific Pb--free orderable part numbers, or contact your local ON Semiconductor sales office or representative.

MC74VHC257DTR2屬于集成電路（IC） > 信號開關，多路復用器，解碼器。安森美半導體公司制造生產(chǎn)的MC74VHC257DTR2信號開關，多路復用器，解碼器邏輯型信號開關、多路復用器和編碼器 IC 可用于對以數(shù)字格式表示數(shù)據(jù)的電信號進行路由和選擇。這些器件與設計用于模擬信號的類似產(chǎn)品有所不同，它們保留的信息表示為兩個電狀態(tài)之一，而不是兩個外部界限內(nèi)的無窮變化量。