The MC74VHC157 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.
   
• High Speed: tPD = 4.1 ns (Typ) at VCC = 5 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 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: 82 FETs
• 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.