Product Overview MC74VHC257: Quad 2-Channel Multiplexer with 3-State Outputs For complete documentation, see the data sheet Product Description 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. It consists of four 2-input digital multiplexers with common select (S) and enable (OE)bar inputs. When (OE)bar 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 internal circuit is composed of three stages, including a buffer output which provides high noise immunity and stable output. The inputs tolerate voltages up to 7V, allowing the interface of 5V systems to 3V systems. Features • • • • • • • • • • High Speed: tPD = 4.1ns (Typ) at VCC = 5V Low Power Dissipation: ICC = 4<FONT FACE=SYMBOL>m</FONT>A (Max) at TA = 25°C High Noise Immunity: VNIH = VNIL = 28% VCC Power Down Protection Provided on Inputs Balanced Propagation Delays Designed for 2V to 5.5V Operating Range Low Noise: VOLP = 0.8V (Max) Pin and Function Compatible with Other Standard Logic Families Latchup Performance Exceeds 300mA ESD Performance: HBM > 2000V; Machine Model > 200V For more features, see the data sheet Part Electrical Specifications Product Compliance Status Channels VCC Min (V) VCC Max (V) tpd Max (ns) IO Max (mA) Package Type MC74VHC257DG Pb-free Active 4 2 5.5 7.9 8 SOIC-16 Active 4 2 5.5 7.9 8 SOIC-16 Active 4 2 5.5 7.9 8 TSSOP-16 Active 4 2 5.5 7.9 8 TSSOP-16 Halide free MC74VHC257DR2G Pb-free Halide free MC74VHC257DTG Pb-free Halide free MC74VHC257DTR2G Pb-free Halide free For more information please contact your local sales support at www.onsemi.com Created on: 6/30/2016