器件名称:
MC74VHC157
功能描述:
Quad 2-Channel Multiplexer
文件大小:
149.73KB 共6页
简 介:
MOTOROLA SEMICONDUCTOR TECHNICAL DATA Quad 2-Channel Multiplexer 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. It consists of four 2–input digital multiplexers with common select (S) and enable (E) inputs. When E 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. High Speed: tPD = 4.1ns (Typ) at VCC = 5V Low Power Dissipation: ICC = 4A (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 Chip Complexity: 82 FETs or 20 Equivalent Gates EXPANDED LOGIC DIAGRAM 2 A0 B0 A1 B1 NIBBLE INPUTS A2 B2 A3 B3 E S 10 14 13 15 1 12 Y3 9 Y2 3 5 6 11 7 Y1 DATA OUTPUTS 4 Y0 MC74VHC157 D SUFFIX 16–LEAD SOIC PACKAGE CASE 751B–05 DT SUFFIX 16–LEAD TSSOP PACKAGE CA……
