器件名称:
DM74LS42
功能描述:
Decimal Decoders
文件大小:
128.99KB 共6页
简 介:
54LS42 DM54LS42 DM74LS42 BCD Decimal Decoders June 1989 54LS42 DM54LS42 DM74LS42 BCD Decimal Decoders General Description These BCD-to-decimal decoders consist of eight inverters and ten four-input NAND gates The inverters are connected in pairs to make BCD input data available for decoding by the NAND gates Full decoding of input logic ensures that all outputs remain off for all invalid (10–15) input conditions Features Y Y Y Y Diode clamped inputs Also for applications as 4-line-to-16-line decoders 3line-to-8-line decoders All outputs are high for invalid input conditions Alternate Military Aerospace device (54LS42) is available Contact a National Semiconductor Sales Office Distributor for specifications Connection Diagram Dual-In-Line Package Function Table No 0 1 2 3 4 5 6 7 8 9 I N V A L I D BCD Inputs D L L L L L L L L H H H H H H H H C L L L L H H H H L L L L H H H H B L L H H L L H H L L H H L L H H A L H L H L H L H L H L H L H L H 0 L H H H H 1 H L H H H 2 Decimal Outputs 3 4 5 6 7 8 9 H H H H H H H H H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H L H H H H L H H H H L H H H H L H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H TL F 6365 – 1 Order Number 54LS42DMQB 54LS42FMQB DM54LS42J DM54LS42W DM74LS42M or DM74LS42N See NS Package Number J16A M16A N16E or W16A H e High Level L e Low Level Logic Diag……
