74LS42 Datasheet | National Semiconductor

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 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 Diagram TL F 6365 - 2 C1995 National Semiconductor Corporation TL F 6365 RRD-B30M105 Printed in U S A Absolute Maximum Ratings (Note) If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage 7V Input Voltage 7V Operating Free Air Temperature Range b 55 C to a 125 C DM54LS and 54LS DM74LS 0 C to a 70 C Storage Temperature Range b 65 C to a 150 C Note The ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed The device should not be operated at...