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7442

Fairchild Semiconductor
Part Number 7442
Manufacturer Fairchild Semiconductor
Description BCD to Decimal Decoder
Published Apr 3, 2005
Detailed Description DM7442A BCD to Decimal Decoder August 1986 Revised February 2000 DM7442A BCD to Decimal Decoder General Description Th...
Datasheet PDF File 7442 PDF File

7442
7442

Overview
DM7442A BCD to Decimal Decoder August 1986 Revised February 2000 DM7442A BCD to Decimal Decoder 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 s Diode clamped inputs s Also for application as 4-line-to-16-line decoders; 3-line-to-8-line decoders s All outputs are high for invalid input conditions s Typical power dissipation 140 mW s Typical propagation delay 17 ns Ordering Code: Order Number DM7442AN Package Number N16E Package Description 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.
300 Wide Connection Diagram © 2000 Fairchild Semiconductor Corporation DS006516 www.
fairchildsemi.
com DM7442A Function Table No.
D 0 1 2 3 4 5 6 7 8 9 I N V A L I D H = HIGH Level L = LOW Level BCD Input 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 H H H H H H H H H H H 1 H L H H H H H H H H H H H H H H 2 H H L H H H H H H H H H H H H H 3 H H H L H H H H H H H H H H H H L L L L L L L L H H H H H H H H Decimal Output 4 H H H H L H H H H H H H H H H H 5 H H H H H L H H H H H H H H H H 6 H H H H H H L H H H H H H H H H 7 H H H H H H H L H H H H H H H H 8 H H H H H H H H L H H H H H H H 9 H H H H H H H H H L H H H H H H Logic Diagram www.
fairchildsemi.
com 2 DM7442A Absolute Maximum Ratings(Note 1) Supply Voltage Input Voltage Operating Free Air Temperature Range Storage Temperature Range 7V 5.
5V 0°C to +70°C −65°C to +150°C Note 1: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed.
The device should not be operated at these limits.
The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Re...


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