Fairchild DM7442A Data Manual
Summary
This integrated circuit is a core digital logic component designed to decode Binary Coded Decimal (BCD) inputs into corresponding decimal outputs. Ideal for electronics engineers developing reliable count or indicator circuits, this decoder translates 4-bit BCD data range to distinct active output signals. The manual provides comprehensive technical documentation, including detailed truth tables, electrical characteristics, absolute maximum ratings, and timing specifications required for proper system integration and optimal circuit performance.
Page 1 Text Content
7442A to ecim al D eco er
August 1986 Revised February 2000
DM7442A BCD to Decimal Decoder General Description Features These BCD-to-decimal decoders consist of eight inverters Diode clamped inputs and ten, four-input NAND gates. The inverters are con-
Also for application as 4-line-to-16-line decoders;
nected in pairs to make BCD input data available for
3-line-to-8-line decoders
decoding by the NAND gates. Full decoding of input logic
All outputs are high for invalid input conditions
ensures that all outputs remain off for all invalid (10–15)
Typical power dissipation 140 m W
input conditions.
Typical propagation delay 17 ns
Ordering Code: Order Number Package Number Package Description DM7442AN N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Connection Diagram
© 2000 Fairchild Semiconductor Corporation DS006516 www.fairchildsemi.com
Page Summary Contents For Fairchild DM7442A Data Manual
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 4 |
| File Size | 42.29 KB |
| Published | June 06, 2026 |
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Frequently Asked Questions
How does the DM7442A handle invalid BCD inputs?
When given an invalid input code (10–15), all outputs are high, ensuring they remain off.
What is the recommended operating supply voltage range for this decoder?
The recommended supply voltage (VCC) operates in the range of 4.75 V to 5.25 V.
What are the typical power dissipation and timing characteristics?
Typical power dissipation is 140 mW, with a typical propagation delay around 17 ns at standard conditions.
What is the maximum recommended operating free air temperature range?
The datasheet recommends an operating area of 0°C to +70°C.