National Semiconductor DM7439 Data Sheet
Summary
The DM7439 is a robust quad 2-input NAND buffer featuring an open-collector output, designed for reliable signal buffering in digital circuits. This technical manual provides comprehensive specifications required by engineers, including operating temperature ranges, advanced electrical characteristics (voltage profiles and current draw), timing parameters, and absolute maximum ratings. It serves as a critical resource for electronics designers who require stable, high-performance NAND logic components for industrial and commercial applications.
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DM7439 Quad 2-Input NAND Buffer with Open-Collector Output General Description This device contains four independent gates with two data inputs, each which performs the logic NAND function.
Connection Diagram
Dual-In-Line Package
TL/F/9776–1
Order Number DM7439N See NS Package Number N14A
C1995 National Semiconductor Corporation TL/F/9776 RRD-B30M115/Printed in U. S. A.
Page Summary Contents For National Semiconductor DM7439 Data Sheet
Manual Details
| Brand | National |
|---|---|
| Pages | 4 |
| File Size | 79.50 KB |
| Published | July 16, 2026 |
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Frequently Asked Questions
What type of logic function does the DM7439 perform?
It contains four independent gates, and each gate performs the logic NAND function.
What is the recommended operating temperature range for this device?
The recommended free air operating temperature range is 0 C to 70 C.
What are the typical propagation delay times (PLH/PHL) at specified conditions?
At V5V and T25C, the typical PLH is 22 ns, and PHL is 18 ns.
How many outputs should be shorted simultaneously during operation?
Not more than one output should be shorted at a time.