DM7439 is a digital logic chip produced by National Semiconductor Corporation. It contains 4 independent gates, each with 2 data inputs, and each gate performs the logic NAND function.
This document is a datasheet for the National Semiconductor DM7439, a logic device containing four independent 2-input NAND gates with open-collector outputs. The device is designed to perform the NAND logic function and is available in a 14-lead dual-in-line package (N14A).
| Supply Voltage | 4.75V to 5.25V |
|---|---|
| High Level Input Voltage | 2V |
| Low Level Input Voltage | 0.8V |
| High Level Output Current | -0.25 mA |
| Low Level Output Current | 48 mA |
| Operating Temperature Range | 0°C to +70°C |
| Low to High Level Propagation Delay | 22 ns |
| High to Low Level Propagation Delay | 18 ns |
| Package Type | 14-Lead Molded Dual-In-Line Package |
The device contains four independent gates with two data inputs, each which performs the logic NAND function.
The maximum supply voltage is 5.25V.
The maximum low level output current is 48 mA.