National Semiconductor DM5403 DM7403 Quad 2-Input NAND Gates with Open-Collector Outputs
Summary
These integrated circuits are quad 2-input NAND logic gates featuring open-collector outputs, ideal for digital electronics design requiring precise logical control. The accompanying manual provides comprehensive details necessary for application, covering electrical specifications, absolute maximum ratings, and operational guidelines for proper interfacing with external pull-up resistors. This resource is essential for hardware engineers and system designers integrating robust, low-power logic components into their circuit boards.
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DM5403/DM7403 Quad 2-Input NAND Gates with Open-Collector Outputs General Description Pull-Up Resistor Equations This device contains four independent gates each of which VCC (Min) VOH
performs the logic NAND function. The open-collector out- N1 (IOH) N2 (IIH) puts require external pull-up resistors for proper logical op- eration. VCC (Max) VOL
IOL N3 (IIL) Where: N1 (IOH) total maximum output high current for all outputs tied to pull-up resistor N2 (IIH) total maximum input high current for all inputs tied to pull-up resistor N3 (IIL) total maximum input low current for all inputs tied to pull-up resistor
Connection Diagram
Dual-In-Line Package
TL/F/6493–1
Order Number DM5403J or DM7403N See NS Package Number J14A or N14A
Function Table
Inputs Output
High Logic Level Low Logic Level
C1995 National Semiconductor Corporation TL/F/6493 RRD-B30M105/Printed in U. S. A.
Page Summary Contents For National Semiconductor DM5403 DM7403 Quad 2-Input NAND Gates with Open-Collector Outputs
Manual Details
| Brand | National |
|---|---|
| Pages | 4 |
| File Size | 94.27 KB |
| Published | June 02, 2026 |
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Frequently Asked Questions
Is external hardware required for proper operation?
Yes, this device uses an open-collector output and requires external pull-up resistors for proper logic operation.
What is the maximum operating temperature range?
The DM5403 operates from 0°C to 125°C, while the DM7403 operates from 0°C to 70°C.
If I use this device in a life-support system, is it certified?
No, national products are not authorized for use as critical components in life support devices without express written approval.
What is the supply voltage range recommended for operation?
The recommended operating conditions suggest using a Supply Voltage between 4.5V and 5.5V.