National Semiconductor DM5405 DM7405 Hex Inverters with Open-Collector Outputs
Summary
This integrated circuit features six independent inverter gates with open-collector outputs, making it ideal for digital logic design that requires precise signal inversion. The comprehensive technical manual details vital electrical characteristics—including supply voltage ranges, current limits, and propagation delay times—ensuring reliable performance across diverse operating temperatures. This component is essential for electronics engineers and designers building robust low-power circuits requiring stable, high-performance gate logic functionality.
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DM5405/DM7405 Hex Inverters with Open-Collector Outputs General Description Pull-Up Resistor Equations This device contains six independent gates each of which VCC (Min) VOH
performs the logic INVERT 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/6495–1
Order Number DM5405J, DM5405W or DM7405N See NS Package Number J14A, N14A or W14B
Function Table
Input Output
High Logic Level Low Logic Level
C1995 National Semiconductor Corporation TL/F/6495 RRD-B30M105/Printed in U. S. A.
Page Summary Contents For National Semiconductor DM5405 DM7405 Hex Inverters with Open-Collector Outputs
Manual Details
| Brand | National |
|---|---|
| Pages | 4 |
| File Size | 98.00 KB |
| Published | May 29, 2026 |
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Frequently Asked Questions
What type of resistors do these inverters require?
They require external pull-up resistors for proper logical operation, as the output is open-collector.
What are the different package options available?
The packages include Dual-In-Line (J14A), Molded Dual-In-Line (N14A), and Flat Package (W14B).
Is this device suitable for industrial environments?
The recommended operating free air temperature range is 0°C to 70°C for the DM7405, while the DM5405 covers -55°C to 125°C.
How much does it draw when the outputs are low?
The Supply Current with Outputs Low (CCL) is specified as 18 mA (typical).
What function do these components perform?
They contain six independent gates, each performing an INVERT logic function.