National Semiconductor 54LS14 DM74LS14 Hex Inverters with Schmitt Trigger Inputs
Summary
This high-performance hex inverter chip provides six independent logic gates, featuring advanced Schmitt Trigger inputs for exceptional noise immunity and reliable clean signal conditioning. Engineered for digital electronics applications, this component ensures stable signal transmission by converting slow-changing inputs into sharp, jitter-free outputs. The comprehensive manual details critical electrical characteristics, absolute maximum ratings, and precise timing data needed by hardware designers and electrical engineers building robust logic circuits.
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In rte rs ith itt rig In ts
54LS14/DM74LS14 Hex Inverters with Schmitt Trigger Inputs General Description This device contains six independent gates each of which performs the logic INVERT function. Each input has hyster- esis which increases the noise immunity and transforms slowly changing input signal to fast changing, jitter free output.
Connection Diagram
Dual-In-Line Package
TL/F/6353–1
Order Number 54LS14DMQB, 54LS14FMQB, 54LS14LMQB, DM74LS14M or DM74LS14N
See NS Package Number E20A, J14A, M14A, N14A or W14B
Function Table
Input Output
High Logic Level Low Logic Level
C1995 National Semiconductor Corporation TL/F/6353 RRD-B30M105/Printed in U. S. A.
Page Summary Contents For National Semiconductor 54LS14 DM74LS14 Hex Inverters with Schmitt Trigger Inputs
Manual Details
| Brand | National |
|---|---|
| Pages | 6 |
| File Size | 123.41 KB |
| Published | May 29, 2026 |
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Frequently Asked Questions
What is the main benefit of using Schmitt Trigger inputs?
They increase noise immunity and convert slowly changing input signals into fast-changing, jitter-free outputs.
How are operational temperature ranges differentiated between 54LS and DM74LS variants?
The 54LS operates from 55°C to 125°C, while the DM74LS operates within a range of 0°C to 70°C.
What is the maximum current capacity during a short circuit condition?
The device can handle a maximum short circuit output current of 100 mA for both 54LS and DM74 types.
Are these chips suitable for life-critical applications?
No, the products are not authorized for use as critical components in life support devices without the express written approval of National Semiconductor Corporation.