SN74LS423NS Texas Instruments In Stock
SN74LS423NS is a dual retriggerable monostable multivibrator IC by Texas Instruments, designed for pulse-width generation and timing applications. Key specs: 4.75V to 5.25V supply voltage, 16-pin SOIC package, programmable pulse width via external RC components. From $0.80, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual retriggerable monostable multivibrators enable independent timing control in a single package
- Programmable output pulse width via external resistor and capacitor for flexible timing design
- Active-low and active-high trigger inputs provide versatile edge-triggered control options
- TTL-compatible LS-series technology balances low power with reliable switching performance
Applications
The SN74LS423NS is commonly used in digital timing circuits, pulse-width generation, and debouncing applications in microcontroller-based systems and industrial control equipment. Its dual retriggerable design is well-suited for generating precise delay signals in communication interfaces and event sequencing logic. The device is frequently found in legacy digital systems requiring stable monostable multivibrator functionality with standard TTL logic levels.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the function of the SN74LS423NS?
The SN74LS423NS is a dual retriggerable monostable multivibrator that generates a single output pulse of programmable width determined by external resistor and capacitor values, triggered by rising or falling edge inputs at 5V TTL logic levels.
What package does the SN74LS423NS come in?
The SN74LS423NS is packaged in a 16-pin narrow SOIC (Small Outline Integrated Circuit) surface-mount package, offering a compact profile suitable for automated PCB assembly in space-constrained designs.
What are typical applications for the SN74LS423NS?
Typical applications include pulse-width generation, signal debouncing, timing delays in microcontroller systems, one-shot pulse generators for interrupt handling, and edge-detection circuits in industrial automation and digital communication equipment.
Can the SN74LS423NS be retriggered during an output pulse?
Yes, the SN74LS423NS supports retriggering. A new trigger edge applied during an active output pulse resets the internal timing, extending the output pulse duration by the full programmed width from the moment of the new trigger event.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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