SN74LS423NS

Overview

The SN74LS423NS is a dual retriggerable monostable multivibrator from the Texas Instruments SN74LS series. It operates within a supply voltage range of 4.75 V to 5.25 V and supports a maximum propagation delay of 56 ns. The device features two independent circuits per chip, with a low-level output current capability of 8 mA and a high-level output current of -400 uA. Designed for surface-mount applications, it is housed in an SOIC-Narrow-16 package and functions reliably across an operating temperature range of 0°C to +70°C.

Feature Summary

• Dual retriggerable monostable multivibrator configuration
• Surface-mount SOIC-Narrow-16 packaging
• Standard TTL logic compatibility

Applications

• Pulse generation circuits
• Timing delays
• Waveform shaping

Procurement Notes

Verify the specific suffix 'NS' against official manufacturer documentation to confirm the exact package type and pinout configuration. Ensure that the selected component matches the required surface-mount footprint and thermal characteristics for the target design. Cross-reference the datasheet revision history to confirm compliance with current environmental standards and material declarations before finalizing procurement specifications.

Selection Notes

Select this component when a dual-channel timing solution is required in a compact surface-mount form factor. The LS series offers standard propagation delays suitable for general-purpose digital timing applications. Verify that the load capacitance and input signal characteristics align with the device's specified electrical limits to ensure reliable operation within the designated temperature range.

Part Context

This part belongs to the SN74LS family of logic integrated circuits, which are widely used in digital systems for basic logic operations and timing functions. The SN74LS423 specifically addresses applications requiring precise pulse width modulation or time-delay generation using two independent channels within a single package.

Replacement Considerations

Consult the official SN74LS423 datasheet for confirmed substitute part numbers. Verify pin-to-pin compatibility and electrical parameter equivalence before substituting.