SN74LS423DG4

Overview

The SN74LS423DG4 is a dual retrig monostable multivibrator from the Texas Instruments LS logic series. It features two independent circuits in a 16-pin SOIC-Narrow package. Key electrical parameters include a propagation delay of 56 ns, maximum supply current of 12 mA, and low-level output current of 8 mA. It operates within a voltage range of 4.75 V to 5.25 V and supports temperatures from 0°C to +70°C.

Feature Summary

• Dual independent monostable multivibrator configuration
• Retriggerable operation capability
• Standard LS logic family compatibility

Applications

• Pulse generation
• Timing delays
• Waveform shaping

Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's official documentation to confirm compliance details and revision status. Ensure the SOIC-Narrow-16 package matches the design footprint requirements. Cross-reference the LS series specifications with the target system's voltage and temperature constraints before finalizing procurement.

Selection Notes

Select this component for applications requiring dual independent timing channels within standard TTL-compatible logic families. The LS series offers a balance of speed and power consumption suitable for general-purpose digital systems. Verify that the 56 ns propagation delay meets the system's timing requirements and that the 16-pin narrow SOIC package fits the available PCB space.

Part Context

This part belongs to the SN74LS423 family of dual retrig monostable multivibrators. It is manufactured by Texas Instruments using their LS (Low-power Schottky) technology. The device is designed for use in digital circuits where precise timing intervals or pulse width modulation are required, providing reliable performance in commercial and industrial environments.

Replacement Considerations

Check for SN74LS423 variants without the G4 suffix if lead times differ, ensuring functional equivalence. Other manufacturers may offer compatible LS-series monostable multivibrators, but pinout and electrical characteristics must be verified against the original datasheet.