SN74LS423DR

Overview

The SN74LS423DR is a dual retriggerable monostable multivibrator manufactured by Texas Instruments. It operates within the LS logic series and features two independent circuits in a surface-mount SOIC-16 package. The device supports a supply voltage range of 4.75 V to 5.25 V, with a maximum power supply current of 12 mA. Key electrical parameters include a propagation delay of 56 ns, a low-level output current of 8 mA, and a high-level output current of -400 uA. It functions reliably across an operating temperature range of 0°C to +70°C.

Feature Summary

• Dual retriggerable monostable multivibrator architecture
• Surface-mount SOIC-16 packaging for automated assembly
• LS logic series compatibility with standard TTL inputs

Applications

• Pulse width modulation signal generation
• Frequency division circuits
• Timing delay applications

Procurement Notes

Verify the specific manufacturer datasheet for the SN74LS423DR to confirm exact pinout configurations and absolute maximum ratings. Ensure that the selected component meets all required environmental specifications and logic family compatibility standards before final integration into the design.

Selection Notes

Select this component when a dual-channel retriggerable timing solution is required in a compact surface-mount format. The LS logic series offers a balance of speed and power consumption suitable for general-purpose digital timing tasks where standard TTL input levels are utilized.

Part Context

This part belongs to the SN74LS423 family of monostable multivibrators. It provides two independent timing channels within a single integrated circuit, designed for applications requiring precise pulse generation or time-delay functions using external resistor-capacitor networks.

Replacement Considerations

SN74LS423D

FAQ

Is the SN74LS423DR retriggerable?

Yes, the SN74LS423DR is a dual retriggerable monostable multivibrator.

What is the operating temperature range?

The operating temperature range is from 0°C to +70°C.