SN74LS423N

Overview

The SN74LS423N 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 features two independent circuits per package. The device utilizes a 16-pin PDIP (0.300 inch, 7.62 mm) through-hole package. Key electrical parameters include a propagation delay of 28 ns, a maximum power supply current of 12 mA, and output drive capabilities of 8 mA low-level and 400 µA high-level current. It supports an operating temperature range of 0°C to +70°C.

Feature Summary

• Dual independent retriggerable monostable multivibrator configuration
• Standard LS TTL logic family compatibility
• Through-hole 16-pin DIP packaging for prototyping

Applications

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

Procurement Notes

Verify the specific suffix 'N' confirms the 16-pin PDIP through-hole package variant. Confirm RoHS compliance status as specifications may vary by production batch. Ensure the application environment remains within the specified 0°C to +70°C commercial temperature range. Validate that the 5V supply tolerance aligns with system requirements before integration.

Selection Notes

Select this component when dual independent timing functions are required in a standard DIP format. The LS series offers moderate speed suitable for general-purpose digital logic. Consider the 28 ns propagation delay for timing accuracy requirements. Verify that the through-hole mounting style matches the PCB design constraints compared to surface-mount alternatives like the SN74LS423D.

Part Context

This part belongs to the SN74LS423 family of dual retriggerable monostable multivibrators. It is manufactured by Texas Instruments under the SN74LS logic series. The device serves as a fundamental timing element in digital systems, providing precise pulse generation capabilities. It is distinct from other logic families such as HC or HCT due to its specific TTL characteristics and power consumption profile.

Replacement Considerations

The SN74LS423D is a surface-mount equivalent offering identical logical functionality in an SOIC-Narrow-16 package. Cross-referencing with other manufacturers' LS-series monostable multivibrators requires verification of pinout compatibility and electrical parameter alignment.