SN74123N

Overview

The SN74123N is a dual retriggerable monostable multivibrator from the Texas Instruments TTL/H/L series. It features two independent RC-configurable circuits housed in a 16-pin PDIP package. The device operates within a supply voltage range of 4.75V to 5.25V and supports a maximum propagation delay of 40 ns. It draws a maximum supply current of 66 mA and functions reliably across an operating temperature range of 0°C to 70°C.

Feature Summary

• Dual independent monostable multivibrator circuits with RC timing configuration
• Retriggerable operation allows pulse extension upon subsequent trigger events
• Complementary output polarity provides both true and inverted signals

Applications

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

Procurement Notes

Verify the specific manufacturer part number against official Texas Instruments documentation to confirm pinout compatibility and electrical specifications. Ensure the selected component matches the required PDIP-16 package type and TTL logic family standards for your design integration.

Selection Notes

Select this component when dual-channel monostable functionality is required within standard TTL voltage constraints. Consider the PDIP-16 through-hole package for prototyping or legacy board designs. Verify that the 40 ns propagation delay and 66 mA current consumption align with system power and speed requirements.

Part Context

This device belongs to the SN74123 family of dual retriggerable monostable multivibrators. It serves as a hardware solution for generating precise single pulses from external triggers, distinct from non-retriggerable variants like the SN74121. The N suffix denotes the plastic DIP package variant suitable for general-purpose digital logic applications.

Replacement Considerations

SN74123NE4