74HCT123D-Q100J

Multivibrators Overview

The Nexperia 74HCT123D-Q100J is a dual retriggerable monostable multivibrator with reset, part of the HCT logic series. It operates within a supply voltage range of 4.5 V to 5.5 V and features TTL-compatible input levels. The device provides two independent circuits in an SO-16 (SOT109) package. Key electrical parameters include a maximum propagation delay of 77 ns at 4.5 V and 26 ns at 5 V. It supports a maximum power dissipation of 500 mW and functions reliably across an ambient temperature range of -40 °C to +125 °C.

Multivibrators Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 1 standards for extended reliability.
• Dual retriggerable architecture allowing pulse width extension via active edge inputs.
• Schmitt-trigger action on trigger inputs ensures tolerance to slow signal transitions.
• Integrated clamp diodes enable direct interfacing with voltages exceeding the supply rail.

Multivibrators Applications

• Timing generation and pulse width modulation in automotive electronic systems.
• Debouncing mechanical switches to eliminate contact bounce artifacts.
• Frequency division and pulse stretching in digital logic circuits.

Multivibrators Procurement Notes

Verify that the ordering suffix matches the specific package variant required for the design. Confirm the component meets AEC-Q100 Grade 1 requirements if deployed in automotive environments. Ensure the selected version aligns with the specified operating temperature range and supply voltage constraints defined in the official datasheet.

Multivibrators Selection Notes

Select this component when TTL-level compatibility is required alongside high-speed performance. The HCT series offers superior noise immunity compared to standard HC logic. Verify that the external timing components allow for the desired pulse duration within the specified resistor and capacitor limits.

Multivibrators Part Context

This device belongs to the Nexperia 74HCT123-Q100 family of dual monostable multivibrators. It shares functional characteristics with the 74HC123-Q100 but utilizes HCT technology for TTL input compatibility. The product line includes various package options such as TSSOP and DHVQFN to accommodate different PCB layout requirements.

Multivibrators Replacement Considerations

The 74HCT123PW-Q100 serves as a pin-compatible alternative utilizing the TSSOP16 package. Designers must verify that the thermal characteristics and physical dimensions of the replacement package fit the existing footprint constraints.