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Product Detailed Parameters
- Description：IC MULTIVIBRATOR 22NS 16SO
- Series：74HCT
- Mfr：NXP USA Inc.
- Package：Tube
- Logic Type：Monostable
- Independent Circuits：2
- Schmitt Trigger Input：No
- Propagation Delay：22 ns
- Current - Output High, Low：4mA, 4mA
- Voltage - Supply：4.5 V ~ 5.5 V
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：16-SO
- Grade：-
- Qualification：-
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Overview
The 74HCT423D,112 is a dual retriggerable monostable multivibrator with reset, manufactured by NXP USA Inc. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an ambient temperature range from -40 °C to +125 °C. The device features Schmitt-trigger inputs for noise tolerance and provides two independent circuits in a 16-lead SSOP package (SOT338-1).
Feature Summary
- Dual retriggerable monostable multivibrator architecture with direct reset functionality.
- Schmitt-trigger action on trigger inputs ensures high tolerance to slow signal transitions.
- Pin-compatible with Low Power Schottky TTL (LSTTL) standards.
Applications
- Pulse width generation and timing control.
- Debouncing of mechanical switches.
- Frequency division and pulse stretching.
Procurement Notes
Verify the specific ordering suffix '112' against current Nexperia/NXP documentation to confirm the SSOP-16 package variant. Confirm RoHS compliance status as required by project specifications. Ensure design-in compatibility with existing LSTTL interfaces if replacing legacy components.
Selection Notes
Select this component when dual independent monostable circuits are required in a compact surface-mount form factor. The HCT logic family ensures compatibility with standard 5V TTL logic levels. Verify that external timing components meet the recommended resistor and capacitor ranges for the desired pulse duration.
Part Context
This part belongs to the 74HCT423 series of dual retriggerable monostable multivibrators. It shares functional similarities with the 74HC423 but utilizes HCT input thresholds. The 'D' suffix indicates the SO16 or SSOP16 plastic small outline package family, specifically the shrink variant in this ordering code.
Replacement Considerations
The 74HCT123 is functionally similar but lacks the ability to be triggered via the reset input. Verify pinout compatibility before substitution. Other manufacturers may offer equivalent parts under different part numbers requiring full electrical verification.
