74VHC123AMTC

Overview

The onsemi 74VHC123AMTC is a dual retriggerable monostable multivibrator integrated circuit belonging to the 74VHC logic series. It features Schmitt-trigger inputs for noise immunity and operates within a supply voltage range of 2 V to 5.5 V. The device provides two independent circuits in a 16-TSSOP surface-mount package with a width of 4.40 mm. It supports output currents of 8 mA high and low, ensuring robust drive capability across industrial temperature ranges from -40°C to +85°C.

Feature Summary

• Dual retriggerable monostable multivibrator configuration
• Schmitt-trigger inputs for enhanced noise filtering
• High-output current drive capability at 8 mA
• Wide operating voltage range supporting 2 V to 5.5 V

Applications

• Pulse timing and shaping circuits
• Frequency division applications
• Delay line generation
• Timer functions in digital systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific packaging details such as tube quantities. Check for end-of-life notices or obsolescence warnings prior to procurement. Ensure storage conditions adhere to moisture sensitivity level requirements to prevent package damage during soldering processes.

Selection Notes

Select this component when dual independent monostable functionality is required in a compact surface-mount form factor. The VHC series offers faster propagation delays compared to standard HC logic while maintaining CMOS power efficiency. Verify that the 16-TSSOP package dimensions fit the target PCB layout constraints. Ensure the application voltage remains within the specified 2 V to 5.5 V operational limits for reliable performance.

Part Context

This part belongs to the 74VHC family of high-speed CMOS logic devices manufactured by onsemi. It serves as a successor or alternative to older 74HC variants, offering improved switching speeds and lower power consumption. The 74VHC123 specifically addresses applications requiring precise pulse generation and timing control in modern digital electronics.

Replacement Considerations

Direct substitutes include SN74AHC123APWR and SN74AHC123ADBR from Texas Instruments. Other compatible options are 74AHC123APW from Nexperia and 74VHC123AMTCX from onsemi. Verify pin compatibility and electrical specifications before substitution.