74VHC221AMTCX

Overview

The 74VHC221AMTCX is a dual non-retriggerable monostable multivibrator manufactured by Fairchild Semiconductor. It utilizes advanced silicon-gate CMOS technology to achieve high-speed operation comparable to low-power Schottky TTL while maintaining CMOS low power dissipation and high noise immunity. The device is housed in a 16-TSSOP surface-mount package with a width of 4.40 mm. It operates within a supply voltage range of 2.0 V to 5.5 V and supports an operating temperature range from -40°C to 85°C.

Feature Summary

• Dual non-retriggerable monostable multivibrator configuration
• High-speed operation utilizing advanced silicon-gate CMOS technology
• Low power dissipation with high noise immunity characteristics

Applications

• Timing pulse generation circuits
• Delay line applications
• Frequency division circuits

Procurement Notes

Verify the specific manufacturer source, as Fairchild Semiconductor operations have transitioned to onsemi. Confirm that the component meets current RoHS compliance standards and check for any pinout or electrical parameter updates due to corporate restructuring. Ensure the TSSOP-16 package dimensions match your PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when a dual-channel timing solution is required in a compact surface-mount form factor. It is suitable for designs needing Schottky TTL speed performance without the associated power consumption. Consider the 2.0 V to 5.5 V supply range compatibility with your system logic levels and ensure the thermal management supports the specified -40°C to 85°C ambient operating conditions.

Part Context

This part belongs to the 74VHC series of high-speed CMOS logic devices. The VHC series is designed to offer performance improvements over standard HC logic families, specifically targeting applications requiring faster switching speeds. The 74VHC221 variant specifically provides two independent monostable multivibrator channels within a single integrated circuit package.

Replacement Considerations

Direct replacements include MM74HC221AMTCX for HC-series compatibility and 74VHC221AMTCX for identical VHC-series performance. Verify pinout consistency and electrical specifications against the original datasheet before substitution.