74VHC240MTC

Buffers, Drivers, Receivers, Transceivers Overview

The Fairchild Semiconductor 74VHC240MTC is an octal buffer and line driver featuring inverting 3-STATE outputs. It operates within a supply voltage range of 2.0 V to 5.5 V. The device utilizes advanced silicon-gate CMOS technology for high-speed performance. It is housed in a 20-pin TSSOP package with a width of 4.40 mm. Key electrical specifications include a maximum operating frequency of 75 MHz at nominal supply, a load capacitance rating of 50 pF, and a maximum output current of 8 mA. The component supports an operating temperature range from -40 °C to 85 °C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal configuration providing eight independent inverting buffer channels
• 3-STATE output capability allowing direct connection to system buses
• High drive current outputs designed for driving large bus capacitances
• Advanced silicon-gate CMOS construction ensuring low power consumption

Buffers, Drivers, Receivers, Transceivers Applications

• Memory module address and data bus buffering
• Clock distribution networks requiring signal inversion
• General-purpose digital signal isolation and driving
• System bus interface circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific manufacturer source, as Fairchild Semiconductor operations have transitioned to ON Semiconductor. Confirm the exact revision level and date code on the datasheet, as specifications may vary between legacy Fairchild and current ON Semi documentation. Ensure the TSSOP-20 package dimensions match MO-153AC standards. Check for RoHS compliance status depending on the production era of the unit. Validate that the discontinued status does not impact long-term availability requirements.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal inverting buffer with tri-state control is required for high-speed digital interfaces. The 74VHC series offers speed comparable to low-power Schottky TTL while maintaining CMOS power efficiency. Ensure the system voltage aligns with the 2.0 V to 5.5 V operating range. Consider the 20-TSSOP package constraints for PCB layout. Verify input compatibility if interfacing with different logic families, noting that VHC inputs are CMOS-compatible rather than TTL-compatible like HCT variants.

Buffers, Drivers, Receivers, Transceivers Part Context

The 74VHC240 belongs to the 74VHC (Very High Speed CMOS) family, which provides performance levels similar to 74HC devices but with improved switching speeds. This specific part number denotes the octal inverting variant with 3-STATE outputs. The 'MTC' suffix indicates the 20-lead Thin Shrink Small Outline Package (TSSOP). This family is widely used in consumer electronics and computing equipment where space-saving packages and moderate speed are prioritized.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers include MM74HCT240MTC for TTL-compatible applications. Other compatible logic families such as 74HC240 or 74AHCT240 may serve as functional alternatives depending on voltage and speed requirements. Verify pinout compatibility before substitution.