MC74VHCT244ADTR2

Overview

The MC74VHCT244ADTR2 is an octal bus buffer and line driver from the VHCT logic family, manufactured by onsemi. It features eight non-inverting inputs and outputs with three-state capability, housed in a TSSOP-20 surface-mount package. The device operates within a supply voltage range of 4.5 V to 5.5 V, drawing a maximum static current of 4 µA. It supports a wide operating temperature range from -55°C to +125°C and exhibits a propagation delay of 8.4 ns. The component is designed for high-speed digital applications requiring robust signal buffering.

Feature Summary

• Provides octal (eight-channel) buffering and line driving capabilities with non-inverting logic.
• Integrates three-state outputs to facilitate efficient bus-oriented memory and circuit switching.
• Utilizes advanced CMOS technology to achieve low power consumption alongside high-speed performance.

Applications

• Bus-oriented memory and circuit switching systems
• Clock drivers and buffer circuits
• High-speed data transmission lines

Procurement Notes

Verify the complete part number suffix, as the provided model lacks the 'G' designation typically indicating RoHS compliance in official onsemi documentation. Confirm the specific package variant and tape/reel specifications against the manufacturer's latest datasheet to ensure compatibility with automated assembly processes and environmental regulations.

Selection Notes

Select this component when designing systems that require octal buffering with three-state control at 5V logic levels. The VHCT series ensures TTL-compatible input thresholds while maintaining CMOS output drive characteristics. Consider the TSSOP-20 package constraints and the extended industrial temperature range suitability for harsh environments compared to commercial grade alternatives.

Part Context

This component belongs to the MC74VHCT244A series of octal buffers and line drivers. It is part of onsemi's VHCT logic family, which combines the speed of HC/HCT logic with low power consumption. The device serves as a critical interface element in digital electronics for managing data flow across multiple lines simultaneously.

Replacement Considerations

Direct replacements include MC74VHCT244ADTR2G or MC74VHCT244ADTR2G from onsemi. Cross-brand equivalents such as SN74VHCT244PW from Texas Instruments may be considered if pinout and electrical specifications match exactly.