MC74VHC244DTG

Overview

The MC74VHC244DTG is an octal bus buffer and line driver manufactured by onsemi, belonging to the VHCT logic family. It features eight non-inverting inputs and outputs with three-state capability, housed in a 20-pin TSSOP surface-mount package. The device operates within a supply voltage range of 2.0 V to 5.5 V, ensuring compatibility with various digital systems. Key electrical characteristics include a maximum static current of 20 µA and a propagation delay of 13 ns at 5 V. It supports a load capacitance of up to 50 pF per output and functions reliably across an industrial temperature range from -55°C to +125°C.

Feature Summary

• Provides octal buffering with three-state outputs for efficient data bus management
• Operates over a wide supply voltage range from 2.0 V to 5.5 V
• Features low static power consumption suitable for battery-powered applications
• Supports high-speed signal transmission with specified propagation delays

Applications

• Mobile communication equipment requiring low-power buffering
• Consumer electronics utilizing CMOS logic interfaces
• Computing products needing high-density bus drivers
• Industrial control systems operating in extreme temperatures

Procurement Notes

Verify the specific ordering suffix against official onsemi documentation to confirm package type and tape/reel specifications. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm availability and authenticity before procurement.

Selection Notes

Select this component when an octal buffer with three-state outputs is required for 2.0 V to 5.5 V systems. The VHCT series offers performance comparable to LS/TTL logic while maintaining CMOS low-power advantages. Consider the TSSOP-20 package for space-constrained designs requiring surface-mount technology.

Part Context

This component is part of the MC74VHC244A series of octal bus buffers. It serves as a critical interface element in digital circuits, facilitating data transfer between different logic domains. The device is designed to replace older TTL-based solutions with more efficient CMOS alternatives, offering improved speed and lower power consumption in modern electronic designs.

Replacement Considerations

Check for direct equivalents such as MC74VHC244DW or NLV74VHC244DTR2G. Verify pinout compatibility and electrical parameters before substitution. Ensure the alternative part meets the same voltage and temperature specifications.