MC74HCT244ADTR2G-Q

Overview

The MC74HCT244ADTR2G-Q is an octal, non-inverting buffer and line driver from the HCT logic series. It features eight outputs with three-state capability, housed in a TSSOP-20 package. The device operates within a supply voltage range of 4.5 V to 5.5 V. Electrical specifications include high-level and low-level output currents of 6 mA each. Static current consumption is specified at 2.9 mA. The component supports a minimum operating temperature of -55°C.

Feature Summary

• Provides octal buffering with three-state output control for bus-oriented systems
• Features non-inverting logic function compatible with TTL voltage levels
• Designed for operation across extended industrial temperature ranges

Applications

• Bus-oriented memory and address drivers
• Clock distribution buffers
• Data register input/output isolation

Procurement Notes

Verify the complete part number including the suffix to ensure correct packaging and quality grade. Confirm that the specific revision matches the design requirements. Check RoHS compliance status as indicated in official documentation. Ensure the supplier provides valid traceability records for automotive or industrial applications requiring this specific qualification level.

Selection Notes

Select this component when an octal buffer with three-state outputs is required for 5V logic systems. The HCT series ensures compatibility with standard TTL inputs while offering CMOS performance. Consider the TSSOP-20 package size for space-constrained PCB layouts. Verify that the 6 mA drive current meets the load requirements of the connected circuitry.

Part Context

This part belongs to the onsemi MC74HCT244 family of octal buffers. It shares functional similarities with other HCT series devices but offers specific three-state control characteristics. The Q suffix typically denotes automotive or qualified reliability standards compared to standard commercial variants. It serves as a key component in digital signal routing and bus management architectures.

Replacement Considerations

Direct substitutes include MM74HCT244MTC for similar functionality in different packaging. Other HCT series octal buffers may serve as alternatives if pinout and electrical parameters align. Verify package dimensions and thermal characteristics before swapping components.