MC74HCT244ADWR2G

Overview

The MC74HCT244ADWR2G is an octal buffer and line driver from the HCT logic family, manufactured by onsemi. It features eight non-inverting inputs and outputs housed in a TSSOP-20 package. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical specifications include a high-level output current of -6 mA and a low-level output current of 6 mA. Static current is specified at 2.9 mA, with a maximum operating power supply current of 75 mA. The component supports surface-mount installation and functions reliably across a temperature range of -55°C to +125°C.

Feature Summary

• Provides octal bus buffering with three-state output capability for efficient data transmission.
• Ensures compatibility with TTL-driven systems through HCT logic level interfacing.
• Supports wide industrial temperature operation for robust performance in demanding environments.

Applications

• Octal bus-oriented memory and address drivers
• Clock drivers and buffer circuits
• TTL-to-CMOS level translation interfaces

Procurement Notes

Verify the specific suffix ADWR2G against the manufacturer's latest datasheet to confirm pinout and electrical characteristics match design requirements. Ensure ESD handling protocols are followed during assembly due to CMOS sensitivity. Confirm that the TSSOP-20 footprint aligns with PCB layout constraints before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring octal buffering with TTL-compatible input levels. It is suitable for applications needing wide temperature stability and three-state control. Compare output drive capabilities against load requirements to ensure signal integrity. Consider package size constraints when choosing between TSSOP and alternative form factors within the same logic family.

Part Context

This part belongs to the MC74HCT244 series of octal buffers and line drivers. It shares functional similarities with other devices in the HCT family but is distinguished by its specific voltage range and package type. The series is designed for high-speed digital applications requiring reliable data transfer between microprocessors and peripheral devices.

Replacement Considerations

Direct substitutes include MC74HCT244ADTR2G-Q and MC74AC244DWR2G, provided voltage and speed requirements are met. Verify pin compatibility and electrical parameters before substitution.