SN74HCT244PWRG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HCT244PWRG4 is an octal buffer and line driver with three-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V. The device features eight non-inverting inputs and outputs, organized into two independent four-bit sections with separate output enable controls. Key electrical parameters include a maximum static current of 8 µA and a typical propagation delay of 45 ns at 4.5 V. Output drive capabilities are specified as -6 mA for high-level and 6 mA for low-level currents. It is housed in a 20-pin TSSOP package and supports surface-mount installation.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Configured as two independent four-bit buffers or drivers with separate output enable inputs
• Provides three-state outputs that enter a high-impedance state when the output enable signal is high
• Features TTL-compatible input voltage levels and low input current characteristics
• Designed to improve performance and density in bus-oriented receivers and transmitters

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers requiring three-state control
• Clock distribution circuits
• Bus-oriented receiver and transmitter interfaces

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix G4 indicates lead-free and RoHS compliance status according to manufacturer documentation. Confirm the TSSOP-20 package dimensions match your PCB footprint requirements. Ensure the operating temperature range of -40°C to +85°C aligns with your system's thermal environment. Cross-reference the datasheet revision to confirm pinout consistency with existing designs.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal buffer with independent tri-state control is required for 5V logic systems. The HCT technology ensures compatibility with TTL inputs while offering CMOS noise immunity. Consider the 45 ns propagation delay for timing constraints in your application. Verify that the 20-pin TSSOP package fits within the available board space compared to alternative packages like SOIC or SSOP.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4HCT244 family of octal buffers and line drivers. It shares functional similarities with other variants such as the SN74HCT244DWR and SN74HCT244DBR, differing primarily in packaging and manufacturing revisions. The PWRG4 designation specifically identifies the TSSOP package variant with green (RoHS compliant) construction from Texas Instruments.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include SN74HCT244DWR and SN74HCT244DBR, which offer identical logical functionality but utilize different package types such as SOIC or SSOP. When replacing, verify that the physical footprint and pin spacing of the alternative package are compatible with the existing PCB layout.