SN74HC244PWE4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC244PWE4 is an octal buffer and line driver with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 6V and supports a maximum operating temperature of 125°C. The device features two independent 4-bit buffers, each controlled by a separate output-enable (OE) input. High-current outputs can drive up to 15 LSTTL loads, while typical propagation delay is 11ns at 5V. Maximum static current consumption is 80µA.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides high-drive capability suitable for bus-oriented receivers and transmitters
• Features independent control over two banks of four buffers via separate OE inputs
• Outputs enter a high-impedance state when disabled to prevent bus contention

Buffers, Drivers, Receivers, Transceivers Applications

• Servers
• LED Displays
• Network Switches
• Motor Drivers
• I/O Expanders

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant against the datasheet, as the 'PW' suffix indicates TSSOP-20. Confirm that the extended temperature rating of 125°C aligns with system requirements, noting recent revisions may have updated this parameter from previous versions. Ensure ESD handling precautions are followed during installation.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring high-density 3-state memory address drivers or clock drivers. The dual-bank architecture allows flexible signal routing. Verify that the 2V to 6V supply range matches the target logic levels and that the PCB layout accommodates the fast edge rates to minimize ringing on light loads.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4HC244 family of octal buffers and line drivers. It is designed to improve performance and density in bus-oriented systems. The device utilizes standard CMOS technology, offering balanced output drive and low power consumption compared to older logic families.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct replacements include SN74HC244PWR and SN74HC244PWRE4. Other variants such as SN74HC244DWE4 or SN74HC244ANSR offer different packages but share identical electrical characteristics.

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle unused inputs?

Unused inputs must not be left floating. They should be terminated at VCC or GND using a pull-up or pull-down resistor, typically 10kΩ, to ensure proper operation and prevent excessive power consumption.

What is the function of the OE pins?

Each bank of four buffers has a dedicated Output Enable (OE) pin. When OE is low, the buffers pass non-inverted data. When OE is high, the outputs enter a high-impedance state.