SN74HC244DWRE4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC244DWRE4 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 features two independent 4-bit buffers with separate output-enable inputs. The device utilizes SOIC-20 packaging and supports surface-mount installation. Key electrical parameters include a maximum static current of 80µA at 6V, high-level output current of -7.8mA, and low-level output current of 7.8mA. Propagation delay is specified as 165ns at 2V, 33ns at 4.5V, and 28ns at 6V under standard load conditions.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides non-inverting data transmission from A inputs to Y outputs when enabled.
• Outputs enter a high-impedance state when the output-enable pin is high.
• Designed for bus-oriented receivers, transmitters, and memory address drivers.

Buffers, Drivers, Receivers, Transceivers Applications

• Servers
• LED Displays
• Network Switches
• Telecom Infrastructure

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'E4' indicates RoHS compliance and green manufacturing status as per Texas Instruments documentation. Confirm the SOIC-20 package dimensions and thermal characteristics match the target PCB layout requirements. Ensure the operating temperature range aligns with system specifications, noting that this variant typically supports industrial temperatures.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring high-drive capability to support up to 15 LSTTL loads. Consider the dual 4-bit organization with independent control lines for efficient bus management. Evaluate the propagation delay specifications against system timing constraints to ensure signal integrity across the required voltage and temperature ranges.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4HC244 family of octal buffers and line drivers. The family is designed to improve performance and density in 3-state memory address drivers and clock drivers. Variants within the series differ primarily in packaging options such as SSOP, TSSOP, and PDIP, while maintaining consistent logical functionality and electrical characteristics.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HC244DWR serves as a direct functional equivalent without the E4 suffix. SN74HC244PWRE4 offers identical logic in a TSSOP-20 package. SN74HC244DBR provides the same functionality in an SSOP-20 package. Verify pin compatibility and thermal performance when substituting different package types.