SN74LS244DWE4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS244DWE4 is an octal buffer and line driver featuring three-state outputs, manufactured by Texas Instruments. It belongs to the LS logic series and utilizes CMOS technology within a 20-pin SOIC package. The device operates with a supply voltage range of 4.75 V to 5.25 V and supports a wide operating temperature range from 0°C to +70°C. Key electrical characteristics include a high-level output current of -15 mA and a low-level output current of 24 mA. Static current consumption is specified at 27 mA, while the maximum working power supply current reaches 46 mA.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides eight non-inverting buffer channels for signal transmission
• Features three-state outputs to facilitate bus-oriented systems
• Designed for surface-mount installation in compact layouts

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffer circuits
• Bidirectional bus transceivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix E4 indicates lead-free compliance and RoHS status before procurement. Confirm the package type matches the required SOIC-20 footprint. Check the manufacturer's lifecycle status as legacy components may have limited availability or obsolescence notices. Ensure the operating temperature range meets the environmental requirements of the target application.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing between TTL-compatible inputs and CMOS outputs is required. Consider the higher static current compared to HC/HCT families during power-sensitive designs. Verify that the 5V supply voltage aligns with the system architecture. Evaluate the drive strength requirements against the -15 mA and 24 mA output capabilities.

Buffers, Drivers, Receivers, Transceivers Part Context

This part is part of the standard 74LS logic family, widely used for general-purpose digital buffering. The SN74LS244 variant specifically offers octal configuration with tri-state control, distinguishing it from unidirectional or non-tri-state counterparts. It serves as a foundational component in legacy digital design architectures requiring robust signal isolation and bus management.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LS244DW is the direct equivalent without the E4 suffix. SN74HCT244 variants offer similar functionality with HCT input compatibility.