SN74HC245NSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC245NSR is an octal bus transceiver from the Texas Instruments HC logic family, housed in a 20-pin SOIC package. It features three-state outputs and operates within a supply voltage range of 2 V to 6 V. The device provides a propagation delay of 22 ns and supports CMOS input and output levels. It delivers a low-level output current of 6 mA and a high-level output current of -6 mA. Designed for surface-mount installation, it functions across an operating temperature range of -40°C to +85°C with a maximum power supply current of 8 µA.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides bidirectional data transmission via eight non-inverting channels controlled by direction and enable pins.
• Features three-state outputs that isolate the bus when disabled to prevent signal contention.
• Compatible with standard CMOS logic families for both input and output interfaces.

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data bus communication between microprocessors and memory modules.
• Buffering and driving external loads on digital systems.
• Level shifting between different voltage domains in mixed-signal circuits.

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'SR' indicates tape-and-reel packaging suitable for automated surface-mount assembly. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor declarations prior to procurement. Ensure the ordering part number matches the required package type and environmental specifications for the target application.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring wide voltage operation and high-speed data transfer. The HC series offers superior speed compared to legacy LS logic while maintaining CMOS compatibility. Consider the SOIC-20 package dimensions for PCB layout constraints. Verify that the 6 mA drive capability meets the load requirements of the connected circuitry.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74HC245 series of octal bus transceivers manufactured by Texas Instruments. It is part of the broader 74HC logic family, designed for high-speed CMOS operations. The NSR variant specifically denotes the small-outline integrated circuit package with reel packaging, distinguishing it from through-hole or tube-packaged equivalents within the same functional family.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct pin-compatible substitutes include SN74HC245N (PDIP) and SN74HC245DWR (SOIC). Cross-vendor equivalents such as MC74HC245A are available but require verification of electrical parameter alignment. Ensure replacement parts maintain the same 3-state output functionality and voltage range.