SN74HC245PWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC245PWR is an octal bus transceiver from the Texas Instruments HC logic series, housed in a 20-pin TSSOP package. It features tri-state outputs and supports bidirectional data transfer between two buses. The device operates within a supply voltage range of 2 V to 6 V and maintains a maximum power supply current of 8 µA. Electrical characteristics include a propagation delay of 22 ns, with low-level and high-level output currents rated at 6 mA and -6 mA respectively. It functions reliably across an operating temperature range from -40 °C to +85 °C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides eight channels for asynchronous bidirectional data communication between buses.
• Utilizes direction control (DIR) input to manage data flow direction without external timing requirements.
• Includes output enable (OE) input to disable outputs and effectively isolate the bus.
• Features CMOS input and output levels compatible with standard digital logic systems.

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous bidirectional data communication between microprocessors and memory devices.
• Driving bus lines or providing loads for multiple TTL-compatible inputs.
• System isolation via controlled output disabling during bus contention or idle states.

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific revision code and RoHS compliance status directly against the manufacturer's latest datasheet before integration. Confirm that the TSSOP-20 package dimensions match your PCB footprint design constraints. Ensure the selected component variant aligns with your required operating temperature range and voltage specifications for reliable system performance.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal width is required for bidirectional data paths within the HC logic family. It is suitable for applications needing wide bus interfaces with moderate speed requirements up to 22 ns delay. Consider alternative packages like SOIC if surface area allows, or verify pin compatibility if replacing legacy DIP versions in existing designs.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74HC245 family of octal bus transceivers manufactured by Texas Instruments. It shares functional similarities with other variants such as the SN74HC245DWRG4, which differs primarily in its SOIC-20 packaging. The HC series is characterized by CMOS technology, offering low power consumption and broad voltage operation compared to older LS or ALS logic families.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The SN74HC245PWRE4 is a confirmed equivalent substitute part number for this component.