SN74BCT2245DW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74BCT2245DW is an octal bus transceiver and line/MOS driver designed for asynchronous communication between data buses. It features a 20-SOIC package with TTL input and output levels. Key electrical parameters include a propagation delay of 4.5 ns, low-level output current of 64 mA, and high-level output current of -32 mA. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a temperature range from -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides bidirectional data transmission between two 8-bit buses.
• Includes series damping resistors to reduce signal reflections.
• Features three-state outputs to isolate the bus when disabled.

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous communication between data buses
• Memory and memory mapping
• Clock drivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'DW' corresponds to the SOIC-20 package and tube packaging configuration. Confirm that the component meets RoHS compliance requirements for your target market. Ensure the operating temperature range aligns with your system's environmental specifications before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring robust signal integrity over longer traces due to integrated damping resistors. It is suitable for applications needing high drive capability (64 mA) and fast switching speeds (4.5 ns). Consider the 20-SOIC package constraints for PCB layout and thermal management in dense designs.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to Texas Instruments' SN74BCT logic family, which combines BiCMOS technology for high speed with CMOS low power consumption. The BCT series is optimized for driving heavy capacitive loads and providing clean signal transitions in digital systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for pin-compatible alternatives such as the SN74ABT2245DW or SN74LVTH2245DW. Verify that substitute parts match the required voltage levels and current drive capabilities. Ensure any replacement maintains the same package type and thermal characteristics.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the function of the series damping resistors?

The series damping resistors are integrated into the device to reduce signal reflections and ringing on the bus lines, improving signal integrity during high-speed transitions.

Can this device be used for level shifting?

No, the SN74BCT2245DW is designed for TTL-to-TTL interfaces. It does not support level shifting between different voltage domains.