SN74BCT245DW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74BCT245DW is an octal bus transceiver manufactured by Texas Instruments, belonging to the BCT logic series. It features eight non-inverting channels with three-state outputs, designed for bidirectional data transfer between two buses. The device operates within a supply voltage range of 4.5 V to 5.5 V and utilizes TTL input and output levels. Packaged in a 20-pin SOIC (D) format, it supports surface-mount installation. Key electrical characteristics include a propagation delay of approximately 6.6 ns, a low-level output current capability of 48 mA, and a high-level output current of -12 mA. It functions reliably across an operating temperature range of 0°C to +70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides bidirectional data transmission via eight independent non-inverting channels
• Features three-state outputs that allow effective isolation of the bus when disabled
• Supports TTL-compatible input and output voltage levels for system integration

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data bus driving applications
• Memory and memory interface systems
• High-performance consumer electronics

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant against the datasheet, as the 'DW' suffix indicates a 20-pin SOIC package. Confirm the operating temperature grade matches the application requirements, as commercial grades typically range from 0°C to +70°C. Ensure the design accounts for the specified supply voltage limits of 4.5 V to 5.5 V to maintain signal integrity and prevent device damage during operation.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal, non-inverting bus transceiver with three-state control is required for TTL-to-TTL level interfacing. The BCT series offers improved speed compared to standard LS logic while maintaining compatibility. Consider the 20-pin SOIC footprint for PCB layout constraints. Verify that the load capacitance and drive current requirements fall within the specified 48 mA low-level and -12 mA high-level output capabilities.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the Texas Instruments SN74BCT family, which combines the speed of advanced bipolar technology with CMOS power consumption. The SN74BCT245 is functionally similar to other octal bus transceivers like the SN74LS245 but provides faster switching speeds. It serves as a critical interface component in digital systems requiring reliable bidirectional data flow between microprocessors and peripheral devices.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for pin-compatible alternatives such as the SN74BCT245N or SN74BCT245NSR if different packaging is needed. Verify functional equivalence with SN74LS245 variants if upgrading from older logic families, noting the speed differences.