SN74HCT245DW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HCT245DW is an octal bus transceiver manufactured by Texas Instruments, featuring three-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and supports bidirectional data transmission controlled by a direction input. The device utilizes HCT CMOS technology, ensuring TTL-compatible inputs and CMOS outputs. It is housed in a 20-pin Small Outline Integrated Circuit (SOIC) package with a standard width of 0.3 inches. The component is designed for industrial temperature ranges, typically operating from -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides eight-bit bidirectional data transfer capability between two buses.
• Features three-state outputs that allow connection to system data lines without electrical interference when disabled.
• Incorporates direction control logic to manage the flow of data between port A and port B.

Buffers, Drivers, Receivers, Transceivers Applications

• Mobile applications requiring high-speed data bus interfacing.
• Clock driving and buffer functions in digital circuits.
• Bi-directional bus architecture implementation in computing systems.

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'E4' if lead-free compliance is required, as the base part number may denote standard packaging. Confirm the package variant matches the design footprint, as SOIC dimensions are critical for PCB layout. Ensure the operating temperature range aligns with the environmental conditions of the final assembly. Cross-reference the datasheet revision date to confirm current electrical characteristics and pinout configurations before finalizing procurement specifications.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a wide voltage tolerance and TTL compatibility are necessary for mixed-signal environments. The HCT series offers superior noise immunity compared to standard HC logic. Consider the package size constraints and thermal dissipation requirements of the application. Evaluate the propagation delay specifications against the system clock speed to ensure signal integrity is maintained across the eight-bit bus width.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SNx4HCT245 family of octal bus transceivers. It serves as a standard interface solution for connecting microprocessors to memory or peripheral devices. The HCT logic level ensures compatibility with older TTL-based systems while leveraging modern CMOS power efficiency. It is widely used in embedded systems where reliable bi-directional data transfer is essential.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The SN74HCT245DWE4 is a verified equivalent offering identical functionality with RoHS-compliant manufacturing processes. Other variants within the SN74HCT245 family share the same logical operation but may differ in package type or temperature rating. Verify pin-to-pin compatibility before substituting any alternative bus transceiver models.