CD74HCT245M

Overview

The CD74HCT245M is an octal bus transceiver manufactured by Texas Instruments. It operates with a supply voltage range of 4.5V to 5.5V and features three-state outputs. The device accepts TTL input levels and provides CMOS output levels. It contains eight non-inverting circuits within a single package. The component is designed for surface mount installation in a 20-pin SOIC package. It supports bidirectional data transmission between two buses.

Feature Summary

• Octal configuration providing eight independent non-inverting channels
• Three-state output capability for effective bus isolation
• TTL-compatible input interface ensuring broad logic compatibility
• Bidirectional data transfer architecture for flexible system design

Applications

• Memory module data bus interfacing
• Microprocessor system address and data routing
• Industrial control signal distribution networks

Procurement Notes

Verify the specific manufacturer marking and date code against official Texas Instruments documentation to confirm authenticity. Ensure the package type matches the required 20-SOIC footprint for proper board integration. Check for any RoHS compliance certifications if environmental regulations apply to the final assembly process.

Selection Notes

Select this component when an octal, non-inverting, three-state bus transceiver is required for systems operating at standard 5V logic levels. The HCT series ensures compatibility with TTL inputs while maintaining CMOS output characteristics. Consider the SOIC-20 package dimensions for adequate spacing and thermal management during high-frequency operation.

Part Context

This part belongs to the Texas Instruments 74HCT logic family, which bridges the performance gap between standard CMOS and TTL technologies. The 245 designation specifically indicates an octal bus transceiver function. This series is widely used in digital systems requiring reliable data direction control and bus arbitration capabilities across multiple devices.

Replacement Considerations

The MM74HCT245MTC from onsemi serves as a verified functional substitute. Both parts share identical logical functions, pin configurations, and electrical specifications for direct replacement in compatible designs.