CD74HCT273EG4

Overview

The CD74HCT273EG4 is an octal D-type flip-flop manufactured by Texas Instruments. It features eight positive-edge triggered D-type flip-flops with a master reset input. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum operating frequency of 16 MHz. It utilizes CMOS technology for high-speed logic operations and includes clamp diodes on inputs to facilitate interfacing with voltages exceeding VCC through current-limiting resistors.

Feature Summary

• Contains eight independent positive-edge triggered D-type flip-flops sharing a common clock and master reset.
• CMOS logic technology ensures low power consumption while maintaining high-speed data processing capabilities.
• Master reset input forces all outputs to a LOW state independently of clock and data inputs.

Applications

• Parallel-to-serial data conversion circuits
• Shift register configurations in digital systems
• General-purpose storage elements in microprocessor-based designs

Procurement Notes

Verify the component marking against official Texas Instruments documentation to confirm authenticity. Ensure the package type matches the specified EG4 designation. Check for compliance with RoHS standards as indicated in the manufacturer's datasheet. Confirm that the operating temperature range aligns with the intended application environment requirements.

Selection Notes

Select this component when an octal D-type flip-flop with TTL-compatible input levels is required. It is suitable for applications needing parallel data storage with synchronous output updates. Consider the 4.5 V to 5.5 V supply voltage constraint during system design. Evaluate the 16 MHz maximum frequency limit against the system clock speed.

Part Context

This part belongs to the HCT logic family, which provides compatibility with standard TTL logic levels while utilizing CMOS technology. The 'E' suffix typically denotes a specific package variant, often related to lead-free or environmental compliance specifications within the Texas Instruments product line. It serves as a fundamental building block for sequential logic circuits.

Replacement Considerations

SN74HCT273PWR: Surface-mount alternative in TSSOP-20 package. SN74HCT273NSR: Surface-mount alternative in SOIC-20 package. CD74HCT273M: Alternative in SOIC-20 package from the same manufacturer series.