CD74AC273EG4

Overview

The CD74AC273EG4 is an octal D-type flip-flop manufactured by Texas Instruments, belonging to the AC logic series. It features eight independent D-type flip-flops with a master reset function, packaged in a 20-pin PDIP format for through-hole mounting. The device operates within a supply voltage range of 1.5 V to 5.5 V and supports a wide operating temperature range from -55 °C to +125 °C. Key electrical parameters include a propagation delay of 169 ns, high-level output current of -24 mA, and low-level output current of 24 mA.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops per package
• Master reset functionality for synchronous data control
• CMOS input and output structure compatible with standard logic levels
• Wide operating voltage range supporting 1.5 V to 5.5 V operation

Applications

• Parallel-to-serial data conversion circuits
• Register storage elements in digital systems
• Timing delay applications requiring precise clock synchronization
• Buffering interfaces between different logic families

Procurement Notes

Verify the EG4 suffix indicates RoHS compliance and specific manufacturing lot details when sourcing. Confirm the PDIP-20 package type matches your PCB footprint requirements. Ensure the supplier provides official datasheets for the CD74AC273E family to validate electrical characteristics against your design specifications before finalizing procurement orders.

Selection Notes

Select this component when an octal register with a global reset is required in through-hole designs. The AC series offers a balance of speed and power consumption suitable for general-purpose logic applications. Consider the 169 ns propagation delay for timing constraints. Verify that the 1.5 V minimum supply voltage aligns with your system's power architecture compared to higher-voltage alternatives.

Part Context

This part belongs to the CD74AC273 family of octal D-type flip-flops. The 'G4' suffix typically denotes environmental compliance, specifically RoHS standards, while maintaining identical electrical and functional specifications to the standard CD74AC273E variant. It serves as a direct replacement for non-compliant versions in new designs requiring regulatory adherence.

Replacement Considerations

• CD74AC273E

FAQ

Does the EG4 suffix change the electrical performance?

No, the EG4 suffix indicates RoHS compliance and does not alter the electrical or functional specifications compared to the standard CD74AC273E.

What is the maximum operating supply voltage?

The maximum operating supply voltage is 5.5 V.