CD74FCT273E

Overview

The CD74FCT273E is an octal D-type flip-flop manufactured by Texas Instruments within the FCT logic series. It features BiCMOS technology and TTL-compatible inputs with CMOS outputs in a non-inverting configuration. The device operates on a single supply voltage ranging from 4.75 V to 5.25 V. Key electrical parameters include a propagation delay of 7 ns, a high-level output current of -15 mA, and a low-level output current of 48 mA. It is housed in a PDIP-20 package designed for through-hole mounting and supports a minimum operating temperature of 0°C.

Feature Summary

• Octal D-type flip-flop architecture providing eight independent data storage elements
• BiCMOS construction ensuring TTL input compatibility alongside CMOS output performance
• Non-inverting signal polarity maintaining logical state consistency between input and output

Applications

• Parallel data storage and buffering in digital systems
• Interface bridging between TTL logic sources and CMOS loads
• Register implementation in microprocessor-based circuit designs

Procurement Notes

Verify the specific suffix 'E' corresponds to the PDIP-20 through-hole package variant when sourcing. Confirm that the required operating environment remains above 0°C, as this specification defines the lower thermal limit for this component grade. Ensure supply chain documentation aligns with the FCT series technical standards provided by the manufacturer.

Selection Notes

Select this component when designing circuits requiring fast switching speeds with a 7 ns propagation delay. Choose this part if the system demands high drive capability with a 48 mA low-level output current. This model is appropriate for applications needing direct TTL interface compatibility without additional level-shifting components.

Part Context

This device belongs to the Texas Instruments FCT (Fast CMOS) family, which bridges the speed advantages of ECL with the power efficiency of CMOS. The CD74FCT273E specifically addresses the need for high-density octal registers in legacy and mixed-signal environments where TTL input thresholds are standard.

Replacement Considerations

The CY74FCT273T series offers surface-mount alternatives such as the CY74FCT273ATQCT in SSOP packages. For wider temperature ranges, consider the AC series variants like the CD74AC273E.