74VHC74TTR

Overview

The STMicroelectronics 74VHC74TTR is a dual D-type flip-flop featuring preset and clear functions, manufactured in the 74VHC logic series. It operates within a supply voltage range of 2 V to 5.5 V and utilizes a 14-TSSOP surface-mount package. The device provides high-level and low-level output currents of 8 mA each, with a maximum static current of 2 µA. Propagation delay is specified at 15.4 ns. It supports an operating temperature range from -55°C to 125°C and complies with RoHS3 standards.

Feature Summary

• Dual D-type flip-flop architecture with dedicated preset and clear control inputs for precise state management.
• High-speed CMOS technology enabling operation across a wide voltage range from 2 V to 5.5 V.
• Robust output drive capability supporting 8 mA source and sink currents for reliable signal transmission.
• Extended industrial temperature rating ensuring stable performance in demanding thermal environments.

Applications

• Data storage and register circuits requiring dual-bit memory elements.
• Synchronous digital systems utilizing clocked data transfer mechanisms.
• State machine implementations in embedded control applications.
• Timing and sequencing logic in consumer electronic devices.

Procurement Notes

Verify component authenticity through authorized distribution channels due to obsolete status. Confirm package integrity and pin alignment against the 14-TSSOP specification. Ensure compliance with RoHS3 directives for environmental regulations. Validate electrical parameters against datasheet limits before integration into final assemblies.

Selection Notes

Select this component for applications requiring dual D-type flip-flops with preset and clear functionality. Consider the 74VHC series for high-speed performance and wide voltage compatibility. Evaluate the 14-TSSOP package for surface-mount assembly requirements. Verify temperature range suitability for specific operational environments.

Part Context

This component belongs to the 74VHC family of high-speed CMOS logic devices produced by STMicroelectronics. The 74VHC series offers performance comparable to TTL while maintaining low power consumption typical of CMOS technology. The 74VHC74 variant specifically integrates two independent D-type flip-flops within a single compact package.

Replacement Considerations

Public confirmed substitute part numbers include NLV74VHC74DTR2G from onsemi. Verify pinout compatibility and electrical specifications when transitioning to alternative manufacturers.