74VHC374SJ

Overview

The Fairchild Semiconductor 74VHC374SJ is an advanced high-speed CMOS octal D-type flip-flop featuring 3-STATE outputs. Fabricated using silicon gate CMOS technology, it provides high-speed operation with a maximum frequency of 75 MHz at nominal supply voltage. The device operates within a wide voltage range and includes a load capacitance specification of 50 pF. It utilizes a 20-pin TSSOP package (MO-153AC) with a width of 4.40 mm. The component is lead-free, RoHS compliant, and classified under the AHC/VHC series.

Feature Summary

• Octal D-type flip-flop architecture with single 8-bit configuration
• Advanced high-speed CMOS fabrication for rapid signal processing
• Three-state output capability enabling efficient bus-oriented system interfacing

Applications

• Bus-oriented digital systems requiring data storage and buffering
• High-speed logic circuits utilizing CMOS technology
• Interface applications between microprocessors and peripheral devices

Procurement Notes

Verify the current manufacturing status as the 74VHC374SJ is listed as obsolete by onsemi/Fairchild. Confirm availability through authorized distributors or secondary markets. Ensure the specific package variant matches the required 20-lead TSSOP form factor. Check for RoHS compliance documentation if environmental regulations apply to the end product. Validate that substitute components meet identical electrical specifications.

Selection Notes

Select this component for designs requiring octal storage with tri-state outputs in a compact surface-mount package. Consider the VHC series speed characteristics for high-frequency applications up to 75 MHz. Evaluate the 3-STATE feature for bus sharing requirements. Verify power supply compatibility with the standard CMOS operating range. Assess thermal performance within the TSSOP enclosure constraints.

Part Context

The 74VHC374SJ belongs to the VHC (Very High Speed CMOS) logic family, designed for superior speed and low power consumption compared to earlier HC/HCT generations. It serves as an octal flip-flop, storing eight bits of data simultaneously. The SJ suffix typically denotes a specific tape-and-reel packaging option for automated assembly. This part represents a legacy item from Fairchild Semiconductor, now managed by onsemi.

Replacement Considerations

Public confirmed substitutes include the MM74HC374MTC and MM74HC374N. These alternatives offer similar octal D-type flip-flop functionality with 3-STATE outputs. Verify pinout compatibility and electrical parameters before substitution. Note that HC series may have different speed characteristics compared to the VHC series.