74LVTH32374GX

Overview

The Fairchild Semiconductor 74LVTH32374GX is a low-voltage 32-bit D-type flip-flop featuring 3-STATE outputs, designed for bus-oriented applications. It contains thirty-two non-inverting D-type flip-flops with byte control capabilities. The device utilizes buffered clock (CP) and Output Enable (OE) signals common to each byte, which can be shorted for full 32-bit operation. Fabricated using advanced BiCMOS technology, it supports low-voltage 3.3V VCC applications while providing TTL interface capability to 5V environments. The LVTH variant includes bushold data inputs to eliminate external pull-up resistors for unused inputs.

Feature Summary

• Bushhold data inputs eliminate the need for external pull-up resistors to hold unused inputs
• Input and output interface capability to systems at 5V VCC
• Power Up/Down high impedance provides glitch-free bus loading
• Live insertion/extraction permitted

Applications

• Bus oriented applications
• Byte controlled data storage
• Low-voltage 3.3V VCC systems with 5V interface requirements

Procurement Notes

Verify that the specific suffix 'GX' corresponds to the tape and reel packaging configuration as defined in the official datasheet, distinct from other package variants like TSSOP or SOIC. Confirm that the component matches the LVTH series specifications, particularly the inclusion of bushhold features on data inputs, which differentiates it from the standard LVT version. Ensure the manufacturer identification aligns with Fairchild Semiconductor documentation prior to integration into designs requiring precise timing and voltage level compatibility.

Selection Notes

Select this component when designing systems requiring 32-bit parallel data latching with high-speed operation similar to 5V ABT logic but at lower power dissipation. The choice is appropriate for applications needing live insertion support and robust ESD protection exceeding 2000V human-body model ratings. Consider the bushhold feature if external pull-ups are undesirable for holding unused input states. Verify voltage compatibility between the 3.3V core and 5V system interfaces to ensure signal integrity across the bus architecture.

Part Context

The 74LVTH32374 belongs to the LVT family of low-voltage logic devices produced by Fairchild Semiconductor. This family utilizes BiCMOS technology to achieve performance comparable to traditional 5V logic families while operating at reduced supply voltages. The 32374 specifically denotes a 32-bit octal D-type flip-flop with 3-STATE outputs, intended for high-density memory and buffer applications where byte-level control and high-speed data transfer are critical requirements.

Replacement Considerations

The 74LVT32374 serves as a direct functional substitute within the same family, differing primarily in the absence of bushhold features on the data inputs. Designers must verify if the removal of bushhold functionality requires adding external pull-up resistors to maintain stable input states for unused lines. Other cross-model replacements should be evaluated based on identical pinout compatibility, voltage levels, and output drive capabilities.