74LVTH574SJ

Overview

The 74LVTH574SJ is an octal D-type flip-flop from the onsemi 74LVTH logic series, manufactured using BiCMOS technology. It features eight positive-edge-triggered D-type flip-flops with three-state outputs in a 20-SOP package. The device operates within a supply voltage range of 2.7V to 3.6V and supports clock frequencies up to 150 MHz. Key electrical parameters include a maximum propagation delay of 5.3 ns at 2.7V and 4.6 ns at 3.3V (with 50pF load). Output drive capabilities provide -32 mA source current and 64 mA sink current. Static input current is 4 pF, while static output current is 190 µA. Operating temperature ranges from -40°C to +85°C.

Feature Summary

• Integrates eight independent positive-edge-triggered D-type flip-flops for parallel data storage.
• Features three-state outputs to facilitate bus-oriented applications without external pull-up resistors.
• Incorporates bus-holding circuitry to maintain signal states during power transitions or undefined conditions.

Applications

• Bus-oriented memory register implementations
• I/O port buffering for low-voltage systems
• Clock delay line circuits

Procurement Notes

Verify component authenticity through authorized distributors due to discontinuation status. Confirm RoHS compliance documentation matches specific manufacturing dates. Check for potential pin-compatible alternatives if original stock is unavailable. Ensure handling procedures align with MSL level 1 requirements. Validate that replacement parts meet identical electrical specifications for critical timing applications.

Selection Notes

Select this component for designs requiring high-speed data latching with strong drive capability in 3.3V environments. The LVTH series offers superior noise immunity compared to standard LVT devices. Consider the SOP-20 package constraints for PCB layout. Evaluate thermal performance given the BiCMOS process characteristics. Verify interface compatibility with downstream logic levels before integration into final assemblies.

Part Context

This part belongs to the 74LVTH574 family, which includes variants like 74LVTH574MTCX and 74LVT574SJX. These components share similar functional architectures but differ in packaging and specific electrical tolerances. The LVTH designation indicates enhanced bus-holding features compared to basic LVT counterparts. This family targets high-performance digital systems requiring reliable data retention under varying power conditions.

Replacement Considerations

SN74LVTH574NSR by Texas Instruments serves as a direct substitute. SN74LVTH574DB is another compatible option. SN74LVTH574ADWR provides alternative sourcing. Verify pinout compatibility before substitution.