CD74HCT574QM96G4Q1

Overview

The CD74HCT574QM96G4Q1 is an automotive-grade octal D-type flip-flop with three-state outputs manufactured by Texas Instruments. It belongs to the CD74HCT series, utilizing high-speed CMOS technology compatible with standard TTL logic levels. The device operates within a supply voltage range of 4.5 V to 5.5 V and features a 16-pin SOIC package. Key electrical parameters include a maximum propagation delay of 40 ns at 4.5 V with 50 pF load, a maximum static current of 8 µA, and output drive capabilities of ±4 mA. It supports a wide operating temperature range from -55°C to +125°C and holds AEC-Q100 qualification for automotive applications.

Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards
• Octal configuration providing eight independent D-type flip-flops per unit
• Three-state outputs enabling direct bus line interfacing without external buffers
• High-speed CMOS construction ensuring compatibility with 5 V TTL logic systems

Applications

• Automotive data acquisition systems requiring robust signal latching
• Industrial control interfaces for managing multiple digital input states
• Communication equipment utilizing serial-to-parallel data conversion architectures
• Test and measurement instrumentation involving high-reliability memory elements

Procurement Notes

Verify that the specific suffix G4 indicates RoHS compliance and the Q1 designation confirms automotive qualification status. Confirm the SOIC-16 package dimensions match your PCB footprint requirements. Ensure the 4.5 V minimum supply voltage aligns with your system power rails. Check for any specific handling instructions related to moisture sensitivity level classification during assembly processes.

Selection Notes

Select this component when automotive durability and high-speed performance are required simultaneously. The HCT logic family ensures seamless integration with existing 5 V TTL infrastructure. Consider the three-state output feature if bus sharing is necessary to reduce component count. Evaluate the 40 ns propagation delay against your system timing constraints to ensure adequate setup and hold times are met for reliable operation.

Part Context

This part is a specialized variant within the broader CD74HCT574 product line, tailored specifically for harsh automotive environments. While functionally identical to the standard commercial CD74HCT574, it undergoes stricter manufacturing controls and testing protocols. The inclusion of the Q1 suffix distinguishes it as an automotive-certified device, offering enhanced longevity and stability compared to general-purpose industrial counterparts in demanding thermal and vibration conditions.

Replacement Considerations

Direct substitutes include the CD74HCT574M96G4 for non-automotive applications or the CD74HC574M96G4 for lower voltage flexibility. Verify pinout compatibility before swapping. Note that HC variants may require different supply voltage management. Ensure any replacement maintains the required AEC-Q100 qualification if automotive reliability remains a critical design constraint.