SN74HCS21QDRQ1

Inverter Gates Overview

The SN74HCS21QDRQ1 is an automotive-grade dual 4-input AND gate with Schmitt-trigger inputs, manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports an ambient temperature range from -40°C to +125°C. The device features balanced CMOS push-pull outputs capable of ±7.8 mA drive current at 5 V. Propagation delay ranges from 8 ns to 52 ns depending on voltage. It includes HBM ESD Level 2 and CDM Level C6 ratings.

Inverter Gates Feature Summary

• Schmitt-trigger inputs provide low power noise rejection for slow or noisy signals
• Balanced CMOS push-pull outputs allow similar sourcing and sinking currents
• AEC-Q100 qualified for automotive applications across extended temperature grades

Inverter Gates Applications

• Combining power good signals
• Enabling digital signals
• Driving system controller reset pins when all inputs are high

Inverter Gates Procurement Notes

Verify the specific package type (SOIC-14) and suffix (QDRQ1) against the orderable addendum in the datasheet. Confirm AEC-Q100 qualification status and temperature grade requirements match the target application environment. Ensure input termination strategies are defined for unused channels to prevent undefined operational states.

Inverter Gates Selection Notes

Select this component when designing automotive logic circuits requiring four-input AND functionality with Schmitt-trigger tolerance. It is suitable for systems operating between 2 V and 6 V where noise immunity is critical. Consider the SOIC-14 package dimensions and thermal resistance values if board space or heat dissipation is constrained relative to other logic families.

Inverter Gates Part Context

This part belongs to the SN74HCS21-Q1 family, which includes variants like SN74HCS21QPWRQ1 in TSSOP packaging. It is distinct from standard catalog versions by its automotive qualification and specific ordering suffixes indicating production status and material finishes.

Inverter Gates Replacement Considerations

SN74HCS21QPWRQ1 offers identical electrical performance in a TSSOP-14 package instead of SOIC-14.