SN74HCS02DR

Inverter Gates Overview

The SN74HCS02DR is a quadruple 2-input NOR gate with Schmitt-trigger inputs manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 6V and supports an ambient temperature range from -40°C to +125°C. The device features balanced CMOS push-pull outputs capable of ±7.8mA drive current at 6V. Typical supply current is 0.1µA, with input leakage current specified at ±100nA. Propagation delay ranges from 6ns to 36ns depending on voltage.

Inverter Gates Feature Summary

• Schmitt-trigger inputs provide hysteresis for noise rejection and tolerance to slow or noisy signals
• Balanced CMOS push-pull outputs ensure similar sourcing and sinking capabilities
• Low power consumption design minimizes static current draw

Inverter Gates Applications

• Alarm or tamper detect circuits
• S-R latch configurations

Inverter Gates Procurement Notes

Verify the specific package suffix 'D' corresponds to the SOIC-14 housing required for your PCB layout. Confirm that the operating environment remains within the specified -40°C to +125°C thermal limits. Ensure input signals do not exceed absolute maximum ratings to prevent clamp diode damage. Check for any recent documentation updates regarding threshold voltage revisions.

Inverter Gates Selection Notes

Select this component when noise immunity is critical due to its Schmitt-trigger architecture. It is suitable for low-power applications requiring wide voltage flexibility between 2V and 6V. Consider the SOIC-14 package dimensions during board design. Verify that output drive requirements stay within the ±7.8mA limit to avoid exceeding absolute maximum ratings.

Inverter Gates Part Context

This device belongs to the SN74HCS series, which combines high-speed CMOS performance with Schmitt-trigger functionality. It serves as a robust logic solution for environments with signal integrity challenges. The 'DR' designation indicates the specific surface-mount packaging variant offered by Texas Instruments for automated assembly processes.

Inverter Gates Replacement Considerations

SN74HCS02PW (TSSOP-14 package)

Inverter Gates FAQ

How does the Schmitt-trigger input affect signal transition rates?

The Schmitt-trigger architecture allows the device to tolerate slow input transitions without causing excessive dynamic current consumption or undefined states.

What is the recommended handling for unused inputs?

Unused inputs must be terminated to either VCC or ground to prevent floating voltages; they should never be left disconnected.