SN74HCS32DR

Inverter Gates Overview

The SN74HCS32DR is a quadruple 2-input OR gate featuring Schmitt-trigger inputs, manufactured by Texas Instruments in a 14-pin SOIC package. 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 provides balanced CMOS push-pull outputs capable of ±7.8 mA drive current at 6 V. Electrical characteristics include typical propagation delays ranging from 6 ns to 36 ns depending on voltage, with low power consumption indicated by a typical supply current of 1 µA.

Inverter Gates Feature Summary

• Schmitt-trigger inputs provide high noise rejection and tolerance for slow or noisy input signals without requiring specific transition rates.
• Balanced CMOS push-pull outputs deliver symmetric sourcing and sinking capabilities for reliable signal driving.
• Low power consumption design minimizes static current draw across the operating voltage range.

Inverter Gates Applications

• Monitoring error signals using fewer inputs
• Combining active-low enable signals
• Directly controlling fan driver enable pins via combined overheat signals

Inverter Gates Procurement Notes

Verify the ordering suffix 'DR' corresponds to the SOIC-14 package and Large T&R carrier configuration. Confirm the lead finish is NIPDAU (Nickel/Palladium) and the RoHS status is compliant. Ensure the operating temperature grade matches the specified -40°C to +125°C range for your application environment.

Inverter Gates Selection Notes

Select this component when Schmitt-trigger hysteresis is required to filter noise on long traces or slow edges. The wide 2 V to 6 V supply range accommodates various logic levels. Ensure output capacitive loads remain below 50 pF for optimal switching performance and verify that the SOIC-14 footprint fits the PCB layout constraints.

Inverter Gates Part Context

This part belongs to the SN74HCS32 family of quadruple 2-input OR gates. The 'D' suffix specifically denotes the SOIC (Small Outline Integrated Circuit) 14-pin package variant. Other available packages in the series include TSSOP, WQFN, and SOT-23-THIN, offering flexibility for different board space and thermal requirements.

Inverter Gates Replacement Considerations

SN74HCS32PW (TSSOP-14), SN74HCS32BQA (WQFN-14), SN74HCS32DYY (SOT-23-THIN-14). These variants share identical electrical specifications and pin functions but differ in physical package dimensions and thermal characteristics.

Inverter Gates FAQ

How do Schmitt-trigger inputs benefit this device?

They provide hysteresis that makes the device tolerant to slow or noisy input signals, eliminating the need for strict input transition rate requirements.

What is the recommended handling for unused inputs?

Unused inputs must not be left floating; they should be terminated to either VCC or ground to prevent undefined operational states.