SN74HCT32D

Inverter Gates Overview

The SN74HCT32D is a quadruple 2-input positive-OR gate from the Texas Instruments SNx4HCT32 family, housed in a 14-pin SOIC package with dimensions of 8.65 mm by 3.90 mm. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of -40°C to 85°C. The device provides ±4-mA output drive capability at 5 V and features low input current of 1 µA maximum. Typical propagation delay is 13 ns at 5.5 V, while maximum switching delays reach 27 ns at 5.5 V and 30 ns at 4.5 V. Power dissipation capacitance is typically 20 pF.

Inverter Gates Feature Summary

• Performs Boolean OR logic functions using four independent 2-input gates
• Compatible with TTL voltage levels for direct interface with legacy systems
• Capable of driving up to 10 LSTTL loads per output

Inverter Gates Applications

• Digital logic circuits requiring positive-OR functionality
• Signal routing and selection in microprocessor-based systems
• Interface bridging between CMOS and TTL logic families

Inverter Gates Procurement Notes

Verify the specific ordering suffix against the latest TI Package Option Addendum to confirm active production status and moisture sensitivity level. Ensure the selected variant matches the required RoHS compliance and lead finish specifications for your assembly process. Cross-reference the manufacturer part number with distributor databases to validate authenticity and traceability before finalizing procurement orders.

Inverter Gates Selection Notes

Select this component when TTL-compatible inputs are required alongside standard CMOS performance characteristics. The HCT series ensures compatibility with older TTL logic outputs without level shifting. Consider the SOIC package size constraints and thermal resistance values when designing high-density PCB layouts. Verify that the 4.5 V to 5.5 V supply range aligns with the system power architecture.

Inverter Gates Part Context

This device belongs to the SNx4HCT32 family of quadruple 2-input positive-OR gates manufactured by Texas Instruments. The family includes variants such as SN74HCT32DR, SN74HCT32N, and SN74HCT32DBR, offering different packaging options like SSOP, PDIP, and SOP. All variants share identical logical functionality but differ in physical footprint and thermal properties.

Inverter Gates Replacement Considerations

SN74HCT32DR

Inverter Gates FAQ

What is the maximum propagation delay for the SN74HCT32D?

The maximum propagation delay is 27 ns at 5.5 V and 30 ns at 4.5 V under standard test conditions.

Can unused inputs be left floating?

No, all unused inputs must be connected to either VCC or GND to prevent undefined operational states and excessive power consumption.