SN74HCT02APWR

Inverter Gates Overview

The SN74HCT02APWR is a quadruple 2-input positive-NOR gate from the Texas Instruments SN74HCT02 series. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a wide operating temperature range from -40°C to +85°C. The device features four independent NOR gates, each with two inputs, housed in a TSSOP-14 surface-mount package. Key electrical characteristics include a low-level output current of 4 mA and a high-level output current of -4 mA. The propagation delay is specified at 10 ns, ensuring reliable performance for digital logic applications requiring HCT-compatible input levels.

Inverter Gates Feature Summary

• Integrates four independent 2-input NOR logic gates within a single integrated circuit
• Compatible with standard TTL logic voltage levels due to HCT series design
• Provides robust output drive capability with symmetrical source and sink currents
• Operates reliably across industrial temperature ranges with defined switching speeds

Inverter Gates Applications

• Digital signal processing circuits requiring NOR logic functions
• Microcontroller peripheral interface designs
• General-purpose logic control systems
• Embedded system data path management

Inverter Gates Procurement Notes

Verify the complete part number including the suffix APWR to ensure correct package type (TSSOP-14) and temperature grade. Confirm that the application voltage strictly adheres to the 4.5 V to 5.5 V specification, as HCT devices are not compatible with wider voltage ranges like HC series. Check for RoHS compliance documentation if required by specific manufacturing standards. Ensure ESD handling procedures are followed during assembly due to CMOS sensitivity.

Inverter Gates Selection Notes

Select this component when HCT-compatible input thresholds are required alongside NOR functionality. It serves as a direct replacement for older 74LS02 equivalents in terms of pinout and logic function, though speed and power consumption differ. Consider the TSSOP-14 package for space-constrained PCB layouts compared to larger DIP packages. Verify that the 4.5 V minimum supply voltage aligns with the system power rail before integration.

Inverter Gates Part Context

This component belongs to the SN74HCTxx family, which bridges the gap between low-power CMOS technology and standard TTL logic levels. The HCT series allows CMOS devices to be driven directly by TTL outputs without level shifting. The SN74HCT02 specifically implements NOR logic, contrasting with NAND or AND variants in the same series. It is widely used in legacy system upgrades where TTL compatibility is critical.

Inverter Gates Replacement Considerations

Direct functional substitutes include SN74HC02APWR (verify voltage compatibility), SN74HCT02DR, and SN74HCT02D. Cross-reference with other manufacturers' equivalents such as MC74HCT02ADR or CD74HCT02M. Ensure package pinouts match exactly to avoid rework.