PT8A2641PE

Sensor And Detector Interfaces Overview

The PT8A2641PE is a CMOS LSI chip designed for automatic PIR lamp control, operating at a typical voltage of 5V with an average supply current of 120µA. It features a two-stage operational amplifier for filtering and a built-in noise rejection circuit. The device includes an on-chip regulator providing approximately 3.6V output. It supports adjustable output duration via external RC components connected to the OSCD pin. The chip offers selectable operating modes (ON/AUTO/OFF) through the MODE pin and provides override functionality. It is compatible with AC 220V/50Hz and 110V/60Hz power lines. The PT8A2641PE specifically outputs pulses to drive TRIACs and is housed in a 16-pin DIP package.

Sensor And Detector Interfaces Feature Summary

• Integrated two-stage operational amplifier and comparator for signal processing
• Built-in noise rejection circuitry and zero-crossing detection
• Selectable operating modes including ON, AUTO, and OFF states
• Adjustable output timing controlled by external resistor-capacitor network

Sensor And Detector Interfaces Applications

• Automatic PIR lamp control systems
• Two-wire configuration TRIAC driver circuits
• Lighting control modules for AC mains operation

Sensor And Detector Interfaces Procurement Notes

Verify component authenticity against Diodes Incorporated or Pericom Semiconductor specifications. Confirm the package type matches the required PCB footprint. Ensure the ordering suffix indicates lead-free compliance if environmental regulations apply. Cross-reference the datasheet revision date with manufacturing records to ensure design consistency.

Sensor And Detector Interfaces Selection Notes

Select this model when a pulse output is required for TRIAC driving rather than a continuous level output. Verify that the application utilizes a two-wire configuration suitable for the specific output stage. Consider the external RC component requirements for setting the desired timer duration and system frequency during the initial design phase.

Sensor And Detector Interfaces Part Context

This component belongs to the PT8A264X series of PIR sensor light switch controllers manufactured by Diodes Incorporated, formerly Pericom Semiconductor. The series encompasses variants with different output types, such as relay drivers and additional control pins. The PT8A2641PE represents the specific variant optimized for TRIAC applications within this family.

Sensor And Detector Interfaces Replacement Considerations

PT8A2642PE: Offers relay drive output instead of TRIAC pulses.