PCF7961XTT/D1AC09J

RF Transmitter Overview

The PCF7961XTT/D1AC09J is a remote keyless entry integrated circuit from the PCF7961 series, manufactured by NXP Semiconductors. It operates at UHF frequencies of 315 MHz and 434 MHz. The device features an integrated antenna and includes 512 bytes of EEPROM for data storage. It is housed in a 20-TSSOP package with a width of 4.40 mm (0.173 inches). This component is designed for high-efficiency signal transmission while maintaining minimal power consumption.

RF Transmitter Feature Summary

• Integrated UHF transmitter optimized for high efficiency and low power consumption
• Includes built-in antenna functionality for compact design
• Features 512 bytes of non-volatile EEPROM for secure data retention

RF Transmitter Applications

• Remote keyless entry systems
• Automotive immobilizer transponders
• Security and convenience applications

RF Transmitter Procurement Notes

Verify the specific suffix D1AC09J against official NXP documentation to confirm frequency band and packaging details. Ensure compatibility with system requirements for 315/434 MHz operation. Confirm that the TSSOP-20 package dimensions meet PCB layout constraints. Check RoHS compliance status through manufacturer datasheets before integration.

RF Transmitter Selection Notes

Select this component for applications requiring integrated RF transmission and EEPROM storage in a small form factor. Consider the 20-TSSOP package size for space-constrained designs. Evaluate the need for 315 MHz or 434 MHz operation based on regional regulatory standards. Ensure the system architecture supports the specific interface requirements of the PCF7961 series.

RF Transmitter Part Context

This part belongs to the PCF7961 family of remote keyless entry ICs from NXP Semiconductors. The family includes variants with different suffixes indicating specific packaging or configuration options. These components are widely used in automotive security systems, combining transponder functionality with remote control capabilities in a single chip solution.

RF Transmitter Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.