PCF7961ATT/C00V1,5

RF Transmitter Overview

The PCF7961ATT/C00V1,5 is an obsolete RF transmitter IC from NXP Semiconductors designed for remote keyless entry applications. It operates at frequencies of 315MHz and 434MHz using ASK/FSK modulation. The component is housed in a surface-mount package and was marketed as part of the PCF79 series for security and convenience systems.

RF Transmitter Feature Summary

• Supports ASK and FSK modulation schemes for data transmission
• Designed specifically for remote keyless entry systems
• Operates at standard automotive frequencies of 315MHz and 434MHz

RF Transmitter Applications

• Remote Keyless Entry (RKE) systems
• Automotive immobilizer transponders
• Security and convenience wireless interfaces

RF Transmitter Procurement Notes

This component is officially listed as obsolete by the manufacturer. Procurement should focus on verifying the authenticity of remaining stock from authorized distributors or secondary market suppliers. Due to its discontinued status, long-term supply availability is not guaranteed, and alternative sourcing strategies may be required for production needs.

RF Transmitter Selection Notes

Engineers should consider this part only for legacy system maintenance or repair where specific frequency and modulation compatibility are critical. For new designs, newer NXP solutions within the PCF79xx family or updated generations offering improved integration and support should be evaluated to ensure long-term viability and technical support.

RF Transmitter Part Context

The PCF7961 belongs to the PCF79 series of RF transmitters developed for automotive security applications. This specific variant with the C00V1 suffix indicates a particular configuration within that family, targeting the 315MHz and 434MHz bands commonly used in global RKE markets before more advanced integrated solutions became prevalent.