CML Microcircuits (USA) Inc. RF Misc ICs and Modules CMX881E1-TR1K

The CMX881E1-TR1K is a half-duplex audio and signaling processor IC designed for PMR and trunked radio systems. It operates within a supply voltage range of 2.7 to 5.5 volts and features low power consumption, making it suitable for battery-operated devices. The device includes automatic signal type scanning, programmable power-down control, and a robust half-duplex FFSK/MSK modem capable of 1200/2400 bps data transmission with CRC and parity checking. Key functionalities include a tone generator for caller recognition, programmable signal detection thresholds, and a zero 'Talkdown' CTCSS decoder that enhances communication reliability. The CMX881 also supports a C-BUS serial host interface for control and data communication, and it is available in compact SSOP and TSSOP packages. This product meets several industry specifications, including ETS 300 086 and MPT1327, making it a versatile choice for various radio applications.