BCM43569PKFFBG

The CM8870PI provides full DTMF receiver capability by integrating both the bandsplit filter and digital decoder functions into a single 18-pin DIP. The filter section uses a switched capacitor technique for both high and low group filters and dial tone rejection. The CM8870 decoder uses digital counting techniques for the detection and decoding of all 16 DTMF tone pairs into a 4-bit code. This DTMF receiver minimizes external component count by providing an on-chip differential input ampli-fier, clock generator, and a latched three state interface bus. The on-chip clock generator requires only a low cost TV crystal or ceramic resonator as an external component.

In addition, it is compatible with RS-422. The driver and receiver outputs feature TRI-STATE capability, for the driver outputs over the entire common mode range of 12V to ?7V. Bus contention or fault situations that cause excessive power dissipation within the device are handled by a thermal shutdown circuit, which forces the driver outputs into the high impedance state. DC specifications are guaranteed over the 0 to 70?C temperature and 4.75V to 5.25V supply voltage range.

The device reduces external components by integrating the USB termination resistors. The?MCP2200?also has 256 bytes of integrated user EEPROM.The?MCP2200?has eight general purpose input/output pins. Four pins have alternate functions to indicate USB and communication status.

The?MCP2551?is a high-speed?Controller Area Network?(CAN), fault-tolerant?device that serves as the interface between a?CAN?protocol controller?and the physical bus. The MCP2551?device provides differential transmit and receive?capability for the CAN protocol controller, and is fully?compatible with the ISO-11898 standard, including 24V?requirements. It will operate at speeds of up to 1 Mb/s.

Typically, each node in a CAN system must have a?device to convert the digital signals generated by a?CAN controller to signals suitable for transmission over?the bus cabling (differential output). It also provides a?buffer between the CAN controller and the high-voltage?spikes that can be generated on the CAN bus by?outside sources (EMI, ESD, electrical transients, etc.).