ZL50232QCG1

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.

Microchip Technology?s MCP2515 is a stand-alone?Controller Area Network (CAN) controller that?implements the CAN specification, version 2.0B. It is?capable of transmitting and receiving both standard?and extended data and remote frames. The MCP2515?has two acceptance masks and six acceptance filters?that are used to filter out unwanted messages, thereby?reducing the host MCU?s overhead. The MCP2515 CAN Controller?interfaces with microcontrollers (MCUs) via an industry?standard Serial Peripheral Interface (SPI).

The MT8870D/MT8870D-1 is a complete DTMF receiver integrating both the band split filter and digital decoder functions. The filter section uses switched capacitor techniques for high and low group filters; the decoder uses digital counting techniques to detect and decode all 16 DTMF tone pairs into a 4-bit code. External component count is minimized by on chip provision of a differential input amplifier, clock oscillator and latched three-state bus interface.