MT8843

® CMOS MT8843 Calling Number Identification Circuit 2 Preliminary Information Features Compatible with British Telecom (BT) SIN227 & SIN242, Cable Television Association (CTA) TW/P&E/312, and Bellcore TR-NWT-000030 & SR-TSV-002476 Ring and line reversal detection Bellcore "CPE Alerting Signal (CAS)" and BT "Idle State Tone Alert Signal" detection 1200 baud BELL 202 and CCITT V.23 Frequency Shift Keying (FSK) demodulation High input sensitivity Dual mode 3-wire data interface Low power CMOS with powerdown mode Input gain adjustable amplifier Carrier detect status output Uses 3.58 MHz crystal or ceramic resonator BT Calling Line Identity Presentation (CLIP), CTA CLIP, and Bellcore Calling Identity Delivery (CID) systems Feature phones, including Analog Display Services Interface (ADSI) phones Phone set adjunct boxes FAX and answering machines Database query and Computer Telephony Integration (CTI) systems ISSUE 1 February 1995 Ordering Information MT8843AE 24 Pin Plastic DIP MT8843AS 24 Pin SOIC -40 °C to +85 °C Description The MT8843 Calling Number Identification Circuit 2 (CNIC2) is a low power CMOS integrated circuit intended for receiving physical layer signals transmitted according to BT (British Telecom) SIN227 & SIN242, CTA (Cable TV Association) TW/ P&E/312 and Bellcore TR-NWT-000030 & SR-TSV002476 specifications. The CNIC2 provides all the features and functions offered by Mitel’s MT8841 (CNIC), including 1200 baud BELL 202 and CCITT V.23...