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MT8841AS Datasheet(PDF) 1 Page - Mitel Networks Corporation |
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MT8841AS Datasheet(HTML) 1 Page - Mitel Networks Corporation |
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1 / 10 page  5-11 ® Features • 1200 baud BELL 202 and CCITT V.23 Frequency Shift Keying (FSK) demodulation • Compatible with Bellcore TR-NWT-000030 and SR-TSV-002476 • High input sensitivity: -36dBm • Simple serial 3-wire data interface eliminating the need for a UART • Power down mode • Internal gain adjustable amplifier • Carrier detect status output • Uses 3.579545 MHz crystal or ceramic resonator • Single 5V power supply • Low power CMOS technology Applications • Calling Number Delivery (CND), Calling Name Delivery (CNAM) and Calling Identity on Call Waiting (CIDCW) features of Bellcore CLASSSM service • Feature phones • Phone set adjunct boxes • FAX machines • Telephone Answering machines • Database query systems Description The MT8841 Calling Number Identification Circuit (CNIC) is a CMOS integrated circuit providing an interface to various calling line information delivery services that utilize 1200 baud BELL 202 or CCITT V.23 FSK voiceband data transmission schemes. The CNIC receives and demodulates the signal and outputs data into a simple 3-wire serial interface. Typically, the FSK modulated data containing information on the calling line is sent before alerting the called party or during the silent interval between the first and second ring using either CCITT V.23 recommendations or Bell 202 specifications. The CNIC accepts and demodulates both CCITT V.23 and BELL 202 signals. Along with serial data and clock, the CNIC provides a data ready signal to indicate the reception of every 8-bit character sent from the Central Office. The received data can be processed externally by a microcontroller, stored in memory, or displayed as is, depending on the application. Ordering Information MT8841AE 16 Pin Plastic DIP MT8841AS 16 Pin SOIC MT8841AN 20 Pin SSOP -40 °C to +85 °C Figure 1 - Functional Block Diagram CLASSSM is a service mark of Bellcore GS IN- IN+ CAP VRef DATA DR DCLK CD PWDN OSC1 OSC2 VSS VDD IC1 IC2 Receive Bandpass Filter Bias Generator FSK Demodulator Data and Timing Carrier Detector Clock Generator Recovery to other circuits - + ISSUE 4 May 1995 MT8841 Calling Number Identification Circuit CMOS |
Similar Part No. - MT8841AS |
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Similar Description - MT8841AS |
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