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MC145406P Datasheet(PDF) 7 Page - LANSDALE Semiconductor Inc. |
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MC145406P Datasheet(HTML) 7 Page - LANSDALE Semiconductor Inc. |
7 / 10 page www.lansdale.com Page 7 of 10 Issue A LANSDALE Semiconductor, Inc. ML145406 17 20 k Ω NC DO3 10 µF RTLA** DTMF INPUT RDSI 20 k Ω CDSI 6 9 1 15 8 3.579 MHz 3 11 5 14 2 13 7 12 4 19 10 18 16 VDD TLA DSI Xin Xout CD TxD TxA RxA2 RxA1 ExI FB VAG CDT GND CDA LB SQT RxD RTx 600 + 10 k Ω TIP 600:600 RING VDD VDD BYPASS CFB MODE + 5 V 1 ML145442/3 10 k Ω 10 k Ω CCDA** 0.1 µF CCDT VSS BYPASS 14 15 12 13 10 11 89 6 7 4 5 2 3 8 2 3 7 EIA 232–E DB–25 CONNECTOR NC NC VSS GND DI3 DO2 DI2 DO1 DI1 VDD VCC ML145406 Tx1 Rx1 Tx2 Rx2 Tx3 Rx3 16 – 5 V *Line protection circuit **Refer to the applications information for values of CCDA and RTLA 0.1 µF 0.1 µF 0.1 µF 0.1 µF 0.1 µF 10 k 10 k Ω * 0.1 µF 0.1 µF 0.1 µF Figure 5. 5–V 300–Baud Modem with EIA 232–E Interface |
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