mc145443dw Freescale Semiconductor, Inc, mc145443dw Datasheet
mc145443dw
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mc145443dw Summary of contents
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... MC145442 MC145443 P SUFFIX PLASTIC DIP 20 CASE 738 1 DW SUFFIX SOG PACKAGE 20 CASE 751D 1 ORDERING INFORMATION MC145442P Plastic DIP MC145443P Plastic DIP MC145442DW SOG Package MC145443DW SOG Package PIN ASSIGNMENT DSI 1 20 TLA Exl CDT 4 17 TxA RxD ...
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RxA2 – AAF 16 RxA1 + MODE MODE CONTROL 14 SQT 11 TxD MODULATOR 20 TLA 8 X out CLOCK OSCILLATOR 9 DIVIDER Refer to the FB pin description. ABSOLUTE MAXIMUM RATINGS (Voltages ...
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DC ELECTRICAL CHARACTERISTICS Characteristic High–Level Input Voltage Low–Level Input Voltage High–Level Output Voltage Low–Level Output Voltage ...
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MHz 0. TLA X out TLA V DD TxD 17 TxA 15 RxA2 MC145442 600 MC145443 600 16 RxA1 RxD TEST CDT FB OUTPUT TEST 4 10 INPUT 0 CDT Figure 1. ...
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RxA2, RxA1 Receive Carrier (Pins 15, 16) The receive carrier is the FSK input to the demodulator through the receive band–pass filter. RxA1 is the non–invert- ing input and RxA2 is the inverting input of the receive hybrid (duplexer) operational ...
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GENERAL DESCRIPTION The MC145442 and MC145443 are full–duplex low–speed modems. They provide a 300–baud FSK signal for bidirec- tional data transmission over the telephone network. They can be operated in one of four basic configurations as deter- mined by the ...
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RxA2 – AAF 16 + RxA1 11 TxD MODULATOR (a) Originate/Channel 1 Mode (MODE = High Low) 15 RxA2 – AAF 16 RxA1 + 11 TxD MODULATOR (b) Answer/Channel 2 Mode (MODE = Low Low) ...
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APPLICATIONS INFORMATION CARRIER DETECT TIMING ADJUSTMENT The value of a capacitor, C CDT at CDT (Pin 4) determines how long a received modem signal must be present above the minimum threshold level before CD (Pin 3) goes low. The C ...
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HYBRID AMP 16 RxA1 V ref 7 V CDA 1.2 V THRESHOLD CDA CONTROL C CDA 0.1 F MOTOROLA AUTO–NULLED COMPARATOR 6 ms RETRIGGERABLE ONE–SHOT SAMPLING CLOCK Figure 5. Carrier Detect Circuit MODULATOR OUTPUT ...
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TLA C DSI R DSI R TLA DTMF 1 DSI INPUT 0.1 F TxA 15 RxA2 R Tx 600 TIP RxA1 * RING 18 Exl ...
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SEATING PLANE –A– –B– 20X 0.010 (0.25 18X K MOTOROLA PACKAGE DIMENSIONS P SUFFIX PLASTIC DIP CASE 738– ...
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Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of ...