MC145443P Freescale Semiconductor, MC145443P Datasheet
MC145443P
Specifications of MC145443P
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MC145443P Summary of contents
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... Capable of Driving – 9 dBm into a 600 REV 1 8/95 Load 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 ...
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... Freescale Semiconductor, Inc. 15 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 Referenced Rating Supply Voltage DC Input Voltage DC Output Voltage Clamp Diode Current, per Pin DC Output Current, per Pin ...
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... Freescale Semiconductor, Inc. DC ELECTRICAL CHARACTERISTICS Characteristic High–Level Input Voltage Low–Level Input Voltage High–Level Output Voltage Low–Level Output Voltage Input Current Quiesent Supply Current ( crystal = 3.579 MHz) Power–Down Supply Current Input Capacitance V AG Output Voltage ( CDA Output Voltage ( ...
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... Freescale Semiconductor, Inc. 3.579 MHz 0. TLA X out 20 TLA TxA 15 RxA2 MC145442 600 MC145443 600 16 RxA1 TEST CDT OUTPUT TEST 4 10 INPUT 0 CDT Figure 1. AC Characteristics Evaluation Circuit PIN DESCRIPTIONS V DD Positive Power Supply (Pin 6) This pin is normally tied to 5 Negative Power Supply (Pin 12) This pin is normally tied ...
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... Freescale Semiconductor, Inc. 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 amplifier. LB Analog Loopback (Pin 2) When a high level is applied to this pin (SQT must be low), the analog loopback test is enabled ...
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... Freescale Semiconductor, Inc. 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 state of MODE (Pin 13) and LB (Pin 2). The normal (non– ...
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... Freescale Semiconductor, Inc. 15 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) 15 RxA2 – RxA1 11 TxD (c) Originate/Channel 1 Mode and Analog Loopback State (MODE = High Low) 15 RxA2 – 16 RxA1 ...
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... Freescale Semiconductor, Inc. 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 CDT capacitor also determines how long the CD pin stays low after the received modem signal goes below the mini- mum threshold ...
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... Freescale Semiconductor, Inc. ac AUTO–NULLED HYBRID AMP COMPARATOR 16 RxA1 V ref 7 V CDA 1.2 V THRESHOLD CDA CONTROL C CDA 0 DSI Figure 6. Line Driver Using the DSI Input 6 ms RETRIGGERABLE ONE–SHOT SAMPLING CLOCK Figure 5. Carrier Detect Circuit MODULATOR OUTPUT DSI ExI – CDT C CDT 0 ...
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... Freescale Semiconductor, Inc. 20 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 0 CDT 0 CDT 0 Line Protection Circuit Figure 7. Typical MC145442/MC145443 Applications Circuit MC145443 0 3.58 8 MHz X out CD TxD MC145442/3 RxD 10 k SQT MODE ...
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... Freescale Semiconductor, Inc. - -T- SEATING PLANE 0.25 (0.010) –A– –B– 20X 0.010 (0.25 18X K PACKAGE DIMENSIONS P SUFFIX PLASTIC DIP CASE 738– 0.25 (0.010 SUFFIX SOG PACKAGE CASE 751D–04 P 10X 0.010 (0.25 SEATING –T– PLANE M NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14 ...
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... Freescale Semiconductor does not convey any license or for any other application in which the failure of the Freescale Semiconductor product under its patent rights nor the rights of others. Freescale Semiconductor products are surgical implant into the body, or other applications intended to support or sustain life, could create a situation where personal injury or death may occur ...