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| MITSUMI HBS-Compatible Driver and Receiver MM1192 HBS-Compatible Driver and Receiver Monolithic IC MM1192 Outline This IC conforms to the HBS (Home Bus) specification (Electronic Industries Association of Japan), and has functions for the reception and transmission of data. AMI is adopted for the waveforms of signals handled by the transmission and reception units, designed for connection to twisted-pair lines. The IC can be driven by a single 5V power supply, and incorporates an output transistor to reduce the number of external components required. Telephone equipment, security devices, audio or video equipment, air-conditioning equipment, and a wide range of other devices can be connected to a bus line to enable mutual communications. Features 1. 2. 3. 4. 5. 6. 7. Compact design High reliability Replaces pulse transformers Can be driven by a single 5V power supply Low cost Easy circuit design Few external components Applications 1. 2. 3. 4. 5. Telephony equipment Security equipment Audio and video devices Air-conditioning equipment Wide range of other equipment and devices Package DIP-16B (MM1192XD) Block Diagram MITSUMI HBS-Compatible Driver and Receiver MM1192 Pin Assignment 1 2 3 4 5 6 7 8 Reception DATA OUT VIN Boost capacitor pin Boost capacitor pin RESET DATA IN out (b) out (a) 9 10 11 12 13 14 15 16 OUT (A) OUT (B) VCC COLLECTOR (b) GND COLLECTOR (a) IN (2) IN (1) 16 15 14 13 12 11 10 9 12345678 DIP-16B Absolute Maximum Ratings (Ta=25C) Symbol TSTG TOPR VCC max. VCCOP Pd VCCOP2 VINOP Ratings -40~+125 -20~+70 -0.3~+7 4.5~5.5 450 4.75~5.25 8.0~40 Units C C V V mW V V Item Storage tempereture Operating tempereture Power supply voltage Operating power supply voltage Allowable loss Recommended power supply voltage range Bias voltage range (VIN) Electrical Characteristics (Except where noted therwise, Ta=25C, VCC=5V, Ftransmit=10kHz (DUTY=50%) RL=36) Measurement conditions No signal (5PIN="H") In transmission FL=10kHz, RL=36 Both pins 9 and 10 VTO1/VTO2 Min. Typ. Max. Units 8 13 mA 75 90 mA 3.8 4.2 4.6 VP-P 0.75 1.0 1.25 Item Symbol Power supply current 1 ICCO Power supply current 2 ICCON Transmission output voltage VTO Transmission waveform VTR symmetry Reception sensitivity VRS Noise resistance VRN Input impedance RIN Transmission Circuits Transmission delay time 1 Td1 Transmission delay time 2 Td2 Transmission delay time 3 Td3 Transmission delay time 4 Td4 Reception output H voltage VROH Reception output L voltage VROL Transmission waveform LOSS 1 VTLS1 Transmission waveform LOSS 2 VTLS2 H level input voltage VLIH L level input voltage VLIL H level input current ILIH L level input current ILIL Bootstrap output H voltage VBR Level at which no errors are output Both pins 15 and 16 cf. transmit/receive waveform diagrams cf. transmit/receive waveform diagrams cf. transmit/receive waveform diagrams cf. transmit/receive waveform diagrams VT=5V applied, power on VT=5V applied, power off VDATA IN=2.4V VDATA IN=0.4V 0.65 0.75 0.85 VP-P 0.55 VP-P 25 36 46 k 0.4 S 0.5 S 1.0 S 1.2 S 4.5 V 0.5 V 4.5 V 4.5 V 2.4 V 0.6 V 10 A -300 A 7.5 8.0 V When a negative voltage is applied to pins 7, 8, 9 and 10, there should be no abnormal operation of internal circuits between 0 and 6V. However, if a negative voltage exceeding -6V is applied, thyristor operation may result, so it is recommended that an external clamping diode be added. In addition, no measures have been taken for a negative voltage at pins 12 and 14. Hence if a negative voltage is applied to pins 12 and 14, the internal transistor should not be used. MITSUMI HBS-Compatible Driver and Receiver MM1192 Circuit Diagram Note 1: The peripheral components in the block diagram are the constants for Ftransmit=10kHz. If the frequency is low, larger values should be chosen for the coupling capacitors between the receive and transmit pins and the bus line and for the capacitor connecting pins 3 and 4. Note 2: A block diagram is shown for an example application in which an external transistor is used; but depending on system conditions the internal transistor may be used, and no external transistor is needed. In such cases pins 7 and 8 are left open, a 1 resistance is inserted between pins 10 and 12, and a 1 resistance is inserted between pins 9 and 14. When the load resistance (36) is to be varied during use, these resistances (1) should be changed according to the load resistance. If these resistances are omitted, oscillation may occur at low volume levels. Measuring Circuit 1. No external transistor MITSUMI 2. With external transistor HBS-Compatible Driver and Receiver MM1192 Timing Chart RESET DATA IN OUT (A) DATA IN OUT (A) OUT (B) DATA OUT Transmission delay time Td1 Td2 OUT (B) DATA OUT Td3 Td4 |
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