MITSUMI MM1192

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
HBS-Compatible Driver and Receiver MM1192
MITSUMI
Pin Assignment
1
2
3
4
5
6
7
8
16 15 14 13 12 11 10 9
1 2 3 4 5 6 7 8
DIP-16B
Absolute Maximum Ratings
Reception DATA OUT
VIN
Boost capacitor pin
Boost capacitor pin
RESET
DATA IN
out (b)
out (a)
OUT (A)
OUT (B)
VCC
COLLECTOR (b)
GND
COLLECTOR (a)
IN (2)
IN (1)
(Ta=25°C)
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
9
10
11
12
13
14
15
16
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
(Except where noted therwise, Ta=25°C, VCC=5V, Ftransmit=10kHz (DUTY=50%) RL=36Ω)
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
Measurement conditions
No signal (5PIN="H")
In transmission FL=10kHz, RL=36Ω
Both pins 9 and 10
VTO1/VTO2
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
Min. Typ. Max. Units
8
13 mA
75
90 mA
3.8 4.2 4.6 VP-P
0.75
1.0
1.25
0.65 0.75 0.85 VP-P
0.55
VP-P
25
36
46 kΩ
0.4
µS
0.5
µS
1.0
µS
1.2
µS
4.5
V
0.5
V
4.5
V
4.5
V
2.4
V
0.6
V
10 µA
-300 µA
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 1Ω resistance is inserted between pins 10 and 12,
and a 1Ω resistance is inserted between pins 9 and 14.
When the load resistance (36Ω) is to be varied during use, these resistances (1Ω) 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
HBS-Compatible Driver and Receiver MM1192
MITSUMI
2. With external transistor
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