MITSUMI
HBS-Compatible Driver and Receiver MM1192
HBS-Compatible Driver and Receiver
Monolithic IC MM1192
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. Compact design
2. High reliability
3. Replaces pulse transformers
4. Can be driven by a single 5V power supply
5. Low cost
6. Easy circuit design
7. Few external components
Applications
1. Telephony equipment
2. Security equipment
3. Audio and video devices
4. Air-conditioning equipment
5. Wide range of other equipment and devices
Package
DIP-16B (MM1192XD)
Block Diagram
Outline
MITSUMI
HBS-Compatible Driver and Receiver MM1192
Absolute Maximum Ratings
(Ta=25
C)
Pin Assignment
Item
Symbol
Ratings
Units
Storage tempereture
T
STG
-40~+125
C
Operating tempereture
T
OPR
-20~+70
C
Power supply voltage
V
CC
max.
-0.3~+7
V
Operating power supply voltage
V
CCOP
4.5~5.5
V
Allowable loss
Pd
450
mW
Recommended power supply voltage range
V
CCOP
2
4.75~5.25
V
Bias voltage range (V
IN
)
V
INOP
8.0~40
V
Electrical Characteristics
(Except where noted therwise, Ta=25C, V
CC
=5V, Ftransmit=10kHz (DUTY=50%) R
L
=36
)
Item
Symbol
Measurement conditions
Min. Typ. Max. Units
Power supply current 1
ICCO
No signal (5PIN="H")
8
13
mA
Power supply current 2
ICCON
In transmission FL=10kHz, R
L
=36
75
90
mA
Transmission output voltage
V
TO
Both pins 9 and 10
3.8
4.2
4.6
V
P-P
Transmission waveform
V
TR
V
TO
1/V
TO
2
0.75
1.0
1.25
symmetry
Reception sensitivity
V
RS
0.65 0.75 0.85 V
P-P
Noise resistance
V
RN
Level at which no errors are output
0.55
V
P-P
Input impedance
R
IN
Both pins 15 and 16
25
36
46
k
Transmission delay time 1
T
d
1
cf. transmit/receive waveform diagrams
0.4
S
Transmission delay time 2
T
d
2
cf. transmit/receive waveform diagrams
0.5
S
Transmission delay time 3
T
d
3
cf. transmit/receive waveform diagrams
1.0
S
Transmission delay time 4
T
d
4
cf. transmit/receive waveform diagrams
1.2
S
Reception output H voltage
V
ROH
4.5
V
Reception output L voltage
V
ROL
0.5
V
Transmission waveform LOSS 1
V
TLS
1
V
T
=5V applied, power on
4.5
V
Transmission waveform LOSS 2
V
TLS
2
V
T
=5V applied, power off
4.5
V
H level input voltage
V
LIH
2.4
V
L level input voltage
V
LIL
0.6
V
H level input current
I
LIH
V
DATA IN
=2.4V
10
A
L level input current
I
LIL
V
DATA IN
=0.4V
-300
A
Bootstrap output H voltage
V
BR
7.5
8.0
V
Transmission
Circuits
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.
1
Reception DATA OUT
9
OUT (A)
2
V
IN
10
OUT (B)
3
Boost capacitor pin
11
V
CC
4
Boost capacitor pin
12
COLLECTOR (b)
5
RESET
13
GND
6
DATA IN
14
COLLECTOR (a)
7
out (b)
15
IN (2)
8
out (a)
16
IN (1)
DIP-16B
1
3
7
6
2
4 5
8
16
13
11
15 14
12
9
10
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
HBS-Compatible Driver and Receiver MM1192
2. With external transistor
Timing Chart
RESET
DATA
IN
DATA
OUT
OUT (A)
OUT (B)
Td1
Td3
Td2
Td4
DATA
IN
DATA
OUT
OUT (A)
OUT (B)
Transmission delay time
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