UNISONIC TECHNOLOGIES CO., LTD 75232

UNISONIC TECHNOLOGIES CO., LTD
75232
LINEAR INTEGRATED CIRCUIT
MULTIPLE RS-232 DRIVERS
AND RECEIVERS

DESCRIPTION
The UTC 75232 is a monolithic IC containing three
independent drivers and five receivers which comply with the
requirements of the TIA/EIA232-F standards.

FEATURES
* Single chip with easy interconnection of the UART and
serial-port connector of personal computer.
* Meets standard TIA/EIA-232-F and ITU V.28
* Up to 120 kbps data rate
* 20-pin SOP/ DIP/SSOP/TSSOP packages

ORDERING INFORMATION
Ordering Number
Lead Free
75232L-D20-T
-

Halogen Free
75232G-D20-T
75232G-P20-R
75232G-R20-R
75232G-S20-R
Package
Packing
DIP-20
TSSOP-20
SSOP-20
SOP-20
Tube
Tape Reel
Tape Reel
Tape Reel
MARKING
DIP-20
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
SOP-20 / SSOP-20 / TSSOP-20
1 of 10
QW-R113-005,F
75232

LINEAR INTEGRATED CIRCUIT
PIN CONFIGURATION
VDD
RA1
1
20
2
19
RA2
RA3
3
18
4
17
DY1
DY2
5
16
6
15
RA4
DY3
7
14
8
13
9
12
10
11
RA5
VSS

VCC
RY1
RY2
RY3
DA1
DA2
RY4
DA3
RY5
GND
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
PIN NAME
VDD
RA1
RA2
RA3
DY1
DY2
RA4
DY3
RA5
VSS
GND
RY5
DA3
RY4
DA2
DA1
RY3
RY2
RY1
VCC
FUNCTION
Supply voltage
First receiver input
Second receiver input
Third receiver input
First driver output
Second driver output
Fourth receiver input
Third driver output
Fifth receiver input
Supply voltage
Ground
Fifth receiver output
Third driver input
Fourth receiver output
Second driver input
First driver input
Third receiver output
Second receiver output
First receiver output
Supply voltage
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2 of 10
QW-R113-005,F
75232

LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER
RATINGS
UNIT
15
V
Supply Voltage (Note 2)
-15
V
10
V
Driver
-15 ~ 7
V
Input Voltage Range
VIN
Receiver
-30 ~ 30
V
Driver Output Voltage Range
VOUT
-15 ~ 15
V
Receiver Low Level Output Current
IOUT
20
mA
Operation Temperature
TOPR
0 ~ +70
C
Storage Temperature
TSTG
-40 ~ +150
C
Note: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Note: 1. Absolute maximum ratings are stress ratings only and functional device operation is not implied.
Note: 2. All voltages are with respect to the network ground terminal.

SYMBOL
VDD
VSS
VCC
THERMAL DATA
PARAMETER
Junction-to-Ambient

SYMBOL
DIP-20
SOP-20
SSOP-20
TSSOP-20
θJA
UNIT
C/W
RECOMMENDED OPERATING RATINGS
PARAMETER
SYMBOL
VDD
VSS
VCC
VIH
VIL
Supply Voltage
Level Input Voltage (driver only)
High Level Output Current
Low Level Output Current

RATINGS
70
100
115
115
High
Low
Driver
Receiver
Driver
Receiver
MIN
7.5
-7.5
4.5
1.9
TYP
9
-9
5
MAX
15
-15
5.5
UNIT
V
V
V
V
V
0.8
-6.0
-0.5
6
16
IOH
IOL
mA
mA
E LECTRICAL CHARACTERISTICS
(Over recommended supply voltage and operating temperature ranges, unless otherwise specified)
PARAMETER
SUPPLY CURRENTS
Supply Current from VDD
Supply Current from VSS
Supply Current from VCC
SYMBOL
IDD
ISS
ICC
TEST CONDITIONS
VDD =9V, VSS =-9V
No load.
VDD =12, VSS =-12V
All inputs at 1.9V
VDD =15, VSS =-15V
VDD =9V, VSS =-9V
No load.
VDD =12, VSS =-12V
All inputs at 0.8V
VDD =15, VSS =-15V
VDD =9V, VSS =-9V
No load.
VDD =12, VSS =-12V
All inputs at 1.9V
VDD =15, VSS =-15V
VDD =9V, VSS =-9V
No load.
VDD =12, VSS =-12V
All inputs at 0.8V
VDD =15, VSS =-15V
No load. All inputs at 5V, VCC=5V
UNISONIC TECHNOLOGIES CO., LTD
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MIN
TYP
MAX UNIT
15
19
25
4.5
5.5
9
-15
-19
-25
-3.2
-3.2
-3.2
30
mA
mA
mA
mA
mA
3 of 10
QW-R113-005,F
75232

LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
DRIVER SECTION (VDD=9V, VSS=-9V, VCC=5V)
High
VOH
VIL=0.8V, RL=3 k
6
7.5
V
Output Voltage Level
(Figure. 1)
Low
VOL
VIH=1.9V, RL=3 k (Note 1)
-7.5
-6
V
High
I
V
=5V
10
A
Input Current Level
IH
IN
(Figure. 2)
Low
IIL
VIN=0V
-1.6
mA
High
IOH(SC) VIL=0.8V, VOUT=0V (Note 2)
-8.5
-12 -19.5 mA
Short Circuit Output
Current (Figure. 1)
Low
IOL(SC) VIH=2.0V, VOUT=0V
8.5
12
19.5
mA
Output Resistance (Note 3)
ROUT
VDD=VSS=VCC=0V, VOUT=-2V~2V
300

RECEIVER SECTION (VDD=9V, VSS=-9V, VCC=5V)
1.75
1.9
2.3
TA=25C (Figure. 5)
Positive
VT+
V
Going Threshold Voltage
TA=0C ~ 70C (Figure. 5)
1.55
2.3
Negative
VT0.75 0.97 1.25
V
Input Hysteresis(VT+ - VT-)
VHYS
0.5
V
2.6
4
5
VIH=0.75V
High
VOH
V
IOH=-0.5mA
Output Voltage Level
Inputs Open
2.6
Low
VOL
VIN=3V, IOL=10mA
0.2
0.45
V
VIN=25V
3.6
8.3
High
IIH
mA
VIN=3V
0.43
Input Current Level
(Figure. 5)
VIN=-25V
-3.6
-8.3
Low
IIL
mA
VIN=-3V
-0.43
Short-Circuit Output Current
IO(SC)
(Fig. 4)
-3.4
-12
mA
Note. 1. For voltage logic levels, the more positive (less negative) limit is designated as maximum, (e.g. if -10V is a
maximum, the typical value is a more negative voltage).
2: Output short circuit conditions must maintain the total power dissipation below absolute maximum ratings
and the sign is used to indicate direction.
3: Test conditions are those specified by TIA/EIA232-F and as listed above.

SWITCHING CHARACTERISTICS (Ta=25C)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
DRIVER SECTION (VDD=12V, VSS=-12V, VCC=5V)
tPLH
315
500
ns
RL=3 ~ 7 k, CL=15pF
Propagation Delay Time
(Figure.
3)
tPHL
75
175
ns
60
100
ns
tTLH
RL=3 ~ 7 k, CL=15pF
tTHL
40
75
ns
Transition Time
tTLH
1.7
2.5
s
RL=3 ~ 7 k, CL=2500pF
(Figure. 3, Note)
tTHL
1.5
2.5
s
RECEIVER SECTION (VDD=12V, VSS=-12V, VCC=5V)
tPLH
107
250
ns
RL=5 k, CL=50pF
tPHL
42
150
ns
Propagation Delay Time (Figure. 6)
100
160
ns
tPLH
RL=1.5 k, CL=15pF
tPHL
60
100
ns
tTLH
175
350
ns
RL=5 k, CL=50pF
tTHL
16
60
ns
Transition Time (Figure. 6)
90
175
ns
tTLH
RL=1.5 k, CL=15pF
tTHL
15
50
ns
Note: Measured points of the output waveform (TIA/EIA-232-F conditions) as below, all unused inputs are tied.
- Low to High level: between -3V and 3V.
- High to Low level: between 3V and -3V.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 10
QW-R113-005,F
75232

LINEAR INTEGRATED CIRCUIT
PARAMETER MEASUREMENT INFORMATION
DRIVER TEST CIRCUITS:
IIH
VDD
VCC
VIN
-IIL
VIN
VSS
Figure. 2 For IIH, IIL
Figure. 1 For VOH, VOL, IOH(SC), IOL(SC)
DRIVER VOLTAGE WAVEFORMS:
Figure. 3
Note: 1. The pulse generator characteristics: tW=25s, PRR=20kHz, ZO=50, tR=tF<50ns.
2. CL includes probe and jig capacitance.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 10
QW-R113-005,F
75232

LINEAR INTEGRATED CIRCUIT
PARAMETER MEASUREMENT INFORMATION (Cont.)
RECEIVER TEST CIRCUITS:
VDD
VCC
VIN
VSS
Figure. 4. IO(SC)
Figure. 5 VT, VOH, VOL
RECEIVER PROPAGATION AND TRANSITION TIMES:
Figure. 6.
Note: 1. The pulse generator characteristics: tW=25s, PRR=20kHz, ZO=50, tR=tF<50ns.
2. CL includes probe and jig capacitance.
UNISONIC TECHNOLOGIES CO., LTD
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6 of 10
QW-R113-005,F
75232

LINEAR INTEGRATED CIRCUIT
APPLICATION INFORMATION
Power-Supply protection to meet Power-Off fault conditions of TIA/EIA-232-F
Diodes placed in series with the VDD and VSS leads protect the device in the fault condition in which the
device outputs are shorted to 15V and the power supplies are at low and provide low-impedance paths to
ground.
VDD
±15V
Output
UTC 75232
VDD
UTC 75232
VSS
VSS
Typical Connection
“*”: Refer Figure 10 to select the correct values for the loading capacitors (C1, C2, and C3), which are required to
meet the RS-232 maximum slew-rate requirement of 30V/s. The value of the loading capacitors required
depends upon the line length and desired slew rate, but typically is 330 pF.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
7 of 10
QW-R113-005,F
75232

LINEAR INTEGRATED CIRCUIT
LOGIC SYMBOL AND LOGIC DIAGRAM
RA1
RY1
RA2
RY2
RA3
RY3
DY1
DA1
DY2
DA2
RA4
RY4
DY3
DA3
RA5
RY5
CIRCUIT OF DRIVERS (Resistor value shown are nominal.)
To Other Drivers
VDD
11.6kΩ
9.4kΩ
Input DAx
75.8Ω
320Ω
DYx Output
4.2kΩ
GND
To Other
Drivers
10.4kΩ
3.3kΩ
68.5Ω
VSS
To Other Drivers
CIRCUIT OF EACH RECEIVER (Resistor value shown are nominal.)
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8 of 10
QW-R113-005,F
75232
Output Current, IOUT (mA)
TYPICAL CHARACTERISTICS(DRIVER)
Output Voltage, VOUT (V)

LINEAR INTEGRATED CIRCUIT
12
Short-Circuit Output Current vs FreeAir Temperature
9
Figure 8
Slow Rate vs Load Capacitance
1000
VDD = 9V
VSS = -9V
RL = 3kΩ
TA = 25℃
IOL(SC)(VIN=1.9V)
6
3
0
VDD = 9V
VSS = -9V
VO = 0
-3
-6
IOH(SC) (VIN=0.8V)
-9
-12
0
10 20 30 40 50 60 70
Free-Air Temperature, TA (℃)
Figure 9
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SR- Slow (V/μs)
Short-Circuit Output Current, IOS (mA)
Figure 7
100
10
VOH (VIN=0.8V)
1
10
1000
100
Load Capacitance, CL (pF)
10000
Figure 10
9 of 10
QW-R113-005,F
75232

LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS(RECEIVER)
Input Threshold Voltage vs FreeAir Temperature
Input Threshold Voltage vs
Supply Voltage
2.4
2
2.2
2
1.6
1.8
1.4
1.6
1.2
VDD = 9V
VSS = -9V
VO = 0
1.4
1.2
1
1
VT-
0.4
0.6
0.2
0
2
3
5
4
6
7
8
9
Supply Voltage, VCC (V)
Figure 12
10
Supply Voltage, VCC (V)
10 20 30 40 50 60 70
Free-Air Temperature, TA (℃)
Figure 11
Amplitude (V)
0
VT-
0.8
0.6
0.8
0.4
VT+
1.8
VT+
Figure 13
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R113-005,F