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UTC 75323
DESCRIPTION
LINEAR INTEGRATED CIRCUIT
MULTIPLE RS-232 DRIVERS AND RECEIVERS
The UTC 75323 combines five drivers and three receivers. The flow-through design of the UTC 75323 decreases the part count, reduces the board space required, and allows easy interconnection of the UART and serial-port connector. The all-bipolar circuits and processing of the UTC 75323 provide a rugged, low-cost solution for this function. The UTC 75323 complies with the requirements of the ANSI TIA/EIA-232-Fand ITU (formerly CCITT) V.28 standards. These standards are for data interchange between a host computer and a peripheral at signal rates up to 20 Kbit/s. The switching speeds of the UTC 75323 are fast enough to support rates up to 120 kbit/s with lower capacitive loads (shorter cables). Interoperability at the higher signaling rates cannot be assured unless the designer has design control of the cable and the interface circuits at both ends. For interoperability at signaling rates up to 120 kbit/s, use of ANSI Standard TIA/EIA-423-B and TIA/EIA-422-B and ITU Recommendations V.10 and V.11 are recommended. The UTC 75323 is characterized for operation over a temperature range of 0 to 70.
SOP-20
DIP-20
FEATURES
*Single Chip With Easy Interface Between UART and Serial-Port Connector of an External Modem or Other Computer Peripheral *Five Drivers and Three Receivers Meet or Exceed the Requirements of ANSI Standard TIA/EIA-232-F and ITU Recommendation V.28 Standards. *Supports Data Rates up to 120 kbit/s. *Complement to the UTC 75232.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R113-007,A
UTC 75323
PIN CONFIGURATION
LINEAR INTEGRATED CIRCUIT
Vcc 1DA 2DA 3DA 1RY 2RY 4DA 3RY 5DA GND
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VDD 1DY 2DY 3DY 1RA 2RA 4DY 3RA 5DY Vss
LOGIC SYMBOL *
1DA 2DA 3DA 1RY 2RY 4DA 3RY 5DA 2 3 4 5 6 7 8 9 19 18 17 16 15 14 13 12 1DY 2DY 3DY 1RA 2RA 4DY 3RA 5DY
LOGIC DIAGRAM ( POSITIVE LOGIC )
1DA 2DA 3DA 1RY 2RY 4DA 3RY 5DA 2 3 4 5 6 7 8 9 19 18 17 16 15 14 13 12 1DY 2DY 3DY 1RA 2RA 4DY 3RA 5DY
* This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R113-007,A
UTC 75323
LINEAR INTEGRATED CIRCUIT
To Other Drivers
SCHEMATIC (EACH DRIVER)
VDD 11.6k Input DAx 75.8 4.2k GND To Other Drivers Vss To Other Drivers Resistor values shown are nominal. 10.4k 3.3k 68.5 320
9.4k
DYx Output
SCHEMATIC (EACH RECEIVER)
To Other Receivers Vcc 9k 2k 1.66k 5k RYx Output
Input RAx
3.8k 10k GND To Other Receivers
Resistor values shown are nominal.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R113-007,A
UTC 75323
PARAMETER
Supply voltage (see Note 1) Supply voltage (see Note 1) Supply voltage (see Note 1) Input voltage range: Driver Receiver Output voltage range, (Driver)
LINEAR INTEGRATED CIRCUIT
SYMBOL
Vcc VDD Vss VI Vo
ABSOLUTE MAXIMUM RATINGS (Ta=25)
RATINGS
10 15 -15 -15 ~ 7 -30 ~ 30 -15 ~ 15 20 97 67 260 -65 ~ 150
UNIT
V V V V V mA C/W C C
Low-level output current (Receiver) IOL Package thermal impedance JA SOP-20 DIP-20 Lead temperature 1.6mm(1/6 inch) from case Tlead for 10 seconds Storage temperature range Tstg note: 1. All voltages are with respect to the network ground terminal.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Supply voltage High-level input voltage Low-level input voltage High-level output current High-level output current, Operating free-air temperature Driver Driver Driver Receiver Driver Receiver
SYMBOL
VDD Vss Vcc VIH VIL IOH IOL Ta
MIN
7.5 -7.5 4.5 1.9
TYP
9 -9 5
MAX
13.5 -13.5 5.5 0.8 -6 -0.5 6 16 70
UNIT
V V V mA mA
0
SUPPLY CURRENTS OVER OPERATING FREE-AIR TEMPERATURE RANGE
PARAMETER
Supply current from VDD IDD Supply current from Vss Iss Suppy current from Vcc Icc
SYMBOL
TEST CONDITIONS
VDD=9V, Vss=-9V VDD=12V, Vss=-12V All inputs at 0.8V, No load VDD=9V, Vss=-9V VDD=12V, Vss=-12V All inputs at 1.9V, No load VDD=9V, Vss=-9V VDD=12V, Vss=-12V All inputs at 0.8V, No load VDD=9V, Vss=-9V VDD=12V, Vss=-12V Vcc=5V,All inputs at 5V, No load All inputs at 1.9V, No load
MIN
MAX
25 32 7.5 9.5 -25 -32 -5.3 -5.3 20
UNIT
mA mA mA mA mA
UTC
UNISONIC TECHNOLOGIES CO., LTD.
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QW-R113-007,A
UTC 75323
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
ELECTRICAL CHARACTERISTICS OVER OPERATING FREE-AIR TEMPERATURE RANGE,VDD=9V,Vss=-9V,Vcc=5V (UNLESS OTHERWISE NOTED)
High-level output voltage VOH VIL=0.8V,RL=3k (See Figure 1) 6 7.5 V Low-level output voltage(see Note 2) VOL VIH=1.9V,RL=3k (See Figure 1) -7.5 -6 V IIH High-level Input current VI=5V (See Figure 2) 10 A Low-level input current IIL VI=0 (See Figure 2) -1.6 mA High-level short-circuit output current VIL=0.8V,Vo=0 (See Figure 1) IOS(H) -4.5 -9 -19.5 mA (see Note 3) Low-level short-circuit output current IOS(L) VIH=2V,Vo=0 (See Figure 1) 4.5 9 19 mA ro Vcc=VDD=Vss=0,Vo=-2V to 2V Output resistance (see Note 4) 300 Notes: 2.The algebraic convention, where the more positive(less negative) limit is designated as maximum, is used in this data sheet for logic levels only,e.g.,if-10V is maximum, the typical value is a more negative voltage. 3.Output short-circuit conditions must maintain the total power dissipation below absolute maximum ratings. 4.Test conditions are those specified by TIA/EIA-232-F and as listed above.
SWITCHING CHARACTERISTICS (Ta=25,VDD=12V,Vss=-12V,Vcc=5V10%)
PARAMETER
Propagation delay time, low- to high-level output Propagation delay time, high-to low-level output TTLH Transition time, low-to high-level output
SYMBOL
tPLH tPHL
TEST CONDITIONS
RL=3k to 7k, CL=15pF (See Figure 3)
MIN
TYP MAX UNIT
315 75 500 ns 175
RL=3k to 7k, CL=15pF 60 100 ns (See Figure 3) tTLH RL=3k to 7k, CL=2500pF s 1.7 2.5 (See Figure 3 and Note 5) RL=3k to 7k, CL=15pF 40 75 ns (See Figure 3) Transition time, high-to low-level output tTHL RL=3k to 7k, CL=2500pF s 1.5 2.5 (See Figure 3 and Note 6) Note: 5. Measured between-3-V and 3-V points of the output waveform (TIA/EIA-232-F conditions),all unused inputs are tied either high or low. 6. Measured between 3-V and -3-V points of the output waveform (TIA/EIA-232-F conditions),all unused inputs are tied either high or low
ELECTRICAL CHARACTERISTICS OVER RECOMMENDED OPERATING CONDITIONS (UNLESS OTHERWISE NOTED)
PARAMETER
Positive-going input threshold voltage Negative-going input threshold voltage Input hysteresis voltage(VIT+ - VIT-) High-level output voltage
SYMBOL
VIT+ VITVhys VOH
TEST CONDITIONS
See Figure5 Ta=25 Ta=0 to 70 See Figure5 IOH=-0.5mA VIH=0.75V
MIN
1.75 1.55 0.75 0.5 2.6 2.6
TYP* MAX UNIT
1.9 0.97 4 0.2 2.3 2.3 1.25 5 V 0.45 8.3 -8.3 -3.4 -12 V dB mA mA mA mA V
Inputs open Low-level output voltage VOL IOL=10mA,VI=3V VI=25V. High-level input current IIH VI=3V VI=-25V Low-level input current IIL VI=-3V Short-circuit output current Ios See Figure 4 * All typical values are at Ta=25,Vcc=5V,VDD=9V,Vss=-9V
3.6 0.43 -3.6 -0.43
UTC
UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R113-007,A
UTC 75323
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL
tPLH tPHL tTLH tTHL
SWITCHING CHARACTERISTICS (Ta=25,VCC=5V,VDD=12V,VSS= -12V)
TEST CONDITIONS
CL=50pF,RL=5k See Figure 6
MIN
TYP MAX UNIT
107 42 175 16 500 150 525 60 ns ns ns ns
Propagation delay time, low-to high-level output Propagation delay time, high- to low-level output Transition time, low-to high-level output Transition time, high- to low-level output
PARAMETER MEASUREMENT INFORMATION
IOS(L) VDD Vcc VDD or GND -IOS(H) Vss or GND Vo RL=3k Vss Figure 1. Driver Test Circuit for VOH,VOL,IOS(H),and IOS(L)
VDD Vcc Input pulse Generator See Note B Vss tTHL TEST CIRCUIT VOLTAGE WAVEFORMS NOTES:A. CL includes probe and jig capacitance. B. The pulse generator has the following characteristics(tW=25s,PRR=20kHz,Zo=50,tr=tf<50ns) RL CL
( see Note A )
IIH VI -IIL VI
VDD Vcc
VI
Vss
Figure 2. Driver Test Circuit for IIH and IIL
3V Input Vo 90% Output 50% 10% 1.5V 1.5V 0V tPHL tPLH 90% VOH VOL tTLH
50% 10%
Figure 3. Driver Test Circuit and Voltage Waveforms
VDD Vcc -IOS VIT,VI VOL Vss VDD Vcc -IOH VI VOH IOL
Vss
Figure 4. Receiver Test Circuit for Ios
Figure 5. Receiver Test Circuit for VIT,VOH,and VOL
UTC
UNISONIC TECHNOLOGIES CO., LTD.
6
QW-R113-007,A
UTC 75323
VDD Vcc Input pulse Generator See Note B Vss TEST CIRCUIT RL CL
LINEAR INTEGRATED CIRCUIT
5V Input 50% 50% -5V tPHL Vo 90% Output tTHL VOLTAGE WAVEFORMS
(see Note A)
tPLH 90% VOH VOL tTLH
50% 10%
50% 10%
NOTES: A. CL includes probe and jig capacitance. B. The pulse generator has the following characteristics(tW=25s,PRR=20kHz,Zo=50,tr=tf<50ns)
Figure 6. Receive Propagation and Transition Times
TYPICAL CHARACTERISTICS DRIVER SECTION
VOLTAGE-TRANSFER CHARACTERISTICS
12 9
OUTPUT CURRENT VS OUTPUT VOLTAGE
VDD=12V,Vss=-12V VDD=9V,Vss=-9V Output Current, Io (mA)
20 16 12 8 4 0 -4 -8 -12 -16
VDD=9V Vss=-9V TA=25C
VOL(VI=1.9V)
Output Voltage , Vo ( V )
6 3 0 -3 -6 -9
VDD=6V,Vss=-6V
3-kLoad Line VOH(VI=0.8V)
8 -8 -4 0 4 Output Voltage, Vo (V) 12 16
-12 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 Input Voltage, VI (V)
SHORT-CIRCUIT OUTPUT CURRENT VS FREE-AIR TEMPERATURE
RL=3k TA=25C
-20 -16 -12
Shourt-Circuit Output Current, Ios (mA)
12 9 6 3 0 -3 -6 -9 -12 0
1000
SLEW RATE VS LOAD CAPACITANCE
Slew Rate, SR (V/s)
Ios(L) (VI=1.9V)
VDD=9V Vss=-9V RL=3k TA=25C
100
VDD=9V Vss=-9V Vo=0 Ios(H) (VI=0.8V)
10
10 20 30 40 50 60 Free-Air Temperature, TA (C)
70
1 10
100 1000 Load Capacitance, CL (pF)
10000
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UNISONIC TECHNOLOGIES CO., LTD.
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QW-R113-007,A
UTC 75323
2.4
LINEAR INTEGRATED CIRCUIT
INPUT THRESHOLD VOLTAGE VS SUPPLY VOLTAGE
SHORT-CIRCUIT OUTPUT CURRENT VS FREE-AIR TEMPERATURE
2
Input Threshold Voltage, VIT (V)
2 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0
Input Threshold Voltage, VIT (V)
2.2
1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 2 3 9 4 5 8 7 6 Supply Voltage, Vcc (V) 10
VIT+
VIT+
VIT-
VIT-
10 20 30 40 50 60 Free-Air Temperature, Ta (C)
70
16
MAXIMUM SUPPLY VOLTAGE VS FREE-AIR TEMPERATURE
NOISE REJECTION
6 5
Maximum Supply Voltage, VDD ( V)
14 12
VCC=5V TA=25C See Note A Cc=300pF
Amplitude ( V)
10 8 6 4 2 0 0
4 3
Cc=500pF Cc=12pF
2
Cc=100pF
1
RL3k(from each output to GND)
10 20 30 40 50 60 70 0 10 40 100 400 1000 4000 10000
Free-Air Temperature, Ta(C)
Pulse Duration, tw (ns)
NOTE A: This figure shows the maximum amplitude of a positive-going pulse that, starting from 0V, does not cause a change of the output level.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
8
QW-R113-007,A
UTC 75323
LINEAR INTEGRATED CIRCUIT
APPLICATION INFORMATION
Diodes placed in series with the VDD and Vss leads protect the UTC GD75323 in the fault condition in which the device output are shorted to VDD or Vss, and the Power supplies are at low and provide low-impedance paths to ground(see Figure 15)
VDD
75323
Output 15V
VDD 75323 Vss Vss
Figure 7. Power-Supply Protection to Meet Power-Off Fault Condition of TIA/EIA-232-F
TIA/EIA-232-F DB9S CONNECTOR TL16C450 ACE RI DTR CTS SO RTS SI DSR DCD 43 37 40 13 36 11 41 42 -12V 10 9 8 7 6 5 4 3 2 1 GND 5DA 3RY 4DA 2RY 1RY 3DA 2DA 1DA Vcc Vss 5DY 3RA 4DY 11 12 13 14 15 16 17 18 19 20 5 RI DTR CTS TX RTS RX DSR DCD 12V C2* C1* 1 C3* 6 C4* C5* 9
UTC 75323
2RA 1RA 3DY 2DY 1DY VDD
5V *See Figure10 to select the correct values for the loading capacitors(C1,C2,C3,C4 and C5),which may be required to meet the RS-232 maximum slew-rate requirement of 30V/us.The value of the loading capacitors res required depends upon the line length and desired slew rate,but is typically 330pF. NOTE C:To use the receivers only,VDD and Vss both must be powered or tied to ground. Figure 8. Typical Connection
UTC
UNISONIC TECHNOLOGIES CO., LTD.
9
QW-R113-007,A
UTC 75323
LINEAR INTEGRATED CIRCUIT
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.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
10
QW-R113-007,A

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