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UNISONIC TECHNOLOGIES CO., LTD 75185
MULTIPLE RS-232 DRIVERS AND RECEIVERS
DESCRIPTION
The UTC 75185 complies with the requirements of the TIA/EIA232-F and ITU (formerly CCITT) v.28 standards. These standards are for data interchange between a host computer and peripheral at signaling rates up to 20kbit/s. The switching speeds of the UTC 75185 are fast enough to support rates up to 120kbite/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 to 120kbit/s, use of ITA/EIA-423-B (ITU v.10) and TIA/EIA-422-B (ITU v.11) standards are recommended.
LINEAR INTEGRATED CIRCUIT
TSSOP-20
SSOP-20
SOP-20
DIP-20
FEATURES
*Single Chip with Easy Interface between UART and Serial-Port connector of PC. *Three Drivers and five Receivers Meet or Exceed the Requirements of TIA/EIA-232-F and ITU v.28 Standards. *Designed to Support Data Rates up to 120 kbps
ORDERING INFORMATION
Normal 75185-D20-T 75185-P20-R 75185-R20-R 75185-S20-R Ordering Number Lead Free Plating 75185L-D20-T 75185L-P20-R 75185L-R20-R 75185L-S20-R Halogen Free 75185G-D20-T 75185G-P20-R 75185G-R20-R 75185G-S20-R Package DIP-20 TSSOP-20 SSOP-20 SOP-20 Packing Tube Tape Reel Tape Reel Tape Reel
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PIN CONFIGURATIONS
VDD RA1 RA2 RA3 DY1 DY2 RA4 DY3 RA5 VSS 1 2 3 4 5 6 7 8 9 10
LINEAR INTEGRATED CIRCUIT
20 19 18 17 16 15 14 13 12 11
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 SYMBOL VDD RA1 RA2 RA3 DY1 DY2 RA4 DY3 RA5 VSS GND RY5 DA3 RY4 DA2 DA1 RY3 RY2 RY1 VCC PIN DESCRIPTION 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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PARAMETER Supply Voltage (Note 1) Input Voltage Range Driver Output Voltage Range Receiver Low Level Output Current Storage Temperature Range Drive Receiver SYMBOL VDD VSS VCC VIN VOUT IOUT TSTG
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS OVER OPERATING FREE-AIR TEMPERATURE RANGE (unless otherwise specified)
RATINGS 15 -15 10 -15 ~ 7 -30 ~ 30 -15~ 15 20 -65 ~ +150 UNIT V V V V V V mA C
THERMAL DATA
PARAMETER DIP-20 Junction to Ambient SYMBOL RATINGS 70 UNIT
SOP-20 100 JA C/W SSOP-20 115 TSSOP-20 115 Note 1: All voltage are with respect to the network ground terminal. Note 2: The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace length of zero.
RECOMMENDED OPERATING CONDITIONS
PARAMETER Supply Voltage Input Voltage (Driver Only) High Level Output Current Low Level Output Current Operating Free-Air Temperature High Level Low Level Drive Receiver Drive Receiver SYMBOL VDD VSS VCC VIH VIL IOH IOL TA 0 MIN 7.5 -7.5 4.5 1.9 TYP 9 -9 5 MAX 15 -15 5.5 0.8 -6.0 -0.5 6 16 70 UNIT V V V V V mA mA C
SUPPLY CURRENTS
PARAMETER SYMBOL TEST CONDITIONS VDD VSS 9 -9 No load. 12 -12 All inputs at 1.9V 15 -15 9 -9 No load. 12 -12 All inputs at 0.8V 15 -15 9 -9 No load. 12 -12 All inputs at 1.9V 15 -15 9 -9 No load. 12 -12 All inputs at 0.8V 15 -15 No load. All inputs at 5V, VCC=5V MIN MAX 15 19 25 4.5 5.5 9 -15 -19 -25 -3.2 -3.2 -3.2 30 UNIT mA
Supply Current From VDD
IDD
mA
mA
Supply Current From VSS
ISS
mA mA
Supply Current From VCC
ICC
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LINEAR INTEGRATED CIRCUIT
DRIVER ELECTRICAL CHARACTERISTICS OVER RECOMMENDED OPERATING FREE-AIR TEMPERATURE RANGE (VDD=9V, VSS=-9V, VCC=5V, unless otherwise specified)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT High Level Output Voltage VOH VIL =0.8V, RL =3 k (Figure 1) 6 7.5 V Low Level Output Voltage (Note 3) VOL VIH =1.9V, RL =3 k (Figure 1) -7.5 -6 V High Level Input Current IIH VIN =5V (Figure 2) 10 A Low Level Input Current IIL VIN =0V (Figure 2) -1.6 mA High Level Short Circuit Output Current IOS(H) VIL =0.8V, VOUT =0V(Figure 1) -4.5 -12 -19.5 mA (Note 4) Low Level Short Circuit Output Current IOS(L) VIH =2V, VOUT =0V(Figure 1) 4.5 12 19.5 mA Output Resistance (Note 5) ROUT VDD =VSS=VCC=0V, VOUT =-2 to 2V 300 Note 3: The algebraic convention, where the more positive (less negative) limit is designated as maximum, is used in this datasheet for logic levels only (e.g. if -10V is a maximum, the typical value is a more negative voltage). Note 4: Output short circuit conditions must maintain the total power dissipation below absolute maximum ratings. Note 5: Test conditions are those specified by TIA/EIA232-F and as listed above.
DRIVER SWITCHING CHARACTERISTICS (VDD=12V, VSS=-12V, VCC=5V, TA=25C)
SYMBOL TEST CONDITIONS MIN TYP MAX UNIT tPLH RL=3 to 7 k, CL=15pF (Figure 3) 315 500 ns RL=3 to 7 k, CL=15pF (Figure 3) tPHL 75 175 ns RL=3 to 7 k, CL=15pF (Figure 3) 60 100 ns Transition Time Level Output Low to High tTLH RL=3 to 7 k, CL=2500pF 1.7 2.5 s (Note 6,Figure 3) RL=3 to 7 k, CL=15pF (Figure 3) 40 75 ns Transition Time Level Output High to Low tTHL RL=3 to 7 k, CL=2500pF 1.5 2.5 s (Note 7, Figure 3) Note 6: Measured between -3V and 3V points of the output waveform (TIA/EIA-232-F conditions), all unused inputs are tied. Note 7: Measured between 3V and -3V points of the output waveform (TIA/EIA-232-F conditions), all unused inputs are tied. PARAMETER Propagation Delay Time Level Low to High Output High to Low
RECEIVER ELECTRICAL CHARACTERISTICS OVER RECOMMENDED OPERATING CONDITIONS (TA=25C, VCC=5V, VDD=9V, VSS=-9V)
PARAMETER Positive Going Threshold Voltage Negative Going Threshold Voltage Input Hysteresis (VT+ - VT-) Output Voltage High level Low level High level Input Current Low level Short-Circuit Output Current IIL IOS SYMBOL VT + VT VHYS VOH VOL IIH VIH=0.75V Inputs Open VIN=3V, IOL=10mA VIN=25V (Figure 5) VIN=3V (Figure 5) VIN=-25V (Figure 5) VIN=-3V (Figure 5) IOH=-0.5mA (Figure 4) TEST CONDITIONS (Figure 5) TA=25C TA=0C to 70C MIN 1.75 1.55 0.75 0.5 2.6 2.6 3.6 0.43 -3.6 -0.43 -3.4 TYP 1.9 0.97 4 0.2 MAX 2.3 2.3 1.25 5 0.45 8.3 -8.3 -12 UNIT V V V V V mA mA mA
RECEIVER SWITCHING CHARACTERISTICS (VDD=12V, VSS=-12V, VCC=5V, TA=25C)
PARAMETER Propagation Delay Time Level Output Transition Time Level Output Low to High High to Low Low to High High to Low SYMBOL TEST CONDITIONS RL=5 k, CL=50pF tPLH (Figure 6) tPHL tTLH tTHL MIN TYP 107 42 175 16 MAX 500 150 525 60 UNIT ns ns ns ns 4 of 10
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UNISONIC TECHNOLOGIES CO., LTD
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75185
PARAMETER MEASUREMENT INFORMATION
DRIVER TEST CIRCUITS:
LINEAR INTEGRATED CIRCUIT
Figure 1. For VOH, VOL, IOS(H), IOS(L)
Figure 2. For IIH, IIL
DRIVER VOLTAGE WAVEFORMS:
Figure 3. Note 1. The pulse generator has the following characteristics: tw=25s, PRR=20kHz, Zo=50, tr=tf<50ns. 2. CL includes probe and jig capacitance.
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RECEIVER TEST CIRCUITS:
LINEAR INTEGRATED CIRCUIT
PARAMETER MEASUREMENT INFORMATION (Cont.)
Figure 4. For IOS
Figure 5. For VT, VOH, VOL
RECEIVER PROPAGATION AND TRANSITION TIMES:
3V Input Pulse Generator (see Note A) VSS TEST DIRCUIT RL VDD Input 50% 50% 0V
VCC tPHL
CL (see Note B) 90% Output
tPLH
50% 10% 90% VOH VOL
50% 10%
tTHL
VOLTAGE WAVEFORMS
tTLH
Figure 6. Note 1. The pulse generator has the following characteristics: tw=25s, PRR=20kHz, Zo=50, tr=tf<50ns. 2. CL includes probe and jig capacitance.
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APPLICATION INFORMATION
LINEAR INTEGRATED CIRCUIT
Power-Supply protection to meet Power-Off fault conditions of TIA/TIA-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.
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.
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www.unisonic.com.tw
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LOGIC SYMBOL AND LOGIC DIAGRAM
LINEAR INTEGRATED CIRCUIT
RA1 RA2 RA3 RA1 RA2 RA3 DY1 DY2 RA4 DY3 RA5 2 3 4 5 6 7 8 9 19 18 17 16 15 RY1 RY2 RY3 DA1 DA2 DY1 DY2 RA4 DY3 RA5
RY1 RY2 RY3 DA1 DA2 RY4 DA3 RY5
14 RY4 13 DA3 12 RY5
CIRCUIT OF DRIVERS (Resistor value shown are nominal.)
CIRCUIT OF EACH RECEIVER (Resistor value shown are nominal.)
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TYPICAL CHARACTERISTICS (DRIVER)
LINEAR INTEGRATED CIRCUIT
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Output Current, IOUT (mA)
Output Voltage, VOUT (V)
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TYPICAL CHARACTERISTICS (RECEIVER)
LINEAR INTEGRATED CIRCUIT
Noise Rejection 6 5 4 3
CC = 12pF CC = 500pF VCC = 5V TA = 25C See Note A CC = 300pF
Maximum Supply Voltage vs Free-Air Temperature 16 14 12 10 8 6 4 2
RL 3k(from each output to GND)
2
CC = 100pF
1 0 10
40 100 400 1000 4000 10000 Pulse Duration, tw (ns)
0
0
10 20 30 40 50 60 Free-Air Temperature, TA (C)
70
The maximum amplitude staring from 0V of a positive-going pulse that will not cause a change in the output level.
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.
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