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ST75185
MULTIPLE RS-232 DRIVERS AND RECEIVERS
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MEETS AND EXCEEDS THE REQUIREMENTS OF EIA/TIA-232-E AND ITUV.28 STANDARD SINGLE CHIP WITH EASY INTERFACE BETWEEN UART AND SERIAL PORT CONNECTOR OF IBM PC/ATTM AND COMPATIBLES DESIGNED TO SUPPORT DATA RATES UP TO 120 Kbps PINOUT COMPATIBLE WITH ST75C185
SOP
TSSOP
DESCRIPTION The ST75185 contains three drivers and five receivers. The pinout matches the DB9S connector design in order to decrease the part count, reduce the board space required and allow easy interconnection of the UART and serial port connector of IBM PC/ATTM and compatibles. The bipolar circuits and processing of the ST75185 provides a rugged low-cost solution for this function at the expense of quiescent power and external passive components relative to the ST75C185. The ST75185 complies with the requirements of the EIA/TIA 232-E and ITU (formally CCITT) v.28 standards. These standards are for data interchange between a host computer and peripheral at signalling rates up to 20k-bits/s. The switching speeds of the ST75185 are fast enough to support rates up to 120K-bits/s with lower capacitive loads (shorter cables). Interoperability at the higher signalling rates cannot be assured ORDERING CODES
Type ST75185CTR ST75185CD ST75185CDR ST75185CPR Temperature Range 0 0 0 0 to 70 to 70 to 70 to 70 C C C C Package
SSOP
unless the designer has design control of the cable and the interface circuits at the both ends. For interoperability at signalling rates to 120 K-bits/s, use of EIA/ITA-423-B (ITU v.10) and EIA/ ITA-422-B (ITU v.11) standards are recommended. The ST75185 is characterized for operation over the range of 0C to 70C.
Comments 2500 parts per reel 40 parts per tube / 25 tubes per box 1000 parts per reel 1350 parts per reel
TSSOP20 (Tape & Reel) SO-20 (Tube) SO-20 (Tape & Reel) SSOP-20 (Tape & Reel)
December 2002
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PIN CONNECTION IEC LOGIC SYMBOL AND LOGIC DIAGRAM
PIN DESCRIPTION
PlN N 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 NAME AND FUNCTION Supply Voltage (+12V) 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 (-12V) Ground Fifth Receiver Ouput Third Driver Intput Fourth Receiver Ouput Second Driver Input First Driver Input Third Receiver Ouput Second Receiver Output First Receiver Output Supply Voltage (+5V)
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ABSOLUTE MAXIMUM RATINGS OVER OPERATING FREE-AIR TEMPERATURE RANGE
Symbol VDD VSS VCC VI VI VO IO PD TA Tstg TL Supply Voltage (Note 1) Supply Voltage (Note 1) Supply Voltage (Note 1) Input Voltage Range (DRIVER) Input Voltage Range (RECEIVER) Output Voltage Range (DRIVER) Receiver Low Level Output Current Continuous Total Power Dissipation Operating Free-Air Tempereature Range Storage Temperature Range Lead Temperature 1.6mm from case for 10 sec Parameter Value 15 -15 10 -15 to 7 -30 to 30 -15 to 15 20 See dissipation Rating Table 0 to 70 -65 to + 150 260 C C C Unit V V V V V V mA
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. NOTE 1: All voltage are with respect to the network ground terminal.
DISSIPATION RATING TABLE
Package MICROPACKAGE (D) Power Rating at TA 25C 1125 mW Derating Factor above TA = 25C (*) 9.0 mW/C Power Rating at TA 70C 720 mW
(*) This is the reverse of the traditional junction-case thermal resistance RtJ-C
RECOMMENDED OPERATING CONDITIONS
Symbol VDD VSS VCC VI IOH IOL TA Supply Voltage Supply Voltage Supply Voltage Driver Input Voltage High Level Output Current Low Level Output Current Operating Free-Air Tempereature Range DRIVER RECEIVER DRIVER RECEIVER 0 Parameter Min 7.5 -7.5 4.5 0 Max 15 -15 5.5 VCC -6 -0.5 6 16 70 Unit V V V V mA mA C
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ST75185
SUPPLY CURRENTS
Test Conditions Symbol IDD Parameter Supply Current from VDD VDD VSS Min. Value Unit Typ. Max. 15 19 25 4.5 5.5 9 -15 -19 -25 -3.2 -3.2 -3.2 30 mA
ISS
Supply Current from VSS
ICC
Supply Current from VCC
9 -9 No load. All inputs at 12 -12 1.9V 15 -15 9 -9 No load. All inputs at 12 -12 0.8V 15 -15 9 -9 No load. All inputs at 12 -12 1.9V 15 -15 9 -9 No load. All inputs at 12 -12 0.8V 15 -15 No load. All inputs at 5V VCC = 5V
mA
mA
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mA
DRIVER ELECTRICAL CHARACTERISTICS OVER OPERATING FREE-AIR TEMPERATURE RANGE (VDD = 9V, VSS = -9V, VCC = 5V, unless otherwise specified)
Value Symbol VOH VOL IIH IIL IOS(H) IOS(L) RO Parameter High Level Output Voltage Low Level Output Voltage (Note 3) High Level Input Current Low Level Input Current High Level Short Circuit Output Current (Note 4) Low Level Short Circuit Output Current Output Resistance Test Conditions Min. VIL = 0.8 V RL = 3K (See Figure 1) VIH = 1.9 V RL = 3K (See Figure 1) VI = 5 V (See Figure 2) VI = 0 V (See Figure 2) VIL = 0.8 V VIH = 2 V VO = 0 V (See Figure 1) VO = 0 V (See Figure 1) -4.5 4.5 300 -12 12 6 Typ. 7.5 -7.5 -6 10 -1.6 -19.5 19.5 Max. V V A mA mA mA Unit
VDD = VSS = VCC = 0 V VO = -2 to 2 V (Note 5)
NOTE 3: The algebraic convention, where the more positive (less negative) limits 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 EIA-232-E and as listed above.
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ST75185
DRIVER SWITCHING CHARACTERISTICS (VDD = 12V, VSS = -12V, VCC = 5V, TA = 25 C)
Value Symbol tPLH tPHL tTLH Parameter Test Conditions Min. Propagation Delay Time, Low to High RL = 3 to 7 K CL = 15 pF Level Output (See Figure 3, 4) Propagation Delay Time, High to Low RL = 3 to 7 K CL = 15 pF Level Output (See Figure 3, 4) Transition Time Low to High Level RL = 3 to 7 K CL = 15 pF Output (See Figure 3, 4) RL = 3 to 7 K CL = 2500 pF (Note 6, See Figure 3, 4) Transition Time High to Low Level RL = 3 to 7 K CL = 15 pF Output (See Figure 3, 4) RL = 3 to 7 K CL = 2500 pF (Note 6, See Figure 3, 4) Typ. 315 75 60 1.7 40 1.5 Max. 500 175 100 2.5 7.5 2.5 ns ns ns s ns s Unit
tTHL
NOTE 6: Measured between -3V and 3V points of output waveform (EIA-232-E conditions), all unused inputs are tied.
RECEIVER ELECTRICAL CHARACTERISTICS OVER OPERATING CONDITIONS
Value Symbol VT+ VTVhys VOH VOL IIH IIL IOS Parameter Positive Going Threshold Voltage Negative Going Threshold Voltage Input Hysteresis (VT+ - VT-) High Level Output Voltage Low Level Output Voltage High Level Input Current Low Level Input Current Short-Circuit Output Current IOH = -0.5mA VI = 3 V VI = 3 V VI = -3 V VIH = 0.75 V Inputs Open IOL = 10 mA (See Figure 6) (See Figure 6) Test Conditions Min. (See Figure 6) TA = 25 C (See Figure 6) 0.75 0.5 2.6 2.6 0.2 3.6 0.43 -3.6 -0.43 -3.4 -12 mA -8.3 mA 0.45 8.3 V mA 4 5 Typ. 2.2 0.97 Max. 2.4 V V V V Unit
VI = 25 V (See Figure 6) VI = -25 V (See Figure 6) VI = 0 V VO = 0 V (See Figure 5)
All typical values are at TA = 25C, VCC = 5V, VDD = 9V and VSS=-9V
RECEIVER SWITCHING CHARACTERISTICS (VDD = 12V, VSS = -12V, VCC = 5V TA = 25C)
Value Symbol tPLH tPHL tTLH tTHL Parameter Test Conditions Min. Propagation Delay Time Low to High RL = 5 K CL = Level Output (See Figure 6) Propagation Delay Time High to Low RL = 5 K CL = Level Output (See Figure 6) Transition Time Low to High Level RL = 5 K CL = Output (See Figure 6) Transition Time High to Low Level RL = 5 K CL = Output (See Figure 6) 50 pF 50 pF 50 pF 50 pF Typ. 400 70 200 20 Max. 1000 150 525 60 ns ns ns ns Unit
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ST75185
APPLICATION CIRCUITS
Figure 1 : Driver Test Circuit for VOH, ISO(H) and ISO(L)
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Figure 2 : Driver Test Circuit for IIH and IIL
Figure 3 : Driver Test Circuit
Figure 4 : Driver Voltage Waveforms
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Figure 5 : Receiver Test Circuit for IOS
Figure 6 : Receiver Test Circuit for VT, VOH, VOL
Figure 7 : Receiver Test Circuit
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Figure 8 : Receiver Voltage Waveforms
NOTE A: The pulse generator has the following characteristics: tW = 25s, PRR = 20KHz, ZO = 50 , tr = tf < 50ns NOTE B: CL includes probe and jig capacitance.
Figure 9 : Driver Voltage Transfer Characteristics
Figure 11 : Device Supply Current vs Temperature
Figure 10 : Driver Short Circuit Output Current vs Free-Air Temperature
Figure 12 : Driver Output Current vs Output Voltage
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ST75185
Figure 13 : Driver Output Slew Rate vs Load Capacitance Figure 15 : Receiver Threshold vs Supply Voltage
Figure 14 : Receiver Threshold vs Temperature
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ST75185
APPLICATION INFORMATION: DIODES ON POWER SUPPLY Diodes placed in series with the VDD and VSS leads protect the ST75185 in the fault condition in which the devices output are shorted to 15V and the power supplies are at low state and provide low-impedance path to ground (see Figure below).
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ST75185
SO-20 MECHANICAL DATA
mm. DIM. MIN. A a1 a2 b b1 C c1 D E e e3 F L M S 7.40 0.50 12.60 10.00 1.27 11.43 7.60 1.27 0.75 8 (max.) 0.291 0.020 13.00 10.65 0.35 0.23 0.5 45 (typ.) 0.496 0.393 0.050 0.450 0.300 0.050 0.029 0.512 0.419 0.1 TYP MAX. 2.65 0.2 2.45 0.49 0.32 0.014 0.009 0.020 0.004 MIN. TYP. MAX. 0.104 0.008 0.096 0.019 0.012 inch
PO13L
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ST75185
SSOP20 MECHANICAL DATA
mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0 0.55 0.05 1.65 0.22 0.09 6.9 7.4 5 7.2 7.8 5.3 0.65 BSC 4 0.75 8 0.95 0 0.022 1.75 1.85 0.38 0.25 7.5 8.2 5.6 TYP MAX. 2 0.002 0.065 0.009 0.004 0.272 0.291 0.197 0.283 0.307 0.209 0.0256 BSC 4 0.030 8 0.037 0.069 0.073 0.015 0.010 0.295 0.323 0.220 MIN. TYP. MAX. 0.079 inch
A
A2 A1 b e K c L E
D
E1
PIN 1 IDENTIFICATION
1
0061436C
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ST75185
TSSOP20 MECHANICAL DATA
mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0 0.45 0.60 0.05 0.8 0.19 0.09 6.4 6.2 4.3 6.5 6.4 4.4 0.65 BSC 8 0.75 0 0.018 0.024 1 TYP MAX. 1.2 0.15 1.05 0.30 0.20 6.6 6.6 4.48 0.002 0.031 0.007 0.004 0.252 0.244 0.169 0.256 0.252 0.173 0.0256 BSC 8 0.030 0.004 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.0079 0.260 0.260 0.176 inch
A
A2 A1 b e K c L E
D
E1
PIN 1 IDENTIFICATION
1
0087225C
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ST75185
Tape & Reel SO-20 MECHANICAL DATA
mm. DIM. MIN. A C D N T Ao Bo Ko Po P 10.8 13.2 3.1 3.9 11.9 12.8 20.2 60 30.4 11 13.4 3.3 4.1 12.1 0.425 0.520 0.122 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 1.197 0.433 0.528 0.130 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch
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ST75185
Tape & Reel SSOP20 MECHANICAL DATA
mm. DIM. MIN. A C D N T Ao Bo Ko Po P 8.4 7.7 2.9 3.9 11.9 12.8 20.2 60 22.4 8.6 7.9 3.1 4.1 12.1 0.331 0.303 0.114 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.339 0.311 0.122 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch
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ST75185
Tape & Reel TSSOP20 MECHANICAL DATA
mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.8 6.9 1.7 3.9 11.9 12.8 20.2 60 22.4 7 7.1 1.9 4.1 12.1 0.268 0.272 0.067 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.276 0.280 0.075 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch
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ST75185
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST logo is a registered trademark of STMicroelectronics (c) 2002 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. (c) http://www.st.com
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