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ST75C185
LOW POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS
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MEETS STANDARD EIA-232-E SINGLE CHIP WITH INTERFACE BETWEEN UART AND SERIAL PORT CONNECTOR LESS THAN 20mW QUIESCENT POWER CONSUMPTION WIDE DRIVER SUPPLY VOLTAGE: 7 TO 13.2V DRIVER OUTPUT SLEW RATE LIMITED TO 30V/s MAX RECEIVER INTPUT HYSTERESIS: 1.1 TYP PUSH-PULL RECEIVER OUTPUTS ON CHIP RECEIVER 1s NOISE FILTER FUNCTIONALLY INTERCHANGEABLE WITH STM ST75185 ESD PROTECTION: 10KV HUMAN BODY MODEL
DIP
SOP
DESCRIPTION The ST75C185 is ow power BICMOS device containing three independent drivers and five receivers that is used to interface data terminal equipment (DTE) with data circuit-terminating equipment (DCE). This device has been designed to conform to Standards ANSI/EIA-232-E. The drivers have a controlled output slew rate that is limited to a maximum of 30V/s and the receivers have filters that reject input noise pulses that are shorter than 1s. Both these features eliminate the need of external components. The ST75C185 hasn't a power sequence fault condition. It has been designed using low-power techniques in a BICMOS technology. ORDERING CODES
Type ST75C185CN ST75C185CD ST75C185CDR ST75C185CTR ST75C185BN ST75C185BD ST75C185BDR ST75C185BTR Temperature Range 0 to 70 C 0 to 70 C 0 to 70 C 0 to 70 C -40 to 85 C -40 to 85 C -40 to 85 C -40 to 85 C Package
TSSOP
In most application the receivers contained in this device will interface to single inputs peripheral devices such as ACEs, UARTs or microprocessors. By using sampling, such peripheral devices are usually insensitive to the transition times of the input signals. If this is not the case, or for other uses, it is recommended that the ST75C185 receiver outputs be buffered by single gates of the HCMOS, ALS or 74F logic families.
Comments 20 parts per tube / 50 tubes per box 40 parts per tube / 25 tubes per box 1000 parts per reel 2500 parts per reel 20 parts per tube / 50 tubes per box 40 parts per tube / 25 tubes per box 1000 parts per reel 2500 parts per reel
DIP20 SO-20 (Tube) SO-20 (Tape & Reel) TSSOP20 (Tape & Reel) DIP20 SO-20 (Tube) SO-20 (Tape & Reel) TSSOP-20 (Tape & Reel)
December 2002
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ST75C185
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 VO IO 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) Output Voltage Range (RECEIVER) Receiver Low Level Output Current Operating Free-Air Tempereature Range Storage Temperature Range Lead Temperature 1.6mm from case for 10 sec Parameter Value 15 -15 7 -0.3 to (VCC + 0.3) -30 to 30 (VSS - 6) to (VDD + 6) -0.3 to (VCC + 0.3) 20 -40 to 85 -65 to + 150 260 Unit V V V V V V V mA C C C
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 voltages are with respect to the network ground terminal.
RECOMMENDED OPERATING CONDITIONS
Symbol VDD VSS VCC VI IOH IOL TA Supply Voltage Supply Voltage Supply Voltage Input Voltage (Note 2) High Level Output Current Low Level Output Current Operating Free-Air Tempereature Range DRIVER RECEIVER RECEIVER RECEIVER -40 25 Parameter Min 7 -7 4.5 0 -25 TYP 12 -12 5 Max 13.2 -13.2 5.5 VCC 25 -1 3.2 85 Unit V V V V mA mA C
NOTE 2: The algebraic conversion, where the more positive (less negative) limits designed 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.
SUPPLY CURRENTS
Value Symbol IDD ISS ICC Parameter Supply Current from VDD Supply Current from VSS Supply Current from VCC Test Conditions Min. No load. All inputs at 2 or 0.8V No load. All inputs at 2 or 0.8V No load. All inputs at 2 or 5V Typ. 115 -115 950 Max. 500 -500 1500 A A A Unit
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ST75C185
DRIVER ELECTRICAL CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (VDD = 12V, VSS = -12V, VCC = 5V 10%, unless otherwise specified)
Value Symbol VOH Parameter High Level Output Voltage Test Conditions Min. VIL = 0.8 V RL = 3K (See Figure 1) VIH = 1.9 V RL = 3K (See Figure 1) VDD = 7V, VSS = -7V VDD = 12V, VSS = -12V VDD = 7V, VSS = -7V VDD = 12V, VSS = -12V 2 VI = 5 V (See Figure 2) VI = 0 V (See Figure 2) VI = 0.8 V VO = 0 V or VSS (See Figure1) VI = 2 V VO = 0 V or VSS (See Figure 1) VO = -2 to 2 V VSS = VCC = VDD = 0 V -6 6 300 -20 35 450 5 10 Typ. 6.3 10.8 -6.3 -10.8 1.4 1.4 0.8 1 -1 -60 60 -5 -10 Max. V V V V V V A A mA mA Unit
VOL
Low Level Output Voltage (Note 3) High Level Input Voltage Low Level Input Voltage High Level Input Current Low Level Input Current High Level Short Circuit Output Current (Note 4) Low Level Short Circuit Output Current (Note 4) Output Resistance
VIH VIL IIH IIL IOS(H) IOS(L) RO
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: Not more than one outputs should be shorted at one time.
DRIVER SWITCHING CHARACTERISTICS (VDD = 12V, VSS = -12V, VCC = 5V, TA = 25 C)
Value Symbol tPLH tPHL tTLH tTHL SR Parameter Test Conditions Min. Propagation Delay Time, Low to High RL = 3 to 7 K CL = 1000 pF Level Output (See Figure 3) Propagation Delay Time, High to Low RL = 3 to 7 K CL = 1000 pF Level Output (See Figure 3) Transition Time Low to High Level RL = 3 to 7 K CL = 1000 pF Output (See Figure 3) Transition Time High to Low Level RL = 3 to 7 K CL = 1000 pF Output (See Figure 3, 4) Output Slew Rate (Note 5) RL = 3 to 7 K CL = 50 to 2500 pF (See Figure 3) Typ. 1.9 1.6 0.53 0.53 4 2 2 11 Max. 4 4 3.2 3.2 30 s s s s V/s Unit
NOTE 5: Measured between -3V and 3V points of output waveform (EIA-232-E conditions), all unused inputs tied either high or low.
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ST75C185
RECEIVER ELECTRICAL CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (VDD = 12V, VSS = -12V, VCC = 5V 10%, unless otherwise specified)
Value Symbol VT+ VTVhys VOH VOL IIH IIL IOS(H) IOS(L) Parameter Positive Going Threshold Voltage Negative Going Threshold Voltage Input Hysteresis (VT+ - VT-) (Note 6) High Level Output Voltage (Note 7) Low Level Output Voltage High Level Input Current Low Level Input Current Short-Circuit Output Current at High Level Short-Circuit Output Current at Low Level IOH = 0.75 mA or Input Open IOH = -1 mA (See Figure 6) VI = 3 V IOL = 3.2 mA (See Figure 6) VI = 25 V (See Figure 6) VI = 3 V VI = -3 V (See Figure 6) (See Figure 6) VI = -25 V (See Figure 6) VI = 0.75 V VO = 0 V (See Figure 5) VI = VCC VO = VCC (See Figure 5) Test Conditions Min. (See Figure 6) (See Figure 6) 1.6 0.65 0.6 3.5 Typ. 2.1 1 1.1 4.8 0.2 3.6 0.43 -3.6 -0.4 4.5 0.55 -4.4 -0.55 -13 35 0.4 8.3 1 -8.3 -1 -30 60 mA mA mA Max. 2.55 1.25 V V V V V mA Unit
All typical values are at TA = 25C NOTE 6: Hysteresis is the difference between the positive going input threshold voltage, VT+, and the negative going input threshold voltage VTNOTE 7: If the inputs are left unconnected, the receiver interprets this as an input low, and the receiver outputs will remain in the high state.
RECEIVER SWITCHING CHARACTERISTICS (VDD = 12V, VSS = -12V, VCC = 5V 10% TA = 25C)
Value Symbol tPLH tPHL tTLH tTHL tW(N) 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) Pulse Duration of longest pulse RL = 5 K CL = rejection as noise (Note 8) (See Figure 6) 50 pF 50 pF 50 pF 50 pF 50 pF 1 Typ. 3.2 2.6 30 10 2.3 Max. 4 4 100 50 4 s s ns ns s Unit
NOTE 8: The receiver ignores any positive or negative going pulse that is less than the minimum value of tW(N) and accepts any positive or negative going pulse greater than the maximum of tW(N).
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ST75C185
APPLICATION CIRCUITS
Figure 1 : Driver Test Circuit for VOH, ISO(H) and ISO(L)
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ST75C185
Figure 2 : Driver Test Circuit for IIH and IIL
Figure 3 : Driver Test Circuit
Figure 4 : Driver Voltage Waveforms
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ST75C185
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 : Driver Short Circuit Output Current vs Free-Air Temperature
Figure 10 : Driver Output Current vs Output Voltage
Figure 12 : Device Supply Current vs Temperature
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ST75C185
Figure 13 : Receiver Threshold vs Temperature Figure 14 : Receiver Threshold vs Supply Voltage
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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ST75C185
Plastic DIP-20 (0.25) MECHANICAL DATA
mm. DIM. MIN. a1 B b b1 D E e e3 F I L Z 3.3 1.34 8.5 2.54 22.86 7.1 3.93 0.130 0.053 0.254 1.39 0.45 0.25 25.4 0.335 0.100 0.900 0.280 0.155 1.65 TYP MAX. MIN. 0.010 0.055 0.018 0.010 1.000 0.065 TYP. MAX. inch
P001J
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ST75C185
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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ST75C185
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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ST75C185
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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ST75C185
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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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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