ST75C185CTR

ST75C185 STMICROELECTRONICS | Alldatasheet

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Technical content

MULTIPLE RS-232 DRIVERS AND RECEIVERS TARGET DATA June 2000 n MEETS STANDARD EIA-232-E n SINGLECHIP WITH INTERFACE BETWEEN UART AND SERIALPORT CONNECTOR n LESSTHAN 20mW QUIESCENT POWER CONSUMPTION n WIDE DRIVER SUPPLY VOLTAGE:7 TO 13.2V n DRIVER OUTPUT SLEWRATE LIMITED TO 30V/µsM A X n RECEIVER INPUT HYSTERESIS: 1.1 TYP n PUSH-PULL RECEIVER OUTPUTS n ON CHIP RECEIVER 1µsN O I S EF I L T E R n FUNCTIONALLY INTERCHANG EABLE WITH STM ST75185 n ESD PROTECTION: ±10KV HUMAN BODY MODEL

DESCRIPTION

The ST75C185 is low 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/µs and the receivers have filters that reject input noise pulses that are shorter than 1µs. 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 tecnology. 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 usuallly 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. PIN CONNECTION IEC LOGIC SYMBOL AND LOGIC DIAGRAM (Micro Package) (Plastic Package) (TSSOP Package)

Type Temperature Range Package Comments ST75C185CN 0 to 70 oC DIP-20 20 parts per tube / 50 tubes per box ST75C185CD 0 to 70 oC SO-20 (Tube) 40 parts per tube / 25 tubes per box ST75C185CDR 0 to 70 oC SO-20 (Tape & Reel) 1000 parts per reel ST75C185CTR 0 to 70 oC TSSOP20 (Tape & Reel) 2500 parts per reel ST75C185BN -40 to 85 oC DIP-20 20 parts per tube / 50 tubes per box ST75C185BD -40 to 85 oC SO-20 (Tube) 40 parts per tube / 25 tubes per box ST75C185BDR -40 to 85 oC SO-20 (Tape & Reel) 1000 parts per reel ST75C185BTR -40 to 85 oC TSSOP20 (Tape & Reel) 2500 parts per reel PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCTION 1V DD Supply Voltage (+12V)

2 RA1 First Receiver Input

3 RA2 Second Receiver Input

4 RA3 Third Receiver Input

5 DY1 First Driver Output

6 DY2 Second Driver Output

7 RA4 FourthReceiver Input

8 DY3 Third Driver Output

9 RA5 Fifth Receiver Input

SS Supply Voltage (-12V)

11 GND Ground

12 RY5 Fifth Receiver Output

13 DA3 Third Driver Input

14 RY4 Fourth Receiver Output

15 DA2 Second Driver Input

16 DA1 First Driver Input

17 RY3 Third Receiver Output

18 RY2 Second Receiver Output

19 RY1 First Receiver Output

CC Supply Voltage (+5V) ST75C185

ABSOLUTE MAXIMUM RATINGS OVER OPERATING FREE-AIR TEMPERATURE RANGE (unless otherwise specified) Symbol Parameter Value Unit VDD Supply Voltage (Note 1) 15 V VSS Supply Voltage (Note 1) -15 V VCC Supply Voltage (Note 1) 7 V V I Input Voltage Range (DRIVER) -0.3 to (V CC +0.3) V V I Input Voltage Range (RECEIVER) -30 to 30 V V O Output Voltage Range (DRIVER) (V SS -6) to (VDD +6) V V O Output Voltage Range (RECEIVER) -0.3 to (V CC +0.3) V IO Receiver Low Level Output Current 20 mA TA Operating Free-Air Temperature Range -40 to 85 oC Tstg Storage Temperature Range -65 to +150 oC TL Lead Temperature 1.6mm from case for 10 sec 260 oC AbsoluteMaximum Ratingsarethose values beyond whichdam age to the device may occur. Functional operation un der these condition isnot implied. NOTE1:All voltages are with respect to the network ground terminal. RECOMMENDED OPERATING CONDITIONS Symbol Parameter Min TYP Max Unit VDD Supply Voltage 7 12 13.2 V VSS Supply Voltage -7 -12 -13.2 V VCC Supply Voltage 4.5 5 5.5 V V IN Input Voltage (Note 2) DRIVER 0V CC V RECEIVER -25 25 IOH High Level Output Current RECEIVER -1 mA IOL Low Level Output Current RECEIVER 3.2 mA TA Operating Free-Air Temperature -40 25 85 oC NOTE 2: The algebraic convertion, where the more positive (less negative) limit is designed as maximum, is used in this datasheet for logic levels only, e.g.if-10V is a maximum, thetypical valueis a more negative voltage. ST75C185

SUPPLY CURRENTS (VDD = 12V, VSS = -12V, VCC = 5V, unless otherwise specified) Symbol Parameter Test Conditions Value Unit Min. Typ. Max. IDD Supply Current from VDD No load. All inputs at 2 or 0.8V 115 500 µ A ISS Supply Current from VSS No load. All inputs at 2 or 0.8V -115 -500 µ A ICC Supply Current from VCC No load. All inputs at 0 or 5V 950 1500 µA DRIVER ELECTRICAL CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (VDD = 12V, VSS = -12V, VCC =5 V±10%, unless otherwise specified) Symbol Parameter Test Conditions Value Unit Min. Typ. Max. VOH High Level Output Voltage V IL =0 . 8 V R L =3 KΩ (See Figure 1) VDD = 7V, VSS = -7V 5 6.3 V VDD = 12V, VSS = -12V 10 10.8 V VOL Low Level Output Voltage (Note 3) VIH = 1.9 V R L =3 KΩ (See Figure 1) VDD = 7V, VSS = -7V -6.3 -5 V VDD = 12V, VSS = -12V -10.8 -10 V VIH High Level Input Voltage 2 1.4 V VIL Low Level Input Voltage 1.4 0.8 V IIH High Level Input Current V I = 5 V (See Figure 2) 1 µA IIL Low Level Input Current V I = 0 V (See Figure 2) -1 µA IOS(H) High Level Short Circuit Output Current (Note 4) VI =0 . 8V VO =0 Vo rVSS (See Figure 1) -6 -20 -60 mA IOS(L) Low Level Short Circuit Output Current (Note 4) VI =2V V O =0 Vo rVSS (See Figure 1) 63 5 6 0 m A R O Output Resistance V O =- 2t o2V V SS =V CC =V DD = 0V 300 450 Ω NOTE3: The algebraic convention, where the more positive (less negative) limit is designated as maximum, i s used in this datasheet for logic levels only (e.g. if-10V is a maximum, the typical value is a morenegative voltage). NOTE4: Notmore than one outputs should beshorted atonetime. DRIVER SWITCHING CHARACTERISTICS (VDD = 12V, VSS = -12V, VCC =5 V TA =2 5oC) Symbol Parameter Test Conditions Value Unit Min. Typ. Max. tPLH Propagation Delay Time, Low to High Level Output R L =3t o7K Ω C L =1 0 0 0p F (See Figures 3) 1.9 4 µs tPHL Propagation Delay Time High to Low Level Output R L =3t o7K Ω C L =1 0 0 0p F (See Figures 3) 1.6 4 µs tTLH Transition Time Low to High Level Output R L =3t o7K Ω C L =1 0 0 0p F (See Figures 3) 0.53 2 3.2 µs tTHL Transition Time High to Low Level Output R L =3t o7K Ω C L =1 0 0 0p F (See Figure 3) 0.53 2 3.2 µs SR Output Slew Rate (Note 5) R L =3t o7K Ω C L = 50 to 2500 pF (See Figure 3) 41 1 3 0 V / µs NOTE5: Measured between -3V and 3V pointsof output waveform (EIA-232-Econditions), allunused inputstied eithe r highor low. ST75C185

RECEIVER ELECTRICAL CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (VDD = 12V, VSS = -12V, VCC =5 V±10%, unless otherwise specified) Symbol Parameter Test Conditions Value Unit Min. Typ. Max. VT+ Positive Going Threshold Voltage (See Figure 6) 1.6 2.1 2.55 V VT- Negative Going Threshold Voltage (See Figure 6) 0.65 1 1.25 V Vhys Input Hysteresis (VT+ -V T-) (Note 6) 0.6 1.1 V VOH High Level Output Voltage (Note 7) IOH = 0.75mA or Input Open IOH = -1mA (See Figure 6) 3.5 4.8 V VOL Low Level Output Voltage V I =3V I OL =3 . 2m A (See Figure 6) 0.2 0.4 V IIH High Level Input Current V I = 25 V (See Figure 6) 3.6 4.5 8.3 mA VI = 3 V (See Figure 6) 0.43 0.55 1 IIL Low Level Input Current V I = -25 V (See Figure 6) -3.6 -4.4 -8.3 mA VI = -3 V (See Figure 6) -0.4 -0.55 -1 IOS(H) Short-Circuit Output Current at High Level VI =0 . 7 5V VO =0V (See Figure 5) -13 -30 mA IOS(L) Short-Circuit Output Current at Low Level VI =V CC VO =V CC (See Figure 5) 35 60 mA Alltypical values areat TA =2 5oC, NOTE6: Hysteresis is thedifference between the positive going input threshold voltage, VT+, and the negative going input threshold voltage VT-. NOTE7: If the inputs are letf 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 =5 V±10% T A =2 5oC) Symbol Parameter Test Conditions Value Unit Min. Typ. Max. tPLH Propagation Delay Time, Low to High Level Output R L =5K Ω C L =5 0p F (See Figure 6) 3.2 4 µs tPHL Propagation Delay Time High to Low Level Output R L =5K Ω C L =5 0p F (See Figure 6) 2.6 4 µs tTLH Transition Time Low to High Level Output R L =5K Ω C L =5 0p F (See Figure 6) 30 100 ns tTHL Transition Time High to Low Level Output R L =5K Ω C L =5 0p F (See Figure 6) 10 50 ns tW(N) Pulse Duration of longest pulse rejection as noise (Note8) R L =5K Ω C L =5 0p F (See Figure 6) 1 2.3 4 µs NOTE 8: Thereceiver ignores any positive or neg ative going pulse that is less than theminimumvalue oftW(N) andaccepts anypositive or nega tive going pulsegreater than the maximum of tW(N). ST75C185

Driver Voltage Transfer Characteristics Driver Short Circuit Output Current vs Free-Air Temperature Receiver Threshold vs Temperature Driver Output Current vs Output Voltage Device Supply Current vs Temperature Receiver Threshold vs Supply Voltage ST75C185

+Vdd -Vss ST75C185Output ST75C185Output Output shorted to±15V APPLICATION INFORMATION: DIODES ON POWER SUPPLY Diodes placed in series with the VDD and VSS leads protect the ST75C185 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). Any idle transmitter input must be connected to GND or VCC . This device is not sensitive to power supply sequence. ST75C185

DIM. mm inch a1 0.254 0.010 B 1.39 1.65 0.055 0.065 b 0.45 0.018 b1 0.25 0.010 D 25.4 1.000 E 8.5 0.335 e 2.54 0.100 e3 22.86 0.900 F 7.1 0.280 I 3.93 0.155 L 3.3 0.130 Z 1.34 0.053 P001J Plastic DIP-20 (0.25) MECHANICAL DATA ST75C185

DIM. mm inch A 2.65 0.104 a1 0.10 0.20 0.004 0.007 a2 2.45 0.096 b 0.35 0.49 0.013 0.019 b1 0.23 0.32 0.009 0.012 C 0.50 0.020 c1 45 (typ.) D 12.60 13.00 0.496 0.512 E 10.00 10.65 0.393 0.419 e 1.27 0.050 e3 11.43 0.450 F 7.40 7.60 0.291 0.299 L 0.50 1.27 0.19 0.050 M 0.75 0.029 S 8 (max.) P013L SO-20 MECHANICAL DATA ST75C185

DIM. mm inch A 1.1 0.433 b 0.19 0.30 0.0075 0.0118 c 0.09 0.2 0.0035 0.0079 e 0.65 BSC 0.0256 BSC o 4o 8o 0o 4o 8o c Eb A2A D PIN 1 IDENTIFICATION A1 LKe TSSOP20 MECHANICAL DATA ST75C185

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