ST75285

ST75285 STMICROELECTRONICS | Alldatasheet

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Technical content

■ 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/AT TM AND COMPATIBLES ■ DESIGNED TO SUPPORT DATA RATES UP TO 120 Kbps

DESCRIPTION

The ST75285 contains six drivers and ten 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/AT TM and compatibles. The bipolar circuits and processing of the ST75285 provides a rugged low-cost solution for this function at the expense of quiescent power and external passive components relative to the ST75C185. The ST75285 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 ST75285 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 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. It allows space saving in applications where two ST75185 are needed. ORDERING CODES Type Temperature Range Package Comments ST75285CTR 0 to 70 °C TSSOP38 (Tape & Reel) 2500 parts per reel ST75285 MULTIPLE RS-232 DRIVERS AND RECEIVERS TSSOP

PlN N° SYMBOL NAME AND FUNCTION 1V DD Supply Voltage (+12V)

2 RIN1 First Receiver Input

3 RIN2 Second Receiver Input

4 RIN3 Third Receiver Input

5 TOUT1 First Driver Output

6 TOUT2 Second Driver Output

7 RIN4 Fourth Receiver Input

8 TOUT3 Third Driver Output

9 RIN5 Fifth Receiver Input

CC Supply Voltage (-12V)

11 RIN6 Sixth Receiver Input

12 TOUT4 Fourth Driver Output

13 RIN7 Seventh Receiver Input

14 TOUT5 Fifth Driver Output

15 TOUT6 Sixth Driver Output

16 RIN8 Eighth Receiver Input

17 RIN9 Nineth Receiver Input

18 RIN10 Tenth Receiver Input

DD Supply Voltage (-12V)

20 V SS Supply Voltage (+5V)

21 ROUT10 Tenth Receiver Ouput

22 ROUT9 Nineth Receiver Ouput

23 ROUT8 Eighth Receiver Ouput

24 TIN6 Sixth Driver Input

25 TIN5 Fifth Driver Input

26 ROUT7 Seventh Receiver Ouput

27 TIN4 Fourth Driver Input

28 ROUT6 Sixth Receiver Output

29 GND Ground

30 ROUT5 Fifth Receiver Output

31 TIN3 Third Driver Input

32 ROUT4 Fourth Receiver Output

33 TIN2 Second Driver Input

34 TIN1 First Driver Input

35 ROUT3 Third Receiver Ouput

36 ROUT2 Second Receiver Ouput

37 ROUT1 First Receiver Ouput

SS Supply Voltage (+5V)

PIN CONNECTION IEC LOGIC SYMBOL AND LOGIC DIAGRAM ABSOLUTE MAXIMUM RATINGS OVER OPERATING FREE-AIR TEMPERATURE RANGE 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 (*) This is the reverse of the traditional junction-case thermal resistance RtJ-C Symbol Parameter Value Unit VDD Supply Voltage (Note 1) -0.3 to 15 V VSS Supply Voltage (Note 1) 0.3 to -15 V VCC Supply Voltage (Note 1) -0.3 to 10 V VI Input Voltage Range (DRIVER) -15 to 7 V VI Input Voltage Range (RECEIVER) -30 to 30 V VO Output Voltage Range (DRIVER) -15 to 15 V IO Receiver Low Level Output Current 20 mA P D Continuous Total Power Dissipation See dissipation Rating Table TA Operating Free-Air Tempereature Range 0t o7 0 ° C Tstg Storage Temperature Range -65 to + 150 °C ESD Human Body Model >2 kV TL Lead Temperature 1.6mm from case for 10 sec 260 °C Package Power Rating at TA ≤ 25°C Derating Factor above TA = 25°C (*) Power Rating at TA ≤ 85°C TSSOP (T) 1277 mW 10.2 mW/°C 644 mW

RECOMMENDED OPERATING CONDITIONS SUPPLY CURRENTS DRIVER ELECTRICAL CHARACTERISTICS OVER OPERATING FREE-AIR TEMPERATURE RANGE (VDD =9 V ,VSS =- 9 V ,VCC = 5V, unless otherwise specified) 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. Symbol Parameter Min Max Unit VDD Supply Voltage 7.5 15 V VSS Supply Voltage -7.5 -15 V VCC Supply Voltage 4.5 5.5 V VI Driver Input Voltage 0 VCC V IOH High Level Output Current DRIVER -6 mARECEIVER -0.5 IOL Low Level Output Current DRIVER 6 mARECEIVER 16 TA Operating Free-Air Tempereature 07 0 ° C Symbol Parameter Test Conditions Value Unit VDD VSS Min. Typ. Max. IDD Supply Current from VDD 9 -9 No load. All inputs at 1.9V 22 mA 12 -12 28 15 -15 32 9 -9 No load. All inputs at 0.8V 9m A 12 -12 11 15 -15 12 I SS Supply Current from VSS 9 -9 No load. All inputs at 1.9V -22 mA 12 -12 -28 15 -15 -32 9 -9 No load. All inputs at 0.8V -6.4 mA 12 -12 -6.4 15 -15 -6.4 I CC Supply Current from VCC No load. All inputs at 5V VCC =5 V 60 mA Symbol Parameter Test Conditions Value Unit Min. Typ. Max. VOH High Level Output Voltage VIL=0 . 8V RL =3 KΩ (See Figure 1) 6 7.5 V V OL Low Level Output Voltage (Note 3) VIH =1 . 9V RL =3 KΩ (See Figure 1) -7.5 -6 V IIH High Level Input Current VI= 5 V (See Figure 2) 10 µA IIL Low Level Input Current VI= 0 V (See Figure 2) −1.6 mA IOS(H) High Level Short Circuit Output Current (Note 4) VIL=0 . 8V VO = 0 V (See Figure 1) -4.5 −12 −19.5 mA IOS(L) Low Level Short Circuit Output Current VIH =2V V O = 0 V (See Figure 1) 4.5 12 19.5 mA R O Output Resistance V DD =V SS =V CC =0V V O = -2 to 2 V (Note 5) 300 Ω

DRIVER SWITCHING CHARACTERISTICS (VDD = 12V, VSS = -12V, VCC =5 V ,TA =2 5° C ) 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 All typical values are at TA = 25°C, VCC = 5V, VDD = 9V and VSS=-9V RECEIVER SWITCHING CHARACTERISTICS (VDD =1 2 V ,VSS =- 1 2 V ,VCC =5 V TA = 25°C) 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 5p F (See Figure 3, 4) 200 400 ns tPHL Propagation Delay Time, High to Low Level Output R L =3t o7K Ω C L =1 5p F (See Figure 3, 4) 50 100 ns tTLH Transition Time Low to High Level Output R L =3t o7K Ω C L =1 5p F (See Figure 3, 4) 60 100 ns R L =3t o7K Ω C L = 2500 pF (Note 6, See Figure 3, 4) 1.7 2.5 µs tTHL Transition Time High to Low Level Output R L =3t o7K Ω C L =1 5p F (See Figure 3, 4) 50 100 ns R L =3t o7K Ω C L = 2500 pF (Note 6, See Figure 3, 4) 1.5 2.5 µs Symbol Parameter Test Conditions Value Unit Min. Typ. Max. VT+ Positive Going Threshold Voltage (See Figure 6) 2.2 2.4 V VT- Negative Going Threshold Voltage TA = 25 °C (See Figure 6) 0.75 0.97 V V hys Input Hysteresis (VT+ -V T-) 0.5 V VOH High Level Output Voltage I OH = -0.5mA V IH = 0.75 V 2.6 4 5 V Inputs Open 2.6 VOL Low Level Output Voltage V I=3V I OL = 10 mA 0.2 0.45 V IIH High Level Input Current V I= 25 V (See Figure 6) 3.6 8.3 mA VI= 3 V (See Figure 6) 0.43 IIL Low Level Input Current V I= -25 V (See Figure 6) -3.6 -8.3 mA VI= -3 V (See Figure 6) -0.43 IOS Short-Circuit Output Current V I=0V V O =0V (See Figure 5) -3.4 -12 mA 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) 200 500 ns tPHL Propagation Delay Time High to Low Level Output R L =5K Ω C L =5 0p F (See Figure 6) 60 120 ns tTLH Transition Time Low to High Level Output R L =5K Ω C L =5 0p F (See Figure 6) 200 525 ns tTHL Transition Time High to Low Level Output R L =5K Ω C L =5 0p F (See Figure 6) 20 60 ns

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).

DIM. mm. inch A 1.2 0.047 A1 0.05 0.15 0.002 0.006 b 0.17 0.27 0.0067 0.011 c 0.09 0.20 0.0035 0.0079 e 0.5 0.0197 K0 ˚ 8 ˚0 ˚ 8 ˚ TSSOP38 MECHANICAL DATA c Eb A2A D PIN 1 IDENTIFICATION A1 LKe 0117861/B

DIM. mm. inch A 330 12.992 C 12.8 13.2 0.504 0.519 D 20.2 0.795 N 60 2.362 T 22.4 0.882 Ao 6.8 7 0.268 0.276 Bo 10.1 10.3 0.398 0.406 Ko 1.7 1.9 0.067 0.075 Po 3.9 4.1 0.153 0.161 P 11.9 12.1 0.468 0.476 Tape & Reel TSSOP38 MECHANICAL DATA

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