ST232A Very high speed, ultra low power consumption 5V Powered RS-232 drivers and receivers Feature summary ■ Supply voltage range: 4.5 to 5.5V ■ Supply current no load (typ): 1.5mA ■ Transmitter output voltage swing (typ): ± 9V ■ Transition slew rate (typ.): 12V/µs ■ Receiver propagation delay (typ.): 0.1µs ■ Receiver input voltage range: ± 30V ■ Data rate (typ.): 400Kbp/s ■ Operating temperature range: – -40 to 85 °C, – 0 to 70°C DIP SOP SOP Large TSSOP Description . The ST232A is a 2 driver, 2 receiver device following EIA/TIA-232 and V.28 communication standard. It is particularly suitable for applications where ±12V is not available. The ST232A uses a single 5V power supply and only four external capacitors (0.1µF). Typical applications are in: Portable Computers, Low Power Modems, Interfaces Translation, Battery Powered RS-232 Networks. Order codes Part number Temperature Range Package Packaging ST232ACN ST232ABN ST232ACD ST232ABD ST232ACDR ST232ABDR ST232ACW ST232ABW ST232ACWR ST232ABWR ST232ACTR ST232ABTR 0 to 70 °C -40 to 85 °C 0 to 70 °C -40 to 85 °C 0 to 70 °C -40 to 85 °C 0 to 70 °C -40 to 85 °C 0 to 70 °C -40 to 85 °C 0 to 70 °C -40 to 85 °C DIP-16 DIP-16 SO-16 (Tube) SO-16 (Tube) SO-16 (Tape & Reel) SO-16 (Tape & Reel) SO-16 Large (Tube) SO-16 Large (Tube) SO-16 Large (Tape & Reel) SO-16 Large (Tape & Reel) TSSOP16 (Tape & Reel) TSSOP16 (Tape & Reel) 25parts per tube / 40tube per box 25parts per tube / 40tube per box 50parts per tube / 20tube per box 50parts per tube / 20tube per box 2500 parts per reel 2500 parts per reel 49 parts per tube / 25 tube per box 49 parts per tube / 25 tube per box 1000 parts per reel 1000 parts per reel 2500 parts per reel 2500 parts per reel October 2006 Rev. 7 1/19 www.st.com 19 ST232A Contents 1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2/19 ST232 Pin configuration 1 Pin configuration Figure 1. Pin connections (top view) Table 1. Pin description PlN N° SYMBOL NOTE 1 C1+ Positive terminal for the first charge pump capacitor 2 V+ Doubled voltage terminal 3 C1- Negative terminal for the first charge pump capacitor 4 C2+ Positive terminal for the second charge pump capacitor 5 C2- Negative terminal for the second charge pump capacitor 6 V- Inverted voltage terminal 7 T2OUT 8 R2IN 9 R2OUT Second receiver output voltage 10 T2IN Second transmitter input voltage 11 T1IN First transmitter input voltage 12 R1OUT First receiver output voltage 13 R1IN 14 T1OUT 15 GND Ground 16 VCC Supply voltage Second transmitter output voltage Second receiver input voltage First receiver input voltage First transmitter output voltage 3/19 Maximum ratings ST232A 2 Maximum ratings Table 2. Absolute maximum ratings Symbol Parameter Value Unit -0.3 to 6 V VCC Supply voltage V+ Extra positive voltage (VCC - 0.3 to 13.2) V V- Extra negative voltage 0.3 to -13.2 V TIN Transmitter input voltage range -0.3 to (VCC + 0.3) V RIN Receiver input voltage range ± 30 V TOUT Transmitter output voltage range ± 15 V ROUT Receiver output voltage range -0.3 to (VCC + 0.3) V TSCTOUT Short circuit duration on TOUT infinite Note: 4/19 Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. ST232 Electrical characteristics 3 Electrical characteristics Table 3. Electrical characteristics (C1 - C4 = 0.1µF, VCC = 5V ± 10%, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C). Symbol ISUPPLY Table 4. Parameter Test VCC Power supply current Min. No Load, TA = 25°C Typ. Max. Unit 1.5 4 mA Transmitter electrical characteristics (C1 - C4 = 0.1µF, VCC = 5V ± 10%, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C). Symbol Parameter Test VTOUT Output voltage swing All transmitter outputs are loaded with 3KΩ to GND ITIL Logic Pull-up current TIN = 0V VTIL Input logic threshold low VTIH Input logic threshold high SRT Transition slew rate TA = 25°C, VCC = 5V RL = 3 to 7KΩ, CL = 50 to 2500pF (1) DR Data rate RTOUT Min. Typ. ±5 ±9 5 0.8 Max. Unit V 40 1.4 µA V 1.4 2 V 6 12 30 V/µs (2) 200 400 Transmitter output resistance VCC = V+ = V- = 0V VOUT = ± 2V 300 ISC Transmitter output short circuit current One TXOUT to GND tDT Propagation delay time TTL-CMOS IN to RS-232 OUT CL = 150pF (50% to 50%) ±7 Kbits/s Ω ±22 1.3 mA 3.5 µs 1. Measured from 3V to -3V or from -3V to 3V. 2. One transmitter output is loaded with RL = 3KΩ to 7KΩ, CL = 50 to 1000pF. 5/19 Electrical characteristics Table 5. Symbol Receiver electrical characteristics (C1 - C4 = 0.1µF, VCC = 5V ± 10%, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C). Parameter VRIN Receiver input voltage operating range RRIN RS-232 Input resistance VRIL RS-232 Input threshold low VRIH RS-232 Input threshold high VRIHYS ST232A Test TA = 25°C VCC = 5V VROL TTL/CMOS Output voltage low IOUT = 3.2mA (to VCC) VROH TTL/CMOS Output voltage high IOUT = -1mA (to GND) ISCR Receiver output short circuit current tDR Propagation delay time CL = 150pF (1) 6/19 Typ. -30 RS-232 Input hysteresis 1. RS-232 in to TTL-CMOS out (from 50% to 50%) Min. 3 5 0.8 1.3 0.2 Max. Unit 30 V 7 KΩ V 1.8 2.4 V 0.5 1 V 0.2 0.4 V 3.5 VCC-0.2 to GND 2 10 to VCC 10 30 V mA 0.1 0.5 µs ST232 Typical application 4 Typical application Figure 2. Application circuit (1) (2) 1. C1-4 capacitors can even be 1µF ones 2. C1-4 can be common or biased capacitors Table 6. Capacitance value (µF) C1 C2 C3 C4 C5 0.1 0.1 0.1 0.1 0.1 7/19 Typical performance characteristics ST232A 5 Typical performance characteristics Figure 3. (Unless otherwise specified TJ = 25°C). Driver voltage transfer Figure 4. characteristics Drive short circuit output current vs temperature Receiver threshold vs supply voltage Driver output capability current vs output voltage Figure 5. 8/19 Figure 6. ST232 Figure 7. Typical performance characteristics Driver short circuit supply current vs temperature Figure 8. Receiver threshold vs temperature 9/19 Package mechanical data 6 ST232A Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. 10/19 ST232 Package mechanical data Plastic DIP-16 (0.25) MECHANICAL DATA mm. inch DIM. MIN. a1 0.51 B 0.77 TYP MAX. MIN. TYP. MAX. 0.020 1.65 0.030 0.065 b 0.5 0.020 b1 0.25 0.010 D 20 0.787 E 8.5 0.335 e 2.54 0.100 e3 17.78 0.700 F 7.1 0.280 I 5.1 0.201 L Z 3.3 0.130 1.27 0.050 P001C 11/19 Package mechanical data ST232A SO-16 MECHANICAL DATA DIM. mm. MIN. TYP A a1 inch MAX. MIN. TYP. 1.75 0.1 0.25 b 0.35 b1 0.19 a2 0.068 0.004 0.010 0.46 0.013 0.018 0.25 0.007 0.010 1.64 C MAX. 0.063 0.5 0.019 c1 45° (typ.) D 9.8 10 0.385 0.393 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 8.89 0.350 F 3.8 4.0 0.149 0.157 G 4.6 5.3 0.181 0.208 L 0.5 1.27 0.019 0.050 M S 0.62 0.024 8° (max.) 0016020D 12/19 ST232 Package mechanical data SO-16L MECHANICAL DATA DIM. mm. MIN. TYP A a1 inch MAX. MIN. TYP. 2.65 0.1 0.104 0.2 a2 MAX. 0.004 0.008 2.45 0.096 b 0.35 0.49 0.014 0.019 b1 0.23 0.32 0.009 0.012 C 0.5 0.020 c1 45˚ (typ.) D 10.1 10.5 0.397 0.413 E 10.0 10.65 0.393 0.419 e 1.27 e3 F 0.050 8.89 0.350 7.4 7.6 0.291 0.300 0.5 1.27 0.020 0.050 G L M S 0.75 8 0.029 ˚ (max.) PO13I 13/19 Package mechanical data ST232A TSSOP16 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. MAX. 1.2 A1 0.05 A2 0.8 b 0.047 0.15 0.002 0.004 0.006 1.05 0.031 0.039 0.041 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0079 D 4.9 5 5.1 0.193 0.197 0.201 E 6.2 6.4 6.6 0.244 0.252 0.260 E1 4.3 4.4 4.48 0.169 0.173 0.176 1 e 0.65 BSC K 0˚ L 0.45 A 0.60 0.0256 BSC 8˚ 0˚ 0.75 0.018 8˚ 0.024 0.030 A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0080338D 14/19 ST232 Package mechanical data Tape & Reel SO-16 MECHANICAL DATA mm. inch DIM. MIN. A TYP MAX. MIN. 330 MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 TYP. 0.504 22.4 0.519 0.882 Ao 6.45 6.65 0.254 0.262 Bo 10.3 10.5 0.406 0.414 Ko 2.1 2.3 0.082 0.090 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.319 15/19 Package mechanical data ST232A Tape & Reel SO-16L MECHANICAL DATA mm. inch DIM. MIN. A MAX. MIN. 330 13.2 TYP. MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 16/19 TYP 0.504 22.4 0.519 0.882 Ao 10.8 11.0 0.425 0.433 Bo 10.7 10.9 0.421 0.429 Ko 2.9 3.1 0.114 0.122 Po 3.9 4.1 0.153 0.161 P 11.9 12.1 0.468 0.476 ST232 Package mechanical data Tape & Reel TSSOP16 MECHANICAL DATA mm. inch DIM. MIN. A TYP MAX. MIN. 330 MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 TYP. 0.504 22.4 0.519 0.882 Ao 6.7 6.9 0.264 0.272 Bo 5.3 5.5 0.209 0.217 Ko 1.6 1.8 0.063 0.071 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.319 17/19 Revision history ST232A 7 Revision history Table 7. Revision history Date Revision 27-Oct-2006 7 18/19 Changes Order codes has been updated and document reformatted. ST232 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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