ST232A VERY HIGH SPEED, ULTRA LOW POWER CONSUMPTION 5V POWERED RS-232 DRIVERS AND RECEIVERS ■ ■ ■ ■ ■ ■ ■ ■ SUPPLY VOLTAGE RANGE: 4.5 TO 5.5V SUPPLY CURRENT NO LOAD (TYP): 1.5mA TRASMITTER 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 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 ST232 uses a single 5V power supply and only four external capacitors (0.1µF). Typical application are in: Portable Computers, Low Power Modems, Interfaces Translation, Battery Powered RS-232 Networks. DIP SOP SOP Large TSSOP ORDERING CODES Type Temperature Range Package Comments 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 49parts per tube / 25tube per box 49parts per tube / 25tube per box 2500 parts per reel 2500 parts per reel 50parts per tube / 20tube per box 50parts per tube / 20tube per box 1000 parts per reel 1000 parts per reel 2500 parts per reel 2500 parts per reel June 2001 1/10 ST232A PIN CONFIGURATION PIN DESCRIPTION PlN N° SYMBOL NAME AND FUNCTION 1 C1+ Positive Terminal for the first Charge Pump Capacitor 2 3 V+ C1- Doubled Voltage Terminal Negative Terminal for the first Charge Pump Capacitor 4 C2+ Positive Terminal for the second Charge Pump Capacitor 5 C2- 6 Negative Terminal for the second Charge Pump Capacitor 7 VT2OUT 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 VCC 16 Inverted Voltage Terminal Second Transmitter Output Voltage Second Receiver Input Voltage First Receiver Input Voltage First Transmitter Output Voltage Ground Supply Voltage ABSOLUTE MAXIMUM RATINGS Symbol VCC Parameter Supply Voltage Value Unit -0.3 to 6 V V+ Extra Positive Voltage (VCC -0.3) to 13.2 V VTIN Extra Negative Voltage Transmitter Input Voltage Range 0.3 to -13.2 -0.3 to (VCC + 0.3) V RIN V 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 Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. 2/10 ST232A ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1µF, V CC = 5V ± 10%, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C) Symbol Parameter ISUPPLY VCC Power Supply Current Test Conditions Min. Typ. Max. Unit 1.5 4 mA Min. Typ. Max. Unit ±5 ±9 0.8 1.4 No Load TRANSMITTER ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1µF, V CC = 5V ± 10%, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C) Symbol Parameter VTOUT Output Voltage Swing ITIL Logic Pull-Up Current VTIL Input Logic Threshold Low VTIH Input Logic Threshold High SRT Transition Slew Rate DR RTOUT ISC tdT Data Rate Transmitter Output Resistance Transmitter Output Short Circuit Current Propagation Delay Time Test Conditions All Transmitter outputs are loaded with 3KΩ to GND TIN = 0V TA = 25°C, RL = 3 to 7KΩ, (Note1) (Note 2) VCC = 5V CL = 50 to 2500pF VCC = V+ = V- = 0V VOUT = ± 2V one TXOUT to GND 5 V 40 µA V 1.4 2 V 6 12 30 V/µs 200 400 Kbits/s Ω 300 ±7 TTL-CMOS IN to RS-232 OUT CL = 150pF (50% to 50%) ± 22 mA 1.3 3.5 µs Typ. Max. Unit 30 V 7 KΩ Note 1: Measured from 3V to -3V or from -3V to 3V. Note2: One trasmitter output is loaded with RL = 3KΩ to 7KΩ, CL = 50 to 1000pF RECEIVER ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1µF, V CC = 5V ± 10%, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C) Symbol VRIN RRIN Parameter Receiver Input Voltage Operating Range RS-232 Input Resistance Test Conditions -30 TA = 25°C VRIL RS-232 Input Threshold Low VRIH RS-232 Input Threshold High VRIHYS RS-232 Input Hysteresis VROL TTL/CMOS Output Voltage Low VROH TTL/CMOS Output Voltage High ISCR Receiver Output Short Circuit Current tdR Propagation Delay Time Min. VCC = 5V 3 5 0.8 1.3 0.2 IOUT = 3.2mA (to VCC) V 1.8 2.4 V 0.5 1 V 0.2 0.4 V IOUT = 1mA (to GND) 3.5 VCC-0.2 V to GND to VCC 2 10 10 30 mA mA CL = 150pF (Note 1) 0.1 0.5 µs Note 1: RS-232 IN to TTL-CMOS OUT (from 50% to 50%) 3/10 ST232A APPLICATION CIRCUITS (note 1, note 2) Note 1: C1-4 capacitors can even be 1µF ones. Note 2: C1-4 can be common or biased capacitors. CAPACITANCE VALUE (µF) 4/10 C1 C2. C3 C4 C5 0.1 0.1 0.1 0.1 0.1 ST232A TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified Tj = 25°C) Figure 1 : Driver Voltage Transfer Characteristics Figure 4 : Driver Output Capability Current vs Output Voltage Figure 2 : Drive Short Circuit Output Current vs Temperature Figure 5 : Driver Short Circuit Supply Current vs Temperature Figure 3 : Receiver Threshold vs Supply Voltage Figure 6 : Receiver Threshold vs Temperature 5/10 ST232A 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 6/10 ST232A SO-16 MECHANICAL DATA DIM. mm. MIN. TYP A a1 inch MAX. MIN. TYP. 1.75 0.1 0.068 0.2 a2 MAX. 0.003 0.007 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 C 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 M S 0.62 0.050 0.024 8° (max.) PO13H 7/10 ST232A 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 0.050 e3 8.89 0.350 F 7.4 7.6 0.291 0.300 0.5 1.27 0.020 0.050 G L M S 0.75 0.029 8° (max.) PO13I 8/10 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 0.0089 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 9/10 ST232A 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. 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