ST3232 3 to 5.5V, Low power, up to 400Kbps RS-232 Drivers and Receivers Feature summary ■ 300µA supply current ■ 300Kbps minimum guaranteed data rate ■ 6V/µs minimum guaranteed slew rate ■ Meet EIA/TIA-232 specifications down to 3V ■ Available in DIP-16, SO-16, SO-16 large and TSSOP16 DIP-16 SO-16 Description The ST3232 is a 3V powered EIA/TIA-232 and V.28/V.24 communication interface with low power requirements, high data-rate capabilities. SO-16 Large ST3232 has a proprietary low dropout transmitter output stage providing true RS-232 performance from 3 to 5.5V supplies. The device requires only four small 0.1mF standard external capacitors for operations from 3V supply. TSSOP16 The device is guaranteed to run at data rates of 250Kbps while maintaining RS-232 output levels. Typical applications are Notebook, Subnotebook and Palmtop Computers, Battery Powered Equipment, Hand-Held Equipment, Peripherals and Printers. The ST3232 has two receivers and two drivers. Order code Part number Temp. range Package Packaging ST3232CN 0 to 70 °C DIP-16 25parts per tube / 40tube per box ST3232BN -40 to 85 °C DIP-16 25parts per tube / 40tube per box ST3232CDR 0 to 70 °C SO-16 (Tape & Reel) 2500 parts per reel ST3232BDR -40 to 85 °C SO-16 (Tape & Reel) 2500 parts per reel ST3232CWR 0 to 70 °C SO-16 Large (Tape & Reel) 1000 parts per reel ST3232BWR -40 to 85 °C SO-16 Large (Tape & Reel) 1000 parts per reel ST3232CTR 0 to 70 °C TSSOP16 (Tape & Reel) 2500 parts per reel ST3232BTR -40 to 85 °C TSSOP16 (Tape & Reel) 2500 parts per reel October 2006 Rev 9 1/19 www.st.com 19 Contents ST3232 Contents 1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2/19 ST3232 Pin configuration 1 Pin configuration Figure 1. Pin connection Table 1. Pin description Pln N° Symbol Name and function 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 Absolute maximum ratings ST3232 2 Absolute maximum ratings Table 2. Absolute maximum ratings Symbol Parameter Unit -0.3 to 6 V VCC Supply voltage V+ Doubled voltage terminal (VCC - 0.3) to 7 V V- Inverted voltage terminal 0.3 to -7 V 13 V -0.3 to 6 V ± 25 V ± 13.2 V -0.3 to (VCC + 0.3) V V+ +|V-| TIN Transmitter input voltage range RIN Receiver input voltage range TOUT Transmitter output voltage range ROUT Receiver output voltage range tSHORT Note: 4/19 Value Transmitter output short to gnd time Continuous Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. V+ and V- can have a maximum magnitude of +7V, but their absolute addition can not exceed 13 V. ST3232 Electrical characteristics 3 Electrical characteristics Table 3. Electrical characteristics (C1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C) Symbol Parameter ISUPPLY VCC Power supply current Table 4. Symbol Min. Typ. Max. Unit No Load, VCC = 3V ± 10%, TA = 25°C 0.3 1 mA No Load, VCC = 5V ± 10%, TA = 25°C 1 2 mA Logic input (C1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C) Parameter VTIL Input logic threshold low VTIH Input logic threshold high IIL Test conditions Test conditions T-IN Min. VCC = 3.3V Max. Unit 0.8 V 2 V VCC = 5V Input leakage current Typ. (1) 2.4 ± 0.01 T-IN ±1 µA 1. Transmitter input hysteresis is typically 250mV. Table 5. Symbol Transmitter (C1 - C4 = 0.1µF tested at 3.3V±10%, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C) Parameter Test conditions Min. Typ. Max. Unit VTOUT Output voltage swing All transmitter outputs are loaded with 3KΩ to GND ±5 ± 5.4 V RTOUT Transmitter output resistance VCC = V+ = V- = 0V, VOUT = ± 2V 300 10M Ω Output short circuit current VCC = 3V or 5V, VOUT = ± 12 ITSC Table 6. ± 60 mA Receiver (C1 - C4 = 0.1µF tested at 3.3V±10%, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C) Symbol Parameter VRIN Receiver input voltage operating range VRIL RS-232 Input threshold low VRIH RS-232 Input threshold high Test conditions Min. Typ. -25 TA = 25°C, VCC = 3.3V 0.6 1.1 TA = 25°C, VCC = 5V 0.8 1.5 Max. Unit 25 V V TA = 25°C, VCC = 3.3V 1.5 2.4 TA = 25°C, VCC = 5V 1.8 2.4 VRIHYS Input hysteresis RRIN Input resistance TA = 25°C VROL TTL/CMOS Output voltage low IOUT = 1.6mA VROH TTL/CMOS Output voltage high IOUT = -1mA V 0.3 3 VCC-0.6 5 VCC-0.1 V 7 kΩ 0.4 V V 5/19 Electrical characteristics Table 7. ST3232 Timing characteristics (C1 - C4 = 0.1µF tested at 3.3V±10%, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C) Symbol Parameter Test conditions Min. Typ. Max. Unit 300 400 Kbps Data transfer rate RL = 3KΩ, CL2= 1000pF one transmitter switching tPHLR tPLHR Propagation delay input to output RXIN = RXOUT, CL = 150pF 0.2 µs |tPHLT - tTHL| Transmitter propagation delay difference (Note 1) 100 ns |tPHLR - tTHR| Receiver propagation delay difference 50 ns DR SRT Note: 6/19 Transition slew rate 1 TA = 25°C RL = 3KΩ to 7KΩ VCC = 3.3V measured from +3V to -3V or -3V to +3V CL = 150pF to 1000pF CL = 150pF to 2500pF Transmitter Skew is measured at the transmitter zero cross points 6 4 30 30 V/µs V/µs ST3232 4 Application Application Figure 2. Table 8. Application circuits Capacitance value (µF) VCC C1 C2 C3 C4 Cbypass 3.0 to 3.6 0.1 0.1 0.1 0.1 0.1 4.5 to 5.5 0.047 0.33 0.33 0.33 0.33 7/19 Typical performance characteristics ST3232 5 Typical performance characteristics Figure 3. (unless otherwise specified TJ = 25°C) Driver voltage transfer Figure 4. characteristics for transmitter input Driver voltage transfer characteristics for receiver inputs Output current vs output low voltage Output current vs output low voltage Figure 5. 8/19 Figure 6. ST3232 Typical performance characteristics Figure 7. Output current vs output high voltage Figure 9. Receiver input resistance Figure 8. Output current vs output high voltage 9/19 Package mechanical data 6 ST3232 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 ST3232 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 ST3232 SO-16 MECHANICAL DATA DIM. mm. MIN. TYP A a1 inch MAX. MIN. TYP. 1.75 0.1 0.068 0.25 a2 MAX. 0.004 0.010 1.64 0.063 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 0.050 M S 0.62 0.024 8° (max.) 0016020D 12/19 ST3232 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 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 8 0.029 ˚ (max.) PO13I 13/19 Package mechanical data ST3232 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 ST3232 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 ST3232 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 ST3232 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 ST3232 7 Revision history Table 9. Revision history Date Revision 06-Sep-2006 8 Order codes has been updated and new template. 25-Oct-2006 9 Order codes has been updated. 18/19 Changes ST3232 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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