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| ST3232B ST3232C 3 to 5.5 V, low power, up to 400 kbps RS-232 drivers and receivers Features 300 A supply current 300 kbps minimum guaranteed data rate 6 V/s minimum guaranteed slew rate Meet EIA/TIA-232 specifications down to 3 V Available in SO-16, SO-16 large and TSSOP16 SO-16 SO-16 Large Description The ST3232 is a 3 V powered EIA/TIA-232 and V.28/V.24 communication interface with low power requirements, high data-rate capabilities. ST3232 has a proprietary low dropout transmitter output stage providing true RS-232 performance from 3 to 5.5 V supplies. The device requires only four small 0.1 mF standard external capacitors for operations from 3 V supply. The ST3232 has two receivers and two drivers. The device is guaranteed to run at data rates of 250 kbps while maintaining RS-232 output levels. Typical applications are Notebook, Subnotebook and Palmtop Computers, Battery Powered TSSOP16 Equipment, Hand-Held Equipment, Peripherals and Printers. Table 1. Device summary Temp. range 0 to 70 C -40 to 85 C 0 to 70 C -40 to 85 C 0 to 70 C -40 to 85 C Package SO-16 (tape and reel) SO-16 (tape and reel) SO-16 Large (tape and reel) SO-16 Large (tape and reel) TSSOP16 (tape and reel) TSSOP16 (tape and reel) Packaging 2500 parts per reel 2500 parts per reel 1000 parts per reel 1000 parts per reel 2500 parts per reel 2500 parts per reel Order codes ST3232CDR ST3232BDR ST3232CWR ST3232BWR ST3232CTR ST3232BTR February 2008 Rev 11 1/18 www.st.com 18 Contents ST3232B - ST3232C Contents 1 2 3 4 5 6 7 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2/18 ST3232B - ST3232C Pin configuration 1 Figure 1. Pin configuration Pin connection Table 2. Pin description Symbol C1+ V+ C1C2+ C2VT2OUT R2IN R2OUT T2IN T1IN R1OUT R1IN T1OUT GND VCC Name and function Positive terminal for the first charge pump capacitor Doubled voltage terminal Negative terminal for the first charge pump capacitor Positive terminal for the second charge pump capacitor Negative terminal for the second charge pump capacitor Inverted voltage terminal Second transmitter output voltage Second receiver input voltage Second receiver output voltage Second transmitter input voltage First transmitter input voltage First receiver output voltage First receiver input voltage First transmitter output voltage Ground Supply voltage Pin n 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 3/18 Absolute maximum ratings ST3232B - ST3232C 2 Table 3. Symbol VCC V+ VV+ +|V-| TIN RIN TOUT ROUT tSHORT Absolute maximum ratings Absolute maximum ratings Parameter Supply voltage Doubled voltage terminal Inverted voltage terminal Value -0.3 to 6 (VCC - 0.3) to 7 0.3 to -7 13 Transmitter input voltage range Receiver input voltage range Transmitter output voltage range Receiver output voltage range Transmitter output short to gnd time -0.3 to 6 25 13.2 -0.3 to (VCC + 0.3) Continuous Unit V V V V V V V V Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Externally applied V+ and V- can have a maximum magnitude of +7 V, but their absolute addition can not exceed 13 V. Running on internal charge pump, intrinsic self limitation allows exceeding those values without any damage. Startup voltage sequence (VCC, then V+, then V-) is critical, therefore it is not recommended to use this device using externally applied voltage to V+ and V-. 4/18 ST3232B - ST3232C Electrical characteristics 3 Table 4. Symbol ISUPPLY Electrical characteristics Electrical characteristics (C1 - C4 = 0.1 F, VCC = 3 V to 5.5 V, TA = -40 to 85 C, unless otherwise specified. Typical values are referred to TA = 25 C) Parameter VCC Power supply current Test conditions No Load, VCC = 3V 10%, TA = 25C No Load, VCC = 5V 10%, TA = 25C Min. Typ. 0.3 1 Max. 1 2 Unit mA mA Table 5. Symbol VTIL VTIH IIL Logic input (C1 - C4 = 0.1 F, VCC = 3 V to 5.5 V, TA = -40 to 85 C, unless otherwise specified. Typical values are referred to TA = 25 C) Parameter Input logic threshold low Input logic threshold high Input leakage current T-IN Test conditions (1) Min. Typ. Max. 0.8 Unit V V VCC = 3.3V VCC = 5V T-IN 2 2.4 0.01 1 A 1. Transmitter input hysteresis is typically 250mV. Table 6. Symbol VTOUT RTOUT ITSC Transmitter (C1 - C4 = 0.1 F tested at 3.3 V 10 %, VCC = 3 V to 5.5 V, TA = -40 to 85 C, unless otherwise specified. Typical values are referred to TA = 25 C) Parameter Output voltage swing Transmitter output resistance Output short circuit current Test conditions All transmitter outputs are loaded with 3k to GND VCC = V+ = V- = 0V, VOUT = 2V VCC = 3V or 5V, VOUT = 12 Min. 5 300 Typ. 5.4 10M 60 Max. Unit V mA Table 7. Symbol VRIN VRIL Receiver (C1 - C4 = 0.1 F tested at 3.3 V 10 %, VCC = 3 V to 5.5 V, TA = -40 to 85 C, unless otherwise specified. Typical values are referred to TA = 25 C) Parameter Receiver input voltage operating range RS-232 Input threshold low TA = 25C, VCC = 3.3V TA = 25C, VCC = 5V RS-232 Input threshold high Input hysteresis Input resistance TTL/CMOS Output voltage low TA = 25C IOUT = 1.6mA VCC-0.6 VCC-0.1 3 TA = 25C, VCC = 3.3V TA = 25C, VCC = 5V Test conditions Min. -25 0.6 0.8 1.1 V 1.5 1.5 1.8 0.3 5 7 0.4 2.4 V 2.4 V k V V 5/18 Typ. Max. 25 Unit V VRIH VRIHYS RRIN VROL VROH TTL/CMOS Output voltage high IOUT = -1mA Electrical characteristics ST3232B - ST3232C Table 8. Symbol DR tPHLR tPLHR |tPHLT - tTHL| |tPHLR - tTHR| Timing characteristics (C1 - C4 = 0.1 F tested at 3.3 V 10 %, VCC = 3 V to 5.5 V, TA = -40 to 85 C, unless otherwise specified. Typical values are referred to TA = 25 C) Parameter Data transfer rate Propagation delay input to output Transmitter propagation delay difference Receiver propagation delay difference TA = 25C RL = 3k to 7k VCC = 3.3V measured from +3V to -3V or -3V to +3V CL = 150pF to 1000pF CL = 150pF to 2500pF Test conditions , RL = 3k CL2= 1000pF one transmitter switching RXIN = RXOUT, CL = 150pF (Note 1) Min. 300 Typ. 400 0.2 100 50 Max. Unit kbps s ns ns SRT Transition slew rate 6 4 30 30 V/s V/s Note: 1 Transmitter skew is measured at the transmitter zero cross points. 6/18 ST3232B - ST3232C Application 4 Figure 2. Application Application circuits Table 9. VCC Capacitance value (F) C1 0.1 0.047 C2 0.1 0.33 C3 0.1 0.33 C4 0.1 0.33 Cbypass 0.1 0.33 3.0 to 3.6 4.5 to 5.5 7/18 Typical performance characteristics ST3232B - ST3232C 5 Figure 3. Typical performance characteristics (unless otherwise specified TJ = 25 C) Driver voltage transfer Figure 4. characteristics for transmitter input Driver voltage transfer characteristics for receiver inputs Figure 5. Output current vs output low voltage Figure 6. Output current vs output low voltage 8/18 ST3232B - ST3232C Figure 7. Output current vs output high voltage Figure 8. Typical performance characteristics Output current vs output high voltage Figure 9. Receiver input resistance 9/18 Package mechanical data ST3232B - ST3232C 6 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK(R) 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. 10/18 ST3232B - ST3232C Package mechanical data SO-16 mechanical data Dim. A a1 a2 b b1 C c1 D E e e3 F G L M S 3.8 4.6 0.5 9.8 5.8 1.27 8.89 4.0 5.3 1.27 0.62 8 (max.) 0.149 0.181 0.019 10 6.2 0.35 0.19 0.5 45 (typ.) 0.385 0.228 0.050 0.350 0.157 0.208 0.050 0.024 0.393 0.244 0.1 mm. Min. Typ. Max. 1.75 0.25 1.64 0.46 0.25 0.013 0.007 0.019 0.004 Min. inch. Typ. Max. 0.068 0.010 0.063 0.018 0.010 0016020D 11/18 Package mechanical data ST3232B - ST3232C SO-16L mechanical data Dim. A a1 a2 b b1 C c1 D E e e3 F G L M S 0.5 1.27 0.75 8 (max.) 0.020 0.050 0.029 7.4 10.1 10.0 1.27 8.89 7.6 0.291 10.5 10.65 0.35 0.23 0.5 45 (typ.) 0.397 0.393 0.050 0.350 0.300 0.413 0.419 0.1 mm. Min. Typ. Max. 2.65 0.2 2.45 0.49 0.32 0.014 0.009 0.020 0.004 Min. inch. Typ. Max. 0.104 0.008 0.096 0.019 0.012 PO13I 12/18 ST3232B - ST3232C Package mechanical data TSSOP16 mechanical data mm. Dim. Min. A A1 A2 b c D E E1 e K L 0 0.45 0.60 0.05 0.8 0.19 0.09 4.9 6.2 4.3 5 6.4 4.4 0.65 BSC 8 0.75 0 0.018 0.024 1 Typ. Max. 1.2 0.15 1.05 0.30 0.20 5.1 6.6 4.48 0.002 0.031 0.007 0.004 0.193 0.244 0.169 0.197 0.252 0.173 0.0256 BSC 8 0.030 0.004 0.039 Min. Typ. Max. 0.047 0.006 0.041 0.012 0.0079 0.201 0.260 0.176 inch. A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0080338D 13/18 Package mechanical data ST3232B - ST3232C Tape & reel SO-16 mechanical data mm. Dim. Min. A C D N T Ao Bo Ko Po P 6.45 10.3 2.1 3.9 7.9 12.8 20.2 60 22.4 6.65 10.5 2.3 4.1 8.1 0.254 0.406 0.082 0.153 0.311 Typ. Max. 330 13.2 0.504 0.795 2.362 0.882 0.262 0.414 0.090 0.161 0.319 Min. Typ. Max. 12.992 0.519 inch. 14/18 ST3232B - ST3232C Package mechanical data Tape & reel SO-16L mechanical data mm. Dim. Min. A C D N T Ao Bo Ko Po P 10.8 10.7 2.9 3.9 11.9 12.8 20.2 60 22.4 11.0 10.9 3.1 4.1 12.1 0.425 0.421 0.114 0.153 0.468 Typ. Max. 330 13.2 0.504 0.795 2.362 0.882 0.433 0.429 0.122 0.161 0.476 Min. Typ. Max. 12.992 0.519 inch. 15/18 Package mechanical data ST3232B - ST3232C Tape & reel TSSOP16 mechanical data mm. Dim. Min. A C D N T Ao Bo Ko Po P 6.7 5.3 1.6 3.9 7.9 12.8 20.2 60 22.4 6.9 5.5 1.8 4.1 8.1 0.264 0.209 0.063 0.153 0.311 Typ. Max. 330 13.2 0.504 0.795 2.362 0.882 0.272 0.217 0.071 0.161 0.319 Min. Typ. Max. 12.992 0.519 inch. 16/18 ST3232B - ST3232C Revision history 7 Table 10. Date Revision history Document revision history Revision 8 9 10 11 Changes Order codes has been updated and new template. Order codes has been updated. Added note on Table 3. Modified: Table 1 on page 1. 06-Sep-2006 25-Oct-2006 21-Jan-2008 08-Feb-2008 17/18 ST3232B - ST3232C Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST's terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST'S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER'S OWN RISK. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. 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