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| ST3241E 15kV ESD Protected 3 to 5.5V, 400kbps, RS-232 transceiver with auto-powerdown General features s ESD Protection for RS-232 I/O pins: 8KV IEC 1000-4-2 Contact discharge 15KV Human body model 1A Supply current achieved when in autopowerdown 250Kbps Minimum guaranteed data rate Guaranteed 6V/ms slew rate range Guaranteed mouse driveability 0.1F External capacitors Meet EIA/TIA-232 specifications down to 3V Available in SO-28, SSOP-28 and TSSOP28 packages SSOP TSSOP SOP s s s s s s s Description The ST3241E device consists of 3 drivers, 5 receivers and a dual charge-pump circuit. The device meets the requirements of EIA/TIA and V.28/V.24 communication standards providing high data rate capability and enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver input are protected to 8KV USING IEC 1000-4-2 contact discharge and 15KV using the Human Body Model. The receiver R2 is always active to implement a wake-up feature for serial port. The ST3241E has a proprietary low-dropout transmitter output stage enabling true RS-232 performance from a 3.0V to 5.5V supply with a dual charge pump. The device is guaranteed to run at data rates of 250kbps while maintaining RS-232 output levels. It is a complete serial port (3 drivers, 5 receivers) intended for notebook or subnotebook computers. Receivers R1 and R2 have extra outputs in addition to their standard outputs. These extra output are always active. Typical application are in notebook, subnotebook, palmtop computers, battery-powered equipment, hand-held equipment, peripherals and printers.. Order code Part number ST3241ECDR ST3241EBDR ST3241ECPR ST3241EBPR ST3241ECTR ST3241EBTR Temperature range 0 to 70C -40 to 85C 0 to 70C -40 to 85C 0 to 70C -40 to 85C Package SO-28 (Tape & Reel) SO-28 (Tape & Reel) SSOP-28 (Tape & Reel) SSOP-28 (Tape & Reel) TSSOP28 (Tape & Reel) TSSOP28 (Tape & Reel) Comments 1000 parts per reel 1000 parts per reel 1350 parts per reel 1350 parts per reel 2500 parts per reel 2500 parts per reel April 2006 Rev 3 1/17 www.st.com 17 Contents ST3241E Contents 1 2 3 4 5 6 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2/17 ST3241E Pin configuration 1 Figure 1. Pin configuration Pin configuration Table 1. Pin n 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Pin description Symbol C2+ C2VR1IN R2IN R3IN R4IN R5IN T1OUT T2OUT T3OUT T3IN T2IN T1IN R5OUT R4OUT R3OUT Name and function Positive terminal of inverting charge pump capacitor Negative terminal of inverting charge pump capacitor -5.5V Generated by the Charge Pump First receiver input voltage Second Receiver Input Voltage Third receiver input voltage Fourth receiver input voltage Fifth receiver input voltage First transmitter output voltage Second transmitter output voltage Third transmitter output voltage Third transmitter input voltage Second transmitter input voltage First transmitter input voltage Fifth Receiver Output Voltage Fourth receiver output voltage Third receiver output voltage 3/17 Pin configuration Table 1. Pin n 18 19 20 21 22 23 24 25 26 27 28 ST3241E Pin description Symbol R2OUT R1OUT R2OUTB R1OUTB SHDN EN C1GND VCC V+ C1+ Name and function Second receiver output voltage First receiver output voltage Non-inverting complementary receiver output, always active for wake-up Non-inverting complementary receiver output, always active for wake-up Shutdown control. Active low. Receiver enable. Active low Negative terminal of voltage- charge pump capacitor Ground Supply voltage 5.5V Generated by the charge pump Positive terminal of voltage- Charge pump capacitor Table 2. SHDN 0 0 1 1 Shutdown and enable control truth table EN 0 1 0 1 TOUT HIGH Z HIGH Z ACTIVE ACTIVE ROUT ACTIVE HIGH Z ACTIVE HIGH Z ROUTB ACTIVE ACTIVE ACTIVE ACTIVE 4/17 ST3241E Maximum ratings 2 Table 3. Symbol VCC V+ VV+ +|V-| Maximum ratings Absolute maximum ratings Parameter Supply Voltage Extra Positive Voltage (Note 1) Extra negative Voltage (Note 1) (Note 1) Input Voltage Receiver Input Voltage Range Transmitter Output Voltage Range Receiver Output Voltage Range Short Circuit Duration on TOUT (one at a time) Storage Temperature Range Value -0.3 to 6 (VCC -0.3) to 7 0.3 to -7 13 -0.3 to 6 25 13.2 -0.3 to (VCC + 0.3) Continuous -65 to 150 C Unit V V V V V V V V SHDN, EN, TIN RIN TOUT ROUT ROUTB INVALID tSHORT Tstg Note: Note: 1 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 cannot exceed 13 V. ESD Performance: transmitter outputs, receiver inputs Parameter ESD Protection voltage ESD Protection voltage Test Conditions Human body model IEC 1000-4-2 (contact discharge) Min. 15 8 Typ. Max. Unit KV KV Table 4. Symbol ESD ESD 5/17 Electrical characteristics ST3241E 3 Table 5. Electrical characteristics Electrical characteristics (C1 - C4 = 0.1F, VCC = 3V to 5.5V, TA = -40 to 85C, unless otherwise specified. Typical values are referred to TA = 25C) Parameter Supply current Shutdown supply current Test Conditions No load VCC = 3.3V or 5V, TA = 25C SHDN = GND, TA = 25C Min. Typ. 0.3 1 Max. 1 10 Unit mA A Symbol ISUPPLY ISHDN Table 6. Symbol VTIL VTIH IIL Logic input and receiver output electrical characteristics (C1 - C4 = 0.1F, VCC = 3V to 5.5V, TA = -40 to 85C, unless otherwise specified. Parameter Input logic threshold low Input logic threshold high Input leakage current Test Conditions TIN, EN, SHDN VCC = 3.3V VCC = 5V TIN, EN, SHDN 2 2.4 0.01 1.0 Min. Typ. Max. 0.8 Unit V V V A Table 7. Symbol IOL VOL VOH Receiver output electrical characteristics (C1 - C4 = 0.1F, VCC = 3V to 5.5V, TA = -40 to 85C, unless otherwise specified. Parameter Output Leakage Current Output Voltage Low Output Voltage High Test Conditions ROUT, EN, Receiver Disabled IOUT = 1.6mA IOUT = -1mA VCC-0.6 Min. Typ. 0.05 Max. 10 0.4 VCC-0.1 Unit A V V Table 8. Symbol VTOUT ROUT ISC IL Transmitter electrical characteristics (C1 - C4 = 0.1F, VCC = 3V to 5.5V, TA = -40 to 85C, unless otherwise specified. Parameter Output voltage swing Output resistance Output short circuit current Output leakage current VCC = 0 to 5.5V, transmitter output = 12V, transmitter disabled T1IN = T2IN = GND, T3IN = VCC T3OUT loaded with 3K to GND T1OUT and T2OUT loaded with 2.5mA each 5 Test Conditions All transmitter outputs are loaded with 3K to GND VCC = V+ = V- = 0V, VOUT = 2V Min. 5 300 Typ. 5.4 10M 35 60 25 Max. Unit V mA A VTO Transmitter output voltage V 6/17 ST3241E Electrical characteristics Table 9. Symbol VRIN VRIL VRIH VRIHYS RRIN Receiver electrical characteristics (C1 - C4 = 0.1F, VCC = 3V to 5.5V, TA = -40 to 85C, unless otherwise specified. Parameter Receiver input voltage operating range RS-232 Input threshold low RS-232 Input threshold high Input hysteresis Input resistance TA = 25C 3 TA = 25C, VCC = 3.3V TA = 25C, VCC = 5.0V TA = 25C, VCC = 3.3V TA = 25C, VCC = 5.0V Test Conditions Min. -25 0.6 0.8 1.2 1.5 1.5 1.8 0.3 5 7 2.4 2.4 Typ. Max. 25 Unit V V V V K Table 10. Symbol DR tPHL tPLH tT_SKEW Timing characteristics (C1 - C4 = 0.1F, VCC = 3V to 5.5V, TA = -40 to 85C, unless otherwise specified. Parameter Maximum data rate Test Conditions RL = 3K, CL= 1000pF one transmitter switching Min. 250 0.15 100 300 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 Typ. Max. Unit Kbps s ns ns Receiver propagation delay RIN to ROUT, CL = 150pF Transmitter skew tR_SKEW Receiver skew SRT Transition slew rate 6 4 30 30 V/s V/s 7/17 Application circuits ST3241E 4 Figure 2. Application circuits Application circuits Table 11. VCC Required minimum capacitance value (F) C1 0.1 0.047 0.1 C2 0.1 0.33 0.47 C3 0.1 0.33 0.47 C4 0.1 0.33 0.47 Cbypass 0.1 0.1 0.1 3.0 to 3.6 4.5 to 5.5 3.0 to 5.5 8/17 ST3241E Package mechanical data 5 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 9/17 Package mechanical data ST3241E SO-28 MECHANICAL DATA mm. DIM. MIN. A a1 b b1 C c1 D E e e3 F L S 7.40 0.50 17.70 10.00 1.27 16.51 7.60 1.27 0.291 0.020 18.10 10.65 0.1 0.35 0.23 0.5 45 (typ.) 0.697 0.393 0.050 0.650 0.300 0.050 inch MAX. 2.65 0.3 0.49 0.32 0.004 0.014 0.009 0.020 MIN. TYP. MAX. 0.104 0.012 0.019 0.012 TYP 0.713 0.419 8 (max.) 0016023 10/17 ST3241E Package mechanical data SSOP28 MECHANICAL DATA mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0 0.55 0.75 0.050 1.65 0.22 0.09 9.9 7.4 5 10.2 7.8 5.3 0.65 BSC 10 0.95 0 0.022 0.030 1.75 1.85 0.38 0.25 10.5 8.2 5.6 TYP MAX. 2 0.002 0.065 0.009 0.004 0.390 0.291 0.197 0.402 0.307 0.209 0.0256 BSC 10 0.037 0.069 0.073 0.015 0.010 0.413 0.323 0.220 MIN. TYP. MAX. 0.079 inch 11/17 Package mechanical data ST3241E TSSOP28 MECHANICAL DATA mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0 0.45 0.05 0.8 0.19 0.09 9.6 6.2 4.3 9.7 6.4 4.4 0.65 BSC inch MAX. 1.2 0.15 0.002 0.031 0.007 0.004 0.378 0.244 0.169 0.382 0.252 0.173 0.0256 BSC 8 0.75 0 0.018 TYP MIN. TYP. MAX. 0.047 0.004 0.039 0.006 0.041 0.012 0.0079 0.386 0.260 0.176 1 1.05 0.30 0.20 9.8 6.6 4.48 8 0.030 0.60 0.024 0128292B 12/17 ST3241E Package mechanical data Tape & Reel SO-28 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 10.8 18.2 2.9 3.9 11.9 12.8 20.2 60 30.4 11.0 18.4 3.1 4.1 12.1 0.425 0.716 0.114 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 1.197 0.433 0.724 0.122 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch 13/17 Package mechanical data ST3241E Tape & Reel SSOP28 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 8.4 10.7 2.9 3.9 11.9 12.8 20.2 60 22.4 8.6 10.9 3.1 4.1 12.1 0.331 0.421 0.114 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.339 0.429 0.122 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch 14/17 ST3241E Package mechanical data Tape & Reel TSSOP28 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.8 10.1 1.7 3.9 11.9 12.8 20.2 60 22.4 7 10.3 1.9 4.1 12.1 0.268 0.398 0.067 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.276 0.406 0.075 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch 15/17 Revision history ST3241E 6 Table 12. Date Revision history Revision history Revision 2 3 Changes The IL (Output Leakage Current) mA ==> A in table 8. Order codes has been updated and new template. 21-Jun-2004 03-Apr-2006 16/17 ST3241E 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. 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