ST3241E ±15KV ESD PROTECTED 3 TO 5.5V, 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN ■ ■ ■ ■ ■ ■ ■ ■ ESD PROTECTION FOR RS-232 I/O PINS: ±8KV IEC 1000-4-2 CONTACT DISCHARGE ±15KV HUMAN BODY MODEL 1µA SUPPLY CURRENT ACHIEVED WHEN IN AUTO-POWERDOWN 250Kbps MINIMUM GUARANTEED DATA RATE GUARANTEED 6V/µs SLEW RATE RANGE GUARANTEED MOUSE DRIVEABILITY 0.1µF EXTERNAL CAPACITORS MEET EIA/TIA-232 SPECIFICATIONS DOWN TO 3V AVAILABLE IN SO-28, SSOP28 AND TSSOP28 PACKAGES 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 comunication 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. October 2002 SOP SSOP TSSOP 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 outputa are always active. Typical application are in notebook, subnotebook, palmtop computers, battery-powered equipment, hand-held equipment, peripherals and printers. 1/10 ST3241E ORDERING CODES Type Temperature Range Package Comments ST3241ECD ST3241EBD ST3241ECDR ST3241EBDR ST3241ECPR ST3241EBPR ST3241ECTR ST3241EBTR 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 SO-28 (Tube) SO-28 (Tube) SO-28 (Tape & Reel) SO-28 (Tape & Reel) SSOP-28 (Tape & Reel) SSOP-28 (Tape & Reel) TSSOP28 (Tape & Reel) TSSOP28 (Tape & Reel) 27parts per tube / 12tube per box 27parts per tube / 12tube per box 1000 parts per reel 1000 parts per reel 1350 parts per reel 1350 parts per reel 2500 parts per reel 2500 parts per reel PIN DESCRIPTION 2/10 PlN N° SYMBOL NAME AND FUNCTION 1 C2+ Positive Terminal of Inverting Charge Pump Capacitor 2 C2- Negative Terminal of Inverting Charge Pump Capacitor 3 4 VR1IN -5.5V Generated by the Charge Pump First Receiver Input Voltage 5 R2IN Second Receiver Input Voltage 6 R3IN Third Receiver Input Voltage 7 R4IN Fourth Receiver Input Voltage 8 R5IN Fifth Receiver Input Voltage 9 T1OUT First Transmitter Output Voltage 10 T2OUT Second Transmitter Output Voltage Third Transmitter Output Voltage 11 T3OUT 12 T3IN Third Transmitter Input Voltage 13 T2IN Second Transmitter Input Voltage 14 T1IN First Transmitter Input Voltage 15 R5OUT Fifth Receiver Output Voltage 16 R4OUT Fourth Receiver Output Voltage 17 R3OUT Third Receiver Output Voltage 18 R2OUT Second Receiver Output Voltage 19 R1OUT First Receiver Output Voltage 20 R2OUTB 21 R1OUTB 22 23 24 SHDN EN C1- 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 25 26 GND VCC Ground Supply Voltage 27 28 V+ C1 + 5.5V Generated by the Charge Pump Positive Terminal of Voltage- Charge Pump Capacitor ST3241E PIN CONFIGURATION SHUTDOWN AND ENABLE CONTROL TRUTH TABLE SHDN EN TOUT ROUT ROUTB 0 0 1 1 0 1 0 1 HIGH Z HIGH Z ACTIVE ACTIVE ACTIVE HIGH Z ACTIVE HIGH Z ACTIVE ACTIVE ACTIVE ACTIVE ABSOLUTE MAXIMUM RATINGS Symbol Parameter VCC Supply Voltage V+ VV+ +|V-| SHDN, EN, TIN RIN TOUT Unit V Extra Positive Voltage (Note 1) (VCC -0.3) to 7 V Extra negative Voltage (Note 1) (Note 1) Input Voltage 0.3 to -7 13 -0.3 to 6 V V Receiver Input Voltage Range Transmitter Output Voltage Range ROUT ROUTB Receiver Output Voltage Range INVALID Short Circuit Duration on TOUT (one at a time) tSHORT Tstg Value -0.3 to 6 Storage Temperature Range V ± 25 V ± 13.2 V -0.3 to (VCC + 0.3) V Continuous -65 to 150 °C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Note 1: V+ and V- can have magnitude of 7V, but their absolute difference cannot exceed 13V 3/10 ST3241E ESD PERFORMANCE: TRANSMITTER OUTPUTS, RECEIVER INPUTS Symbol ESD ESD Parameter ESD Protection Voltage ESD Protection Voltage Test Conditions Human Body Model IEC 1000-4-2 (Contact Discharge) Min. Typ. Max. ± 15 ±8 Unit KV KV 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 Supply Current ISHDN Shutdown Supply Current Test Conditions Min. Typ. No load VCC = 3.3V or 5V, TA = 25°C SHDN = GND, TA = 25°C Max. Unit 0.3 1 mA 1 10 µA Typ. Max. Unit LOGIC INPUT AND RECEIVER OUTPUT 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 Test Conditions VTIL Input Logic Threshold Low TIN, EN, SHDN VTIH Input Logic Threshold High VCC = 3.3V VCC = 5V Input Leakage Current TIN, EN, SHDN IIL Min. 0.8 2 2.4 V V V ± 0.01 ± 1.0 µA Typ. Max. Unit ± 0.05 ± 10 µA 0.4 V RECEIVER OUTPUT 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 Test Conditions IOL Output Leakage Current ROUT, EN, Receiver Disabled VOL Output Voltage Low IOUT = 1.6mA VOH Output Voltage High IOUT = -1mA Min. VCC-0.6 VCC-0.1 V TRANSMITTER 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 VTOUT Output Voltage Swing ROUT Output Resistance ISC IL VTO Test Conditions All Transmitter outputs are loaded with 3KΩ to GND VCC = V+ = V- = 0V VOUT = ± 2V Typ. ±5 ± 5.4 300 10M ± 35 Output Short Circuit Current VCC = 3.3V Output Leackage Current Transmitter Output Voltage VCC = 0 to 5.5V, trasmitter output = ± 12V, trasmitter disabled T1IN = T2IN = GND, T3IN = VCC T3OUT loaded with 3KΩ to GND T1OUT and T2OUT loaded with 2.5mA each 4/10 Min. ±5 Max. Unit V Ω ± 60 mA ± 25 mA V ST3241E RECEIVER 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 VRIN VRIL VRIH Parameter Test Conditions Receiver Input Voltage Operating Range RS-232 Input Threshold Low TA = 25°C TA = 25°C VCC = 3.3V VCC = 5.0V RS-232 Input Threshold High TA = 25°C TA = 25°C VCC = 3.3V VCC = 5.0V Min. -25 0.6 0.8 Input Resistance Max. Unit 25 V 1.2 1.5 1.5 1.8 VRIHYS Input Hysteresis RRIN Typ. V 2.4 2.4 0.3 TA = 25°C 3 V V 5 7 Typ. Max. KΩ TIMING 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 DR tPHL tPLH Parameter Test Conditions Maximum Data Rate RL = 3KΩ CL= 1000pF one trasmitter switching Receiver Propagation Delay RIN to ROUT CL = 150pF Min. 250 Unit Kbps µs 0.15 tT_SKEW Transmitter Skew 100 ns tR_SKEW Receiver Skew 300 ns SRT Transition Slew Rate TA = 25°C RL = 3K to 7KΩ VCC = 3.3V measured from +3V to -3V or -3V to +3V CL = 150pF to 1000pF CL = 150pF to 2500pF 6 4 30 30 V/µs V/µs 5/10 ST3241E APPLICATION CIRCUITS Figure 1 : REQUIRED MINIMUM CAPACITANCE VALUE (µF) 6/10 VCC (V) C1 C2, C3, C4, CBYPASS 3 to 3.6 4.5 to 5.5 3 to 5.5 0.1 0.047 0.1 0.1 0.33 0.47 0.1 0.1 0.1 ST3241E SO-28 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. 2.65 MAX. 0.104 a1 0.1 0.3 0.004 0.012 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 17.70 18.10 0.697 0.713 E 10.00 10.65 0.393 0.419 e 1.27 0.050 e3 16.51 0.650 F 7.40 7.60 0.291 0.300 L 0.50 1.27 0.020 0.050 S 8 ˚ (max.) 0016023 7/10 ST3241E SSOP28 MECHANICAL DATA mm. inch DIM. MIN. TYP A MIN. TYP. 2 A1 0.050 A2 1.65 b MAX. 0.079 0.002 1.85 0.065 0.22 0.38 0.009 0.015 c 0.09 0.25 0.004 0.010 D 9.9 10.2 10.5 0.390 0.402 0.413 E 7.4 7.8 8.2 0.291 0.307 0.323 E1 5 5.3 5.6 0.197 0.209 0.220 e 8/10 MAX. 1.75 0.65 BSC K 0˚ L 0.55 0.75 0.069 0.073 0.0256 BSC 10˚ 0˚ 0.95 0.022 10˚ 0.030 0.037 ST3241E TSSOP28 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 9.6 9.7 9.8 0.378 0.382 0.386 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 e 1 0.65 BSC K 0˚ L 0.45 0.60 0.0256 BSC 8˚ 0˚ 0.75 0.018 8˚ 0.024 0.030 0128292B 9/10 ST3241E 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. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. © The ST logo is a registered trademark of STMicroelectronics © 2002 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. © http://www.st.com 10/10