ST3243E ±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, SSOP-28, TSSOP28 AND FLIP-CHIP28 PACKAGES DESCRIPTION The ST3243E 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 ST3243E 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. The Auto-powerdown feature functions when FORCEON is low and FORCEOFF is high. During this mode of operation, if the device does not sense a valid RS-232 signal, the driver outputs are January 2003 SOP Flip-Chip28 SSOP TSSOP disabled. If FORCEOFF is set low, both drivers and receivers (expert R2B) are shut off, and supply current is reduced to 1µA. Disconnecting the serial port or turning off the peripheral drives causes the auto-powerdown condition to occur. Auto-powerdown can be disabled when FORCEON and FORCEOFF are high, and should be done when driving a serial mouse. With Auto-powerdown enabled, the device is activated automatically when a valid signal is applied to any receiver input. Typical application are in notebook, subnotebook, palmtop computers, battery-powered equipment, hand-held equipment, peripherals and printers. 1/14 ST3243E ORDERING CODES Type Temperature Range Package Comments ST3243ECD ST3243EBD ST3243ECDR ST3243EBDR ST3243ECPR ST3243EBPR ST3243ECTR ST3243EBTR ST3243ECJ ST3243EBJ 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 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) FLIP-CHIP28 FLIP-CHIP28 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 coming soon coming soon PIN DESCRIPTION 2/14 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 11 T3OUT Third Transmitter Output Voltage 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 INVALID 22 FORCEOFF 23 FORCEON Non-inverting Complementary Receiver Output, always active for wake-up Output of the valid signal detector. Indicates if a valid RS-232 level is present on receiver inputs logic "1" Drive low to shut down transmitters and on-board power supply. This over-rides all automatic circuitry and FORCEON Drive high to override automatic circuitry keeping transmitters on (FORCEOFF must be high) Negative Terminal of Voltage- Charge Pump Capacitor 24 C1- 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 ST3243E PIN DESCRIPTION PlN N° SYMBOL NAME AND FUNCTION A1 R2IN Second Receiver Input Voltage A2 R3IN Third Receiver Input Voltage A3 R4IN Fourth Receiver Input Voltage A4 R5IN Fifth Receiver Input Voltage A5 T1OUT First Transmitter Output Voltage A6 T2OUT Second Transmitter Output Voltage B1 B2 VR1IN B3 T3OUT B4 T3IN Third Transmitter Input Voltage B5 T1IN First Transmitter Input Voltage B6 T2IN Second Transmitter Input Voltage C1 C2 + Positive Terminal of Inverting Charge Pump Capacitor C2 C2- Negative Terminal of Inverting Charge Pump Capacitor -5.5V Generated by the Charge Pump First Receiver Input Voltage Third Transmitter Output Voltage C5 R4OUT Fourth Receiver Output Voltage C6 R5OUT Fifth Receiver Output Voltage D1 C1 + Positive Terminal of Voltage- Charge Pump Capacitor D2 D3 V+ VCC 5.5V Generated by the Charge Pump Supply Voltage D4 FORCEON D5 R1OUT Drive high to override automatic circuitry keeping transmitters on (FORCEOFF must be high) First Receiver Output Voltage D6 R3OUT Third Receiver Output Voltage E1 E2 GND C1- E3 FORCEOFF E4 INVALID E5 E6 R2OUTB R2OUT Ground Negative Terminal of Voltage- Charge Pump Capacitor Drive low to shut down transmitters and on-board power supply. This over-rides all automatic circuitry and FORCEON Output of the valid signal detector. Indicates if a valid RS-232 level is present on receiver inputs logic "1" Non-inverting Complementary Receiver Output, always active for wake-up Second Receiver Output Voltage 3/14 ST3243E PIN CONFIGURATION FLIP-CHIP 6x5 (bottom view, bumps side) SOP, SSOP, TSSOP (top view) INVALID TRUTH TABLE RS-232 SIGNAL PRESENT AT ANY RECEIVER INPUT INVALID OUTPUT YES NO H L OUTPUT CONTROL TRUTH TABLE FORCE ON FORCE OFF VALID RECEIVER LEVEL X 0 X 1 1 X 0 1 YES 0 1 NO 4/14 OPERATION STATUS TOUT ROUT R2OUTB Shutdown (Force OFF) Normal Operating (Force ON) Normal Operating (Auto-powerdown) Shutdown (Auto-powerdown) HIGH Z HIGH Z ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE HIGH Z ACTIVE ACTIVE ST3243E ABSOLUTE MAXIMUM RATINGS Symbol Parameter VCC Supply Voltage V+ Doubled Voltage Terminal Value Unit -0.3 to 6 V (VCC -0.3) to 7 V 0.3 to -7 13 -0.3 to 6 V V VInverted Voltage Terminal V+ +|V-| FORCEON, Input Voltage FORCEOFF, TIN RIN TOUT V V V -0.3 to (VCC + 0.3) V Transmitter Output Voltage Range ROUT ROUTB Receiver Output Voltage Range INVALID Short Circuit Duration on TOUT (one at a time) tSHORT Tstg ± 25 ± 13.2 Receiver Input Voltage Range Continuous Storage Temperature Range -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. 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 IASHDN Parameter Supply Current Auto-powerdown ISUPPLY Supply Current ISHDN Shutdown Supply Current Test Conditions Min. FORCEOFF = GNDFORCEON = VCC All R_IN open or grounded FORCEON = FORCEOFF = VCC FORCEOFF = GND Typ. Max. Unit 1 10 µA 0.3 1 mA 1 10 µA Typ. Max. Unit 0.8 V LOGIC INPUT 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 T-IN, FORCEON, FORCEOFF VTIH Input Logic Threshold High T-IN, FORCEON, FORCEOFF VCC = 3.3V VCC = 5V Min. 2 2.4 V V IIL Transmitter Input Hysteresis Input Leakage Current T-IN, FORCEON, FORCEOFF ± 0.01 ± 1.0 µA ± 0.05 ± 10 µA 0.4 V VTHYS 0.5 IOL Output Leakage Current Receiver Disabled VOL Output Voltage Low IOUT = 1.6mA VOH Output Voltage High IOUT = -1mA VCC-0.6 VCC-0.1 V V 5/14 ST3243E AUTO-POWERDOWN ELECTRICAL CHARACTERISTICS (C 1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C, FORCEON = GND, FORCEOFF = VCC) Symbol Parameter VRITE Receiver Input Threshold to INVALID Output Voltage HIGH (Fig. 1) Receiver Input Threshold to INVALID Output Voltage LOW (Fig. 1) INVALID Output Voltage LOW INVALID Output Voltage HIGH Receiver or Transmitter Edge Transmitter Enabled (Fig. 1) Receiver Positive or Negative Threshold to INVALID HIGH (Fig. 1) Receiver Positive or Negative Threshold to INVALID LOW (Fig. 1) VRITD VIOL VIOH tWU tinvh tinvL Test Conditions Positive Threshold Negative Threshold Min. Typ. Unit 2.7 V V 0.3 V 0.4 V 2.7 -0.3 IOUT = 1.6mA IOUT = -1mA Max. VCC-0.6 V 100 µs 0.2 µs 30 µs TRANSMITTER ELECTRICAL CHARACTERISTICS (C 1 - 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 VOT Test Conditions All Transmitter outputs are loaded with 3KΩ to GND VCC = V+ = V- = 0V VOUT = ± 2V Min. Typ. ±5 ± 5.4 V 300 10M Ω ± 40 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 Max. Unit ± 60 mA ± 25 mA ±5 V T1OUT and T2OUT loaded with 2.5mA each RECEIVER ELECTRICAL CHARACTERISTICS (C 1 - 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. 0.6 0.8 6/14 Input Resistance Max. Unit 25 V 1.1 1.4 1.6 1.9 VRIHYS Input Hysteresis RRIN Typ. -25 V 2.4 2.4 V 7 KΩ 0.5 TA = 25°C 3 5 V ST3243E 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. Typ. 250 400 Max. Kbps Unit 0.15 µs tT_SKEW Transmitter Skew 150 ns tR_SKEW Receiver Skew 70 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 7/14 ST3243E APPLICATION CIRCUITS REQUIRED MINIMUM CAPACITANCE VALUE (µF) 8/14 VCC (V) C1 C2, C3, C4, CBYPASS 3 to 3.6 4.5 to 5.5 0.1 0.047 0.1 0.33 ST3243E AUTOPOWERDOWN INPUT LEVELS AUTOPOWERDOWN INPUT TIMING 9/14 ST3243E 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 10/14 ST3243E SSOP28 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. 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 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 11/14 ST3243E 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 0.0079 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 12/14 ST3243E Flip-Chip28 MECHANICAL DATA mm. mils DIM. MIN. A TYP 0.58 MAX. MIN. 0.95 22.8 TYP. 37.4 A1 0.24 9.4 A2 0.65 25.6 b 0.25 D 3.97 D1 E 0.30 0.35 9.8 4.17 156.3 2.5 2.47 E1 MAX. 11.8 13.8 164.2 98.4 2.67 97.2 2 105.1 78.7 e 0.45 0.55 17.7 21.7 f 0.23 0.34 9.1 13.4 f1 0.80 0.91 31.5 31.8 7385199/A 13/14 ST3243E 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 14/14