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ST3241E
15KV ESD PROTECTED 3 TO 5.5V, 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
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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 AUTO-POWERDOWN 250Kbps MINIMUM GUARANTEED DATA RATE GUARANTEED 6V/s SLEW RATE RANGE GUARANTEED MOUSE DRIVEABILITY 0.1F EXTERNAL CAPACITORS MEET EIA/TIA-232 SPECIFICATIONS DOWN TO 3V AVAILABLE IN SO-28, SSOP28 AND TSSOP28 PACKAGES
SSOP
SOP
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
TSSOP
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.
March 2004
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ST3241E
ORDERING CODES
Type ST3241ECD ST3241EBD 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 0 to 70C -40 to 85C Package 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) Comments 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
PlN N 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 SYMBOL C2 + C2VR1IN R2IN R3IN R4IN R5IN T1OUT T2OUT T3OUT T3IN T2IN T1IN R5OUT R4OUT R3OUT R2OUT R1OUT R2OUTB R1OUTB SHDN EN C1GND VCC V+ C1 + 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 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
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ST3241E
PIN CONFIGURATION
SHUTDOWN AND ENABLE CONTROL TRUTH TABLE
SHDN 0 0 1 1 EN 0 1 0 1 TOUT HIGH Z HIGH Z ACTIVE ACTIVE ROUT ACTIVE HIGH Z ACTIVE HIGH Z ROUTB ACTIVE ACTIVE ACTIVE ACTIVE
ABSOLUTE MAXIMUM RATINGS
Symbol VCC V+ VV+ +|V-| SHDN, EN, TIN RIN TOUT Supply Voltage Extra Positive Voltage (Note 1) Extra negative Voltage (Note 1) (Note 1) Input Voltage Receiver Input Voltage Range Transmitter Output Voltage Range Parameter 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
ROUT ROUTB Receiver Output Voltage Range INVALID Short Circuit Duration on TOUT (one at a time) tSHORT Tstg Storage Temperature Range
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
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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. 15 8 Typ. Max. Unit KV KV
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)
Symbol ISHDN Parameter 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 ISUPPLY Supply Current
LOGIC INPUT AND RECEIVER OUTPUT 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)
Symbol VTIL VTIH IIL Parameter Input Logic Threshold Low Input Logic Threshold High Input Leakage Current VCC = 3.3V VCC = 5V TIN, EN, SHDN Test Conditions TIN, EN, SHDN 2 2.4 0.01 1.0 Min. Typ. Max. 0.8 Unit V V V A
RECEIVER OUTPUT 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)
Symbol IOL VOL VOH Parameter Output Leakage Current Output Voltage Low Output Voltage High Test Conditions ROUT, EN, Receiver Disabled IOUT = 1.6mA IOUT = -1mA Min. Typ. 0.05 Max. 10 0.4 VCC-0.6 VCC-0.1 Unit A V V
TRANSMITTER 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)
Symbol VTOUT ROUT ISC IL VTO Parameter Output Voltage Swing Output Resistance Output Leakage Current Transmitter Output Voltage Test Conditions All Transmitter outputs are loaded with 3K to GND VCC = V+ = V- = 0V VOUT = 2V 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 Min. 5 300 Typ. 5.4 10M 35 60 25 5 Max. Unit V mA A V
Output Short Circuit Current VCC = 3.3V
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ST3241E
RECEIVER 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)
Symbol VRIN VRIL VRIH Parameter Receiver Input Voltage Operating Range RS-232 Input Threshold Low RS-232 Input Threshold High Test Conditions Min. -25 TA = 25C TA = 25C TA = 25C TA = 25C TA = 25C VCC = 3.3V VCC = 5.0V VCC = 3.3V VCC = 5.0V 3 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
VRIHYS Input Hysteresis RRIN Input Resistance
TIMING CHARACTERISTICS (C1 - C4 = 0.1F, VCC = 3V to 5.5V, TA = -40 to 85C, unless otherwise specified. Typical values are referred to TA = 25C)
Symbol DR tPHL tPLH Parameter Maximum Data Rate Test Conditions 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
RL = 3K CL= 1000pF one transmitter switching Receiver Propagation Delay RIN to ROUT CL = 150pF
tT_SKEW Transmitter Skew tR_SKEW Receiver Skew SRT Transition Slew Rate
6 4
30 30
V/s V/s
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ST3241E
APPLICATION CIRCUITS
Figure 1 : REQUIRED MINIMUM CAPACITANCE VALUE (F)
VCC (V) 3 to 3.6 4.5 to 5.5 3 to 5.5 6/13 C1 0.1 0.047 0.1 C2, C3, C4, 0.1 0.33 0.47 CBYPASS 0.1 0.1 0.1
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 0.713 0.419 TYP 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 inch
8 (max.)
0016023
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ST3241E
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
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ST3241E
TSSOP28 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 9.6 6.2 4.3 9.7 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 9.8 6.6 4.48 0.002 0.031 0.007 0.004 0.378 0.244 0.169 0.382 0.252 0.173 0.0256 BSC 8 0.030 0.004 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.0079 0.386 0.260 0.176 inch
0128292B
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ST3241E
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
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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
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ST3241E
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
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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 All other names are the property of their respective owners (c) 2004 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com
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