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ST3243E
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, SSOP-28, TSSOP28 AND FLIP-CHIP28 PACKAGES
SOP
Flip-Chip28
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 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 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
SSOP
TSSOP
disabled. If FORCEOFF is set low, both drivers and receivers (expert R2B) are shut off, and supply current is reduced to 1A. 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.
March 2004
1/18
ST3243E
ORDERING CODES
Type ST3243ECD ST3243EBD ST3243ECDR ST3243EBDR ST3243ECPR ST3243EBPR ST3243ECTR ST3243EBTR ST3243ECJ ST3243EBJ 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 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) FLIP-CHIP28 FLIP-CHIP28 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 coming soon coming soon
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 2/18 SYMBOL C2 + C2VR1IN R2IN R3IN R4IN R5IN T1OUT T2OUT T3OUT T3IN T2IN T1IN R5OUT R4OUT R3OUT R2OUT R1OUT R2OUTB INVALID FORCEOFF FORCEON 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 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 Ground Supply Voltage 5.5V Generated by the Charge Pump Positive Terminal of Voltage- Charge Pump Capacitor
ST3243E
PIN DESCRIPTION
PlN N A1 A2 A3 A4 A5 A6 B1 B2 B3 B4 B5 B6 C1 C2 C5 C6 D1 D2 D3 D4 D5 D6 E1 E2 E3 E4 E5 E6 SYMBOL R2IN R3IN R4IN R5IN T1OUT T2OUT VR1IN T3OUT T3IN T1IN T2IN C2 + C2R4OUT R5OUT C1 + V+ VCC FORCEON R1OUT R3OUT GND C1FORCEOFF INVALID R2OUTB R2OUT NAME AND FUNCTION Second Receiver Input Voltage Third Receiver Input Voltage Fourth Receiver Input Voltage Fifth Receiver Input Voltage First Transmitter Output Voltage Second Transmitter Output Voltage -5.5V Generated by the Charge Pump First Receiver Input Voltage Third Transmitter Output Voltage Third Transmitter Input Voltage First Transmitter Input Voltage Second Transmitter Input Voltage Positive Terminal of Inverting Charge Pump Capacitor Negative Terminal of Inverting Charge Pump Capacitor Fourth Receiver Output Voltage Fifth Receiver Output Voltage Positive Terminal of Voltage- Charge Pump Capacitor 5.5V Generated by the Charge Pump Supply Voltage Drive high to override automatic circuitry keeping transmitters on (FORCEOFF must be high) First Receiver Output Voltage Third Receiver Output Voltage 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
3/18
ST3243E
PIN CONFIGURATION
SOP, SSOP, TSSOP (top view)
FLIP-CHIP 6x5 (bottom view, bumps side)
INVALID TRUTH TABLE
RS-232 SIGNAL PRESENT AT ANY RECEIVER INPUT YES NO INVALID OUTPUT H L
OUTPUT CONTROL TRUTH TABLE
FORCE ON X 1 0 0 FORCE OFF 0 1 1 1 VALID RECEIVER LEVEL X X YES NO OPERATION STATUS Shutdown (Force OFF) Normal Operating (Force ON) Normal Operating (Auto-powerdown) Shutdown (Auto-powerdown) TOUT HIGH Z ACTIVE ACTIVE HIGH Z ROUT HIGH Z ACTIVE ACTIVE ACTIVE R2OUTB ACTIVE ACTIVE ACTIVE ACTIVE
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ST3243E
ABSOLUTE MAXIMUM RATINGS
Symbol VCC V+ Supply Voltage Doubled Voltage Terminal Parameter Value -0.3 to 6 (VCC -0.3) to 7 0.3 to -7 13 -0.3 to 6 Unit V V V V V 25 13.2 -0.3 to (VCC + 0.3) Continuous -65 to 150 C V V V
VInverted Voltage Terminal V+ +|V-| FORCEON, Input Voltage FORCEOFF, TIN RIN TOUT Receiver Input Voltage Range Transmitter Output Voltage Range
ROUT ROUTB Receiver Output Voltage Range INVALID tSHORT Short Circuit Duration on TOUT (one at a time) 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.
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 IASHDN Parameter Supply Current Auto-powerdown Shutdown Supply Current Test Conditions FORCEOFF = GNDFORCEON = VCC All R_IN open or grounded FORCEON = FORCEOFF = VCC FORCEOFF = GND Min. Typ. 1 0.3 1 Max. 10 1 10 Unit A mA A
ISUPPLY Supply Current ISHDN
LOGIC INPUT 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 Parameter Input Logic Threshold Low Input Logic Threshold High Test Conditions T-IN, FORCEON, FORCEOFF T-IN, FORCEON, FORCEOFF VCC = 3.3V VCC = 5V 2 2.4 0.5 T-IN, FORCEON, FORCEOFF Receiver Disabled IOUT = 1.6mA IOUT = -1mA VCC-0.6 VCC-0.1 0.01 0.05 1.0 10 0.4 Min. Typ. Max. 0.8 Unit V V V V A A V V
VTHYS IIL IOL VOL VOH
Transmitter Input Hysteresis Input Leakage Current Output Leakage Current Output Voltage Low Output Voltage High
5/18
ST3243E
AUTO-POWERDOWN ELECTRICAL CHARACTERISTICS (C 1 - C4 = 0.1F, VCC = 3V to 5.5V, TA = -40 to 85C, unless otherwise specified. Typical values are referred to TA = 25C, FORCEON = GND, FORCEOFF = VCC)
Symbol VRITE Parameter 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) Test Conditions Positive Threshold Negative Threshold Min. 2.7 -0.3 0.3 Typ. Max. 2.7 Unit V V V
VRITD
VIOL VIOH tWU
IOUT = 1.6mA IOUT = -1mA VCC-0.6 100
0.4
V V s s s
tINVH
0.2
tINVL
30
TRANSMITTER ELECTRICAL CHARACTERISTICS (C 1 - 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 VOT 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 40 60 25 5 Max. Unit V mA A V
Output Short Circuit Current VCC = 3.3V
RECEIVER ELECTRICAL CHARACTERISTICS (C 1 - 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 1.1 1.4 1.6 1.9 0.5 5 7 2.4 2.4 Typ. Max. 25 Unit V V V V K
VRIHYS Input Hysteresis RRIN 6/18 Input Resistance
ST3243E
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 Typ. 400 0.15 150 70 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 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
7/18
ST3243E
APPLICATION CIRCUITS
REQUIRED MINIMUM CAPACITANCE VALUE (F)
VCC (V) 3 to 3.6 4.5 to 5.5 C1 0.1 0.047 C2, C3, C4, CBYPASS 0.1 0.33
8/18
ST3243E
AUTOPOWERDOWN INPUT LEVELS
AUTOPOWERDOWN INPUT TIMING
9/18
ST3243E
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
10/18
ST3243E
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
11/18
ST3243E
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
12/18
ST3243E
Flip-Chip28 MECHANICAL DATA
mm. DIM. MIN. A A1 A2 b D D1 E E1 e f f1 0.45 0.23 0.80 2.47 2 0.55 0.34 0.91 17.7 9.1 31.5 0.25 3.97 2.5 2.67 97.2 78.7 21.7 13.4 31.8 0.58 0.24 0.65 0.30 0.35 4.17 9.8 156.3 98.4 105.1 TYP MAX. 0.95 MIN. 22.8 9.4 25.6 11.8 13.8 164.2 TYP. MAX. 37.4 mils
7385199/A
13/18
ST3243E
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
14/18
ST3243E
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
15/18
ST3243E
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
16/18
ST3243E
Tape & Reel Flip-Chip28 MECHANICAL DATA
mm. DIM. MIN. A C D N T Ao Bo Ko Po P 2.6 4.1 1.1 3.9 3.9 12.8 20.2 60 18.4 2.8 4.3 1.3 4.1 4.1 0.102 0.161 0.043 0.153 0.153 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.110 0.169 0.051 0.161 0.161 MIN. TYP. MAX. 12.992 0.519 inch
17/18
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 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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