ST3384 3 TO 3.6V, LOW POWER, UP TO 250KBPS, RS-232 DRIVERS AND RECEIVERS ■ ■ ■ ■ ■ 300µA SUPPLY CURRENT 250Kbps MINIMUM GUARENTEED DATA RATE 6V/ms MINIMUM GUARANTEED SLEW RATE MEET EIA/TIA-232 SPECIFICATIONS DOWN TO 3V AVAILABLE IN SO-18 AND SSOP20 DESCRIPTION The ST3384 is a 3V powered EIA/TIA-232 and V.28/V.24 communications interface with low power requirements and high data-rate capabilities. ST3384 has a proprietary low dropout transmitter output stage providing true RS-232 performance from 3 to 3.6V power supplies. The device requires only four small 0.1mF standard external capacitors for operating from 3V supply. The ST3384 has two receivers and two drivers. The ST3384 features a 1mA shutdown mode that reduces power consumption and extends battery life in portable systems. Its receivers can remain active in shutdown mode, allowing external SO-18 SSOP20 devices such as modems to be monitored using only 1mA supply current. The device is guaranteed to run at data rates of 250Kbps while maintaining RS-232 output levels. Typical applications are Notebook, Sub-notebook and Palmtop Computers, Battery Powered Equipment, Hand-Held Equipment, Peripherals and Printers. ORDERING CODES Type Temperature Range Package Comments ST3384CD ST3384BD ST3384CDR ST3384BDR ST3384CPR ST3384BPR 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-18 (Tube) SO-18 (Tube) SO-18 (Tape & Reel) SO-18 (Tape & Reel) SSOP20 (Tape & Reel) SSOP20 (Tape & Reel) 50 parts per tube / 20 tube per box 50 parts per tube / 20 tube per box 1000 parts per reel 1000 parts per reel 1350 parts per reel 1350 parts per reel October 2003 1/11 ST3384 PIN CONFIGURATION SO-18 SSOP20 PIN DESCRIPTION 2/11 PlN N° (SO-18) PlN N° (SSOP20) SYMBOL 1 1, 10, 11 N.C. 2 2 C1+ 3 3 V+ 4 4 C1- 5 5 C2+ 6 6 C2- 7 7 8 8 VT2OUT 9 9 R2IN 10 12 R2OUT Second Receiver Output Voltage 11 13 T2IN Second Transmitter Input Voltage 12 14 T1IN First Transmitter Input Voltage 13 15 R1OUT First Receiver Output Voltage 14 16 R1IN 15 17 T1OUT 16 18 GND 17 19 VCC 18 20 SHDN NAME AND FUNCTION Not Connected Positive Terminal for the first Charge Pump Capacitor 5.5V Generated By The Charge Pump Negative Terminal for the first Charge Pump Capacitor Positive Terminal for the second Charge Pump Capacitor Negative Terminal for the second Charge Pump Capacitor -5.5V Generated By The Charge Pump Second Transmitter Output Voltage Second Receiver Input Voltage First Receiver Input Voltage First Transmitter Output Voltage Ground 3V to 5.5V Supply Voltage. Connect a 0.1µF capacitor to GND Active Low Shutdown Control Input. Drive Low To Shut-down Transmitters, receiver and Charge Pump ST3384 ABSOLUTE MAXIMUM RATINGS Symbol VCC Parameter Supply Voltage (VCC to GND) Value Unit -0.3 to 6 V V+ Doubled Voltage Terminal (V+ to GND) (Note 1) (VCC - 0.3) to 7 V VV+ +|V-| TIN Inverted Voltage Terminal (V- to GND) (Note 1) (Note 1) Transmitter Input Voltage 0.3 to -7 13 V V -0.3 to 6 V SHDN RIN Shutdown Input Voltage (SHDN to GND) Receiver Input Voltage (RIN to GND) -0.3 to 6 V ± 25 V TOUT Transmitter Output Voltage (TOUT to GND) ROUT Receiver Output Voltage tSHORT ± 13.2 V -0.3 to (VCC + 0.3) V Transmitter Output Short to GND Time Continuous 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. Note 1: V+ and V- can have maximum magnitude of 7V, but their absolute difference cannot exceed 13V. SHUTDOWN TRUTH TABLE SHDN T-OUT R-OUT L H High Z Active High Z Active ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1µF, VCC = 3V to 5.5V, tested at 3.3V ±10% C1 = 0.047µF, C2 - C4 = 0.33µF tested at 5V ±10% -40°C < TA < 85°C unless otherwise noted. Typical values are referred to TA = 25°C) Symbol Parameter ICC VCC Power Supply Current SHDN = NO LOAD ISHDN SHUTDOWN Supply Current R-IN, T-OUT Electrostatic Discharge Immunity SHDN = GND ESD Test Conditions Min. Human Body Model Typ. Max. Unit 0.3 1 mA 1 10 µA ±15 kV LOGIC INPUT ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1µF, VCC = 3V to 5.5V, tested at 3.3V ±10% C1 = 0.047µF, C2 - C4 = 0.33µF tested at 5V ±10% -40°C < TA < 85°C unless otherwise noted. Typical values are referred to TA = 25°C) Symbol Parameter VIL Input Logic Threshold Low VIH Input Logic Threshold High VHYS IIL Transmitter Input Hysteresis Input Leakage Current Test Conditions Min. Typ. T-IN, SHDN T-IN, SHDN VCC = 3.3V 2 T-IN, SHDN VCC = 5.0V 2.4 Max. Unit 0.8 V V 0.5 T-IN, SHDN ± 0.01 V ±1 µA 3/11 ST3384 TRANSMITTER ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1µF, VCC = 3V to 5.5V, tested at 3.3V ±10% C1 = 0.047µF, C2 - C4 = 0.33µF tested at 5V ±10% -40°C < TA < 85°C unless otherwise noted. Typical values are referred to TA = 25°C) Symbol Parameter VTOUT Output Voltage Swing RTOUT Transmitter Output Resistance ITSC Output Short Circuit Current ITOL Output Leakage Current Test Conditions All Transmitter outputs loaded with 3 KΩ to GND VCC = V+ = V- = 0V Transmitter output = ± 2V Min. Typ. Max. ±5 ± 5.4 V 300 10M Ω ± 50 VCC = 0V or 3V to 5.5V Transmitters Disabled VOUT = ± 12V Unit mA ± 25 µA RECEIVER DC TARGET ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1µF, VCC = 3V to 5.5V, tested at 3.3V ±10% C1 = 0.047µF, C2 - C4 = 0.33µF tested at 5V ±10% -40°C < TA < 85°C unless otherwise noted. Typical values are referred to TA = 25°C) Symbol Parameter IOL Output Leakage Current VRIN Input Voltage Operating Range Input Threshold Low VRIL Test Conditions R-OUT, Receiver Disabled Typ. Max. Unit ± 0.05 ± 10 µA ± 25 V -25 TA = 25°C VCC = 3.3V 0.6 1.2 TA = 25°C VCC = 5.5V 0.8 1.5 TA = 25°C VCC = 3.3V 1.5 2.4 TA = 25°C VCC = 5.5V 1.8 2.4 VRITH Input Threshold High VRIH Input Hysteresis RRIN Input Resistance TA = 25°C VROL TTL/CMOS Output Voltage Low TTL/CMOS Output Voltage High IOUT = 2 mA VROH Min. V 0.5 3 IOUT = -1 mA 5 V V 7 KΩ 0.4 V VCC-0.6 VCC-0.1 V TIMING TARGET ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1µF, VCC = 3V to 5.5V, tested at 3.3V ±10% C1 = 0.047µF, C2 - C4 = 0.33µF tested at 5V ±10% -40°C < TA < 85°C unless otherwise noted. Typical values are referred to TA = 25°C) Symbol DR tPHLR tPLHR Parameter Test Conditions Maximum Data Rate RL = 3 KΩ CL2= 1000pF one transmitter switching Receiver Propagation Delay RXIN to RXOUT CL = 150pF |tPHLT Transmitter Propagation - tPLHT| Delay Difference (Note 1) Min. |tPHLR Receiver Propagation Delay - tPLHR| Difference tEX Time to Exit Shutdown VOUT ≥ 3V, RLOAD at V+ = 3 KΩ Transition Slew Rate TA = 25°C RL = 3KΩ to 7KΩ VCC = 3.3V Measured from +3V to -3V or -3V to +3V CL = 150pF to 1000pF CL = 150pF to 2500pF (Note 1) Transmitter Skew is measured at the transmitter zero cross points. 4/11 Max. 250 (Note 1) SRT Typ. 6 4 Unit Kbps 0.15 µs 150 ns 100 ns 20 µs 8 8 30 30 V/µs V/µs ST3384 TYPICAL OPERATING CIRCUIT CAPACITANCE VALUE (µF) C1 C2 C3 C4 Cbypass 0.1 0.1 0.1 0.1 0.1 5/11 ST3384 TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified Tj = 25°C) Figure 1 : Loopback Test Result at 120 kbps Figure 3 : Transmitter Outputs Exiting Shutdown or Powering Up VCC = 3.3 V, CI - C4=0.1µF VCC = 5 V, CI - C4=0.1µF Figure 2 : Loopback Test Result at 250 kbps VCC = 3.3 V, CI - C4=0.1µF 6/11 ST3384 SO-18 MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. MIN. TYP. MAX. A 2.35 2.65 0.092 0.104 A1 0.1 0.3 0.004 0.012 A2 2.55 0.100 B 0.33 0.51 0.013 0.020 C 0.23 0.32 0.009 0.012 D 11.35 11.75 0.447 0.462 E 7.4 7.6 0.291 0.299 e 1.27 0.050 H 10.00 10.65 0.393 0.419 h 0.25 0.75 0.010 0.029 0.016 0.050 k 8 L ˚ (max.) 0.4 1.27 B A A2 h x 45û K e A1 L 0.10mm C H .004 Seating Plane D 10 E 18 1 9 SO18 0070768 7/11 ST3384 SSOP20 MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. A MIN. TYP. MAX. 2 A1 0.05 A2 1.65 b 0.079 0.002 1.75 1.85 0.065 0.22 0.38 0.009 0.015 c 0.09 0.25 0.004 0.010 D 6.9 7.2 7.5 0.272 0.283 0.295 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 0.069 0.65 BSC 0.073 0.0256 BSC K 0˚ 4˚ 8˚ 0˚ 4˚ 8˚ L 0.55 0.75 0.95 0.022 0.030 0.037 A A2 A1 b K e L E c D E1 PIN 1 IDENTIFICATION 1 0061436C 8/11 ST3384 Tape & Reel SO-18 MECHANICAL DATA mm. inch DIM. MIN. A TYP MAX. MIN. 330 MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 TYP. 0.504 22.4 0.519 0.882 Ao 10.8 11.0 0.425 0.433 Bo 11.9 12.1 0.468 0.476 Ko 2.9 3.1 0.114 0.122 Po 3.9 4.1 0.153 0.161 P 11.9 12.1 0.468 0.476 9/11 ST3384 Tape & Reel SSOP20 MECHANICAL DATA mm. inch DIM. MIN. A MAX. MIN. 330 13.2 TYP. MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 10/11 TYP 0.504 22.4 0.519 0.882 Ao 8.4 8.6 0.331 0.339 Bo 7.7 7.9 0.303 0.311 Ko 2.9 3.1 0.114 0.122 Po 3.9 4.1 0.153 0.161 P 11.9 12.1 0.468 0.476 ST3384 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 © 2003 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 11/11