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MAX232

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MAX232

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     MAX232, MAX232I DUAL EIA-232 DRIVER/RECEIVER

     SLLS047G ?C FEBRUARY 1989 ?C REVISED AUGUST 1998

     D D D D D D D D

     D D

     Operates With Single 5-V Power Supply LinBiCMOS? Process Technology Two Drivers and Two Receivers ?À 30-V Input Levels Low Supply Current . . . 8 mA Typical Meets or Exceeds TIA/EIA-232-F and ITU Recommendation V.28 Designed to be Interchangeable With Maxim MAX232 Applications TIA/EIA-232-F Battery-Powered Systems Terminals Modems Computers ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015 Package Options Include Plastic Small-Outline (D, DW) Packages and Standard Plastic (N) DIPs

     D, DW, OR N PACKAGE (TOP VIEW)

     C1+ VS+ C1?C C2+ C2?C VS?C T2OUT R2IN

     1 2 3 4 5 6 7 8

     16 15 14 13 12 11 10 9

     VCC GND T1OUT R1IN R1OUT T1IN T2IN R2OUT

     logic symbol?

     VCC 16 C1+ C1 ?C C2 + C2 ?C T1IN T2IN R1OUT R2OUT 1 3 4 5 11 10 12 9 0V 15 GND ? This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. C1+ C1?C C2+ C2?C 14 T1OUT 7 13 8 R2IN T2OUT R1IN VCC 2VCC ?C 1.5 V ?C2VCC + 1.5 V 2 V S+ 6 VS ?C

     description

     The MAX232 device is a dual driver/receiver that includes a capacitive voltage generator to supply EIA-232 voltage levels from a single 5-V supply. Each receiver converts EIA-232 inputs to 5-V TTL/CMOS levels. These receivers have a typical threshold of 1.3 V and a typical hysteresis of 0.5 V, and can accept ?À 30-V inputs. Each driver converts TTL/CMOS input levels into EIA-232 levels. The driver, receiver, and voltage-generator functions are available as cells in the Texas Instruments LinASIC? library. The MAX232 is characterized for operation from 0?ãC to 70?ãC. The MAX232I is characterized for operation from ?C 40?ãC to 85?ãC.

     AVAILABLE OPTIONS PACKAGED DEVICES TA SMALL OUTLINE (D) MAX232D? MAX232ID? SMALL OUTLINE (DW) MAX232DW? MAX232IDW? PLASTIC DIP (N) MAX232N

     0?ãC to 70?ãC ?C 40?ãC to 85?ãC

     MAX232IN ? This device is available taped and reeled by adding an R to the part number (i.e., MAX232DR).

     Please be aware that an important notice concerning availability,

    standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. LinASIC and LinBiCMOS are trademarks of Texas Instruments Incorporated.

     PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

     Copyright ? 1998, Texas Instruments Incorporated

     POST OFFICE BOX 655303

     DALLAS, TEXAS 75265

     1

     MAX232, MAX232I DUAL EIA-232 DRIVER/RECEIVER

     SLLS047G ?C FEBRUARY 1989 ?C REVISED AUGUST 1998

     absolute maximum ratings over operating free-air temperature range (unless otherwise noted)?

     Input supply voltage range, VCC (see Note

    1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ?C 0.3 V to 6 V Positive output supply voltage range,

    VS+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC ?C 0.3 V to 15 V Negative output supply voltage range,

    VS ?C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ?C

    0.3 V to ?C15 V Input voltage range, VI:

    Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

     . . . . . . . . . . . . . . . . . ?C 0.3 V to VCC + 0.3 V

    Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

     . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ?À 30 V Output voltage range, VO: T1OUT,

    T2OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VS ?C ?C 0.3 V to VS+ + 0.3 V R1OUT,

    R2OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ?C 0.3 V to VCC + 0.3 V Short-circuit duration: T1OUT,

    T2OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unlimited Package thermal impedance, ?ÈJA (see Note 2): D

    package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113?ãC/W DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105?ãC/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78?ãC/W Storage temperature range,

    Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

     . . . . . . . . . . . . . . . . . . . ?C 65?ãC to 150?ãC Lead temperature 1,6 mm (1/16 inch) from case for 10

    seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260?ãC

     Stresses beyond those listed under ??absolute maximum ratings?? may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under ??recommended operating conditions?? is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: All voltage values are with respect to network ground terminal. 2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace length of zero.

     recommended operating conditions

     MIN Supply voltage, VCC High-level input voltage, VIH (T1IN,T2IN) Low-level input voltage, VIL (T1IN, T2IN) Receiver input voltage, R1IN, R2IN Operating free-air temperature,TA free air temperature T MAX232 MAX232I 0 ?C40 4.5 2 0.8 ?À30 70 85 NOM 5 MAX 5.5 UNIT V V V V ?ãC

     2

     POST OFFICE BOX 655303

     DALLAS, TEXAS 75265

     MAX232, MAX232I DUAL EIA-232 DRIVER/RECEIVER

     SLLS047G ?C FEBRUARY 1989 ?C REVISED AUGUST 1998

     electrical characteristics over recommended ranges of supply voltage and operating free-air temperature range (unless otherwise noted)

     PARAMETER VOH VOL VIT+ VIT?C Vhys ri ro IOS?ì IIS ICC High-level out ut voltage output Low-level Low level output voltage? Receiver positive-going input threshold voltage Receiver negative-going input threshold voltage Input hysteresis voltage Receiver input resistance Output resistance Short-circuit output current Short-circuit input current Supply current T1OUT, T2OUT R1OUT, R2OUT T1OUT, T2OUT R1OUT, R2OUT R1IN, R2IN R1IN, R2IN R1IN, R2IN R1IN, R2IN T1OUT, T2OUT T1OUT, T2OUT T1IN, T2IN TEST CONDITIONS RL = 3 k? to GND IOH = ?C 1 mA RL = 3 k? to GND IOL = 3.2 mA VCC = 5 V, VCC = 5 V, VCC = 5 V VCC = 5, VS+ = VS ?C = 0, VCC = 5.5 V, VI = 0 VCC = 5.5 V, TA = 25?ãC TA = 25?ãC TA = 25?ãC 0.8 0.2 TA = 25?ãC VO = ?À 2 V VO = 0 All outputs open, 3 300 ?À10 200 8 10 1.7 1.2 0.5 5 1 7 MIN 5 3.5 ?C7 ?C5 0.4 2.4 V V V V k? ? mA ?ÌA mA TYP? 7 MAX UNIT V

     All typical values are at VCC = 5 V, TA = 25?ãC. ? The algebraic convention, in which the least positive (most negative) value is designated minimum, is used in this data sheet for logic voltage levels only. ?ì Not more than one output should be shorted at a time.

     switching characteristics, VCC = 5 V, TA = 25?ãC

     PARAMETER tPLH(R) tPHL(R) SR SR(tr) Receiver propagation delay time, low- to high-level output Receiver propagation delay time, high- to low-level output Driver slew rate Driver transition region slew rate TEST CONDITIONS See Figure 1 See Figure 1 RL = 3 k? to 7 k?, See Figure

    2 See Figure 3 3 MIN TYP 500 500 30 MAX UNIT ns ns V/?Ìs V/?Ìs

     POST OFFICE BOX 655303

     DALLAS, TEXAS 75265

     3

     MAX232, MAX232I DUAL EIA-232 DRIVER/RECEIVER

     SLLS047G ?C FEBRUARY 1989 ?C REVISED AUGUST 1998

     PARAMETER MEASUREMENT INFORMATION

     VCC

     Pulse Generator (see Note A)

     R1IN or R2IN

     R1OUT or R2OUT

     RL = 1.3 k? See Note C

     CL = 50 pF (see Note B) TEST CIRCUIT ?Ü 10 ns 90% 50% 90% 50% ?Ü 10 ns 3V 10% tPLH VOH Output 1.5 V 1.5 V WAVEFORMS NOTES: A. The pulse generator has the following characteristics: ZO = 50 ?, duty cycle ?Ü 50%. B. CL includes probe and jig capacitance. C. All diodes are 1N3064 or equivalent. VOL 0V

     Input

     10%

     500 ns tPHL

     Figure 1. Receiver Test Circuit and Waveforms for tPHL and tPLH Measurements

     4

     POST OFFICE BOX 655303

     DALLAS, TEXAS 75265

     MAX232, MAX232I DUAL EIA-232 DRIVER/RECEIVER

     SLLS047G ?C FEBRUARY 1989 ?C REVISED AUGUST 1998

     PARAMETER MEASUREMENT INFORMATION

     Pulse Generator (see Note A) T1IN or T2IN T1OUT or T2OUT EIA-232 Output RL CL = 10 pF (see Note B)

     TEST CIRCUIT ?Ü 10 ns Input 10% 90% 50% 5 ?Ìs tPHL 90% Output tTHL SR 10% 10% tTLH 0.8 (V t OH ?CV ) OL 0.8 (V or t ?CV ) OL OH THL tPLH VOH VOL 90% 50% ?Ü 10 ns 3V 10% 0V

     90%

     +

     TLH WAVEFORMS

     NOTES: A. The pulse generator has the following characteristics: ZO = 50 ?, duty cycle ?Ü 50%. B. CL includes probe and jig capacitance.

     Figure 2. Driver Test Circuit and Waveforms for tPHL and tPLH Measurements (5-?Ìs input)

     Pulse Generator (see Note A) 3 k? EIA-232 Output CL = 2.5 nF

     TEST CIRCUIT ?Ü 10 ns Input 10% 90% 1.5 V 90% 1.5 V 10% tTLH 3V ?C3 V SR VOH VOL ?Ü 10 ns

     20 ?Ìs tTHL Output 3V ?C3 V

     +t

     THL

     6 V or t

     TLH

     WAVEFORMS NOTE A: The pulse generator has the following characteristics: ZO = 50 ?, duty cycle ?Ü 50%.

     Figure 3. Test Circuit and Waveforms for tTHL and tTLH Measurements (20-?Ìs input)

     POST OFFICE BOX 655303

     DALLAS, TEXAS 75265

     5

     MAX232, MAX232I DUAL EIA-232 DRIVER/RECEIVER

     SLLS047G ?C FEBRUARY 1989 ?C REVISED AUGUST 1998

     APPLICATION INFORMATION

     5V 16 1 1 ?ÌF 1 ?ÌF 3 4 5 11 From CMOS or TTL 10 12 To CMOS or TTL 9 0V 15 GND VCC C1+ C1?C C2+ C2?C VS ?C VS + 6 + 14 7 13 8 1 ?ÌF 1 ?ÌF 2 8.5 V ?C 8.5 V

     EIA-232 Output EIA-232 Output EIA-232 Input EIA-232 Input

     Figure 4. Typical Operating Circuit

     6

     POST OFFICE BOX 655303

     DALLAS, TEXAS 75265

     IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI??s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (??CRITICAL APPLICATIONS??). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER??S RISK. In order to minimize risks associated with the customer??s applications, adequate design and operating safeguards must be provided by the

    customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI??s publication of information regarding any third party??s products or services does not constitute TI??s approval, warranty or endorsement thereof.

     Copyright ? 1998, Texas Instruments Incorporated

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