Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers

    MAX232 Search Results

    MAX232 Result Highlights (5)

    Part ECAD Model Manufacturer Description Download Buy
    MAX232DWR Texas Instruments Dual EIA-232 driver and receiver 16-SOIC 0 to 70 Visit Texas Instruments Buy
    MAX232ECN Texas Instruments Dual RS-232 Driver/Receiver with IEC61000-4-2 Protection 16-PDIP 0 to 70 Visit Texas Instruments Buy
    MAX232EIDW Texas Instruments Dual RS-232 Driver/Receiver with IEC61000-4-2 Protection 16-SOIC -40 to 85 Visit Texas Instruments Buy
    MAX232DWG4 Texas Instruments Dual EIA-232 driver and receiver 16-SOIC 0 to 70 Visit Texas Instruments
    MAX232IDW Texas Instruments Dual EIA-232 driver and receiver 16-SOIC -40 to 85 Visit Texas Instruments Buy
    SF Impression Pixel

    MAX232 Price and Stock

    Texas Instruments MAX232EIPW

    IC TRANSCEIVER FULL 2/2 16TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MAX232EIPW Tube 4,666 1
    • 1 $1.55
    • 10 $1.134
    • 100 $1.55
    • 1000 $0.82369
    • 10000 $0.77087
    Buy Now
    Rochester Electronics MAX232EIPW 5 1
    • 1 $0.7667
    • 10 $0.7667
    • 100 $0.7207
    • 1000 $0.6517
    • 10000 $0.6517
    Buy Now
    Chip-Germany GmbH MAX232EIPW 59
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Win Source Electronics MAX232EIPW 20,770
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.3772
    • 10000 $0.3772
    Buy Now

    Maxim Integrated Products MAX232ESE-

    IC TRANSCEIVER FULL 2/2 16SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MAX232ESE- Tube 4,376 1
    • 1 $7.91
    • 10 $5.499
    • 100 $4.2954
    • 1000 $4.2954
    • 10000 $4.2954
    Buy Now

    Texas Instruments MAX232EIPWR

    IC TRANSCEIVER FULL 2/2 16TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MAX232EIPWR Digi-Reel 2,287 1
    • 1 $1.06
    • 10 $0.767
    • 100 $0.6108
    • 1000 $0.52902
    • 10000 $0.52902
    Buy Now
    MAX232EIPWR Cut Tape 2,287 1
    • 1 $1.06
    • 10 $0.767
    • 100 $0.6108
    • 1000 $0.52902
    • 10000 $0.52902
    Buy Now
    MAX232EIPWR Reel 2,000 2,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.48621
    Buy Now

    Maxim Integrated Products MAX232CWE-

    IC TRANSCEIVER FULL 2/2 16SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MAX232CWE- Tube 1,579 1
    • 1 $8.11
    • 10 $5.435
    • 100 $8.11
    • 1000 $3.4515
    • 10000 $3.4515
    Buy Now

    Maxim Integrated Products MAX232EWE-T

    IC TRANSCEIVER FULL 2/2 16SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MAX232EWE-T Cut Tape 1,483 1
    • 1 $8.81
    • 10 $5.936
    • 100 $4.3387
    • 1000 $3.86256
    • 10000 $3.86256
    Buy Now
    MAX232EWE-T Digi-Reel 1,483 1
    • 1 $8.81
    • 10 $5.936
    • 100 $4.3387
    • 1000 $3.86256
    • 10000 $3.86256
    Buy Now
    MAX232EWE-T Reel 1,000 1,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 $3.86255
    • 10000 $3.86255
    Buy Now
    Win Source Electronics MAX232EWE-T 11,045
    • 1 -
    • 10 -
    • 100 $1.0749
    • 1000 $0.7166
    • 10000 $0.7166
    Buy Now

    MAX232 Datasheets (445)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    MAX232 Maxim Integrated Products +5V-Powered, Multichannel RS-232 Drivers/Receivers Original PDF
    MAX232 Maxim Integrated Products DUAL EIA-232 DRIVER/RECEIVER Original PDF
    MAX232 Maxim Integrated Products +5V-Powered, Multichannel RS-232 Drivers-Receivers Original PDF
    MAX232 Maxim Integrated Products +5V-Powered, Multichannel RS-232 Drivers-Receivers Original PDF
    MAX232 Maxim Integrated Products +5V Powered, Multichannel RS-232 Driver Receivers Original PDF
    MAX232 Texas Instruments DUAL EIA-232 DRIVER/RECEIVER Original PDF
    MAX232 Unknown Interface IC/Device Data Book (Japanese) Scan PDF
    MAX2320 Maxim Integrated Products Evaluation Kit for the MAX2320-MAX2321-MAX2322-MAX2324-MAX2326-MAX2327 Original PDF
    MAX2320 Maxim Integrated Products Adjustable, High-Linearity, SiGe Dual-Band LNA/Mixer ICs Original PDF
    MAX2320EUP Maxim Integrated Products Adjustable, High-Linearity, SiGe, Dual-Band, LNA/Mixer ICs Original PDF
    MAX2320EUP Maxim Integrated Products Adjustable, High-Linearity, SiGe Dual-Band LNA/Mixer ICs Original PDF
    MAX2320EUP+ Maxim Integrated Products Adjustable, High-Linearity, SiGe, Dual-Band, LNA/Mixer ICs Original PDF
    MAX2320EUP+T Maxim Integrated Products Adjustable, High-Linearity, SiGe, Dual-Band, LNA/Mixer ICs Original PDF
    MAX2320EUP-T Maxim Integrated Products Adjustable, High-Linearity, SiGe, Dual-Band, LNA/Mixer ICs Original PDF
    MAX2320EUP-T Maxim Integrated Products Adjustable, High-Linearity, SiGe, Dual-Band, LNA/Mixer ICs Original PDF
    MAX2320EVKIT Maxim Integrated Products Evaluation Kits for the MAX2320/MAX2321/MAX2322/ MAX2324/MAX2326/MAX2327 Original PDF
    MAX2321 Maxim Integrated Products Evaluation Kit for the MAX2320-MAX2321-MAX2322-MAX2324-MAX2326-MAX2327 Original PDF
    MAX2321 Maxim Integrated Products Adjustable, High-Linearity, SiGe Dual-Band LNA/Mixer ICs Original PDF
    MAX2321EUP Maxim Integrated Products Adjustable, High-Linearity, SiGe, Dual-Band, LNA/Mixer ICs Original PDF
    MAX2321EUP Maxim Integrated Products Adjustable, High-Linearity, SiGe Dual-Band LNA/Mixer ICs Original PDF
    ...

    MAX232 Datasheets Context Search

    Catalog Datasheet MFG & Type Document Tags PDF

    MAX232E

    Abstract: ma232ec
    Text: MAX232E www.ti.com SLLS723B – APRIL 2006 – REVISED NOVEMBER 2009 DUAL RS-232 DRIVER/RECEIVER WITH IEC61000-4-2 PROTECTION Check for Samples: MAX232E FEATURES 1 • • • • • • • Meets or Exceeds TIA/RS-232-F and ITU Recommendation V.28 Operates From a Single 5-V Power Supply


    Original
    MAX232E SLLS723B RS-232 IEC61000-4-2 TIA/RS-232-F 15-kV IEC61000-4-2, MAX232E ma232ec PDF

    DS232A

    Abstract: DS232A-N DS232AR DS232AR-N DS232AS DS232AS-N LT1181A MAX232A
    Text: DS232A Dual RS-232 Transmitter/Receiver www.dalsemi.com FEATURES PIN ASSIGNMENT Compatible with LT1181A and MAX232A High data rate - 250 kbits/sec under load 16-pin DIP or SOIC package 20-pin TSSOP package for height restricted applications Operate from single +5V power


    Original
    DS232A RS-232 LT1181A MAX232A 16-pin 20-pin EIA-232E DS232A-N DS232A DS232A-N DS232AR DS232AR-N DS232AS DS232AS-N MAX232A PDF

    RS232 MAX232 smd

    Abstract: MAX232 smd 5962-8987701EA 5962-89877012C MAX232MJE/883B 5962-8987 GDIP1-T20
    Text: SCOPE: +5V-Powered Multi-Channel RS-232 Drivers/Receivers Device Type 01 02 03 04 05 06 07 08 Generic Number MAX232M x /883B MAX230MJP/883B MAX231MJD/883B MAX234MJE/883B MAX236MRG/883B MAX237MRG/883B MAX238MRG/883B MAX239MRG/883B Pkg Code J16 & L20 J20 J14


    Original
    RS-232 MAX232M /883B MAX230MJP/883B MAX231MJD/883B MAX234MJE/883B MAX236MRG/883B MAX237MRG/883B MAX238MRG/883B MAX239MRG/883B RS232 MAX232 smd MAX232 smd 5962-8987701EA 5962-89877012C MAX232MJE/883B 5962-8987 GDIP1-T20 PDF

    MAX232CPE

    Abstract: pic16f628 PIC16F628 project MAX232CPE application sheet 9-12V project RF Transistors PIC16F62 electronic circuit project free download transistor data sheet
    Text: Components enclosed in dashed boxes are part of the Original Serial CWSender project and are not required for this Serial DDS Controller PIC16F628 MAX232CPE 9-12V +V DDS Daughtercard 8 Out 6 5 Gnd Serial DDS Controller Data 3 2 Clock 1 Load Dave Ek, NK0E George Heron, N2APB


    Original
    PIC16F628 MAX232CPE MAX232CPE pic16f628 PIC16F628 project MAX232CPE application sheet 9-12V project RF Transistors PIC16F62 electronic circuit project free download transistor data sheet PDF

    5962-9456504mva

    Abstract: MX7502SQ 428M MX753747 IH5048
    Text: SCOPE: +5V-POWERED MULTI-CHANNEL RS-232 DRIVERS/RECEIVERS Device Type 01 02 03 04 05 Generic Number MAX220 x /883B MAX222(x)/883B MAX232A(x)/883B MAX242(x)/883B MAX243(x)/883B Pkg Code J16 & L20 J18 & L20 J16 & L20 J18 & L20 J16 & L20 Case Outline(s). The case outlines shall be designated in Mil-Std-1835 and as follows:


    Original
    RS-232 MAX220 /883B MAX222 MAX232A MAX242 MAX243 5962-9456504mva MX7502SQ 428M MX753747 IH5048 PDF

    Untitled

    Abstract: No abstract text available
    Text: MAX232, MAX232I DUAL EIAĆ232 DRIVERS/RECEIVERS ą ąą SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004 MAX232 . . . D, DW, N, OR NS PACKAGE MAX232I . . . D, DW, OR N PACKAGE TOP VIEW D Meets or Exceeds TIA/EIA-232-F and ITU D D D D D D D D Recommendation V.28


    Original
    MAX232, MAX232I SLLS047L MAX232 TIA/EIA-232-F 000-V A114-A) 15-kV MAX202 PDF

    MAX232 dip

    Abstract: max232 MAX232 application notes MAX232I 5v max232 driver of max232 driver max232 application MAXIM MAX232 texas instruments max232 max232 texas
    Text: MAX232, MAX232I DUAL EIA-232 DRIVER/RECEIVER SLLS047G – FEBRUARY 1989 – 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 ± 30-V Input Levels Low Supply Current . . . 8 mA Typical


    Original
    MAX232, MAX232I EIA-232 SLLS047G TIA/EIA-232-F MAX232 TIA/EIA-232-F MIL-STD-883, MAX232 dip max232 MAX232 application notes MAX232I 5v max232 driver of max232 driver max232 application MAXIM MAX232 texas instruments max232 max232 texas PDF

    74HC00

    Abstract: RX3 -G MAX232CSE XC68HC705K1CDW RX-3 TX2 RX2 5PA7 74hc00 on DSP56002 MBRS120T3
    Text: 1 6 2 7 3 8 4 9 5 1 6 2 7 3 8 4 9 5 OPTIONAL TERMINAL P5 OnCE P4 TX2 TX3 2 4 6 8 (STANDARD) 13 14 8 7 TX2 RX3 TX3 4 5 RX2 1UF RX2 RX3 TX3 RX3 TX2 RX2 C2+ C2- 2 U5 DO2 C1+ V C1C C 6 V S S 1UF C16 1 5 G DI3 N D DO3 MAX232CSE DI2 V D D 1 6 VCC 1UF C14 P4-3 DATA TO COMPUTER


    Original
    MAX232CSE XC68HC705K1CDW MBRS120T3 74HC00 DSP56002 RS232/OnCE 56K2EVM 74HC00 RX3 -G XC68HC705K1CDW RX-3 TX2 RX2 5PA7 74hc00 on MBRS120T3 PDF

    Untitled

    Abstract: No abstract text available
    Text: MAX232, MAX232I DUAL EIAĆ232 DRIVERS/RECEIVERS ą ąą SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004 D Meets or Exceeds TIA/EIA-232-F and ITU D D D D D D D D MAX232 . . . D, DW, N, OR NS PACKAGE MAX232I . . . D, DW, OR N PACKAGE TOP VIEW Recommendation V.28


    Original
    MAX232, MAX232I EIA232 SLLS047L TIA/EIA-232-F 000-V A114-A) 15-kV MAX202 TIA/EIA-232-F, PDF

    ma232ec

    Abstract: MAX232E MA232 max232 MAX232EIDWR MAX232ECD MAX232ECDR MAX232ECDW MAX232ECN
    Text: MAX232E www.ti.com SLLS723B – APRIL 2006 – REVISED NOVEMBER 2009 DUAL RS-232 DRIVER/RECEIVER WITH IEC61000-4-2 PROTECTION Check for Samples: MAX232E FEATURES 1 • • • • • • • Meets or Exceeds TIA/RS-232-F and ITU Recommendation V.28 Operates From a Single 5-V Power Supply


    Original
    MAX232E SLLS723B RS-232 IEC61000-4-2 TIA/RS-232-F 15-kV IEC61000-4-2, ma232ec MAX232E MA232 max232 MAX232EIDWR MAX232ECD MAX232ECDR MAX232ECDW MAX232ECN PDF

    24-pin MAX232 converter

    Abstract: MAX232E MAX202E MAX203E MAX205E MAX213E
    Text: 19-0175; Rev 3; 5/96 ±15kV ESD-Protected, +5V RS-232 Transceivers _Features The MAX202EMAX213E, MAX232E/MAX241E line drivers/receivers are designed for RS-232 and V.28 communications in harsh environments. Each transmitter output and receiver input is protected


    Original
    RS-232 MAX202E MAX213E, MAX232E/MAX241E EIA/TIA-232E 120kbps, EIA/TIA-232E MAX211E/MAX213E/MAX241E 28pin 24-pin MAX232 converter MAX232E MAX203E MAX205E MAX213E PDF

    max232dr

    Abstract: MAX232N MAX232DW MAX232IDW MAX232IN MAX232D MAX232DE4
    Text: MAX232, MAX232I DUAL EIAĆ232 DRIVERS/RECEIVERS ą ąą SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004 D Meets or Exceeds TIA/EIA-232-F and ITU D D D D D D D D MAX232 . . . D, DW, N, OR NS PACKAGE MAX232I . . . D, DW, OR N PACKAGE TOP VIEW Recommendation V.28


    Original
    MAX232, MAX232I EIA232 SLLS047L TIA/EIA-232-F 000-V A114-A) 15-kV MAX202 TIA/EIA-232-F, max232dr MAX232N MAX232DW MAX232IDW MAX232IN MAX232D MAX232DE4 PDF

    Taiyo 93-7

    Abstract: No abstract text available
    Text: 19-1736; Rev 0; 7/00 Triple/Dual-Mode CDMA LNA/Mixers _Features The MAX2323/MAX2325 are low-noise amplifier LNA plus mixer ICs optimized for code-division multiple-access (CDMA) applications in both cellular and PCS bands. The


    Original
    MAX2323/MAX2325 MAX2323 MAX2325 MAX2323/MAX2325 Taiyo 93-7 PDF

    MAX232DW

    Abstract: MAX232IDW MAX232IN MAX232N MAX232D MAX232 MAX232DE4
    Text: MAX232, MAX232I DUAL EIAĆ232 DRIVERS/RECEIVERS ą ąą SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004 D Meets or Exceeds TIA/EIA-232-F and ITU D D D D D D D D MAX232 . . . D, DW, N, OR NS PACKAGE MAX232I . . . D, DW, OR N PACKAGE TOP VIEW Recommendation V.28


    Original
    MAX232, MAX232I EIA232 SLLS047L TIA/EIA-232-F 000-V A114-A) 15-kV MAX202 TIA/EIA-232-F, MAX232DW MAX232IDW MAX232IN MAX232N MAX232D MAX232 MAX232DE4 PDF

    Untitled

    Abstract: No abstract text available
    Text: MAX232E www.ti.com SLLS723B – APRIL 2006 – REVISED NOVEMBER 2009 DUAL RS-232 DRIVER/RECEIVER WITH IEC61000-4-2 PROTECTION Check for Samples: MAX232E FEATURES 1 • • • • • • • Meets or Exceeds TIA/RS-232-F and ITU Recommendation V.28 Operates From a Single 5-V Power Supply


    Original
    MAX232E SLLS723B RS-232 IEC61000-4-2 TIA/RS-232-F 15-kV IEC61000-4-2, PDF

    MAX232N

    Abstract: No abstract text available
    Text: MAX232, MAX232I DUAL EIAĆ232 DRIVERS/RECEIVERS ą ąą SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004 D Meets or Exceeds TIA/EIA-232-F and ITU D D D D D D D D MAX232 . . . D, DW, N, OR NS PACKAGE MAX232I . . . D, DW, OR N PACKAGE TOP VIEW Recommendation V.28


    Original
    MAX232, MAX232I SLLS047L TIA/EIA-232-F MAX232 000-V A114-A) 15-kV MAX202 MAX232N PDF

    MAX232

    Abstract: max232 diagram max232 block diagram MAX232 application notes simple switch block diagram UV diode datasheet max-232 MAX232 integrated chips
    Text: SIMPLE CIRCUIT Measure Sound Strength and Output to RS-232 Author: FIGURE 1: Jerry Farmer Myriad Development Co. Lakewood, CO Myriad_Dev@compuserve.com Crystal UV Log SIMPLE BLOCK DIAGRAM 12 16 SW 1 PICmicro 1 MAX232 4 Includes op-amp Do NOT Mount to frame


    Original
    RS-232 MAX232 DS40160A/MP 035-page MAX232 max232 diagram max232 block diagram MAX232 application notes simple switch block diagram UV diode datasheet max-232 MAX232 integrated chips PDF

    MAX232

    Abstract: No abstract text available
    Text: MAX232, MAX232I DUAL EIAĆ232 DRIVERS/RECEIVERS ą ąą SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004 D Meets or Exceeds TIA/EIA-232-F and ITU D D D D D D D D MAX232 . . . D, DW, N, OR NS PACKAGE MAX232I . . . D, DW, OR N PACKAGE TOP VIEW Recommendation V.28


    Original
    MAX232, MAX232I EIA232 SLLS047L TIA/EIA-232-F 000-V A114-A) 15-kV MAX202 TIA/EIA-232-F, MAX232 PDF

    Taiyo 93-7

    Abstract: MAX2323 MAX2325 UMK105CH101JW
    Text: 19-1736; Rev 0; 7/00 Triple/Dual-Mode CDMA LNA/Mixers _Features The MAX2323/MAX2325 are low-noise amplifier LNA plus mixer ICs optimized for code-division multiple-access (CDMA) applications in both cellular and PCS bands. The


    Original
    MAX2323/MAX2325 MAX2323 MAX2325 MAX2323/MAX2325 Taiyo 93-7 UMK105CH101JW PDF

    max232 16 pin diagram with pin function

    Abstract: MAX232 pin diagram MAX232 14 pin JESD-020-A MAX232 16 pin MAX232 all pin diagram MAX232 std MAX232 application notes max232 datasheet max232 diagram
    Text: MAX232xxE Rev. A RELIABILITY REPORT FOR MAX232xxE PLASTIC ENCAPSULATED DEVICES May 11th, 2003 MAXIM INTEGRATED PRODUCTS 120 SAN GABRIEL DR. SUNNYVALE, CA 94086 Written by Reviewed by Jim Pedicord Quality Assurance Reliability Lab Manager Bryan J. Preeshl Quality Assurance


    Original
    MAX232xxE MAX232 100pf max232 16 pin diagram with pin function MAX232 pin diagram MAX232 14 pin JESD-020-A MAX232 16 pin MAX232 all pin diagram MAX232 std MAX232 application notes max232 datasheet max232 diagram PDF

    MAX232D

    Abstract: MAX232I MAX202, MAX232 MAX232 MAX232N MAX232DW MAX232IDW MAX232IN MAX232DE4 MAX202
    Text: MAX232, MAX232I DUAL EIAĆ232 DRIVERS/RECEIVERS ą ąą SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004 D Meets or Exceeds TIA/EIA-232-F and ITU D D D D D D D D MAX232 . . . D, DW, N, OR NS PACKAGE MAX232I . . . D, DW, OR N PACKAGE TOP VIEW Recommendation V.28


    Original
    MAX232, MAX232I EIA232 SLLS047L TIA/EIA-232-F MAX232 000-V A114-A) 15-kV MAX232D MAX232I MAX202, MAX232 MAX232 MAX232N MAX232DW MAX232IDW MAX232IN MAX232DE4 MAX202 PDF

    MAX232 application notes

    Abstract: MAX232 MAXIM MAX232 5v max232 driver MAX232I T21N max232 application texas instruments max232 TIA-232 max232 texas
    Text: MAX232, MAX232I DUAL EIA-232 DRIVER/RECEIVER SLLS047D - FEBRUARY 1989 - REVISED MAY 1995 • Operates With Single 5-V Power Supply dw o r n p a c k a g e • LinBiCMOS Process Technology top v ie w • Two Drivers and Two Receivers C 1+ [ vs + [ C 1- [


    OCR Scan
    MAX232, MAX232I EIA-232 SLLS047D EIA/TIA-232-E MAX232 MIL-STD-883, MAX232 application notes MAXIM MAX232 5v max232 driver MAX232I T21N max232 application texas instruments max232 TIA-232 max232 texas PDF

    MAX232AEWE

    Abstract: max222 MAX233ACPP
    Text: yi/iyjxi/i/i 19-289, Rev.O; 4/91 H igh-Speed +5V-P ow ered R S -232 D rivers/R eceivers _ ♦ 116kbits/sec Guaranteed Data Rate except MAX220 MAX220: A low-power, pin-compatible upgrade of the MAX232, with a typical supply current of only 0.5mA.


    OCR Scan
    116kbits/sec MAX220) MAX220: MAX232, 220/222/232A /233A AX220/222/232A/233A/242/243 EIA-232D 116kbits/sec MAX232AEWE max222 MAX233ACPP PDF

    max232 internal diagram

    Abstract: MAX232 pin diagram DS14C232 TSC232
    Text: National DS14C232 e ? Semiconductor DS14C232 Low Power +5V Powered TIA/EIA-232 Dual Driver/Receiver Features • Pin compatible with industry standard MAX232, LT1081, ICL232 and TSC232 ■ Single +5V power supply ■ Low power— lcc 3.0 mA maximum ■ DS14C232C meets TIA/EIA-232-E RS-232 and CCITT


    OCR Scan
    DS14C232 DS14C232 TIA/EIA-232 DS14C232T DS14C232E/J: S14C2 DS14C232CN, DS14C232CM, max232 internal diagram MAX232 pin diagram TSC232 PDF