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

    MAX232IDR Search Results

    MAX232IDR Result Highlights (2)

    Part
    ECAD Model
    Manufacturer
    Description
    Download
    Buy
    MAX232IDR Texas Instruments Dual EIA-232 driver and receiver 16-SOIC -40 to 85 Visit Texas Instruments Buy
    MAX232IDRG4 Texas Instruments Dual EIA-232 Driver/Receiver 16-SOIC -40 to 85 Visit Texas Instruments Buy
    SF Impression Pixel

    MAX232IDR Price and Stock

    Select Manufacturer

    Texas Instruments MAX232IDR

    IC TRANSCEIVER FULL 2/2 16SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MAX232IDR Cut Tape 3,431 1
    • 1 $0.72
    • 10 $0.516
    • 100 $0.4055
    • 1000 $0.34773
    • 10000 $0.34773
    Buy Now
    MAX232IDR Digi-Reel 3,431 1
    • 1 $0.72
    • 10 $0.516
    • 100 $0.4055
    • 1000 $0.34773
    • 10000 $0.34773
    Buy Now
    MAX232IDR Reel 2,500 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.32028
    Buy Now
    Mouser Electronics MAX232IDR 11,374
    • 1 $0.72
    • 10 $0.516
    • 100 $0.406
    • 1000 $0.348
    • 10000 $0.319
    Buy Now
    Verical MAX232IDR 1,059 20
    • 1 -
    • 10 -
    • 100 $0.3833
    • 1000 $0.2988
    • 10000 $0.2988
    Buy Now
    Arrow Electronics MAX232IDR Cut Strips 1,059 6 Weeks 1
    • 1 $0.6595
    • 10 $0.4862
    • 100 $0.3833
    • 1000 $0.2988
    • 10000 $0.2988
    Buy Now
    Bristol Electronics MAX232IDR 2,440
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    MAX232IDR 28
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Quest Components MAX232IDR 1,952
    • 1 $1.083
    • 10 $1.083
    • 100 $1.083
    • 1000 $0.4332
    • 10000 $0.3791
    Buy Now
    TME MAX232IDR 1
    • 1 $0.849
    • 10 $0.749
    • 100 $0.574
    • 1000 $0.452
    • 10000 $0.452
    Get Quote
    Ameya Holding Limited MAX232IDR 249,917
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    ComSIT USA MAX232IDR 12,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Chip One Stop MAX232IDR Cut Tape 1,838 0 Weeks, 1 Days 5
    • 1 -
    • 10 $0.447
    • 100 $0.352
    • 1000 $0.31
    • 10000 $0.31
    Buy Now
    New Advantage Corporation MAX232IDR 1,978 1
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.8136
    • 10000 $0.7593
    Buy Now
    Vyrian MAX232IDR 46,333
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Win Source Electronics MAX232IDR 36,710
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.3333
    • 10000 $0.3333
    Buy Now

    Rochester Electronics LLC MAX232IDR

    IC TRANSCEIVER FULL 2/2 16SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MAX232IDR Bulk
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now

    Texas Instruments MAX232IDRG4

    IC TRANSCEIVER FULL 2/2 16SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MAX232IDRG4 Reel 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.35517
    Buy Now
    Vyrian MAX232IDRG4 2,220
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Win Source Electronics MAX232IDRG4 36,820
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.3333
    • 10000 $0.3333
    Buy Now

    Texas Instruments MAX232IDRE4

    Interface ICs
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Vyrian MAX232IDRE4 967
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote

    MAX232IDR Datasheets (8)

    Part
    ECAD Model
    Manufacturer
    Description
    Curated
    Datasheet Type
    PDF
    MAX232IDR Texas Instruments Dual EIA-232 Driver/Receiver 16-SOIC -40 to 85 Original PDF
    MAX232IDR Texas Instruments Dual EIA-232 Driver/Receiver Original PDF
    MAX232IDR Texas Instruments MAX232 - Dual EIA-232 Driver/Receiver 16-SOIC -40 to 85 Original PDF
    MAX232IDRE4 Texas Instruments Dual EIA-232 Driver/Receiver 16-SOIC -40 to 85 Original PDF
    MAX232IDRE4 Texas Instruments Dual EIA-232 Driver/Receiver Original PDF
    MAX232IDRE4 Texas Instruments MAX232 - Dual EIA-232 Driver/Receiver 16-SOIC -40 to 85 Original PDF
    MAX232IDRG4 Texas Instruments MAX232 - Dual EIA-232 Driver/Receiver 16-SOIC -40 to 85 Original PDF
    MAX232IDRG4 Texas Instruments Dual EIA-232 Driver/Receiver 16-SOIC -40 to 85 Original PDF

    MAX232IDR Datasheets Context Search

    Catalog Datasheet
    Type
    Document Tags
    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

    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

    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

    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

    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: 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

    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

    interface zigbee with max232

    Abstract: MAX232D MAX232N max232dr MAX232N DATASHEET MAX232 MAX232DE4 MAX232DW MAX232IDW MAX232IN
    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 interface zigbee with max232 MAX232D MAX232N max232dr MAX232N DATASHEET MAX232 MAX232DE4 MAX232DW MAX232IDW MAX232IN PDF

    max232dr

    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, max232dr PDF

    MAX232

    Abstract: MAX232DE4 MAX232 total information
    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 MAX232DE4 MAX232 total information PDF

    max232dr

    Abstract: MAX232
    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 MAX232 PDF

    max232dr

    Abstract: MAX232 MAX232DE4 MAX232IDWR MAX232N DATASHEET MAX232N pin diagram MAX232I MAX232N MAX202 MAX232D
    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 max232dr MAX232 MAX232DE4 MAX232IDWR MAX232N DATASHEET MAX232N pin diagram MAX232I MAX232N MAX202 MAX232D PDF

    MAX232N pin diagram

    Abstract: MAX232N DATASHEET max232 MAX232N soic MAX202 circuit diagram max232n MAX232DE4 MAX232IN MAX232IDW MAX232DW
    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 MAX232N pin diagram MAX232N DATASHEET max232 MAX232N soic MAX202 circuit diagram max232n MAX232DE4 MAX232IN MAX232IDW MAX232DW PDF

    max232dr

    Abstract: MAX232 application notes interface zigbee with max232
    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 MAX232 application notes interface zigbee with max232 PDF

    MAX232DW

    Abstract: MAX232IDW MAX232IN MAX232N MAX232D MAX232 MAX232DE4 max232 application
    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 max232 application PDF

    MAX232

    Abstract: MAX232D MAX202 MAX232I MAX232N
    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 MAX232 MAX232D MAX202 MAX232I MAX232N PDF

    MAX232 application notes

    Abstract: MAX232 texas instruments max232 MAX232I
    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 application notes MAX232 texas instruments max232 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

    MAX232 application notes

    Abstract: MAX232 MAX232 footprint MAXIM MAX232 max232 texas texas instruments max232 MAX232DW MAX232IDW MAX232D max232 dip
    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 MIL-STD-883, SLYT010A SLLA067 MAX232 application notes MAX232 footprint MAXIM MAX232 max232 texas texas instruments max232 MAX232DW MAX232IDW MAX232D max232 dip PDF

    max232dr

    Abstract: MAX232N MAX232D interface zigbee with max232 MAX232DE4 MAX232DW MAX232IDW MAX232IN MAX232N pin diagram 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 max232dr MAX232N MAX232D interface zigbee with max232 MAX232DE4 MAX232DW MAX232IDW MAX232IN MAX232N pin diagram MAX202 PDF

    MAX232n

    Abstract: MAX202 circuit diagram MAX232 MAX232DW MAX232IDW MAX232IN MAX232D max232 free
    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, MAX232n MAX202 circuit diagram MAX232 MAX232DW MAX232IDW MAX232IN MAX232D max232 free PDF

    MAX232N pin diagram

    Abstract: MAX232DR MAX232 max232 16 pin diagram with pin function MAX232 Application MAX232 connection MAX232 integrated chips MAX232 pin diagram MAX232DR datasheet max232n
    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 MAX232N pin diagram MAX232DR MAX232 max232 16 pin diagram with pin function MAX232 Application MAX232 connection MAX232 integrated chips MAX232 pin diagram MAX232DR datasheet max232n PDF

    MAX232

    Abstract: MAX232D MAX232N MAX232DW MAX232IDW MAX232IN MAX232DE4 MAX232DR MAX202 MAX232I
    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 MAX232 MAX232D MAX232N MAX232DW MAX232IDW MAX232IN MAX232DE4 MAX232DR MAX202 MAX232I PDF

    MAX232 application notes

    Abstract: SLLS047L MAX232 MAX232I max232 diagram MAX202 MAX232D MAX232N
    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 MAX232 application notes MAX232 MAX232I max232 diagram MAX202 MAX232D MAX232N PDF