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

    SN74AC244 Search Results

    SN74AC244 Result Highlights (6)

    Part ECAD Model Manufacturer Description Download Buy
    SN74AC244PWR Texas Instruments Octal Buffers/Drivers With 3-State Outputs 20-TSSOP -40 to 85 Visit Texas Instruments Buy
    SN74AC244N Texas Instruments Octal Buffers/Drivers With 3-State Outputs 20-PDIP -40 to 85 Visit Texas Instruments Buy
    SN74AC244DWR Texas Instruments Octal Buffers/Drivers With 3-State Outputs 20-SOIC -40 to 85 Visit Texas Instruments Buy
    SN74AC244MNSREP Texas Instruments Enhanced Product Octal Buffers/Drivers With 3-State Outputs 20-SO -55 to 125 Visit Texas Instruments Buy
    SN74AC244NSR Texas Instruments Octal Buffers/Drivers With 3-State Outputs 20-SO -40 to 85 Visit Texas Instruments Buy
    SN74AC244MDWREP Texas Instruments Enhanced Product Octal Buffers/Drivers With 3-State Outputs 20-SOIC -55 to 125 Visit Texas Instruments Buy
    SF Impression Pixel

    SN74AC244 Price and Stock

    Texas Instruments SN74AC244DGSR

    8-CH, 2-V TO 6-V BUFFERS WITH 3-
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SN74AC244DGSR Reel 5,000 5,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.32708
    Buy Now
    Mouser Electronics SN74AC244DGSR 4,990
    • 1 $0.85
    • 10 $0.754
    • 100 $0.588
    • 1000 $0.384
    • 10000 $0.321
    Buy Now

    Texas Instruments SN74AC244QDGSRQ1

    AUTOMOTIVE EIGHT-CHANNEL 2-V TO
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SN74AC244QDGSRQ1 Reel 5,000 5,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.38655
    Buy Now
    Mouser Electronics SN74AC244QDGSRQ1 5,000
    • 1 $1
    • 10 $0.891
    • 100 $0.695
    • 1000 $0.453
    • 10000 $0.379
    Buy Now

    Rochester Electronics LLC SN74AC244N

    SN74AC244 OCTAL BUFFERS/DRIVERS
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SN74AC244N Bulk 4,428 587
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.51
    • 10000 $0.51
    Buy Now

    Texas Instruments SN74AC244PWR

    IC BUFF NON-INVERT 6V 20TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SN74AC244PWR Reel 4,000 2,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.32703
    Buy Now
    SN74AC244PWR Cut Tape 1,004 1
    • 1 $0.84
    • 10 $0.754
    • 100 $0.5876
    • 1000 $0.38323
    • 10000 $0.38323
    Buy Now
    Mouser Electronics SN74AC244PWR 10,940
    • 1 $0.84
    • 10 $0.715
    • 100 $0.549
    • 1000 $0.383
    • 10000 $0.324
    Buy Now
    Newark SN74AC244PWR Cut Tape 1
    • 1 $1.09
    • 10 $1.04
    • 100 $0.907
    • 1000 $0.843
    • 10000 $0.843
    Buy Now
    Bristol Electronics SN74AC244PWR 901
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    TME SN74AC244PWR 3
    • 1 -
    • 10 $0.683
    • 100 $0.521
    • 1000 $0.434
    • 10000 $0.434
    Get Quote
    Ameya Holding Limited SN74AC244PWR 7,401
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Chip1Stop SN74AC244PWR Cut Tape 1,876
    • 1 $0.546
    • 10 $0.464
    • 100 $0.356
    • 1000 $0.305
    • 10000 $0.305
    Buy Now

    Texas Instruments SN74AC244DWR

    IC BUFF NON-INVERT 6V 20SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SN74AC244DWR Reel 4,000 2,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.3594
    Buy Now
    SN74AC244DWR Cut Tape 382 1
    • 1 $0.93
    • 10 $0.828
    • 100 $0.6458
    • 1000 $0.42117
    • 10000 $0.42117
    Buy Now
    Mouser Electronics SN74AC244DWR 2,351
    • 1 $0.81
    • 10 $0.695
    • 100 $0.535
    • 1000 $0.404
    • 10000 $0.359
    Buy Now
    Newark SN74AC244DWR Cut Tape 1
    • 1 $1.08
    • 10 $1.03
    • 100 $0.898
    • 1000 $0.834
    • 10000 $0.834
    Buy Now
    Bristol Electronics SN74AC244DWR 1,680 7
    • 1 -
    • 10 $0.75
    • 100 $0.4875
    • 1000 $0.21
    • 10000 $0.21
    Buy Now
    SN74AC244DWR 2,911
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    SN74AC244DWR 860
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    SN74AC244DWR 3,596
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Quest Components SN74AC244DWR 28
    • 1 $0.7755
    • 10 $0.6463
    • 100 $0.4653
    • 1000 $0.4653
    • 10000 $0.4653
    Buy Now
    SN74AC244DWR 320
    • 1 $0.91
    • 10 $0.91
    • 100 $0.4095
    • 1000 $0.273
    • 10000 $0.273
    Buy Now
    SN74AC244DWR 1,344
    • 1 $1
    • 10 $1
    • 100 $1
    • 1000 $0.26
    • 10000 $0.26
    Buy Now
    SN74AC244DWR 2,876
    • 1 $1.2925
    • 10 $1.2925
    • 100 $1.2925
    • 1000 $0.517
    • 10000 $0.4524
    Buy Now
    SN74AC244DWR 1,380
    • 1 $1.3045
    • 10 $1.3045
    • 100 $0.6523
    • 1000 $0.5218
    • 10000 $0.5218
    Buy Now
    Rochester Electronics SN74AC244DWR 33,583 1
    • 1 $0.4054
    • 10 $0.4054
    • 100 $0.3811
    • 1000 $0.3446
    • 10000 $0.3446
    Buy Now
    TME SN74AC244DWR 3
    • 1 -
    • 10 $0.759
    • 100 $0.586
    • 1000 $0.488
    • 10000 $0.488
    Get Quote
    Ameya Holding Limited SN74AC244DWR 16,388
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Chip1Stop SN74AC244DWR Cut Tape 1
    • 1 -
    • 10 $0.35
    • 100 $0.35
    • 1000 $0.35
    • 10000 $0.35
    Buy Now
    Component Electronics, Inc SN74AC244DWR 115
    • 1 $0.77
    • 10 $0.77
    • 100 $0.58
    • 1000 $0.5
    • 10000 $0.5
    Buy Now

    SN74AC244 Datasheets (95)

    Part ECAD Model Manufacturer Description Curated Type PDF
    SN74AC244 Texas Instruments Octal Buffers-Drivers With 3-State Outputs Original PDF
    SN74AC244 Texas Instruments OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS Original PDF
    SN74AC244DB Texas Instruments OCTAL BUFFER /DRIVER WITH 3-STATE OUTPUTS Original PDF
    SN74AC244DBLE Texas Instruments Octal Buffers/Drivers With 3-State Outputs 20-SSOP -40 to 85 Original PDF
    SN74AC244DBLE Texas Instruments OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS Original PDF
    SN74AC244DBLE Texas Instruments SN74AC244 - Octal Buffers/Drivers With 3-State Outputs 20-SSOP -40 to 85 Original PDF
    SN74AC244DBR Texas Instruments Octal Buffers/Drivers With 3-State Outputs 20-SSOP -40 to 85 Original PDF
    SN74AC244DBR Texas Instruments OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS Original PDF
    SN74AC244DBR Texas Instruments SN74AC244 - Octal Buffers/Drivers With 3-State Outputs 20-SSOP -40 to 85 Original PDF
    SN74AC244DBR Texas Instruments Logic - Buffers, Drivers, Receivers, Transceivers, Integrated Circuits (ICs), IC BUFF/DVR TRI-ST DUAL 20SSOP Original PDF
    SN74AC244DBRE4 Texas Instruments Octal Buffers/Drivers With 3-State Outputs 20-SSOP -40 to 85 Original PDF
    SN74AC244DBRE4 Texas Instruments Octal Buffers/Drivers With 3-State Outputs Original PDF
    SN74AC244DBRE4 Texas Instruments SN74AC244 - Octal Buffers/Drivers With 3-State Outputs 20-SSOP -40 to 85 Original PDF
    SN74AC244DBRE4 Texas Instruments Logic - Buffers, Drivers, Receivers, Transceivers, Integrated Circuits (ICs), IC BUFF/DVR TRI-ST DUAL 20SSOP Original PDF
    SN74AC244DBRG4 Texas Instruments Octal Buffers/Drivers With 3-State Outputs 20-SSOP -40 to 85 Original PDF
    SN74AC244DBRG4 Texas Instruments SN74AC244 - Octal Buffers/Drivers With 3-State Outputs 20-SSOP -40 to 85 Original PDF
    SN74AC244DBRG4 Texas Instruments Logic - Buffers, Drivers, Receivers, Transceivers, Integrated Circuits (ICs), IC BUFF/DVR TRI-ST DUAL 20SSOP Original PDF
    SN74AC244DW Texas Instruments Octal Buffer/Driver with 3-state Outputs Original PDF
    SN74AC244DW Texas Instruments Octal Buffers/Drivers With 3-State Outputs 20-SOIC -40 to 85 Original PDF
    SN74AC244DW Texas Instruments OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS Original PDF

    SN74AC244 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    Untitled

    Abstract: No abstract text available
    Text: SN74AC244-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCAS723B – OCTOBER 2003 – REVISED APRIL 2006 FEATURES • • • • • • • • 1 DW OR NS PACKAGE (TOP VIEW) Controlled Baseline – One Assembly/Test Site, One Fabrication Site


    Original
    PDF SN74AC244-EP SCAS723B

    MS-013

    Abstract: MSOI003E SN74AC244 SN74AC244MDWREP
    Text: SN74AC244ĆEP OCTAL BUFFER/DRIVER WITH 3ĆSTATE OUTPUTS SCAS723 − OCTOBER 2003 D Controlled Baseline D D D D D 2-V to 6-V VCC Operation D Inputs Accept Voltages to 6 V D Max tpd of 7.5 ns at 5 V − One Assembly/Test Site, One Fabrication Site Extended Temperature Performance of


    Original
    PDF SN74AC244EP SCAS723 MS-013 MSOI003E SN74AC244 SN74AC244MDWREP

    Untitled

    Abstract: No abstract text available
    Text: SN54AC244, SN74AC244 OCTAL BUFFERS/DRIVERS WITH 3ĆSTATE OUTPUTS SCAS514E − JUNE 1995 − REVISED OCTOBER 2003 D 2-V to 6-V VCC Operation D Inputs Accept Voltages to 6 V D Max tpd of 7.5 ns at 5 V SN54AC244 . . . J OR W PACKAGE SN74AC244 . . . DB, DW, N, NS, OR PW PACKAGE


    Original
    PDF SCAS514E SN54AC244, SN74AC244 AC244 scyd013 sdyu001x sgyc003d scyb017a

    Untitled

    Abstract: No abstract text available
    Text: SN54AC244, SN74AC244 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCAS514E − JUNE 1995 − REVISED OCTOBER 2003 D 2-V to 6-V VCC Operation D Inputs Accept Voltages to 6 V D Max tpd of 7.5 ns at 5 V SN54AC244 . . . J OR W PACKAGE SN74AC244 . . . DB, DW, N, NS, OR PW PACKAGE


    Original
    PDF SN54AC244, SN74AC244 SCAS514E SN54AC244 AC244

    Untitled

    Abstract: No abstract text available
    Text: SN74AC244-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCAS723B – OCTOBER 2003 – REVISED APRIL 2006 FEATURES • • • • • • • • 1 DW OR NS PACKAGE (TOP VIEW) Controlled Baseline – One Assembly/Test Site, One Fabrication Site


    Original
    PDF SN74AC244-EP SCAS723B

    Untitled

    Abstract: No abstract text available
    Text: SN74AC244ĆEP OCTAL BUFFER/DRIVER WITH 3ĆSTATE OUTPUTS SCAS723 − OCTOBER 2003 D Controlled Baseline D D D D D 2-V to 6-V VCC Operation D Inputs Accept Voltages to 6 V D Max tpd of 7.5 ns at 5 V − One Assembly/Test Site, One Fabrication Site Extended Temperature Performance of


    Original
    PDF SN74AC244EP SCAS723

    SN74AC244

    Abstract: SN74AC244-EP SN74AC244MDWREP SN74AC244MNSREP SN54AC244
    Text: SN74AC244-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCAS723B – OCTOBER 2003 – REVISED APRIL 2006 FEATURES • • • • • • • • 1 DW OR NS PACKAGE (TOP VIEW) Controlled Baseline – One Assembly/Test Site, One Fabrication Site


    Original
    PDF SN74AC244-EP SCAS723B SN74AC244 SN74AC244-EP SN74AC244MDWREP SN74AC244MNSREP SN54AC244

    SN74AC244

    Abstract: SN74AC244MDWREP
    Text: SN74AC244ĆEP OCTAL BUFFER/DRIVER WITH 3ĆSTATE OUTPUTS SCAS723 − OCTOBER 2003 D Controlled Baseline D D D D D 2-V to 6-V VCC Operation D Inputs Accept Voltages to 6 V D Max tpd of 7.5 ns at 5 V − One Assembly/Test Site, One Fabrication Site Extended Temperature Performance of


    Original
    PDF SN74AC244EP SCAS723 SN74AC244 SN74AC244MDWREP

    AC244

    Abstract: SN54AC244 SN74AC244 SN74AC244DBR SN74AC244DW SN74AC244DWR SN74AC244N SN74AC244NSR SN74AC244PW SN74AC244PWR
    Text: SN54AC244, SN74AC244 OCTAL BUFFERS/DRIVERS WITH 3ĆSTATE OUTPUTS SCAS514E − JUNE 1995 − REVISED OCTOBER 2003 D 2-V to 6-V VCC Operation D Inputs Accept Voltages to 6 V D Max tpd of 7.5 ns at 5 V SN54AC244 . . . J OR W PACKAGE SN74AC244 . . . DB, DW, N, NS, OR PW PACKAGE


    Original
    PDF SN54AC244, SN74AC244 SCAS514E SN54AC244 AC244 SN54AC244 SN74AC244 SN74AC244DBR SN74AC244DW SN74AC244DWR SN74AC244N SN74AC244NSR SN74AC244PW SN74AC244PWR

    AC244

    Abstract: SN54AC244 SN74AC244 scas514c
    Text: SN54AC244, SN74AC244 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCAS514C – JUNE 1995 – REVISED SEPTEMBER 1996 D EPIC  Enhanced-Performance Implanted CMOS 1-µm Process Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW)


    Original
    PDF SN54AC244, SN74AC244 SCAS514C SN54AC244 AC244 SN54AC244 SN74AC244 scas514c

    Untitled

    Abstract: No abstract text available
    Text: SN54AC244, SN74AC244 OCTAL BUFFERS/DRIVERS WITH 3ĆSTATE OUTPUTS SCAS514E − JUNE 1995 − REVISED OCTOBER 2003 D 2-V to 6-V VCC Operation D Inputs Accept Voltages to 6 V D Max tpd of 7.5 ns at 5 V SN54AC244 . . . J OR W PACKAGE SN74AC244 . . . DB, DW, N, NS, OR PW PACKAGE


    Original
    PDF SCAS514E SN54AC244, SN74AC244 AC244

    Untitled

    Abstract: No abstract text available
    Text: SN54AC244, SN74AC244 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCAS514C – JUNE 1995 – REVISED SEPTEMBER 1996 D EPIC  Enhanced-Performance Implanted CMOS 1-µm Process Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW)


    Original
    PDF SN54AC244, SN74AC244 SCAS514C SN54AC244 SN74AC244 AC244 SDYA012 10-PF SZZU001B, SDYU001M,

    Untitled

    Abstract: No abstract text available
    Text: SN74AC244-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCAS723B – OCTOBER 2003 – REVISED APRIL 2006 FEATURES • • • • • • • • 1 DW OR NS PACKAGE (TOP VIEW) Controlled Baseline – One Assembly/Test Site, One Fabrication Site


    Original
    PDF SN74AC244-EP SCAS723B

    Untitled

    Abstract: No abstract text available
    Text: SN74AC244-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCAS723A – OCTOBER 2003 – REVISED MARCH 2006 FEATURES • • • • • • • • 1 DW OR NS PACKAGE (TOP VIEW) Controlled Baseline – One Assembly/Test Site, One Fabrication Site


    Original
    PDF SN74AC244-EP SCAS723A

    ac244

    Abstract: No abstract text available
    Text: SN54AC244, SN74AC244 OCTAL BUFFERS/DRIVERS WITH 3ĆSTATE OUTPUTS SCAS514E − JUNE 1995 − REVISED OCTOBER 2003 D 2-V to 6-V VCC Operation D Inputs Accept Voltages to 6 V D Max tpd of 7.5 ns at 5 V SN54AC244 . . . J OR W PACKAGE SN74AC244 . . . DB, DW, N, NS, OR PW PACKAGE


    Original
    PDF SCAS514E SN54AC244, SN74AC244 AC244

    AC244

    Abstract: SN54AC244 SN74AC244 SN74AC244DBR SN74AC244DW SN74AC244DWR SN74AC244N SN74AC244NSR SN74AC244PW SN74AC244PWR
    Text: SN54AC244, SN74AC244 OCTAL BUFFERS/DRIVERS WITH 3ĆSTATE OUTPUTS SCAS514E − JUNE 1995 − REVISED OCTOBER 2003 D 2-V to 6-V VCC Operation D Inputs Accept Voltages to 6 V D Max tpd of 7.5 ns at 5 V SN54AC244 . . . J OR W PACKAGE SN74AC244 . . . DB, DW, N, NS, OR PW PACKAGE


    Original
    PDF SN54AC244, SN74AC244 SCAS514E SN54AC244 AC244 SN54AC244 SN74AC244 SN74AC244DBR SN74AC244DW SN74AC244DWR SN74AC244N SN74AC244NSR SN74AC244PW SN74AC244PWR

    Untitled

    Abstract: No abstract text available
    Text: SN74AC244-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCAS723B – OCTOBER 2003 – REVISED APRIL 2006 FEATURES • • • • • • • • 1 DW OR NS PACKAGE (TOP VIEW) Controlled Baseline – One Assembly/Test Site, One Fabrication Site


    Original
    PDF SN74AC244-EP SCAS723B

    Untitled

    Abstract: No abstract text available
    Text: SN74AC244-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCAS723B – OCTOBER 2003 – REVISED APRIL 2006 FEATURES • • • • • • • • 1 DW OR NS PACKAGE (TOP VIEW) Controlled Baseline – One Assembly/Test Site, One Fabrication Site


    Original
    PDF SN74AC244-EP SCAS723B

    Untitled

    Abstract: No abstract text available
    Text: SN54AC244, SN74AC244 OCTAL BUFFERS/DRIVERS WITH 3ĆSTATE OUTPUTS SCAS514E − JUNE 1995 − REVISED OCTOBER 2003 D 2-V to 6-V VCC Operation D Inputs Accept Voltages to 6 V D Max tpd of 7.5 ns at 5 V SN54AC244 . . . J OR W PACKAGE SN74AC244 . . . DB, DW, N, NS, OR PW PACKAGE


    Original
    PDF SCAS514E SN54AC244, SN74AC244 AC244

    Untitled

    Abstract: No abstract text available
    Text: SN74AC244-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCAS723B – OCTOBER 2003 – REVISED APRIL 2006 FEATURES • • • • • • • • 1 DW OR NS PACKAGE (TOP VIEW) Controlled Baseline – One Assembly/Test Site, One Fabrication Site


    Original
    PDF SN74AC244-EP SCAS723B

    Untitled

    Abstract: No abstract text available
    Text: SN74AC244-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCAS723B – OCTOBER 2003 – REVISED APRIL 2006 FEATURES • • • • • • • • 1 DW OR NS PACKAGE (TOP VIEW) Controlled Baseline – One Assembly/Test Site, One Fabrication Site


    Original
    PDF SN74AC244-EP SCAS723B

    Untitled

    Abstract: No abstract text available
    Text: SN74AC244-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCAS723B – OCTOBER 2003 – REVISED APRIL 2006 FEATURES • • • • • • • • 1 DW OR NS PACKAGE (TOP VIEW) Controlled Baseline – One Assembly/Test Site, One Fabrication Site


    Original
    PDF SN74AC244-EP SCAS723B

    Untitled

    Abstract: No abstract text available
    Text: SN54AC244, SN74AC244 OCTAL BUFFERS/DRIVERS WITH 3ĆSTATE OUTPUTS SCAS514E − JUNE 1995 − REVISED OCTOBER 2003 D 2-V to 6-V VCC Operation D Inputs Accept Voltages to 6 V D Max tpd of 7.5 ns at 5 V SN54AC244 . . . J OR W PACKAGE SN74AC244 . . . DB, DW, N, NS, OR PW PACKAGE


    Original
    PDF SN54AC244, SN74AC244 SCAS514E SN54AC244 AC244

    SN54AC244

    Abstract: SN74AC244 SN74AC244-EP SN74AC244MDWREP SN74AC244MNSREP
    Text: SN74AC244-EP OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCAS723B – OCTOBER 2003 – REVISED APRIL 2006 FEATURES • • • • • • • • 1 DW OR NS PACKAGE (TOP VIEW) Controlled Baseline – One Assembly/Test Site, One Fabrication Site


    Original
    PDF SN74AC244-EP SCAS723B SN54AC244 SN74AC244 SN74AC244-EP SN74AC244MDWREP SN74AC244MNSREP