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

    HC245 Search Results

    HC245 Result Highlights (5)

    Part ECAD Model Manufacturer Description Download Buy
    CD54HC245F Texas Instruments High Speed CMOS Logic Non-Inverting Octal-Bus Transceiver with 3-State Outputs 20-CDIP -55 to 125 Visit Texas Instruments
    SNJ54AHC245FK Texas Instruments Octal Bus Transceivers With 3-State Outputs 20-LCCC -55 to 125 Visit Texas Instruments Buy
    SN74AHC245DBR Texas Instruments Octal Bus Transceivers With 3-State Outputs 20-SSOP -40 to 125 Visit Texas Instruments Buy
    SN74AHC245DWRE4 Texas Instruments Octal Bus Transceivers With 3-State Outputs 20-SOIC -40 to 125 Visit Texas Instruments Buy
    SN74AHC245QPWRQ1 Texas Instruments Automotive Catalog Octal Bus Transceivers With 3-State Outputs 20-TSSOP -40 to 125 Visit Texas Instruments Buy
    SF Impression Pixel

    HC245 Price and Stock

    Nexperia 74AHC245PW,118

    IC TXRX NON-INVERT 5.5V 20TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey 74AHC245PW,118 Reel 55,000 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.153
    		Buy Now
    TTI 74AHC245PW,118 Reel 7,500 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.113
    		Buy Now
    TME 74AHC245PW,118 1
    • 1 $0.331
    • 10 $0.269
    • 100 $0.185
    • 1000 $0.158
    • 10000 $0.158
    		Get Quote
    Avnet Asia 74AHC245PW,118 8 Weeks 7,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.15961
    		Buy Now
    Avnet Silica 74AHC245PW,118 2,500 10 Weeks 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    EBV Elektronik 74AHC245PW,118 5,000 10 Weeks 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    New Advantage Corporation 74AHC245PW,118 15,000 1
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.1657
    		Buy Now

    Texas Instruments SN74HC245APWR

    IC TXRX NON-INVERT 6V 20TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SN74HC245APWR Cut Tape 3,189 1
    • 1 $0.65
    • 10 $0.459
    • 100 $0.3595
    • 1000 $0.30741
    • 10000 $0.30741
    		Buy Now
    SN74HC245APWR Digi-Reel 3,189 1
    • 1 $0.65
    • 10 $0.459
    • 100 $0.3595
    • 1000 $0.30741
    • 10000 $0.30741
    		Buy Now

    onsemi MM74HC245AMTCX

    IC TXRX NON-INVERT 6V 20TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MM74HC245AMTCX Digi-Reel 2,360 1
    • 1 $1.29
    • 10 $0.786
    • 100 $0.5065
    • 1000 $0.35121
    • 10000 $0.35121
    		Buy Now
    MM74HC245AMTCX Cut Tape 2,360 1
    • 1 $1.29
    • 10 $0.786
    • 100 $0.5065
    • 1000 $0.35121
    • 10000 $0.35121
    		Buy Now
    Avnet Americas MM74HC245AMTCX Reel 9 Weeks 5,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.1679
    		Buy Now
    Rochester Electronics MM74HC245AMTCX 4,037 1
    • 1 $0.2879
    • 10 $0.2879
    • 100 $0.2706
    • 1000 $0.2447
    • 10000 $0.2447
    		Buy Now
    Avnet Silica MM74HC245AMTCX 10 Weeks 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    EBV Elektronik MM74HC245AMTCX 11 Weeks 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    Flip Electronics MM74HC245AMTCX 15,930
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    New Advantage Corporation MM74HC245AMTCX 5,000 1
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.224
    		Buy Now

    Texas Instruments SN74AHC245QPWRG4Q1

    IC TXRX NON-INVERT 5.5V 20TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SN74AHC245QPWRG4Q1 Reel 2,000 2,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.28875
    		Buy Now
    SN74AHC245QPWRG4Q1 Cut Tape 2,000 1
    • 1 $0.72
    • 10 $0.512
    • 100 $0.4022
    • 1000 $0.34486
    • 10000 $0.34486
    		Buy Now
    SN74AHC245QPWRG4Q1 Digi-Reel 2,000 1
    • 1 $0.72
    • 10 $0.512
    • 100 $0.4022
    • 1000 $0.34486
    • 10000 $0.34486
    		Buy Now
    Rochester Electronics SN74AHC245QPWRG4Q1 8,006 1
    • 1 $0.2694
    • 10 $0.2694
    • 100 $0.2532
    • 1000 $0.229
    • 10000 $0.229
    		Buy Now
    Vyrian SN74AHC245QPWRG4Q1 5,668
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote

    Texas Instruments CD74HC245M

    IC TXRX NON-INVERT 6V 20SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey CD74HC245M Tube 1,661 1
    • 1 $1.25
    • 10 $0.91
    • 100 $0.7287
    • 1000 $0.63376
    • 10000 $0.63376
    		Buy Now
    Rochester Electronics CD74HC245M 21,099 1
    • 1 $0.6028
    • 10 $0.6028
    • 100 $0.5666
    • 1000 $0.5124
    • 10000 $0.5124
    		Buy Now
    TME CD74HC245M 352 3
    • 1 -
    • 10 $1.05
    • 100 $0.8
    • 1000 $0.8
    • 10000 $0.8
    		Buy Now
    Find more HC245 price and stock on Findchips.com

    HC245 Datasheets (1)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    HC245 System Logic Semiconductor Octal 3-State Noninverting Bus Transceiver Original PDF

    HC245 Datasheets Context Search

    Catalog Datasheet Type Document Tags PDF

    HC245 harris

    Abstract: CD54 CD54HC245 CD54HCT245 CD74HC245 CD74HCT245 HC245
    Text: [ /Title CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5 /Subject (High Speed HC245, HC245, CD54HCT245, CD74HCT245 Data sheet acquired from Harris Semiconductor SCHS119A November 1997 - Revised May 2003 High-Speed CMOS Logic Octal-Bus Transceiver,


    Original     		HC245 HCT24 CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 SCHS119A HC245 harris CD54 CD54HC245 CD54HCT245 CD74HC245 CD74HCT245 HC245 PDF

    cd74hct245e

    Abstract: CD74HC245E
    Text: [ /Title CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5 /Subject (High Speed HC245, HC245, CD54HCT245, CD74HCT245 Data sheet acquired from Harris Semiconductor SCHS119A November 1997 - Revised May 2003 High-Speed CMOS Logic Octal-Bus Transceiver,


    Original     		CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 SCHS119A CD74HCT245 cd74hct245e CD74HC245E PDF

    74HC245

    Abstract: No abstract text available
    Text: • 5bE D 7^237 0040072 35b fî. T - f Z - Z Z - v T HC245/640/643 HC245/640/643 S G S -T H O M S O N £ ISGTH iy OCTAL BUS TRANSCEIVER 3-STATE HC245 NON INVERTING, HC640 INVERTING, HC643 INVERTING/NON INVERTING PRELIMINARY DATA S G S-THOMSON HIGH SPEED


    OCR Scan     		M54HC245/640/643 M74HC245/640/643 HC245 HC640 HC643 M54HCXXX M74HCXXX 74HC245 PDF

    HC245

    Abstract: 74hc245 ic 74hc245 ic 74hc245 n 74hc245 20 pin DIAGRAM 74hc245 PIN DIAGRAM 74HC245 equivalent 74HC245 application 74HCB IC M54
    Text: HS-CMOS" INTEGRATED CIRCUITS A ö C, i 4 - i C a * ( * • - '- i M54/HC245 M54/74HCB4Q M54/74HC&43 -r 4 ? PRELIMINARY DATA ii W n a r OCTAL BUS TRANSCEIVER HC245 3-STATE, NON-INVERTING HC640 3-STATE, INVERTING HC643 3-STATE, INVERTING AND NON-INVERTING


    OCR Scan     		M54/74HC245 M54/74HCB40 M54/74HCS43 HC245 HC640 HC643 M54/74HC245, M54HC640 M54HC643 74hc245 ic 74hc245 ic 74hc245 n 74hc245 20 pin DIAGRAM 74hc245 PIN DIAGRAM 74HC245 equivalent 74HC245 application 74HCB IC M54 PDF

    HC245 harris

    Abstract: CD54 CD54HC245 CD54HCT245 CD74HC245 CD74HCT245 HC245 cd74hct245e
    Text: [ /Title CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5 /Subject (High Speed HC245, HC245, CD54HCT245, CD74HCT245 Data sheet acquired from Harris Semiconductor SCHS119A November 1997 - Revised May 2003 High-Speed CMOS Logic Octal-Bus Transceiver,


    Original     		HC245 HCT24 CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 SCHS119A HC245 harris CD54 CD54HC245 CD54HCT245 CD74HC245 CD74HCT245 HC245 cd74hct245e PDF

    Untitled

    Abstract: No abstract text available
    Text: [ /Title CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5 /Subject (High Speed HC245, HC245, CD54HCT245, CD74HCT245 Data sheet acquired from Harris Semiconductor SCHS119A November 1997 - Revised May 2003 High-Speed CMOS Logic Octal-Bus Transceiver,


    Original     		CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 SCHS119A CD74HCT245 PDF

    ic 74hc245

    Abstract: 74hc245 PIN DIAGRAM 74HC245 HC245 h 54HC643 74HC245M HC245
    Text: / T T SCS-THOMSON * 7 # u R{flDW[l[L[lOT liiflD i HC245/640/643 HC245/640/643 OCTAL BUS TRANSCEIVER 3-STATE HC245 NON INVERTING, HC640 INVERTING, HC643 INVERTING/NON INVERTING PRELIMINARY DATA • HIGH SPEED tpo = 11 ns (TYP.) at V c c = 5V ■ LOW POW ER DISSIPATION


    OCR Scan     		M54HC245/640/643 M74HC245/640/643 HC245 HC640 HC643 54/74LS245/640/643 54/74H 54HC643 HC640/643 ic 74hc245 74hc245 PIN DIAGRAM 74HC245 HC245 h 74HC245M PDF

    HC245

    Abstract: ic 74hc245 74hc245 20 pin DIAGRAM 74HC245 HC640 HC643 M54HCXXXF1R M74HCXXXM1R 74hc245 PIN DIAGRAM
    Text: M54/HC245/640/643 M54/HC245/640/643 OCTAL BUS TRANSCEIVER 3-STATE : HC245 NON INVERTING HC640 INVERTING, HC643 INVERTING/NON INVERTING . . . . . . . . HIGH SPEED tPD = 10 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION o ICC = 4 µA (MAX.) at TA = 25 C HIGH NOISE IMMUNITY


    Original     		M54/74HC245/640/643 HC245 HC640 HC643 54/74LS245/640/643 M54HCXXXF1R M74HCXXXM1R M74HCXXXB1R M74HCXXXC1R ic 74hc245 74hc245 20 pin DIAGRAM 74HC245 M54HCXXXF1R M74HCXXXM1R 74hc245 PIN DIAGRAM PDF

    cd74hct245e

    Abstract: HCT245
    Text: [ /Title CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5 /Subject (High Speed HC245, HC245, CD54HCT245, CD74HCT245 Data sheet acquired from Harris Semiconductor SCHS119A November 1997 - Revised May 2003 High-Speed CMOS Logic Octal-Bus Transceiver,


    Original     		CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 SCHS119A CD74HCT245 cd74hct245e HCT245 PDF

    HC245

    Abstract: ic 74hc245 74hc245 74HC245 Datasheet HC640 HC643 M54HCXXXF1R M74HCXXXM1R
    Text: M54/HC245/640/643 M54/HC245/640/643 OCTAL BUS TRANSCEIVER 3-STATE : HC245 NON INVERTING HC640 INVERTING, HC643 INVERTING/NON INVERTING . . . . . . . . HIGH SPEED tPD = 10 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION o ICC = 4 µA (MAX.) at TA = 25 C HIGH NOISE IMMUNITY


    Original     		M54/74HC245/640/643 HC245 HC640 HC643 54/74LS245/640/643 M54HCXXXF1R M74HCXXXM1R M74HCXXXB1R M74HCXXXC1R ic 74hc245 74hc245 74HC245 Datasheet M54HCXXXF1R M74HCXXXM1R PDF

    Untitled

    Abstract: No abstract text available
    Text: [ /Title CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5 /Subject (High Speed HC245, HC245, CD54HCT245, CD74HCT245 Data sheet acquired from Harris Semiconductor SCHS119A November 1997 - Revised May 2003 High-Speed CMOS Logic Octal-Bus Transceiver,


    Original     		CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 SCHS119A CD74HCT245 PDF

    74hc245 PIN DIAGRAM

    Abstract: hc245 ic 74hc245 M74HCXXXM1R M74HCXXXC1R 74HC245 ic 74ls245
    Text: ¿ 7 / SCS-THOMSON M54/HC245/640/643 M54/HC245/640/643 iUD OCTAL BUS TRANSCEIVER 3-STATE : HC245 NON INVERTING HC640 INVERTING, HC643 INVERTING/NON INVERTING • HIGHSPEED tpD = 10 ns (TYP.) al Vcc = 5V ■ LOW POWER DISSIPATION Ice = 4 nA (MAX.) at Ta = 25 °C


    OCR Scan     		M54/74HC245/640/643 HC245 HC640 HC643 74HCXXXM 74HCXXXC1R 54/74LS245/640/643 HC640/643 74hc245 PIN DIAGRAM ic 74hc245 M74HCXXXM1R M74HCXXXC1R 74HC245 ic 74ls245 PDF

    HC245 harris

    Abstract: cd74hct245e CD54 CD54HC245 CD54HCT245 CD74HC245 CD74HCT245 HC245
    Text: [ /Title CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5 /Subject (High Speed HC245, HC245, CD54HCT245, CD74HCT245 Data sheet acquired from Harris Semiconductor SCHS119A November 1997 - Revised May 2003 High-Speed CMOS Logic Octal-Bus Transceiver,


    Original     		HC245 HCT24 CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 SCHS119A HC245 harris cd74hct245e CD54 CD54HC245 CD54HCT245 CD74HC245 CD74HCT245 HC245 PDF

    Untitled

    Abstract: No abstract text available
    Text: [ /Title CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5 /Subject (High Speed HC245, HC245, CD54HCT245, CD74HCT245 Data sheet acquired from Harris Semiconductor SCHS119A November 1997 - Revised May 2003 High-Speed CMOS Logic Octal-Bus Transceiver,


    Original     		CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 SCHS119A CD74HCT245 PDF

    74HC245

    Abstract: No abstract text available
    Text: 1 SGS-THOMSON HC245/640/643 HC245/640/643 m OCTAL BUS TRANSCEIVER 3-STATE HC245 NON INVERTING, HC640 INVERTING, HC643 INVERTING/NON INVERTING PRELIMINARY DATA HIGH SPEED tPD = 11 ns (TYP.) at VCc = 5V LOW POWER DISSIPATION Ice = 4 iiA (MAX.) at TA = 2 5 °C


    OCR Scan     		M54HC245/640/643 M74HC245/640/643 HC245 HC640 HC643 M54HCXXX M74HCXXX 74HC245 PDF

    74HC245

    Abstract: hc245 ic 74hc245 ic 74hc245 n 74HC245 application 74LS245 non inverting bus transceiver HC640 HC643 M54HC640 M54HC643
    Text: fi HC245/640/643 HC245/640/643 SGS-THOMSON LICTlsMOES OCTAL BUS TRANSCEIVER 3-STATE HC245 NON INVERTING, HC640 INVERTING, HC643 INVERTING/NON INVERTING PRELIMINARY DATA HIGH SPEED tPD = 11 ns (TYP.) at VCc = 5V LOW POWER DISSIPATION ICC = 4 (MAX.) at TA = 2 5 °C


    OCR Scan     		M54HC245/640/643 M74HC245/640/643 HC245 HC640 HC643 54/74LS245/640/643 M54HCXXX M74HCXXX 74HC245 ic 74hc245 ic 74hc245 n 74HC245 application 74LS245 non inverting bus transceiver M54HC640 M54HC643 PDF

    HC245* harris

    Abstract: HC245 harris CD54 CD54HC245 CD54HCT245 CD74HC245 CD74HCT245 HC245 cd74hct245e
    Text: [ /Title CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5 /Subject (High Speed HC245, HC245, CD54HCT245, CD74HCT245 Data sheet acquired from Harris Semiconductor SCHS119A November 1997 - Revised May 2003 High-Speed CMOS Logic Octal-Bus Transceiver,


    Original     		HC245 HCT24 CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 SCHS119A HC245* harris HC245 harris CD54 CD54HC245 CD54HCT245 CD74HC245 CD74HCT245 HC245 cd74hct245e PDF

    74vhc

    Abstract: TSSOP14 TSSOP20 pcb 4000B AC245 HC245 LCX16245 LVQ245 LVX245 VCX16245
    Text: AC245: 7ns HC245: 7ns HC245: 12ns LVQ245: LVX245: LCX16245: VCX16245: 10ns 8ns 4.5ns 2.5ns VCX16245: 3.2ns VCX16245: 5.7ns HC/HCT FAST/AS/ALS AC/ACT BICMOS ST’s CMOS Logic Roadmap VHC/VHCT 3-VOLTS Design-In VCC 12V 5.0V 4000B LS S/T TL OTHERS Obsolescence


    Original     		AC245: VHC245: HC245: LVQ245: LVX245: LCX16245: VCX16245: 4000B 74vhc TSSOP14 TSSOP20 pcb 4000B AC245 HC245 LCX16245 LVQ245 LVX245 VCX16245 PDF

    HC245 harris

    Abstract: CD74HCT245M CD54 CD54HC245 CD54HCT245 CD74HC245 CD74HCT245 HC245 cd74hct245e
    Text: [ /Title CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5 /Subject (High Speed HC245, HC245, CD54HCT245, CD74HCT245 Data sheet acquired from Harris Semiconductor SCHS119A November 1997 - Revised May 2003 High-Speed CMOS Logic Octal-Bus Transceiver,


    Original     		HC245 HCT24 CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 SCHS119A HC245 harris CD74HCT245M CD54 CD54HC245 CD54HCT245 CD74HC245 CD74HCT245 HC245 cd74hct245e PDF

    HC245 harris

    Abstract: HC245* harris
    Text: [ /Title CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5 /Subject (High Speed Data sheet acquired from Harris Semiconductor SCHS119 November 1997 HC245, CD54HCT245, HC245, CD74HCT245 High Speed CMOS Logic Octal-Bus Transceiver, Three-State, Non-Inverting


    Original     		SCHS119 CD54HC245, CD54HCT245, CD74HC245, CD74HCT245 -55oC 125oC 8408501RA CD54HC245F CD54HC245F3A HC245 harris HC245* harris PDF

    CD54HCT245F3A

    Abstract: HCT64
    Text: [ /Title CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5 /Subject (High Speed HC245, HC245, CD54HCT245, CD74HCT245 Data sheet acquired from Harris Semiconductor SCHS119A November 1997 - Revised May 2003 High-Speed CMOS Logic Octal-Bus Transceiver,


    Original     		CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 SCHS119A CD74HCT245 CD54HCT245F3A HCT64 PDF

    HC245 harris

    Abstract: CD54 CD54HC245 CD54HCT245 CD74HC245 CD74HCT245 HC245 cd74hct245e
    Text: [ /Title CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5 /Subject (High Speed HC245, HC245, CD54HCT245, CD74HCT245 Data sheet acquired from Harris Semiconductor SCHS119A November 1997 - Revised May 2003 High-Speed CMOS Logic Octal-Bus Transceiver,


    Original     		HC245 HCT24 CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 SCHS119A HC245 harris CD54 CD54HC245 CD54HCT245 CD74HC245 CD74HCT245 HC245 cd74hct245e PDF

    Untitled

    Abstract: No abstract text available
    Text: [ /Title CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5 /Subject (High Speed HC245, HC245, CD54HCT245, CD74HCT245 Data sheet acquired from Harris Semiconductor SCHS119A November 1997 - Revised May 2003 High-Speed CMOS Logic Octal-Bus Transceiver,


    Original     		CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 SCHS119A CD74HCT245 PDF

    HC245 harris

    Abstract: CD54 CD54HC245 CD54HCT245 CD74HC245 CD74HCT245 HC245 cd74hct245e CD74HC245E
    Text: [ /Title CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5 /Subject (High Speed HC245, HC245, CD54HCT245, CD74HCT245 Data sheet acquired from Harris Semiconductor SCHS119A November 1997 - Revised May 2003 High-Speed CMOS Logic Octal-Bus Transceiver,


    Original     		HC245 HCT24 CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 SCHS119A HC245 harris CD54 CD54HC245 CD54HCT245 CD74HC245 CD74HCT245 HC245 cd74hct245e CD74HC245E PDF