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    SN74ABT646 Search Results

    SN74ABT646 Result Highlights (5)

    Part ECAD Model Manufacturer Description Download Buy
    SN74ABT646PW
    Texas Instruments Octal Bus Transceivers And Registers With 3-State Outputs 24-TSSOP -40 to 85 Visit Texas Instruments Buy
    SN74ABT646ANSR
    Texas Instruments Octal Bus Transceivers And Registers With 3-State Outputs 24-SO -40 to 85 Visit Texas Instruments
    SN74ABT646DW
    Texas Instruments Octal Bus Transceivers And Registers With 3-State Outputs 24-SOIC -40 to 85 Visit Texas Instruments Buy
    SN74ABT646DBR
    Texas Instruments Octal Bus Transceivers And Registers With 3-State Outputs 24-SSOP -40 to 85 Visit Texas Instruments Buy
    SN74ABT646ADWG4
    Texas Instruments Octal Bus Transceivers And Registers With 3-State Outputs 24-SOIC -40 to 85 Visit Texas Instruments Buy

    SN74ABT646 Datasheets (140)

    Texas Instruments
    Part ECAD Model Manufacturer Description Datasheet Type PDF PDF Size Page count
    SN74ABT646
    Texas Instruments OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS Original PDF 215.75KB 9
    SN74ABT646
    Texas Instruments Octal Bus Transceivers And Registers With 3-State Outputs Original PDF 157.87KB 9
    SN74ABT646A
    Texas Instruments OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS Original PDF 221.25KB 10
    SN74ABT646A
    Texas Instruments Octal Bus Transceivers And Registers With 3-State Outputs Original PDF 157.17KB 10
    SN74ABT646ADB
    Texas Instruments OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUPUTS Original PDF 157.15KB 10
    SN74ABT646ADB
    Texas Instruments OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS Scan PDF 485.1KB 18
    SN74ABT646ADB
    Texas Instruments OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS Scan PDF 239.85KB 8
    SN74ABT646ADB
    Texas Instruments OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS Scan PDF 257.35KB 8
    SN74ABT646ADBE4
    Texas Instruments SN74ABT646 - IC ABT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, Bus Driver/Transceiver Original PDF 722.07KB 18
    SN74ABT646ADBLE
    Texas Instruments Octal Bus Transceivers And Registers With 3-State Outputs 24-SSOP -40 to 85 Original PDF 699.93KB 23
    SN74ABT646ADBLE
    Texas Instruments OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS Original PDF 157.15KB 10
    SN74ABT646ADBLE
    Texas Instruments SN74ABT646 - Octal Bus Transceivers And Registers With 3-State Outputs 24-SSOP -40 to 85 Original PDF 923.96KB 25
    SN74ABT646ADBR
    Texas Instruments SN74ABT646 - Octal Bus Transceivers And Registers With 3-State Outputs 24-SSOP -40 to 85 Original PDF 923.96KB 25
    SN74ABT646ADBR
    Texas Instruments Octal Bus Transceivers And Registers With 3-State Outputs 24-SSOP -40 to 85 Original PDF 699.93KB 23
    SN74ABT646ADBR
    Texas Instruments OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS Original PDF 157.15KB 10
    SN74ABT646ADBRE4
    Texas Instruments SN74ABT646 - Octal Bus Transceivers And Registers With 3-State Outputs 24-SSOP -40 to 85 Original PDF 923.96KB 25
    SN74ABT646ADBRE4
    Texas Instruments Octal Bus Transceivers And Registers With 3-State Outputs 24-SSOP -40 to 85 Original PDF 699.93KB 23
    SN74ABT646ADBRE4
    Texas Instruments Octal Bus Transceivers And Registers With 3-State Outputs Original PDF 490.85KB 21
    SN74ABT646ADBRG4
    Texas Instruments SN74ABT646 - Octal Bus Transceivers And Registers With 3-State Outputs 24-SSOP -40 to 85 Original PDF 923.96KB 25
    SN74ABT646ADBRG4
    Texas Instruments Octal Bus Transceivers And Registers With 3-State Outputs 24-SSOP -40 to 85 Original PDF 699.93KB 23
    ...
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    SN74ABT646 Price and Stock

    Texas Instruments

    Texas Instruments SN74ABT646ANSR

    IC: digital; bus transceiver,register; Ch: 8; CMOS,TTL; SMD; SOP24
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    TME SN74ABT646ANSR 1
    • 1 $1.39
    • 10 $1.30
    • 100 $1.26
    • 1000 $1.26
    • 10000 $1.26
    Get Quote
    Mouser Electronics SN74ABT646ANSR
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $1.50
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    Rochester Electronics SN74ABT646ANSR 2,000 1
    • 1 -
    • 10 -
    • 100 $1.29
    • 1000 $1.16
    • 10000 $1.09
    Buy Now

    Texas Instruments SN74ABT646DWR

    IC: digital; bus transceiver,register; Ch: 8; BiCMOS,TTL; SMD; SO24
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    TME SN74ABT646DWR 1
    • 1 $1.27
    • 10 $1.18
    • 100 $1.13
    • 1000 $1.13
    • 10000 $1.13
    Get Quote
    Mouser Electronics SN74ABT646DWR
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.97
    Get Quote
    Rochester Electronics SN74ABT646DWR 6,000 1
    • 1 -
    • 10 -
    • 100 $1.12
    • 1000 $0.93
    • 10000 $0.83
    Buy Now

    Texas Instruments SN74ABT646DBR

    IC: digital; bus transceiver,register; Ch: 8; BiCMOS,TTL; SMD; ABT
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    TME SN74ABT646DBR 1
    • 1 $1.79
    • 10 $1.67
    • 100 $1.61
    • 1000 $1.61
    • 10000 $1.61
    Get Quote
    Mouser Electronics SN74ABT646DBR
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.97
    Get Quote

    Texas Instruments SN74ABT646ADBR

    IC: digital; bus transceiver,register; Ch: 8; CMOS,TTL; SMD; SSOP24
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    TME SN74ABT646ADBR 1
    • 1 $1.79
    • 10 $1.67
    • 100 $1.61
    • 1000 $1.61
    • 10000 $1.61
    Get Quote
    Mouser Electronics SN74ABT646ADBR
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $1.10
    Get Quote
    Bristol Electronics SN74ABT646ADBR 1,264
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
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    Quest Components SN74ABT646ADBR 1,011
    • 1 $3.21
    • 10 $3.21
    • 100 $3.21
    • 1000 $1.77
    • 10000 $1.77
    Buy Now

    Texas Instruments SN74ABT646APW

    IC: digital; bus transceiver,register; Ch: 8; CMOS,TTL; SMD; tube
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    TME SN74ABT646APW 1
    • 1 $1.87
    • 10 $1.78
    • 100 $1.78
    • 1000 $1.78
    • 10000 $1.78
    Get Quote
    Mouser Electronics SN74ABT646APW 332
    • 1 $1.89
    • 10 $1.40
    • 100 $1.18
    • 1000 $1.03
    • 10000 $0.97
    Buy Now
    Rochester Electronics SN74ABT646APW 4,365 1
    • 1 -
    • 10 -
    • 100 $1.17
    • 1000 $0.97
    • 10000 $0.87
    Buy Now

    SN74ABT646 Datasheets Context Search

    Catalog Datasheet Type Document Tags PDF

    abt646a

    Abstract: A115-A SN54ABT646A SN74ABT646A SN74ABT646ANT
    Contextual Info: SN54ABT646A, SN74ABT646A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3ĆSTATE OUTPUTS SCBS069H − JULY 1991 − REVISED MAY 2004 D Typical VOLP Output Ground Bounce D D D Latch-Up Performance Exceeds 500 mA Per <1 V at VCC = 5 V, TA = 25°C High-Drive Outputs (−32-mA IOH, 64-mA IOL)


    Original
    SN54ABT646A, SN74ABT646A SCBS069H -32-mA 64-mA JESD-17 000-V A114-A) A115-A) SN54ABT646A abt646a A115-A SN54ABT646A SN74ABT646A SN74ABT646ANT PDF

    SN54ABT646

    Abstract: SN74ABT646
    Contextual Info: ÖRbl723 00^21^3 IbB • TII3 SN54ABT646, SN74ABT646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS _ SCBS068D - D3659. JULY 1991 - REVISED JULY 1993 SN54ABT646 . . . JT PACKAGE S N 74A B T646. . . OB, DW, OR NT PACKAGE TOP VIEW


    OCR Scan
    Rbl723 SN54ABT646, SN74ABT646 SCBS068D D3659. MIL-STD-883C, JESD-17 -32-mA 64-mA sn54abt646 SN54ABT646 PDF

    SN54ABT646A

    Abstract: SN74ABT646A
    Contextual Info: SN54ABT646A, SN74ABT646A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUPUTS SCBS069G – JULY 1991 – REVISED MAY 1997 D D D D SN54ABT646A . . . JT OR W PACKAGE SN74ABT646A . . . DB, DW, NT, OR PW PACKAGE TOP VIEW CLKAB SAB DIR A1 A2 A3 A4 A5 A6 A7


    Original
    SN54ABT646A, SN74ABT646A SCBS069G SN54ABT646A SN54ABT646A SN74ABT646A PDF

    Contextual Info: SN54ABT646A, SN74ABT646A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3ĆSTATE OUTPUTS SCBS069H − JULY 1991 − REVISED MAY 2004 D Typical VOLP Output Ground Bounce D D D Latch-Up Performance Exceeds 500 mA Per <1 V at VCC = 5 V, TA = 25°C High-Drive Outputs (−32-mA IOH, 64-mA IOL)


    Original
    SN54ABT646A, SN74ABT646A SCBS069H -32-mA 64-mA JESD-17 000-V A114-A) A115-A) SN54ABT646A PDF

    A115-A

    Abstract: SN54ABT646A SN74ABT646A SN74ABT646ANT
    Contextual Info: SN54ABT646A, SN74ABT646A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3ĆSTATE OUTPUTS SCBS069H − JULY 1991 − REVISED MAY 2004 D Typical VOLP Output Ground Bounce D D D Latch-Up Performance Exceeds 500 mA Per <1 V at VCC = 5 V, TA = 25°C High-Drive Outputs (−32-mA IOH, 64-mA IOL)


    Original
    SN54ABT646A, SN74ABT646A SCBS069H -32-mA 64-mA JESD-17 000-V A114-A) A115-A) SN54ABT646A A115-A SN54ABT646A SN74ABT646A SN74ABT646ANT PDF

    SAB 2064

    Abstract: A115-A SN54ABT646A SN74ABT646A SN74ABT646ANT
    Contextual Info: SN54ABT646A, SN74ABT646A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3ĆSTATE OUTPUTS SCBS069H − JULY 1991 − REVISED MAY 2004 D Typical VOLP Output Ground Bounce D D D Latch-Up Performance Exceeds 500 mA Per <1 V at VCC = 5 V, TA = 25°C High-Drive Outputs (−32-mA IOH, 64-mA IOL)


    Original
    SN54ABT646A, SN74ABT646A SCBS069H -32-mA 64-mA JESD-17 000-V A114-A) A115-A) SN54ABT646A SAB 2064 A115-A SN54ABT646A SN74ABT646A SN74ABT646ANT PDF

    A115-A

    Abstract: SN54ABT646A SN74ABT646A SN74ABT646ANT ABT646A
    Contextual Info: SN54ABT646A, SN74ABT646A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3ĆSTATE OUTPUTS SCBS069H − JULY 1991 − REVISED MAY 2004 D Typical VOLP Output Ground Bounce D D D Latch-Up Performance Exceeds 500 mA Per <1 V at VCC = 5 V, TA = 25°C High-Drive Outputs (−32-mA IOH, 64-mA IOL)


    Original
    SN54ABT646A, SN74ABT646A SCBS069H -32-mA 64-mA JESD-17 000-V A114-A) A115-A) SN54ABT646A A115-A SN54ABT646A SN74ABT646A SN74ABT646ANT ABT646A PDF

    Contextual Info: SN54ABT646, SN74ABT646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCBS068E – JULY 1991 – REVISED JULY 1994 • • • • • • State-of-the-Art EPIC-ΙΙB  BiCMOS Design Significantly Reduces Power Dissipation ESD Protection Exceeds 2000 V Per


    Original
    SN54ABT646, SN74ABT646 SCBS068E MIL-STD-883C, JESD-17 32-mA 64-mA SN54ABT646 SN74ABT646 PDF

    SN54ABT646A

    Abstract: SN74ABT646A
    Contextual Info: SN54ABT646A, SN74ABT646A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCBS069E – JULY 1991 – REVISED JULY 1994 • • • • • • State-of-the-Art EPIC-ΙΙB  BiCMOS Design Significantly Reduces Power Dissipation ESD Protection Exceeds 2000 V Per


    Original
    SN54ABT646A, SN74ABT646A SCBS069E MIL-STD-883C, JESD-17 32-mA 64-mA SN54ABT646A SN54ABT646A SN74ABT646A PDF

    Contextual Info: SN54ABT646, SN74ABT646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCBS068E – JULY 1991 – REVISED JULY 1994 • • • • • • State-of-the-Art EPIC-ΙΙB  BiCMOS Design Significantly Reduces Power Dissipation ESD Protection Exceeds 2000 V Per


    Original
    SN54ABT646, SN74ABT646 SCBS068E MIL-STD-883C, JESD-17 32-mA 64-mA SN54ABT646 SN74ABT646 PDF

    SN54ABT646

    Abstract: SN74ABT646 SN74ABT646DBLE SN74ABT646DBR
    Contextual Info: SN54ABT646, SN74ABT646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCBS068E – JULY 1991 – REVISED JULY 1994 • • • • • • State-of-the-Art EPIC-ΙΙB  BiCMOS Design Significantly Reduces Power Dissipation ESD Protection Exceeds 2000 V Per


    Original
    SN54ABT646, SN74ABT646 SCBS068E MIL-STD-883C, JESD-17 32-mA 64-mA SN54ABT646 SN54ABT646 SN74ABT646 SN74ABT646DBLE SN74ABT646DBR PDF

    Contextual Info: SN54ABT646, SN74ABT646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCBS068E – JULY 1991 – REVISED JULY 1994 • • • • • • State-of-the-Art EPIC-ΙΙB  BiCMOS Design Significantly Reduces Power Dissipation ESD Protection Exceeds 2000 V Per


    Original
    SN54ABT646, SN74ABT646 SCBS068E MIL-STD-883C, JESD-17 32-mA 64-mA SN54ABT646 SN74ABT646 scyd013 PDF

    Contextual Info: SN54ABT646A, SN74ABT646A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3ĆSTATE OUTPUTS SCBS069H − JULY 1991 − REVISED MAY 2004 D Typical VOLP Output Ground Bounce D D D Latch-Up Performance Exceeds 500 mA Per <1 V at VCC = 5 V, TA = 25°C High-Drive Outputs (−32-mA IOH, 64-mA IOL)


    Original
    SN54ABT646A, SN74ABT646A SCBS069H -32-mA 64-mA JESD-17 000-V A114-A) A115-A) SN54ABT646A PDF

    Contextual Info: SN54ABT646, SN74ABT646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCBS068E – JULY 1991 – REVISED JULY 1994 • • • • • • State-of-the-Art EPIC-ΙΙB  BiCMOS Design Significantly Reduces Power Dissipation ESD Protection Exceeds 2000 V Per


    Original
    SN54ABT646, SN74ABT646 SCBS068E MIL-STD-883C, JESD-17 32-mA 64-mA PDF

    Contextual Info: SN54ABT646A, SN74ABT646A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3ĆSTATE OUTPUTS SCBS069H − JULY 1991 − REVISED MAY 2004 D Latch-Up Performance Exceeds 500 mA Per D Typical VOLP Output Ground Bounce D D <1 V at VCC = 5 V, TA = 25°C High-Drive Outputs (−32-mA IOH, 64-mA IOL)


    Original
    SN54ABT646A, SN74ABT646A SCBS069H 32-mA 64-mA JESD-17 000-V A114-A) A115-A) SN54ABT646A PDF

    Contextual Info: SN54ABT646, SN74ABT646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCBS068E – JULY 1991 – REVISED JULY 1994 • • • • • • State-of-the-Art EPIC-ΙΙB  BiCMOS Design Significantly Reduces Power Dissipation ESD Protection Exceeds 2000 V Per


    Original
    SN54ABT646, SN74ABT646 SCBS068E MIL-STD-883C, JESD-17 32-mA 64-mA PDF

    SN54ABT646A

    Abstract: SN74ABT646A
    Contextual Info: SN54ABT646A, SN74ABT646A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS _ SCBS069E - JULY 1991 - REVISED JULY 1994 CLK A B [ 1 SAB [ 2 DIR [ 3 A ll 4 A2 [ 5 A3 [ 6 A4 [ 7 A5 [ 8 A6 [ 9 A 7 [ 10 c SN54ABT646A . . . JT PACKAGE


    OCR Scan
    SN54ABT646A, SN74ABT646A SCBS069E MIL-STD-883C, JESD-17 -32-mA 64-mA sn54abt646a sn74abt646a. 24AND SN54ABT646A PDF

    18 51 23 2 V0

    Abstract: SN54ABT646A SN74ABT646A
    Contextual Info: SN54ABT646A, SN74ABT646A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS S C B S 0 6 9 E -J U L Y 1991 -R E V IS E D JULY 1994 • State-of-the-Art EPIC-IIB BiCMOS Design SN54ABT646A. JT package Significantly Reduces Power Dissipation SN74ABT646A. .^ db .jjw^or nt package


    OCR Scan
    SN54ABT646A, SN74ABT646A SCBS069E-JULY MIL-STD-883C, JESD-17 -32-mA 64-mA sn54abt646a sn74abt646a SN54ABT646A 18 51 23 2 V0 PDF

    Contextual Info: SN54ABT646, SN74ABT646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCBS068E – JULY 1991 – REVISED JULY 1994 • • • • • • State-of-the-Art EPIC-ΙΙB  BiCMOS Design Significantly Reduces Power Dissipation ESD Protection Exceeds 2000 V Per


    Original
    SN54ABT646, SN74ABT646 SCBS068E MIL-STD-883C, JESD-17 32-mA 64-mA SN54ABT646 SN74ABT646 PDF

    Contextual Info: SN54ABT646, SN74ABT646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCBS068E – JULY 1991 – REVISED JULY 1994 • • • • • • State-of-the-Art EPIC-ΙΙB  BiCMOS Design Significantly Reduces Power Dissipation ESD Protection Exceeds 2000 V Per


    Original
    SN54ABT646, SN74ABT646 SCBS068E MIL-STD-883C, JESD-17 32-mA 64-mA SN54ABT646 SN74ABT646 PDF

    Contextual Info: SN54ABT646A, SN74ABT646A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3ĆSTATE OUTPUTS SCBS069H − JULY 1991 − REVISED MAY 2004 D Typical VOLP Output Ground Bounce D D D Latch-Up Performance Exceeds 500 mA Per <1 V at VCC = 5 V, TA = 25°C High-Drive Outputs (−32-mA IOH, 64-mA IOL)


    Original
    SN54ABT646A, SN74ABT646A SCBS069H -32-mA 64-mA JESD-17 000-V A114-A) A115-A) SN54ABT646A PDF

    Contextual Info: SN54ABT646, SN74ABT646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCBS068E – JULY 1991 – REVISED JULY 1994 • • • • • • State-of-the-Art EPIC-ΙΙB  BiCMOS Design Significantly Reduces Power Dissipation ESD Protection Exceeds 2000 V Per


    Original
    SN54ABT646, SN74ABT646 SCBS068E MIL-STD-883C, JESD-17 32-mA 64-mA SN54ABT646 SN74ABT646 MTSS001C PDF

    SN54ABT646A

    Abstract: SN74ABT646A
    Contextual Info: SN54ABT646A, SN74ABT646A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUPUTS SCBS069G – JULY 1991 – REVISED MAY 1997 D D D D SN54ABT646A . . . JT OR W PACKAGE SN74ABT646A . . . DB, DW, NT, OR PW PACKAGE TOP VIEW CLKAB SAB DIR A1 A2 A3 A4 A5 A6 A7


    Original
    SN54ABT646A, SN74ABT646A SCBS069G SN54ABT646A SN54ABT646A SN74ABT646A PDF

    IC 40106 pin diagram

    Abstract: cmos ALL 4000- 4001- 4002 TO 4099 series IN MOTOROLA signetics hand book SDFD001B SN74368A cd4536 74HCT 4013 CD4000 SERIES BOOK SDLS051 40106 internal circuit diagram
    Contextual Info: SN54ABT646A, SN74ABT646A OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUPUTS SCBS069G – JULY 1991 – REVISED MAY 1997 D D D D SN54ABT646A . . . JT OR W PACKAGE SN74ABT646A . . . DB, DW, NT, OR PW PACKAGE TOP VIEW CLKAB SAB DIR A1 A2 A3 A4 A5 A6 A7


    Original
    SN54ABT646A, SN74ABT646A SCBS069G MIL-STD-883, JESD-17 32-mA 64-mA SN54ABT646A pdf\recode\sn74abt646a IC 40106 pin diagram cmos ALL 4000- 4001- 4002 TO 4099 series IN MOTOROLA signetics hand book SDFD001B SN74368A cd4536 74HCT 4013 CD4000 SERIES BOOK SDLS051 40106 internal circuit diagram PDF