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    FREE CHARGING CIRCUIT DIAGRAM OF LAPTOP MOTHERBOARD Search Results

    FREE CHARGING CIRCUIT DIAGRAM OF LAPTOP MOTHERBOARD Result Highlights (5)

    Part ECAD Model Manufacturer Description Download Buy
    TLP2701 Toshiba Electronic Devices & Storage Corporation Photocoupler (photo-IC output), 5000 Vrms, 4pin SO6L Visit Toshiba Electronic Devices & Storage Corporation
    74HC4053FT Toshiba Electronic Devices & Storage Corporation CMOS Logic IC, SPDT(1:2)/Analog Multiplexer, TSSOP16B, -40 to 125 degC Visit Toshiba Electronic Devices & Storage Corporation
    74HC4051FT Toshiba Electronic Devices & Storage Corporation CMOS Logic IC, SP8T(1:8)/Analog Multiplexer, TSSOP16B, -40 to 125 degC Visit Toshiba Electronic Devices & Storage Corporation
    TCKE800NA Toshiba Electronic Devices & Storage Corporation eFuse IC (electronic Fuse), 4.4 to 18 V, 5.0 A, Auto-retry, WSON10B Visit Toshiba Electronic Devices & Storage Corporation
    TCKE800NL Toshiba Electronic Devices & Storage Corporation eFuse IC (electronic Fuse), 4.4 to 18 V, 5.0 A, Latch, WSON10B Visit Toshiba Electronic Devices & Storage Corporation

    FREE CHARGING CIRCUIT DIAGRAM OF LAPTOP MOTHERBOARD Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    hcl laptop MOTHERBOARD CIRCUIT diagram

    Abstract: charging ic laptop motherboard laptop Lithium-ion battery diagram schematic VRM Section of laptop Motherboard LTC1069-X advantages of battery charging circuit using scr over other battery chargers LT1170 boost converter 12v dc input 19.5 v SD card connector LTC1409 LTC1430
    Text: LINEAR TECHNOLOGY DECEMBER 1996 IN THIS ISSUE . . . COVER ARTICLE LTC 1409/LTC1415 High Speed, Low Power 12-Bit ADCs . 1 Kevin R. Hoskins Issue Highlights . 2 LTC in the News . 2 DESIGN FEATURES LTC1553 Synchronous Regulator


    Original     		PDF 1409/LTC1415 12-Bit LTC1553 1575/LT1577 LTC1479 H2-562-2285 1-800-4-LINEAR hcl laptop MOTHERBOARD CIRCUIT diagram charging ic laptop motherboard laptop Lithium-ion battery diagram schematic VRM Section of laptop Motherboard LTC1069-X advantages of battery charging circuit using scr over other battery chargers LT1170 boost converter 12v dc input 19.5 v SD card connector LTC1409 LTC1430

    ANTENA yagi

    Abstract: solar charger schematic 24V 12 volts solar panel battery charger schematic laptop motherboard repair Chip level electronic laptop charger circuit solar battery charger 12 volt circuit schematic XFC6200EX solar panel of 10 watt ISO-5167-1 car laptop charger schematic
    Text: 2101511–001 AB TOTALFLOW XFC6200/6201EX Flow Computer User’s Manual Intellectual Property & Copyright Notice 2005 by ABB Inc., Totalflow SRU (“Owner”), Bartlesville, Oklahoma 74006, U.S.A. All rights reserved. Any and all derivatives of, including translations thereof, shall remain the sole property of the


    Original     		PDF XFC6200/6201EX ANTENA yagi solar charger schematic 24V 12 volts solar panel battery charger schematic laptop motherboard repair Chip level electronic laptop charger circuit solar battery charger 12 volt circuit schematic XFC6200EX solar panel of 10 watt ISO-5167-1 car laptop charger schematic

    hcl laptop MOTHERBOARD CIRCUIT diagram

    Abstract: charging ic laptop motherboard VRM Section of laptop Motherboard intel core i3 laptop MOTHERBOARD CIRCUIT diagram Laptop AC adapter 19V laptop Lithium-ion battery diagram schematic IBM t 42 laptop ac adapter schematics diagram HCL Notebook motherboard schematic laptop motherboard schematic ALL LAPTOP MOTHERBOARD CIRCUIT DIAGRAM
    Text: LINEAR TECHNOLOGY DECEMBER 1996 IN THIS ISSUE . . . COVER ARTICLE LTC 1409/LTC1415 High Speed, Low Power 12-Bit ADCs . 1 Kevin R. Hoskins Issue Highlights . 2 LTC in the News . 2 DESIGN FEATURES LTC1553 Synchronous Regulator


    Original     		PDF 1409/LTC1415 12-Bit LTC1553 1575/LT1577 LTC1479 H2-562-2285 1-800-4-LINEAR hcl laptop MOTHERBOARD CIRCUIT diagram charging ic laptop motherboard VRM Section of laptop Motherboard intel core i3 laptop MOTHERBOARD CIRCUIT diagram Laptop AC adapter 19V laptop Lithium-ion battery diagram schematic IBM t 42 laptop ac adapter schematics diagram HCL Notebook motherboard schematic laptop motherboard schematic ALL LAPTOP MOTHERBOARD CIRCUIT DIAGRAM

    schematic diagram inverter lcd monitor dell

    Abstract: hp laptop charging CIRCUIT diagram dell laptop battery pinout DELL laptop inverter board schematic hp laptop battery pinout testing motherboards using multi meter hp laptop ac adapter schematics diagram circuit diagram of smps dell "full hd" mobile phone camera pinout schematic diagram electrical BIKES USING DC MOTOR
    Text: 2. MDmesh II for lighting 3. STV200N55F3 / STV250N55F3 High-current power MOSFETs 4. 2STCxxx / 2STAxxx High-end audio power bipolars 5. STP03D200 2 kV Darlington 6. 2200 V ESBTs 7. RF power design kits 8. USBULC6-2M6 Protection for USB 2.0 9. EMIF06-AUD01F2


    Original     		PDF STV200N55F3 STV250N55F3 STP03D200 EMIF06-AUD01F2 EMIF10-LCD03F3 CPL-WB-00C2 STCC08 ETP01-1621 STCF06 ST715 schematic diagram inverter lcd monitor dell hp laptop charging CIRCUIT diagram dell laptop battery pinout DELL laptop inverter board schematic hp laptop battery pinout testing motherboards using multi meter hp laptop ac adapter schematics diagram circuit diagram of smps dell "full hd" mobile phone camera pinout schematic diagram electrical BIKES USING DC MOTOR

    toyota prius

    Abstract: 12v car battery charger wiring diagram charging ic laptop motherboard toyota inverter golf cart motor circuits Yuasa EH6 free circuit diagram of laptop motherboard do LTC6802-2 LTC6802 lead acid battery SoC measurement circuitry
    Text: LINEAR TECHNOLOGY MARCH 2009 IN THIS ISSUE… COVER ARTICLE Battery Stack Monitor Extends Life of Li-Ion Batteries in Hybrid Electric Vehicles.1 Michael Kultgen and Jon Munson Linear in the News….2 DESIGN FEATURES


    Original     		PDF 60mm2 200ns LTC6802 toyota prius 12v car battery charger wiring diagram charging ic laptop motherboard toyota inverter golf cart motor circuits Yuasa EH6 free circuit diagram of laptop motherboard do LTC6802-2 lead acid battery SoC measurement circuitry

    Laptop AC adapter 19V 90w

    Abstract: KB926 Sony US 18650 fire alarm mini project report DTN-C103F3H-SYS115A TMB-1615 foxconn LS 36 manual foxconn ls 36 motherboard manual MB-8800 lp141wx3
    Text: Service Manual JHT01 Chapter 1 System Description Specification Contents Chapter 1 System Description Specification 1. SCOPE . 1-2 1.1 1.2 1.3 1.4 1.5 1.6 1.7


    Original     		PDF JHT01 250GB. JHT01 Laptop AC adapter 19V 90w KB926 Sony US 18650 fire alarm mini project report DTN-C103F3H-SYS115A TMB-1615 foxconn LS 36 manual foxconn ls 36 motherboard manual MB-8800 lp141wx3

    kb926

    Abstract: control lamp brightness Laptop AC adapter 19V 90w foxconn ls 36 motherboard manual compal service manual ENE KB926 fire alarm mini project report lp141wx3 LP141WX3-TLN2 TMB-1615
    Text: Service Manual JHT00 Chapter 1 System Description Specification Contents Chapter 1 System Description Specification 1. SCOPE . 1-2 1.1 1.2 1.3 1.4 1.5 1.6 1.7


    Original     		PDF JHT00 250GB. JHT00 kb926 control lamp brightness Laptop AC adapter 19V 90w foxconn ls 36 motherboard manual compal service manual ENE KB926 fire alarm mini project report lp141wx3 LP141WX3-TLN2 TMB-1615

    an8411

    Abstract: flyback transformer for Lt1308 an8499 12v battery charger lm317 automatic notebook Universal LCD inverter 12v-20v 6v battery charger lm317 automatic sot-23 fet smd code 12w LTC1373 universal laptop schematic power supply 19v circuit diagram schematic diagram 48V solar charge controller
    Text: Application Note 84 April 2000 Linear Technology Magazine Circuit Collection, Volume IV Power Products Richard Markell, Editor INTRODUCTION Application Note 84 is the fourth in a series that excerpts useful circuits from Linear Technology magazine to preserve them for posterity. This application note highlights


    Original     		PDF LTC1623, LT1339 AN84-159 AN84-160 an84f an8411 flyback transformer for Lt1308 an8499 12v battery charger lm317 automatic notebook Universal LCD inverter 12v-20v 6v battery charger lm317 automatic sot-23 fet smd code 12w LTC1373 universal laptop schematic power supply 19v circuit diagram schematic diagram 48V solar charge controller

    kb926

    Abstract: Sony US 18650 Laptop AC adapter 19V 90w TMB-1615 JHL90 compal service manual LP154WX4 DTN-C103F3H-SYS115A foxconn ls 36 motherboard manual MB-8800
    Text: Service Manual JHL90 Chapter 1 System Description Specification Contents Chapter 1 System Description Specification 1. SCOPE . 1-2 1.1 1.2 1.3 1.4 1.5 1.6 1.7


    Original     		PDF JHL90 250GB. JHL90 kb926 Sony US 18650 Laptop AC adapter 19V 90w TMB-1615 compal service manual LP154WX4 DTN-C103F3H-SYS115A foxconn ls 36 motherboard manual MB-8800

    LG color tv Circuit Diagram schematics

    Abstract: hp laptop MOTHERBOARD pcb CIRCUIT diagram la 4440 amplifier circuit diagram 300 watt hp laptop ac adapter schematics diagram schematic led screen billboard METAL DETECTOR PROGRAM PIC16F84 megamax-4g pic 220v light dimmer hydraulic lift project microcontroller based billboard display system
    Text: Section 1: Introduction Introduction . 1-1 Third Party Support by Product . 1-3 Emulators . 1-3


    Original     		PDF DS00104D-page DS00104D LG color tv Circuit Diagram schematics hp laptop MOTHERBOARD pcb CIRCUIT diagram la 4440 amplifier circuit diagram 300 watt hp laptop ac adapter schematics diagram schematic led screen billboard METAL DETECTOR PROGRAM PIC16F84 megamax-4g pic 220v light dimmer hydraulic lift project microcontroller based billboard display system

    hybrid car charger inverter schematic diagram

    Abstract: toyota prius hp 530 motherboard circuit and solution charge CAPACITOR ELITE 100uf 450V hp laptop charging CIRCUIT diagram car laptop charger schematic hp schematic diagram of laptop motherboard charging circuit l 7803 3V Positive Voltage Regulator APD bias 250v Yuasa EH6
    Text: LINEAR TECHNOLOGY MARCH 2009 IN THIS ISSUE… COVER ARTICLE Battery Stack Monitor Extends Life of Li-Ion Batteries in Hybrid Electric Vehicles .1 Michael Kultgen and Jon Munson Linear in the News… .2 DESIGN FEATURES


    Original     		PDF 1-800-4-LINEAR hybrid car charger inverter schematic diagram toyota prius hp 530 motherboard circuit and solution charge CAPACITOR ELITE 100uf 450V hp laptop charging CIRCUIT diagram car laptop charger schematic hp schematic diagram of laptop motherboard charging circuit l 7803 3V Positive Voltage Regulator APD bias 250v Yuasa EH6

    AC digital voltmeter using 7107

    Abstract: BCM 7425 laptop chip level repairing BCM 7428 BCM 7418 LT 7247 jtag bcm 7401 bottle filling circuit diagram gigabyte mother board block diagram and troubleshoot Pressure Transducer 7881 Z Series
    Text: 2103937-001– rev. AA NGC8201 Chromatograph User’s Manual Intellectual Property & Copyright Notice 2009 by ABB Inc., Totalflow “Owner” , Bartlesville, Oklahoma 74006, U.S.A. All rights reserved. Any and all derivatives of, including translations thereof, shall remain the sole property of the Owner,


    Original     		PDF NGC8201 AC digital voltmeter using 7107 BCM 7425 laptop chip level repairing BCM 7428 BCM 7418 LT 7247 jtag bcm 7401 bottle filling circuit diagram gigabyte mother board block diagram and troubleshoot Pressure Transducer 7881 Z Series

    circuit diagram wireless spy camera

    Abstract: JVC RX 320 V 22 pin multi connector sony ccd v100 mp3 player circuit diagram by using msp430 TMS320DSC21 DC motor speed control using IC 555 and ir sensor abstract on wireless spy camera DC SERVO MOTOR CONTROL VHDL 12V mono amplifier 400 watts jvc hdd motor
    Text: T H E W O R L D L E A D E R I N D S P A N D A N A L O G VOLUME 6 TM Burr-Brown Products Designer’s Guide N E W T E C H N I C A L I N F O R M A T I O N O N T I ’ S D S P, A N A L O G A N D L O G I C D E V I C E S New floating-point DSP Back cover triples


    Original     		PDF 14-bit circuit diagram wireless spy camera JVC RX 320 V 22 pin multi connector sony ccd v100 mp3 player circuit diagram by using msp430 TMS320DSC21 DC motor speed control using IC 555 and ir sensor abstract on wireless spy camera DC SERVO MOTOR CONTROL VHDL 12V mono amplifier 400 watts jvc hdd motor

    8051 MICROCONTROLLER BASED SOLAR CHARGER

    Abstract: LPG GAS SENSOR hp laptop MOTHERBOARD pcb CIRCUIT diagram c code for ir sensor sm 0038 with controller 8051 SOLAR CHARGER CONTROLLER USED 8051 hp laptop charging CIRCUIT diagram 8051 interfacing lcd keypad and touch screen mp3 player circuit diagram by using msp430 firewire to usb adapter schematic diagram schematic diagram of laptop motherboard
    Text: R E A L W O R L D S I G N A L P TM R O C E S S I N G P ORTABLE C OMPUTING AND I NSTRUMENTATION S OLUTIONS G UIDE Amplifiers, Data Converters, DSPs, Interface, Logic, Microcontrollers, Power Management 2Q 2003 INSIDE Signal Chain 3 Design Examples 4 Recommended Devices


    Original     		PDF

    msp430 microcontroller based water level controller circuit

    Abstract: DSP BASED ONLINE UPS design UPS design bass treble using lm324 hp laptop MOTHERBOARD pcb CIRCUIT diagram sony DVD player with usb port circuit diagram TMS320C5409 DELTA CONVERSION ONLINE UPS design TMS320LF2407 mini projects project report of 3 phase speed control motor circuit vector method
    Text: T H E W O R L D L E A D E R D S P I N A N D inside A N A L O G VOLUME 4 TM N E W T E C H N I C A L I N F O R M A T I O N O N T I ’ S D S P, A N A L O G A N D L O G I C D E V I C E S DSP Evaluate Code Composer Studio 1.2 Digital control systems Take your digital


    Original     		PDF TMS32028x TMS320C28x TMS320C5000TM TMS320, SSFN035 msp430 microcontroller based water level controller circuit DSP BASED ONLINE UPS design UPS design bass treble using lm324 hp laptop MOTHERBOARD pcb CIRCUIT diagram sony DVD player with usb port circuit diagram TMS320C5409 DELTA CONVERSION ONLINE UPS design TMS320LF2407 mini projects project report of 3 phase speed control motor circuit vector method

    AC digital voltmeter using 7107

    Abstract: BC548 TRANSISTOR REPLACEMENT switched capacitor filter handbook mf10 motorola MAX638 specification PURE SINE WAVE inverter using PIC MOSFET PWM Tran MAX1771 equivalent spice model L-band down converter for satellite tuner wideband toshiba laptop schematic diagram AUTOMATIC ROOM LIGHT CONTROLLER ppt schematic LG TV lcd backlight led inverter led
    Text: Welcome We hope that you will find this CD-ROM a helpful tool for selecting the best Maxim IC for your design. To the left, please find a menu of the documents contained on this CD-ROM. Click on each item for a more detailed list. All of the indexes, tables, and trees on this CD-ROM contain


    Original     		PDF MAX038 Generator900 AC digital voltmeter using 7107 BC548 TRANSISTOR REPLACEMENT switched capacitor filter handbook mf10 motorola MAX638 specification PURE SINE WAVE inverter using PIC MOSFET PWM Tran MAX1771 equivalent spice model L-band down converter for satellite tuner wideband toshiba laptop schematic diagram AUTOMATIC ROOM LIGHT CONTROLLER ppt schematic LG TV lcd backlight led inverter led

    TL494 car charger schematic diagram

    Abstract: samsung galaxy s2 controller for PWM fan tl494 1A current to 0-5v voltage converter using LM317 SMD LD33 capacitor huang 2200uF 35V uc3843 flyback supply opto-coupler SMD MOSFET DRIVE 4606 schematic lcd inverter samsung sine wave inverter tl494 circuit diagram
    Text: Micrel Semiconductor 1997 Databook 1 _ General Information 2 _ Computer Peripherals 3 _ Low-Dropout Linear Voltage Regulators 4 _ Switch-Mode Voltage Regulators 5 _ MOSFET Drivers 6 _


    Original     		PDF accurat49565 TL494 car charger schematic diagram samsung galaxy s2 controller for PWM fan tl494 1A current to 0-5v voltage converter using LM317 SMD LD33 capacitor huang 2200uF 35V uc3843 flyback supply opto-coupler SMD MOSFET DRIVE 4606 schematic lcd inverter samsung sine wave inverter tl494 circuit diagram

    Renesas IGBT

    Abstract: Flashlamp schematic Flyback Transformers SANYO TV flyback transformer high-voltages 7805 5V REGULATOR IC THREE TERMINAL led driver 12v 100w FTA160709 LT6103 Led driver 30v 50W schematic top h-bridge igbt pwm
    Text: LINEAR TECHNOLOGY DECEMBER 2006 IN THIS ISSUE… Cover Article Reliable, Efficient LED Backlighting for Large LCD Displays .1 Hua Walker Bai Linear Technology in the News….2 Design Features Precise Current Sense Amplifiers


    Original     		PDF SE-164 Renesas IGBT Flashlamp schematic Flyback Transformers SANYO TV flyback transformer high-voltages 7805 5V REGULATOR IC THREE TERMINAL led driver 12v 100w FTA160709 LT6103 Led driver 30v 50W schematic top h-bridge igbt pwm

    spw -079 transformer

    Abstract: samsung galaxy s2 numeric digital 600 plus ups ckt diagram samsung galaxy s2 display Zener Diode ph 4148 ph 4148 zener diode CD4046 spice model DIODE SMD L4W lm2576 spice SN75492
    Text: Micrel Semiconductor 1997 Databook 1 _ General Information 2 _ Computer Peripherals 3 _ Low-Dropout Linear Voltage Regulators 4 _ Switch-Mode Voltage Regulators 5 _ MOSFET Drivers 6 _


    Original     		PDF 1-06A spw -079 transformer samsung galaxy s2 numeric digital 600 plus ups ckt diagram samsung galaxy s2 display Zener Diode ph 4148 ph 4148 zener diode CD4046 spice model DIODE SMD L4W lm2576 spice SN75492

    intel 845 MOTHERBOARD pcb CIRCUIT diagram

    Abstract: 200D6 SMD DIP-8 marking code E5 SMD ic sot23-5 4256 bwp TRANSISTOR SMD 6CW TL494 car charger schematic diagram SMD 6cw LM385 1.25V zener 6cw smd code marking mc7812a
    Text: DL128/D Rev. 7, Mar-2002 Analog Integrated Circuits Power Management, Signal Conditioning and ASSP Devices Literature Fulfillment: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada


    Original     		PDF DL128/D Mar-2002 r14525 DL128 intel 845 MOTHERBOARD pcb CIRCUIT diagram 200D6 SMD DIP-8 marking code E5 SMD ic sot23-5 4256 bwp TRANSISTOR SMD 6CW TL494 car charger schematic diagram SMD 6cw LM385 1.25V zener 6cw smd code marking mc7812a

    IRF9024

    Abstract: AC digital voltmeter using 7107 apc back-up ups cs 650 circuit diagram APC 5kv UPS CIRCUIT DIAGRAM apc back-up ups cs 500 circuit diagram cctv balun circuit diagram MAX1771 equivalent spice model Schaffner NSG 509 ISMB30AT3 quadrature sinewave oscillator lm324
    Text: Volume Eleven NEWS BRIEFS Maxim reports record revenues for the third quarter 1993 2 IN-DEPTH ARTICLE New amplifiers simplify wideband techniques 3 DESIGN SHOWCASE 3rd-order highpass filter has synthetic inductor 10 Comparator and charge pump converts 3V to 5V


    Original     		PDF 400ksps 12-bit MX390: AD390 MAX152) MAX186/188) MX390) 130MHz IRF9024 AC digital voltmeter using 7107 apc back-up ups cs 650 circuit diagram APC 5kv UPS CIRCUIT DIAGRAM apc back-up ups cs 500 circuit diagram cctv balun circuit diagram MAX1771 equivalent spice model Schaffner NSG 509 ISMB30AT3 quadrature sinewave oscillator lm324

    marking code E5 SMD ic sot23-5

    Abstract: Satellite DISEQC SWITCH 4x1 acer laptop motherboard circuit diagram acer laptop battery pinout nec tokin oe 128 schematic LG TV lcd backlight inverter ACER laptop schematic diagram HP COMPAQ MOTHERBOARD CIRCUIT diagram schematic acer lcd backlight inverter APC 5kv UPS CIRCUIT DIAGRAM
    Text: We hope that you will find this CD-ROM a helpful tool for selecting the best Maxim IC for your design. To the left, please find a menu of the documents contained on this CD-ROM. Click on each item for a more detailed list. All of the indexes, tables, and trees on this CD-ROM contain links to product data sheets. After you have viewed a


    Original     		PDF MAX038 MAX038EVKIT 2001elec marking code E5 SMD ic sot23-5 Satellite DISEQC SWITCH 4x1 acer laptop motherboard circuit diagram acer laptop battery pinout nec tokin oe 128 schematic LG TV lcd backlight inverter ACER laptop schematic diagram HP COMPAQ MOTHERBOARD CIRCUIT diagram schematic acer lcd backlight inverter APC 5kv UPS CIRCUIT DIAGRAM

    toshiba laptop schematic diagram

    Abstract: acer motherboard circuit diagram MAX1270 C source code MAX11871 mp 9141 es dc-dc lm324 pwm speed motor 220v DC MOTOR SPEED CONTROLLER schematic ACER laptop schematic diagram L-band down converter for satellite tuner wideband acer laptop MOTHERBOARD Chip Level MANUAL acer laptop motherboard circuit diagram
    Text: Welcome to the Maxim Full-Line Data Catalog. We hope you find this CD-ROM a helpful tool for selecting the best Maxim IC for your design. This CD-ROM contains: The Maxim Full-Line Data Catalog The menu to the left of this page lists the available documents. Use the small


    Original     		PDF

    DS1868

    Abstract: LM 4440 AUDIO AMPLIFIER CIRCUIT DS1230y-200 battery date codes circuit diagram laptop motherboard Scans-049 texas instrument catalog 74ls DS1666-50 st c031 s1040 diode
    Text: S ystem E x t e n s i o n Data Book CPU Supervisors Digital Potentiometers Silicon Timed Circuits Thermal Products DALLAS SEMICONDUCTOR Copyright 1994 Dallas Semiconductor Corporation, Dallas, Texas All Rights Reserved. Circuit diagrams are included to illustrate typical semiconductor applications. Complete information sufficient for


    OCR Scan     		PDF 28-PIN DS9003 DS1868 LM 4440 AUDIO AMPLIFIER CIRCUIT DS1230y-200 battery date codes circuit diagram laptop motherboard Scans-049 texas instrument catalog 74ls DS1666-50 st c031 s1040 diode