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

    642R Search Results

    642R Result Highlights (5)

    Part ECAD Model Manufacturer Description Download Buy
    HPA022642RTJR Texas Instruments 138mW DirectPath Headphone Amplifier with GPIO control 20-QFN -40 to 85 Visit Texas Instruments Buy
    CC2642R1TWFRTCRQ1 Texas Instruments Automotive qualified SimpleLink Bluetooth Low Energy wireless MCU Visit Texas Instruments Buy
    TS3DV642RUATQ1 Texas Instruments 6 Gbps 12-Channel differential 1-to-2 and 2-to-1 mux 42-WQFN -40 to 105 Visit Texas Instruments Buy
    CC2642R1FRGZR Texas Instruments SimpleLink™ Bluetooth® Low Energy wireless MCU 48-VQFN -40 to 85 Visit Texas Instruments Buy
    CC2642R1FTWRGZRQ1 Texas Instruments Automotive qualified SimpleLink™ Bluetooth® Low Energy wireless MCU 48-VQFN -40 to 105 Visit Texas Instruments
    SF Impression Pixel

    642R Price and Stock

    Harwin M55-6022642R

    CONN RCPT 26POS 0.05 GOLD SMD
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey M55-6022642R Digi-Reel 3,956 1
    • 1 $2.68
    • 10 $2.184
    • 100 $2.68
    • 1000 $2.68
    • 10000 $2.68
    		Buy Now
    M55-6022642R Reel 3,800 200
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.38875
    • 10000 $1.38875
    		Buy Now
    Avnet Abacus M55-6022642R 13 Weeks 400
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now

    Harwin M55-7012642R

    CONN HEADER SMD 26POS 1.27MM
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey M55-7012642R Cut Tape 873 1
    • 1 $1.7
    • 10 $1.383
    • 100 $1.7
    • 1000 $1.7
    • 10000 $1.7
    		Buy Now
    M55-7012642R Digi-Reel 873 1
    • 1 $1.7
    • 10 $1.383
    • 100 $1.7
    • 1000 $1.7
    • 10000 $1.7
    		Buy Now
    M55-7012642R Reel 450 450
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.92758
    • 10000 $0.8425
    		Buy Now
    Newark M55-7012642R Cut Tape 451 1
    • 1 $1.88
    • 10 $1.64
    • 100 $1.23
    • 1000 $1.1
    • 10000 $1.1
    		Buy Now
    TTI M55-7012642R Reel 900
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.01
    • 10000 $0.85
    		Buy Now
    Avnet Abacus M55-7012642R 450 13 Weeks 900
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now

    Harwin M55-6002642R

    CONN RCPT 26POS 0.05 GOLD SMD
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey M55-6002642R Cut Tape 660 1
    • 1 $2.81
    • 10 $2.29
    • 100 $2.81
    • 1000 $2.81
    • 10000 $2.81
    		Buy Now
    M55-6002642R Digi-Reel 660 1
    • 1 $2.81
    • 10 $2.29
    • 100 $2.81
    • 1000 $2.81
    • 10000 $2.81
    		Buy Now
    M55-6002642R Reel 550 550
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.60444
    • 10000 $1.60444
    		Buy Now
    Newark M55-6002642R Cut Tape 240 1
    • 1 $2.8
    • 10 $2.54
    • 100 $2.18
    • 1000 $1.72
    • 10000 $1.56
    		Buy Now
    TTI M55-6002642R Reel 550
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.92
    • 10000 $1.42
    		Buy Now
    TME M55-6002642R 4 1
    • 1 $2.56
    • 10 $2.56
    • 100 $1.98
    • 1000 $1.58
    • 10000 $1.35
    		Buy Now
    Powell Electronics M55-6002642R 17 1
    • 1 $6.71
    • 10 $4.7
    • 100 $4.47
    • 1000 $3.29
    • 10000 $3.29
    		Buy Now
    Avnet Abacus M55-6002642R 13 Weeks 550
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now

    Harwin M58-3800642R

    CONN MALE 0.8MM SMD VERT 60POS
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey M58-3800642R Cut Tape 556 1
    • 1 $2.83
    • 10 $2.307
    • 100 $1.8808
    • 1000 $1.73404
    • 10000 $1.73404
    		Buy Now
    M58-3800642R Digi-Reel 556 1
    • 1 $2.83
    • 10 $2.307
    • 100 $1.8808
    • 1000 $1.73404
    • 10000 $1.73404
    		Buy Now
    Newark M58-3800642R Cut Tape 800 1
    • 1 $1.18
    • 10 $1.18
    • 100 $1.18
    • 1000 $1.18
    • 10000 $1.18
    		Buy Now
    TTI M58-3800642R Reel 800
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.57
    • 10000 $1.43
    		Buy Now
    Avnet Abacus M58-3800642R 9 Weeks 800
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now

    Texas Instruments TS3DV642RUATQ1

    IC MUX/DEMUX 12 X 1:2 42WQFN
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey TS3DV642RUATQ1 Digi-Reel 291 1
    • 1 $2.87
    • 10 $2.148
    • 100 $1.7665
    • 1000 $1.7665
    • 10000 $1.7665
    		Buy Now
    TS3DV642RUATQ1 Cut Tape 291 1
    • 1 $2.87
    • 10 $2.148
    • 100 $1.7665
    • 1000 $1.7665
    • 10000 $1.7665
    		Buy Now
    TS3DV642RUATQ1 Reel 250 250
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.67128
    • 10000 $1.47809
    		Buy Now
    Ameya Holding Limited TS3DV642RUATQ1 11,741
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    Find more 642R price and stock on Findchips.com

    642R Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    ZyXEL

    Abstract: ZyXEL Communications zyxel dslam microfilter 642R
    Text: Prestige 642 Series Multi-Mode ADSL Bridge/Router Models Prestige 642R Prestige 642M Prestige 642R-I Prestige 642M-I Multi-Mode Router Multi-Mode Bridge ADSL over ISDN Router ADSL over ISDN Bridge A DSL Asymmetric Digital Subscriber Line is the hottest technology for Broadband Internet Access as well as providing voice services


    Original     		PDF 642R-I 642M-I ZyXEL ZyXEL Communications zyxel dslam microfilter 642R

    E56412

    Abstract: LPN-RK-200SP LPN-RK-100SP LPN-RK-125SP LPN-RK-150SP
    Text: Bussmann Low-Peak® LPN-RK Dual-Element Time-Delay Fuses Class RK1 – 250 Volts AC/DC 70-600A NEW Dimensional Data A DES IGN B Dimensions inches Ampere Ratings 70-100 110-200 225-400 450-600 Catalog Symbol: LPN-RK_SP Ampere Rating: 70 to 600 Amperes Voltage Ratings:


    Original     		PDF 0-600A E56412 LPN-RK-70SP LPN-RK-150SP LPN-RK-350SP LPN-RK-80SP LPN-RK-175SP LPN-RK-400SP LPN-RK-90SP LPN-RK-200SP E56412 LPN-RK-200SP LPN-RK-100SP LPN-RK-125SP LPN-RK-150SP

    kcc cl-150

    Abstract: 3PRA 20 3PRA 60 5a 20SP 012 KRPC-3000 buss fusetron fusetron dual element FUSE FNM-6 IR 200 A mcm 750 100a 15sp 012 J60400-1CR
    Text: General Data — Selection Chart Bussmann Buss Fuse Selection Chart 600 Volts or Less Circuit Load Ampere Fuse Rating Type Symbol Voltage Rating (a-c) Class Interrupting Rating (KA) Remarks All-purpose fuses. Unequaled for combined short-circuit and overload protection.


    Original     		PDF 01-6000A) kcc cl-150 3PRA 20 3PRA 60 5a 20SP 012 KRPC-3000 buss fusetron fusetron dual element FUSE FNM-6 IR 200 A mcm 750 100a 15sp 012 J60400-1CR

    K 2642

    Abstract: NO.2621-R bussmann class J fuses 642R J-13 J-16 J-21 J-26 NO2621R J-42
    Text: Bussmann Class H, J, K, & R REDUCERS Fuse Reducers • Fuse reducers install in fuse clips to permit the installation of smaller size fuses than those for which the clips are designed • Reducers fit into most panels or switches including the dead-front type.


    Original     		PDF E12853) SB05037 K 2642 NO.2621-R bussmann class J fuses 642R J-13 J-16 J-21 J-26 NO2621R J-42

    3PRA 20

    Abstract: BUSSMANN KTK-15 JJS-45 KTU-80 3PRA 60 FRS-R-40 20SP 012 LPJ-20SP FRN-R-10 LPJ-400SP
    Text: Niederspannungs-Sicherungseinsätze für industrielle Anwendungen Allgemeine Angaben - Maße Zoll Klasse J Klasse T Klasse RK5 und RK1 ® Low-Peak und Limitron Sicherungen LPJ und JKS (600V) T-Tron Sicherungen JJN (300V) JJS (600V) Fusetron®-, Low-Peak®- und


    Original     		PDF FNQ-15 FNQ-20 FNQ-25 FNQ-30 3PRA 20 BUSSMANN KTK-15 JJS-45 KTU-80 3PRA 60 FRS-R-40 20SP 012 LPJ-20SP FRN-R-10 LPJ-400SP

    tcon mini-lvds

    Abstract: mini-lvds source driver tcon with lvds input lvds 20 pin lcd panel TFP74x3 TFP7433 TPF7443 mini-LVDS and TFT-LCD Timing Controller 2045G Tcon minilvds
    Text: TFP7423, TFP7433, TFP7443, TFP7453 TFT LCD PANEL TIMING CONTROLLER WITH mini-LVDS AND FlatLink SLDS140A – APRIL 2001 – REVISED JULY 2002 D Support for 6-Bit as Well as 8-Bit Video D D D D D D D Support for 2-Level and 3-Level Gate Inputs, With On-Chip Dithering


    Original     		PDF TFP7423, TFP7433, TFP7443, TFP7453 SLDS140A tcon mini-lvds mini-lvds source driver tcon with lvds input lvds 20 pin lcd panel TFP74x3 TFP7433 TPF7443 mini-LVDS and TFT-LCD Timing Controller 2045G Tcon minilvds

    Untitled

    Abstract: No abstract text available
    Text: FUSETRON 250V Class RK5 FRN-R — 250Vac/125Vdc, 70-600A, Dual Element, Time-Delay Fuses Dimensions - in 8.63” ± 0.094 5.88” 1.06” 2.38” ± 0.020 225 to 400A 70 to 100A 10.38” ± 0.094 7.13” 1.56” 450 to 600A 110 to 200A Description: Advanced protection, energy efficient Class RK5


    Original     		PDF 250Vac/125Vdc, 0-600A, 250Vac 125Vdc 10-200A) 250Vdc 25-600A) 0-600A 200kA E4273

    FRS-R-80

    Abstract: FRSR-400 8002 1018 FRS-R-300 FRSR-80 FRSR-175 frs-r-400 FRS-R-175 FRSR600 FRS-R-200
    Text: Bussmann Fusetron® FRS-R Dual-Element, Time-Delay Fuses Class RK5 –– 600 Volt 65-600A Dimensional Data A B Dimensions inches Ampere Ratings 65-100 110-200 225-400 450-600 Catalog Symbol: FRS-R Dual-Element, Time-Delay – 10 seconds (minimum) at 500%


    Original     		PDF 5-600A 000AIC E4273 FRS-R-65 FRS-R-125 FRS-R-300 FRS-R-70 FRS-R-135 FRS-R-325 FRS-R-75 FRS-R-80 FRSR-400 8002 1018 FRS-R-300 FRSR-80 FRSR-175 frs-r-400 FRS-R-175 FRSR600 FRS-R-200

    NTS-R-60

    Abstract: NTN-R-100 NTS-R-30 NTS-R-400 2664-R 2661 NTN-R-60
    Text: 200A 100A 100A 60A 60A 30A 30A †600A †600A †400A †400A †200A †200A 100A 100A 60A Equipment Clip Size J-64 J-62 J-42 J-41 J-21 J-26 J-16 J-13 J-63 Catalog No. Pair Reducer No. 3.55 1.80 2.75 4.90 1.36 2.55 1.85 1.73 0.38 *Carton Weight (Lbs.)


    Original     		PDF NTN-R-30 NTN-R-60 NTN-R-100 NTN-R-200 NTN-R-400 NTS-R-30 NTS-R-60 NTS-R-100 NTS-R-200 NTS-R-400 2664-R 2661

    pse jet THERMAL FUSE

    Abstract: thyristor t600 160A Fuse bs88 curve SFC-FUSE-CAB 12ABCNA semiconductors cross index HKP-HH HRC fuse gG 35A 500V SOY-B HRC Fuse HOLDER 80A
    Text: Product Catalog Circuit Protection Products Circuit Protection Index Index by Domestic Catalog Numbers Listed Numeric-Alpha Catalog Number Page 5.5VKNHA Amp R . . . . . . . . . . . . 102 E60C . . . . . . . . . . . . . . . . . . . . . . . . 72 LCL . . . . . . . . . . . . . . . . . . . . . . . . . 14


    Original     		PDF 12ABCNA E60SF 12CAV E70SF 12SDLSJ pse jet THERMAL FUSE thyristor t600 160A Fuse bs88 curve SFC-FUSE-CAB semiconductors cross index HKP-HH HRC fuse gG 35A 500V SOY-B HRC Fuse HOLDER 80A

    E56412

    Abstract: LPN-RK-100SP LPN-RK-125SP LPN-RK-150SP LPN-RK-200SP
    Text: Low-Peak Dual-Element, Time-Delay Fuses Indicating & Non-indicating Class RK1 – 250 Volt 70-600 Amps LPN-RK_SPI & LPN-RK_SP Series Dimensions - in A B Amp Ratings 70-100 110-200 225-400 450-600 Catalog Symbol: LPN-RK_SP non-indicating version LPN-RK_SPI (indicating version)


    Original     		PDF 250Vac/dc 0-600A) 300kA 100kA E56412 200kA LPN-RK-70SP LPN-RK-150SP LPN-RK-350SP LPN-RK-80SP E56412 LPN-RK-100SP LPN-RK-125SP LPN-RK-150SP LPN-RK-200SP

    ECNR-100

    Abstract: ECNR200 ECNR250 ECNR35 ECNR125 ECNR80 ECNR500 ECNR400 E162363 ecnr-600
    Text: ECNR Class RK5 250Vac, 70 to 600A Dual-Element, Time-Delay Fuses Dimensions inches 5.88” 1.06” 70 to 100A 7.13” 1.56” 110 to 200A 8.63” ± 0.094 2.38” ± 0.020 225 to 400A 10.38” ± 0.094 2.88” ± 0.020 450 to 600A Catalog Symbol: ECNR Dual-Element, Time-Delay – 10 seconds (minimum) at 500%


    Original     		PDF 250Vac, 250Vac 125Vdc 10-200A) 250Vdc 25-600A) 200kA E162363 ECNR70 ECNR110 ECNR-100 ECNR200 ECNR250 ECNR35 ECNR125 ECNR80 ECNR500 ECNR400 ecnr-600

    r60200-3cr

    Abstract: FRS-R75 BU-SB08062 FRSR-175 FRS-R-100 FRS-R-110 FRS-R-125 FRS-R-70 FRS-R-75 FRS-R-80
    Text: Fusetron FRS-R Dual-Element, Time-Delay Fuses Class RK5 –– 600 Volt 65-600A Dimensions - in A B Amp Ratings 65-100 110-200 225-400 450-600 Catalog Symbol: FRS-R Current-Limiting, dual-element, time-delay – 10 seconds minimum at 500% rated current


    Original     		PDF 5-600A 600Vac 200kA 300Vdc E4273 FRS-R-65 FRS-R-125 FRS-R-350 FRS-R-70 r60200-3cr FRS-R75 BU-SB08062 FRSR-175 FRS-R-100 FRS-R-110 FRS-R-125 FRS-R-70 FRS-R-75 FRS-R-80

    fusetron

    Abstract: FRSR-400 frs 21 dc FRS-R-100 FRS-R-110 FRS-R-125 FRS-R-70 FRS-R-75 FRS-R-80 FRS-R-90
    Text: Bussmann Fusetron® FRS-R Dual-Element, Time-Delay Fuses Class RK5 –– 600 Volt 70-600A old design Dimensional Data 7.88" (±.062) 11.63" (±.094) 1.34" (±.008) 70A to 100A 2.59" (±.008) 225A to 400A 9.63" (±.062) 13.38" (±.094) 1.84" (±.008) 3.13" (±.008)


    Original     		PDF 0-600A 600Vac 000AIC 250Vdc) E4273 FRS-R-70 SB02295 fusetron FRSR-400 frs 21 dc FRS-R-100 FRS-R-110 FRS-R-125 FRS-R-70 FRS-R-75 FRS-R-80 FRS-R-90

    170M8554

    Abstract: bussmann Fuse 450 amps 250 volts max zs FM09 PS Jet 20A 300v fuse
    Text: Circuit Protection Products for the Electrical Industry New Products for All Markets For product data sheets, visit www.cooper.bussmann.com/products/datasheet.asp Circuit Protection Products for the Electrical Industry Table of Contents RED indicates NEW information


    Original     		PDF 0210-55M 170M8554 bussmann Fuse 450 amps 250 volts max zs FM09 PS Jet 20A 300v fuse

    fusetron

    Abstract: FRSR-400 fusetron dual element Time-Delay fuse FRSR300 FRS-R-175 FRSR125 FRS-R-125 FRSR.250 FRS-R-200 FRSR225
    Text: Bussmann Fusetron® FRS-R Dual-Element, Time-Delay Fuses Class RK5 –– 600 Volt 65-600A Dimensional Data A B Dimensions inches Ampere Ratings 65-100 110-200 225-400 450-600 Catalog Symbol: FRS-R Dual-Element, Time-Delay – 10 seconds (minimum) at 500%


    Original     		PDF 5-600A 600Vac 000AIC 300Vdc) E4273 FRS-R-65 FRS-R-135 FRS-R-325 FRS-R-70 FRS-R-150 fusetron FRSR-400 fusetron dual element Time-Delay fuse FRSR300 FRS-R-175 FRSR125 FRS-R-125 FRSR.250 FRS-R-200 FRSR225

    ana 658 solar charge

    Abstract: RD2004 for 4120 40A 14VDC relay pico fuse color code varistor 20sp Lucent SLC 96 cabinet MDM cooper bussmann semiconductor fuse catalogue MDQ 100a 600v bridge rectifier GBA 616
    Text: Bussmann electrical full line catalog Leadership in Circuit Protection Introducing Bussmann by Eaton The protection you rely on. For more, visit Bussmann.com Leadership in Circuit Protection. The only company that can provide a complete circuit protection solution for all applications.


    Original     		PDF

    f640

    Abstract: IR 643 643R
    Text: 33 HARRIS IR F640/641/642/643 IR F640R/641R/642R /643R N-Channel Power MOSFETs Avalanche Energy Rated* August 1991 Features Package T O -2 2 0 A B TOP VIEW • 16A and 18A, 150V - 200V • rDS on = 0 .1 8 fi and 0 .2 2 0 • Single Pulse Avalanche Energy Rated*


    OCR Scan     		PDF F640/641/642/643 F640R/641R/642R /643R IRF640, IRF641, IRF642, IRF640R, IRF641R, IRF642R IRF643R f640 IR 643 643R

    Untitled

    Abstract: No abstract text available
    Text: • 4302271 QDS4033 T04 ■ 2 H A R R IS HAS IR F640/641/642/643 IR F640R /641R /642R /643R N-Channel Power MOSFETs Avalanche Energy Rated* August 1991 Features Package T0-22QAB TOP VIEW • 16A and 18A, 150V - 200V • rDS(on = 0 .1 8 0 and 0 .2 2 0 • Single Pulse Avalanche Energy Rated*


    OCR Scan     		PDF QDS4033 F640/641/642/643 F640R /641R /642R /643R T0-22QAB IRF640, IRF641, IRF642,

    at27hc642

    Abstract: No abstract text available
    Text: Ä* tO 1992 Features • Bipolar Speed Read Access Time - 35ns • Low Power CMOS Operation 25 mA max. Standby 45 mA max. Active at 10 MHz • Direct Bipolar PROM Replacement • High Output Drtve Capability • Reprogrammable •10Ovis/byte typical Tested 100%for Programmability


    OCR Scan     		PDF 10Ovis/byte AT27HC641/2 AT27HC641R/642R AT27HC641R/2R at27hc642

    3866S

    Abstract: transistor a999 bs 7818 -1995 transistor tt 2206 A999 transistor TT 2206 transistor a1535A 8340UAS transistor 3866S 2SD 4515
    Text: H Integrated Circuits MOS LSIs Page MOS LSI Type No. Page Type No. Page Type No. Page Type No. Page M N 171608 42 A M N 18P73210 43 M N 3210 69 M N 5179/H 91 M N 171609 42 AM N 18P73215 43 M N 3214 69 MN5181 91 M N 3102 69 M N 53 00 0 Series 55 M N 33 00 Series


    OCR Scan     		PDF 1020G N12861 N12B62 MN1381 MN13811 MN13821 15P0802 15P5402 58851A 70803A 3866S transistor a999 bs 7818 -1995 transistor tt 2206 A999 transistor TT 2206 transistor a1535A 8340UAS transistor 3866S 2SD 4515

    at27hc642

    Abstract: No abstract text available
    Text: AT27HC641R/2R Features • • • • • • • • • • • Bipolar Speed Read Access Time - 35ns Low Power CMOS Operation 25 mA max. Standby 45 mA max. Active at 10 MHz Direct Bipolar PROM Replacement High Output Drive Capability Reprogrammable - I00us/byte typical


    OCR Scan     		PDF AT27HC641R/2R I00us/byte AT27HC641/2 AT27HC641R/642R 24DW6 24DW3 at27hc642

    4311 mosfet transistor

    Abstract: D 4206 TRANSISTOR transistor D 322 Power MOSFETs D 843 Transistor Transistor irf230 h a 431 transistor MOSFET IRF460 n-channel 4336 742r
    Text: - POWER MOSFETs 4 N-CHANNEL POWER MOSFETs PAGE 2N6755, 2N6756 N-Channel Enhancement-Mode Power Field-Effect Transistors. 2N6757, 2N6758 N-Channel Enhancement-Mode Power Field-Effect Transistors. 4-11 2N6759, 2N6760


    OCR Scan     		PDF 2N6755, 2N6756 2N6757, 2N6758 2N6759, 2N6760 2N6761, 2N6762 2N6763, 2N6764 4311 mosfet transistor D 4206 TRANSISTOR transistor D 322 Power MOSFETs D 843 Transistor Transistor irf230 h a 431 transistor MOSFET IRF460 n-channel 4336 742r

    AT27HC641

    Abstract: 12141S1 642R AT27HC641R-35DC F117 CODE AT27HC642R-35DC AT27HC641R-45DC 5962-87515 atmel 64 atmel64
    Text: Ä f 1 0 1992 Features 4lmiL • Bipolar Speed Read Access Time - 35ns • Low Power CMOS Operation 25 mA max. Standby 45 mA max. Active at 10 MHz • Direct Bipolar PROM Replacement • High Output Drive Capability • Reprogrammable • 100u*/byte typical


    OCR Scan     		PDF -I00n AT27HC641/2 A0-A12 AT27HC641R/2R AT27HC641 12141S1 642R AT27HC641R-35DC F117 CODE AT27HC642R-35DC AT27HC641R-45DC 5962-87515 atmel 64 atmel64