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

    74AHCT3G14 Search Results

    SF Impression Pixel

    74AHCT3G14 Price and Stock

    Nexperia 74AHCT3G14DP-Q100H

    IC INVERT SCHMITT 3CH 3IN 8TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey 74AHCT3G14DP-Q100H Digi-Reel 2,980 1
    • 1 $0.56
    • 10 $0.398
    • 100 $0.31
    • 1000 $0.26401
    • 10000 $0.26401
    		Buy Now
    74AHCT3G14DP-Q100H Cut Tape 2,980 1
    • 1 $0.56
    • 10 $0.398
    • 100 $0.31
    • 1000 $0.26401
    • 10000 $0.26401
    		Buy Now
    74AHCT3G14DP-Q100H Reel 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.25059
    		Buy Now
    Avnet Americas 74AHCT3G14DP-Q100H Reel 8 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.22575
    		Buy Now
    Mouser Electronics 74AHCT3G14DP-Q100H
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.234
    		Get Quote
    Verical 74AHCT3G14DP-Q100H 96,000 1,613
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.2325
    		Buy Now
    Rochester Electronics 74AHCT3G14DP-Q100H 96,000 1
    • 1 $0.2188
    • 10 $0.2188
    • 100 $0.2057
    • 1000 $0.186
    • 10000 $0.186
    		Buy Now
    TTI 74AHCT3G14DP-Q100H Reel 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.227
    		Buy Now
    Avnet Silica 74AHCT3G14DP-Q100H 10 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now

    Nexperia 74AHCT3G14DC,125

    IC INVERT SCHMITT 3CH 3IN 8VSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey 74AHCT3G14DC,125 Digi-Reel 1,569 1
    • 1 $0.48
    • 10 $0.34
    • 100 $0.2634
    • 1000 $0.22343
    • 10000 $0.22343
    		Buy Now
    74AHCT3G14DC,125 Cut Tape 1,569 1
    • 1 $0.48
    • 10 $0.34
    • 100 $0.2634
    • 1000 $0.22343
    • 10000 $0.22343
    		Buy Now
    74AHCT3G14DC,125 Reel 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.16893
    		Buy Now
    Avnet Americas 74AHCT3G14DC,125 Reel 8 Weeks 6,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.15885
    		Buy Now
    Mouser Electronics 74AHCT3G14DC,125 7,610
    • 1 $0.48
    • 10 $0.304
    • 100 $0.245
    • 1000 $0.208
    • 10000 $0.151
    		Buy Now
    Verical 74AHCT3G14DC,125 9,000 2,424
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.1548
    		Buy Now
    Rochester Electronics 74AHCT3G14DC,125 9,000 1
    • 1 $0.1457
    • 10 $0.1457
    • 100 $0.137
    • 1000 $0.1238
    • 10000 $0.1238
    		Buy Now
    TTI 74AHCT3G14DC,125 Reel 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.14
    		Buy Now
    Avnet Silica 74AHCT3G14DC,125 10 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    EBV Elektronik 74AHCT3G14DC,125 10 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now

    Nexperia 74AHCT3G14DP,125

    IC INVERT SCHMITT 3CH 3IN 8TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey 74AHCT3G14DP,125 Cut Tape 1,411 1
    • 1 $0.45
    • 10 $0.313
    • 100 $0.2419
    • 1000 $0.20473
    • 10000 $0.20473
    		Buy Now
    74AHCT3G14DP,125 Digi-Reel 1,411 1
    • 1 $0.45
    • 10 $0.313
    • 100 $0.2419
    • 1000 $0.20473
    • 10000 $0.20473
    		Buy Now
    74AHCT3G14DP,125 Reel 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.17889
    		Buy Now
    Avnet Americas 74AHCT3G14DP,125 Reel 8 Weeks 6,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.16067
    		Buy Now
    Mouser Electronics 74AHCT3G14DP,125 2,633
    • 1 $0.45
    • 10 $0.28
    • 100 $0.225
    • 1000 $0.205
    • 10000 $0.167
    		Buy Now
    Verical 74AHCT3G14DP,125 2,900 2,287
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.164
    		Buy Now
    Newark 74AHCT3G14DP,125 Cut Tape 6,334 5
    • 1 $0.603
    • 10 $0.494
    • 100 $0.367
    • 1000 $0.236
    • 10000 $0.236
    		Buy Now
    Rochester Electronics 74AHCT3G14DP,125 2,900 1
    • 1 $0.1544
    • 10 $0.1544
    • 100 $0.1451
    • 1000 $0.1312
    • 10000 $0.1312
    		Buy Now
    TTI 74AHCT3G14DP,125 Reel 6,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.173
    		Buy Now
    Avnet Asia 74AHCT3G14DP,125 8 Weeks 6,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.16263
    		Buy Now
    Avnet Silica 74AHCT3G14DP,125 10 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    EBV Elektronik 74AHCT3G14DP,125 10 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now

    Rochester Electronics LLC 74AHCT3G14GD,125

    IC INVERTER
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey 74AHCT3G14GD,125 Bulk 2,049
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.15
    		Buy Now

    Nexperia 74AHCT3G14GT,115

    IC INVERT SCHMITT 3CH 3INP 8XSON
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey 74AHCT3G14GT,115 Reel 5,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.07952
    		Buy Now
    Avnet Americas 74AHCT3G14GT,115 Reel 6 Weeks 10,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.07695
    		Buy Now
    Mouser Electronics 74AHCT3G14GT,115
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.077
    		Get Quote
    Verical 74AHCT3G14GT,115 65,000 5,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.075
    		Buy Now
    74AHCT3G14GT,115 41,193 5,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.075
    		Buy Now
    Rochester Electronics 74AHCT3G14GT,115 106,193 1
    • 1 $0.0706
    • 10 $0.0706
    • 100 $0.0664
    • 1000 $0.06
    • 10000 $0.06
    		Buy Now
    TTI 74AHCT3G14GT,115 Reel 5,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.075
    		Buy Now
    EBV Elektronik 74AHCT3G14GT,115 8 Weeks 5,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    Find more 74AHCT3G14 price and stock on Findchips.com

    74AHCT3G14 Datasheets (25)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    74AHCT3G14 Philips Semiconductors Original PDF
    74AHCT3G14DC Philips Semiconductors Inverter/Schmitt Trigger, 3-Element, CMOS, 8-TSSOP Original PDF
    74AHCT3G14DC Philips Semiconductors Original PDF
    74AHCT3G14DC,125 NXP Semiconductors Inverting Schmitt trigger - Description: Triple Inverter Schmitt-Trigger ; Logic switching levels: TTL ; Number of pins: 8 ; Output drive capability: +/- 8 mA ; Power dissipation considerations: Low Power ; Propagation delay: 4.1 ns; Voltage: 4.5-5.5 V; Package: SOT765-1 (VSSOP8); Container: Reel Pack, Reverse, Reverse Original PDF
    74AHCT3G14DC,125 NXP Semiconductors 74AHCT3G14 - IC AHCT/VHCT/VT SERIES, TRIPLE 1-INPUT INVERT GATE, PDSO8, 2.30 MM, PLASTIC, MO-187, SOT765-1, VSSOP-8, Gate Original PDF
    74AHCT3G14DC-G NXP Semiconductors Inverting Schmitt trigger - Description: Triple Inverter Schmitt-Trigger ; Logic switching levels: TTL ; Number of pins: 8 ; Output drive capability: +/- 8 mA ; Power dissipation considerations: Low Power ; Propagation delay: 4.1 ns; Voltage: 4.5-5.5 V Original PDF
    74AHCT3G14DC-G NXP Semiconductors 74AHCT3G14DC - Inverting Schmitt trigger - Description: Triple Inverter Schmitt-Trigger ; Logic switching levels: TTL ; Number of pins: 8 ; Output drive capability: +/- 8 mA ; Power dissipation considerations: Low Power ; Propagation delay: 4.1 ns; Voltage: 4.5-5.5 V Original PDF
    74AHCT3G14DC-Q100 NXP Semiconductors Triple inverting Schmitt trigger Original PDF
    74AHCT3G14DC-Q100H NXP Semiconductors 74AHCT3G14DC-Q100 - 74AHCT3G14DC-Q100 - Triple inverting Schmitt trigger Original PDF
    74AHCT3G14DP Philips Semiconductors Original PDF
    74AHCT3G14DP Philips Semiconductors Inverter/Schmitt Trigger, 3-Element, CMOS, 8-TSSOP Original PDF
    74AHCT3G14DP,125 NXP Semiconductors Inverting Schmitt trigger - Description: Triple Inverter Schmitt-Trigger ; Logic switching levels: TTL ; Number of pins: 8 ; Output drive capability: +/- 8 mA ; Power dissipation considerations: Low Power ; Propagation delay: 4.1 ns; Voltage: 4.5-5,5 V; Package: SOT505-2 (TSSOP8); Container: Reel Pack, Reverse, Reverse Original PDF
    74AHCT3G14DP,125 NXP Semiconductors 74AHCT3G14 - IC AHCT/VHCT/VT SERIES, TRIPLE 1-INPUT INVERT GATE, PDSO8, 3 MM, PLASTIC, SOT505-2, TSSOP-8, Gate Original PDF
    74AHCT3G14DP-G NXP Semiconductors Inverting Schmitt trigger - Description: Triple Inverter Schmitt-Trigger ; Logic switching levels: TTL ; Number of pins: 8 ; Output drive capability: +/- 8 mA ; Power dissipation considerations: Low Power ; Propagation delay: 4.1 ns; Voltage: 4.5-5,5 V Original PDF
    74AHCT3G14DP-G NXP Semiconductors 74AHCT3G14DP - Inverting Schmitt trigger - Description: Triple Inverter Schmitt-Trigger ; Logic switching levels: TTL ; Number of pins: 8 ; Output drive capability: +/- 8 mA ; Power dissipation considerations: Low Power ; Propagation delay: 4.1 ns; Voltage: 4.5-5,5 V Original PDF
    74AHCT3G14DP-Q100 NXP Semiconductors Triple inverting Schmitt trigger Original PDF
    74AHCT3G14DP-Q100H NXP Semiconductors 74AHCT3G14DP-Q100 - 74AHCT3G14DP-Q100 - Triple inverting Schmitt trigger Original PDF
    74AHCT3G14GD NXP Semiconductors Triple inverting Schmitt trigger Original PDF
    74AHCT3G14GD,125 NXP Semiconductors Inverting Schmitt trigger; Package: SOT996-2 (XSON8U); Container: Reel Pack, Reverse, Reverse Original PDF
    74AHCT3G14GD,125 NXP Semiconductors 74AHCT3G14 - IC AHCT/VHCT/VT SERIES, TRIPLE 1-INPUT INVERT GATE, PDSO8, 3 X 2 MM, 0.50 MM HEIGHT, PLASTIC, SOT996-2, XSON-8, Gate Original PDF

    74AHCT3G14 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    74AHC3G14

    Abstract: 74AHC3G14DP 74AHCT3G14 74AHCT3G14DP AHC3G14
    Text: INTEGRATED CIRCUITS DATA SHEET 74AHC3G14; 74AHCT3G14 Inverting Schmitt trigger Product specification 2003 Nov 27 Philips Semiconductors Product specification Inverting Schmitt trigger 74AHC3G14; 74AHCT3G14 FEATURES APPLICATIONS • Symmetrical output impedance


    Original     		PDF 74AHC3G14; 74AHCT3G14 EIA/JESD22-A114-A EIA/JESD22-A115-A EIA/JESD22-C101 74AHC3G/AHCT3G14 SCA75 74AHC3G14 74AHC3G14DP 74AHCT3G14 74AHCT3G14DP AHC3G14

    Untitled

    Abstract: No abstract text available
    Text: 74AHC3G14-Q100; 74AHCT3G14-Q100 Triple inverting Schmitt trigger Rev. 3 — 16 September 2013 Product data sheet 1. General description 74AHC3G14-Q100 and 74AHCT3G14-Q100 are high-speed Si-gate CMOS devices. They provide three inverting buffers with Schmitt trigger action. These devices are


    Original     		PDF 74AHC3G14-Q100; 74AHCT3G14-Q100 74AHC3G14-Q100 74AHCT3G14-Q100 AHCT3G14

    74AHC3G14

    Abstract: 74AHC3G14DC 74AHC3G14DP 74AHCT3G14 74AHCT3G14DC 74AHCT3G14DP
    Text: 74AHC3G14; 74AHCT3G14 Triple inverting Schmitt trigger Rev. 6 — 18 November 2010 Product data sheet 1. General description 74AHC3G14 and 74AHCT3G14 are high-speed Si-gate CMOS devices. They provide three inverting buffers with Schmitt trigger action. These devices are capable of


    Original     		PDF 74AHC3G14; 74AHCT3G14 74AHC3G14 74AHCT3G14 JESD22-A114F JESD22-A115-A JESD22-C101D 10ons AHCT3G14 74AHC3G14DC 74AHC3G14DP 74AHCT3G14DC 74AHCT3G14DP

    74AHC3G14

    Abstract: 74AHC3G14DC 74AHC3G14DP 74AHC3G14GD 74AHCT3G14 74AHCT3G14DC 74AHCT3G14DP JESD22-A114E
    Text: 74AHC3G14; 74AHCT3G14 Inverting Schmitt trigger Rev. 03 — 17 June 2008 Product data sheet 1. General description 74AHC3G14 and 74AHCT3G14 are high-speed Si-gate CMOS devices. They provide an inverting buffer function with Schmitt trigger action. These devices are capable of


    Original     		PDF 74AHC3G14; 74AHCT3G14 74AHC3G14 74AHCT3G14 JESD22-A114E JESD22-A115-A JESD22-C101C AHCT3G14 74AHC3G14DC 74AHC3G14DP 74AHC3G14GD 74AHCT3G14DC 74AHCT3G14DP

    Untitled

    Abstract: No abstract text available
    Text: 74AHC3G14; 74AHCT3G14 Triple inverting Schmitt trigger Rev. 8 — 13 May 2013 Product data sheet 1. General description 74AHC3G14 and 74AHCT3G14 are high-speed Si-gate CMOS devices. They provide three inverting buffers with Schmitt trigger action. These devices are capable of


    Original     		PDF 74AHC3G14; 74AHCT3G14 74AHC3G14 74AHCT3G14 JESD22-A114F JESD22-A115-A JESD22-C101D AHCT3G14

    74AHC3G14

    Abstract: 74AHC3G14DC 74AHC3G14DP 74AHC3G14GD 74AHCT3G14 74AHCT3G14DC 74AHCT3G14DP JESD22-A114E AHC* marking
    Text: 74AHC3G14; 74AHCT3G14 Inverting Schmitt trigger Rev. 04 — 5 May 2009 Product data sheet 1. General description 74AHC3G14 and 74AHCT3G14 are high-speed Si-gate CMOS devices. They provide an inverting buffer function with Schmitt trigger action. These devices are capable of


    Original     		PDF 74AHC3G14; 74AHCT3G14 74AHC3G14 74AHCT3G14 JESD22-A114E JESD22-A115-A JESD22-C101C AHCT3G14 74AHC3G14DC 74AHC3G14DP 74AHC3G14GD 74AHCT3G14DC 74AHCT3G14DP AHC* marking

    NXP MARKING A14

    Abstract: No abstract text available
    Text: 74AHC3G14; 74AHCT3G14 Inverting Schmitt trigger Rev. 5 — 23 September 2010 Product data sheet 1. General description 74AHC3G14 and 74AHCT3G14 are high-speed Si-gate CMOS devices. They provide an inverting buffer function with Schmitt trigger action. These devices are capable of


    Original     		PDF 74AHC3G14; 74AHCT3G14 74AHC3G14 74AHCT3G14 JESD22-A114F JESD22-A115-A JESD22-C101D AHCT3G14 NXP MARKING A14

    Untitled

    Abstract: No abstract text available
    Text: 74AHC3G14; 74AHCT3G14 Triple inverting Schmitt trigger Rev. 7 — 8 November 2011 Product data sheet 1. General description 74AHC3G14 and 74AHCT3G14 are high-speed Si-gate CMOS devices. They provide three inverting buffers with Schmitt trigger action. These devices are capable of


    Original     		PDF 74AHC3G14; 74AHCT3G14 74AHC3G14 74AHCT3G14 JESD22-A114F JESD22-A115-A AHCT3G14

    Untitled

    Abstract: No abstract text available
    Text: 74AHC3G14-Q100; 74AHCT3G14-Q100 Triple inverting Schmitt trigger Rev. 1 — 1 October 2012 Product data sheet 1. General description 74AHC3G14-Q100 and 74AHCT3G14-Q100 are high-speed Si-gate CMOS devices. They provide three inverting buffers with Schmitt trigger action. These devices are


    Original     		PDF 74AHC3G14-Q100; 74AHCT3G14-Q100 74AHC3G14-Q100 74AHCT3G14-Q100 AHCT3G14

    Untitled

    Abstract: No abstract text available
    Text: 74AHC3G14; 74AHCT3G14 Triple inverting Schmitt trigger Rev. 7 — 8 November 2011 Product data sheet 1. General description 74AHC3G14 and 74AHCT3G14 are high-speed Si-gate CMOS devices. They provide three inverting buffers with Schmitt trigger action. These devices are capable of


    Original     		PDF 74AHC3G14; 74AHCT3G14 74AHC3G14 74AHCT3G14 JESD22-A114F JESD22-A115-A JESD22-C101D AHCT3G14

    aSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER IN

    Abstract: schmitt trigger 74AHC3G14 74AHC3G14DP 74AHCT3G14 74AHCT3G14DP
    Text: INTEGRATED CIRCUITS DATA SHEET 74AHC3G14; 74AHCT3G14 Inverting Schmitt trigger Product specification Supersedes data of 2003 Nov 27 2004 Oct 18 Philips Semiconductors Product specification Inverting Schmitt trigger 74AHC3G14; 74AHCT3G14 FEATURES APPLICATIONS


    Original     		PDF 74AHC3G14; 74AHCT3G14 EIA/JESD22-A114-B EIA/JESD22-A115-A EIA/JESD22-C101 74AHC3G/AHCT3G14 SCA76 aSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER IN schmitt trigger 74AHC3G14 74AHC3G14DP 74AHCT3G14 74AHCT3G14DP

    Untitled

    Abstract: No abstract text available
    Text: 74AHC3G14-Q100; 74AHCT3G14-Q100 Triple inverting Schmitt trigger Rev. 2 — 28 January 2013 Product data sheet 1. General description 74AHC3G14-Q100 and 74AHCT3G14-Q100 are high-speed Si-gate CMOS devices. They provide three inverting buffers with Schmitt trigger action. These devices are


    Original     		PDF 74AHC3G14-Q100; 74AHCT3G14-Q100 74AHC3G14-Q100 74AHCT3G14-Q100 AHCT3G14

    74hc273

    Abstract: SMD CODE list mosfet 6pin k 2129 MOSFET TRANSISTOR SMD CODE PACKAGE SOT363 TRIAC dimmer control I2C LPC2129 ARM7TDMI-S programming SOT363 flash TEA1620P TEA1623P PBLS1503V
    Text: NEW MULTIMARKET PRODUCTS QUARTERLY HIGHLIGHTS VOLUME 3 ISSUE 1 Semiconductors F E B R U A RY 2 0 0 4 Discretes Power management Logic Interface products Microcontrollers In this issue: 1. PCA9510, PCA9511, PCA9512, PCA9513, PCA9514 Hot swappable I2C and SMBus buffers


    Original     		PDF PCA9510, PCA9511, PCA9512, PCA9513, PCA9514 74ALVCxxx BGA2715, BGA2716 LPC2119, LPC2129 74hc273 SMD CODE list mosfet 6pin k 2129 MOSFET TRANSISTOR SMD CODE PACKAGE SOT363 TRIAC dimmer control I2C LPC2129 ARM7TDMI-S programming SOT363 flash TEA1620P TEA1623P PBLS1503V

    BUK2114

    Abstract: BUK2114-50SYTS saa7117 SAA7136E MPSA92 168 saa7136 buk2914-50syts TDA8920BTH bu4508dx KMZ52
    Text: Index Type number Page number 1N4148 34 1N4531 34 1N47xxA series 44 1PS10SB62 32 1PS10SB63 32 1PS10SB82 32 1PS181 36 1PS184 36 1PS193 34 1PS226 36 1PS59SB10 28 1PS59SB14 28 1PS59SB15 28 1PS59SB16 28 1PS59SB20 30 1PS59SB21 28 1PS66SB17 32 1PS66SB62 32 1PS66SB63


    Original     		PDF 1N4148 1N4531 1N47xxA 1PS10SB62 1PS10SB63 1PS10SB82 1PS181 1PS184 1PS193 1PS226 BUK2114 BUK2114-50SYTS saa7117 SAA7136E MPSA92 168 saa7136 buk2914-50syts TDA8920BTH bu4508dx KMZ52

    74hc273

    Abstract: 74hct273 74HCT390 3Gxxx hef4750 hef4066 toshiba datecode 74HC4520 dual sot363 marking code dp 74f3037
    Text: Logic Logic 93 5 Volt Logic Product Spectrum FEATURES AND FUNCTIONS FUNCTIONAL MATRIX • ALVT • • HEF4000 • • • • • • • • • • • HC/HCT • • • • • • • • • • • FAST • • • • • • • • • • • ABT


    Original     		PDF HEF4000 MB2245 16-Bit MB2543 MB2652 74hc273 74hct273 74HCT390 3Gxxx hef4750 hef4066 toshiba datecode 74HC4520 dual sot363 marking code dp 74f3037