Fairchild Semiconductor Semiconductors Stock List

Part Number	Category	Family	Status	Description
DM74ALS251N	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	IC DATA SELECTOR/MUX 1-8 16DIP
DM74ALS251N FAIRCHIL 10824 14-15+ DIP Nego IC Co.Doris@negoic.com DM74ALS251N FAIRCHILD 87440 2016 Original&New&Rhos Hong Da Electronics Co.LTDbrenda@hongda-ic.com DM74ALS251N ROHS 87410 12+ originalnew IC INTERNATIONAL TRADING CO.jennifer@ic-international.hk DM74ALS251N S/N 10000 2013+ 2013+ World Link Parts components Dev.ltd-ORIGINAL ONLYsales@wlparts.com
74AC139MTC	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	DECODER/DEMUX 1-OF-4 16TSSOP
74AC139MTCX FAIRCHILD 2500 13+ 13+ Protec Engineering (S) Pte Ltd protec@vip.163.com 74AC139MTCX FAIRCHILDS 12500 14-15+ -- Nego IC Co. 74AC139MTCX N/A 10-5000 10/11+ smd/dip Fantastic Technologies limited. 74AC139MTCX S/N 10000 2013+ 2013+ World Link Parts components Dev.ltd-ORIGINAL ONLY
74AC151MTC	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER DGTL 8IN HS 16TSSOP
74AC151MTC Distributor direct 224210 2014+RoHS For more pls contact us Microtranik Components,Inc. microtranik@yeah.net 74AC151MTC FAIRCHILD 10000 2013+ 2013+ World Link Parts components Dev.ltd-ORIGINAL ONLY 74AC151MTC FAIRCHILD 2000 2013+ 8-Input Multiplexer Protec Engineering (S) Pte Ltd protec@vip.163.com 74AC151MTC NS 11546 14-15+ TSSOP Nego IC Co. 74AC151MTCX Fairchild 61776 12+ 16-TSSOP SINLIN ELECTRONICS LIMITED Authorized Distributor 74AC151MTCX Fairchild 61776 12+ 16-TSSOP SINLIN ELECTRONICS LIMITED Authorized Distributor 74AC151MTCX n/a 3000 10/11+ SMD/DIP Fantastic Technologies limited. 74AC151MTCX n/a 3000 10/11+ SMD/DIP Fantastic Technologies limited.
74AC151MTCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER DGTL 8IN HS 16TSSOP
74AC151MTCX Fairchild 61776 12+ 16-TSSOP SINLIN ELECTRONICS LIMITED Authorized Distributor 74AC151MTCX Fairchild 61776 12+ 16-TSSOP SINLIN ELECTRONICS LIMITED Authorized Distributor 74AC151MTCX n/a 3000 10/11+ SMD/DIP Fantastic Technologies limited. 74AC151MTCX n/a 3000 10/11+ SMD/DIP Fantastic Technologies limited.
74AC151SCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER DGTL 8IN HS 16SOIC
74AC151SCX FSC 50000 14+ 14+ Protec Engineering (S) Pte Ltd protec@vip.163.com 74AC151SCX n/a 10-10000 2011+ SMD/DIP Fantastic Technologies limited. 74AC151SCX nsc 3320 N/A European Union IC Industry Cor. 74AC151SCX NSC 6000 12+ call now SINLIN ELECTRONICS LIMITED Authorized Distributor
74AC153MTC	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER DUAL 4IN HS 16TSSOP
74AC153MTC Distributor direct 224530 2014+RoHS For more pls contact us Microtranik Components,Inc. microtranik@yeah.net 74AC153MTC Fairchild 88750 1525+ MULTIPLEXER DUAL 4IN HS 16TSSOP RONXIM ELECTRONICS LIMITED 74AC153MTC Fairchild 88750 1525+ MULTIPLEXER DUAL 4IN HS 16TSSOP Renxim Technology Limited. sales@renxim.com 74AC153MTC midcom 3500 2010+ PALMARY ELECTRONICS CO.,LTD 74AC153MTCX Electronics 26861 2014+ Pb-Free Unitronix Electronik GmbH 74AC153MTCX Fairchild 24695 12+ 16-TSSOP SINLIN ELECTRONICS LIMITED Authorized Distributor 74AC153MTCX Fairchild 24695 12+ 16-TSSOP SINLIN ELECTRONICS LIMITED Authorized Distributor 74AC153MTCX N/A 10-100000 2011+ SMD/DIP Fantastic Technologies limited.
74AC153MTCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER DUAL 4IN HS 16TSSOP
74AC153MTCX Electronics 26861 2014+ Pb-Free Unitronix Electronik GmbH 74AC153MTCX Fairchild 24695 12+ 16-TSSOP SINLIN ELECTRONICS LIMITED Authorized Distributor 74AC153MTCX Fairchild 24695 12+ 16-TSSOP SINLIN ELECTRONICS LIMITED Authorized Distributor 74AC153MTCX N/A 10-100000 2011+ SMD/DIP Fantastic Technologies limited.
74AC153SCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER DUAL 4IN HS 16SOIC
74AC153SCX 15679 14+ ROSH BIKEIC ELECTRONICS,CO.LTD 74AC153SCX Distributor 225110 17+ for more pls inquire us now Microtranik Components sales@microtranik.com 74AC153SCX Electronics 26261 2014+ Pb-Free Unitronix Electronics Inc. sales@unitronix-e.com 74AC153SCX Fairchild 88350 1525+ MULTIPLEXER DUAL 4IN HS 16SOIC Renxim Technology Limited. sales@renxim.com
74AC157MTC	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER QUAD 2IN HS 16TSSOP
74AC157MTCX /AC157 567948 13+ fenyang electronics co.,ltd 74AC157MTCX /AC157 NS 00+ Action Dynamic 74AC157MTCX/AC157 Fairchild 5000 10+ Action Dynamic 74AC157MTCX/AC157 Fairchild 5000 10+ All New Semi CO
74AC251MTC	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER 8INPUT 3ST 16TSSOP
74AC251MTCX 15679 14+ ROSH BIKEIC ELECTRONICS,CO.LTD 74AC251MTCX 15679 14+ ROSH BIKEIC ELECTRONICS,CO.LTD 74AC251MTCX 26656 15+ stock InMeiLe Technology 74AC251MTCX Fairchild 87750 1525+ MULTIPLEXER 8INPUT 3ST 16TSSOP Renxim Technology Limited. sales@renxim.com 74AC251MTCXNL RoHSCompli 58920 12+ OriginalNew IC INTERNATIONAL TRADING CO. 74AC251MTCXNL RoHSCompli 58920 12+ OriginalNew IC INTERNATIONAL TRADING CO. 74AC251MTCXNL RoHSCompli 58920 12+ OriginalNew IC INTERNATIONAL TRADING CO. 74AC251MTCXNL RoHSCompli 58920 12+ OriginalNew IC INTERNATIONAL TRADING CO.jennifer@ic-international.hk
74AC251MTCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER 8INPUT 3ST 16TSSOP
74AC251MTCX 15679 14+ ROSH BIKEIC ELECTRONICS,CO.LTD 74AC251MTCX 15679 14+ ROSH BIKEIC ELECTRONICS,CO.LTD 74AC251MTCX 26656 15+ stock InMeiLe Technology 74AC251MTCX Fairchild 87750 1525+ MULTIPLEXER 8INPUT 3ST 16TSSOP Renxim Technology Limited. sales@renxim.com 74AC251MTCXNL RoHSCompli 58920 12+ OriginalNew IC INTERNATIONAL TRADING CO. 74AC251MTCXNL RoHSCompli 58920 12+ OriginalNew IC INTERNATIONAL TRADING CO. 74AC251MTCXNL RoHSCompli 58920 12+ OriginalNew IC INTERNATIONAL TRADING CO. 74AC251MTCXNL RoHSCompli 58920 12+ OriginalNew IC INTERNATIONAL TRADING CO.jennifer@ic-international.hk
74AC257MTC	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER QUAD 2IN 3ST 16TSSOP
74AC257MTCX 567948 13+ fenyang electronics co.,ltd 74AC257MTCX 567948 13+ fenyang electronics co.,ltd 74AC257MTCX Electronics 26151 2014+ Pb-Free Unitronix Electronik GmbH 74AC257MTCX Electronics 26151 2014+ Pb-Free Unitronix Electronik GmbH
74AC257MTCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER QUAD 2IN 3ST 16TSSOP
74AC257MTCX 567948 13+ fenyang electronics co.,ltd 74AC257MTCX 567948 13+ fenyang electronics co.,ltd 74AC257MTCX Electronics 26151 2014+ Pb-Free Unitronix Electronik GmbH 74AC257MTCX Electronics 26151 2014+ Pb-Free Unitronix Electronik GmbH
74AC257SCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER QUAD 2IN 3ST 16SOIC
74AC257SCX 15679 14+ ROSH BIKEIC ELECTRONICS,CO.LTD 74AC257SCX Distributor 224710 17+ for more pls inquire us now Microtranik Components sales@microtranik.com 74AC257SCX Electronics 26361 2014+ Pb-Free Unitronix Electronics Inc. sales@unitronix-e.com 74AC257SCX Fairchild 89110 1525+ MULTIPLEXER QUAD 2IN 3ST 16SOIC Renxim Technology Limited. sales@renxim.com
74ACT151MTC	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER DGTL 8IN HS 16TSSOP
74ACT151MTC Fairchild 11500 12+ 16-TSSOP SINLIN ELECTRONICS LIMITED Authorized Distributor 74ACT151MTC Fairchild 88910 1525+ MULTIPLEXER DGTL 8IN HS 16TSSOP RONXIM ELECTRONICS LIMITED 74ACT151MTC Fairchild 88910 1525+ MULTIPLEXER DGTL 8IN HS 16TSSOP Renxim Technology Limited. sales@renxim.com 74ACT151MTC N/A 10-100000 2011+ SMD/DIP Fantastic Technologies limited. 74ACT151MTCX 15679 14+ ROSH BIKEIC ELECTRONICS,CO.LTD 74ACT151MTCX 26656 15+ stock InMeiLe Technology 74ACT151MTCX Distributor 173330 17+ for more pls inquire us now Microtranik Components sales@microtranik.com 74ACT151MTCX Electronics 26871 2014+ Pb-Free Unitronix Electronics Inc. sales@unitronix-e.com
74ACT151MTCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER DGTL 8IN HS 16TSSOP
74ACT151MTCX 15679 14+ ROSH BIKEIC ELECTRONICS,CO.LTD 74ACT151MTCX 26656 15+ stock InMeiLe Technology 74ACT151MTCX Distributor 173330 17+ for more pls inquire us now Microtranik Components sales@microtranik.com 74ACT151MTCX Electronics 26871 2014+ Pb-Free Unitronix Electronics Inc. sales@unitronix-e.com
74ACT151SC	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER HS 8INPUT 16SOIC
74ACT151SC FAIRCHILD 10000 2013+ 2013+ World Link Parts components Dev.ltd-ORIGINAL ONLY 74ACT151SC Fairchild 88510 1525+ MULTIPLEXER HS 8INPUT 16SOIC RONXIM ELECTRONICS LIMITED 74ACT151SC Fairchild 88510 1525+ MULTIPLEXER HS 8INPUT 16SOIC Renxim Technology Limited. sales@renxim.com 74ACT151SC FSC 11215 14-15+ SOP3.9 Nego IC Co. 74ACT151SCX 15679 14+ ROSH BIKEIC ELECTRONICS,CO.LTD 74ACT151SCX Distributor 171930 17+ for more pls inquire us now Microtranik Components sales@microtranik.com 74ACT151SCX Electronics 26271 2014+ Pb-Free Unitronix Electronics Inc. sales@unitronix-e.com 74ACT151SCX FAICHIL 17500 14-15+ SOP Nego IC Co.
74ACT151SCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER DGTL 8IN HS 16SOIC
74ACT151SCX 15679 14+ ROSH BIKEIC ELECTRONICS,CO.LTD 74ACT151SCX Distributor 171930 17+ for more pls inquire us now Microtranik Components sales@microtranik.com 74ACT151SCX Electronics 26271 2014+ Pb-Free Unitronix Electronics Inc. sales@unitronix-e.com 74ACT151SCX FAICHIL 17500 14-15+ SOP Nego IC Co.
74ACT153MTC	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER DUAL 4IN HS 16TSSOP
74ACT153MTCX /ACT153 PIC 05+ Action Dynamic 74ACT153MTCX /ACT153 15679 14+ ROSH BIKEIC ELECTRONICS,CO.LTD 74ACT153MTCX/ACT153 Fairchild 5000 10+ Action Dynamic 74ACT153MTCX/ACT153 Fairchild 5000 10+ All New Semi CO
74ACT157MTC	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER QUAD 2IN HS 16TSSOP
74ACT157MTCX Distributor direct 173450 2014+RoHS For more pls contact us Microtranik Components,Inc. microtranik@yeah.net 74ACT157MTCX Electronics 26411 2014+ Pb-Free Unitronix Electronik GmbH 74ACT157MTCX Electronics 26411 2014+ Pb-Free Unitronix Electronik GmbH 74ACT157MTCX Fairchild 87710 1525+ MULTIPLEXER QUAD 2IN HS 16TSSOP RONXIM ELECTRONICS LIMITED 74ACT157MTCX /ACT157 CYPRESS 03+ E-TOP INTERNATIONAL£¨HK... 74ACT157MTCX /ACT157 CYPRESS 10000 SSOP HY(HK) TECH LIMITED 74ACT157MTCX /ACT157 FAI 167 00+ FOR CHONG ELECTRONICS£¨... 74ACT157MTCX/ACT157 Fairchild 5000 10+ Bijing Xintongyuan Tec...
74ACT157MTCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER QUAD 2IN HS 16TSSOP
74ACT157MTCX Distributor direct 173450 2014+RoHS For more pls contact us Microtranik Components,Inc. microtranik@yeah.net 74ACT157MTCX Electronics 26411 2014+ Pb-Free Unitronix Electronik GmbH 74ACT157MTCX Electronics 26411 2014+ Pb-Free Unitronix Electronik GmbH 74ACT157MTCX Fairchild 87710 1525+ MULTIPLEXER QUAD 2IN HS 16TSSOP RONXIM ELECTRONICS LIMITED 74ACT157MTCX /ACT157 CYPRESS 03+ E-TOP INTERNATIONAL£¨HK... 74ACT157MTCX /ACT157 CYPRESS 10000 SSOP HY(HK) TECH LIMITED 74ACT157MTCX /ACT157 FAI 167 00+ FOR CHONG ELECTRONICS£¨... 74ACT157MTCX/ACT157 Fairchild 5000 10+ Bijing Xintongyuan Tec...
74ACT158MTC	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER QUAD 2INPUT 16TSSOP
74ACT158MTCX 567948 13+ fenyang electronics co.,ltd 74ACT158MTCX 567948 13+ fenyang electronics co.,ltd 74ACT158MTCX Distributor direct 172770 2014+RoHS For more pls contact us Microtranik Components Services 74ACT158MTCX Distributor direct 172770 2014+RoHS For more pls contact us Microtranik Components Services 74ACT158MTCX Distributor direct 172770 2014+RoHS For more pls contact us Microtranik Components,Inc. microtranik@yeah.net 74ACT158MTCX Distributor direct 172770 2014+RoHS For more pls contact us Microtranik Components,Inc. microtranik@yeah.net 74ACT158MTCX Electronics 26791 2014+ Pb-Free Unitronix Electronik GmbH 74ACT158MTCX Fairchild 87310 1525+ MULTIPLEXER QUAD 2INPUT 16TSSOP RONXIM ELECTRONICS LIMITED
74ACT158MTCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER QUAD 2INPUT 16TSSOP
74ACT158MTCX 567948 13+ fenyang electronics co.,ltd 74ACT158MTCX 567948 13+ fenyang electronics co.,ltd 74ACT158MTCX Distributor direct 172770 2014+RoHS For more pls contact us Microtranik Components Services 74ACT158MTCX Distributor direct 172770 2014+RoHS For more pls contact us Microtranik Components Services 74ACT158MTCX Distributor direct 172770 2014+RoHS For more pls contact us Microtranik Components,Inc. microtranik@yeah.net 74ACT158MTCX Distributor direct 172770 2014+RoHS For more pls contact us Microtranik Components,Inc. microtranik@yeah.net 74ACT158MTCX Electronics 26791 2014+ Pb-Free Unitronix Electronik GmbH 74ACT158MTCX Fairchild 87310 1525+ MULTIPLEXER QUAD 2INPUT 16TSSOP RONXIM ELECTRONICS LIMITED
74ACT158SCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER QUAD 2INPUT 16SOIC
74ACT158SCX Distributor direct 171770 2014+RoHS For more pls contact us Microtranik Components,Inc. microtranik@yeah.net 74ACT158SCX Distributor direct 171770 2014+RoHS For more pls contact us Microtranik Components,Inc. microtranik@yeah.net 74ACT158SCX Good price 89150 15-16+ new and original package well Renxim Technology Solutions Ltd. info@renxim.com 74ACT158SCX nsc 1555 dc97 dc97 PALMARY ELECTRONICS CO.,LTD
74ACT253MTCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER DUAL 4IN 3ST 16TSSOP
74ACT253MTCX Distributor direct 173270 2014+RoHS For more pls contact us Microtranik Components Services 74ACT253MTCX Distributor direct 173270 2014+RoHS For more pls contact us Microtranik Components,Inc. microtranik@yeah.net 74ACT253MTCX Electronics 26781 2014+ Pb-Free Unitronix Electronik GmbH 74ACT253MTCX Fairchild 88930 1525+ MULTIPLEXER DUAL 4IN 3ST 16TSSOP RONXIM ELECTRONICS LIMITED
74ACT257MTC	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER QUAD 2IN 3ST 16TSSOP
74ACT257MTCX 9000 call ic2ic@sinlin-e.com SINLIN ELECTRONICS LIMITED Authorized Distributor 74ACT257MTCX FSC 2235 0142 MACROQUEST ELECTRONICS CO., LTDZHANCHUN1214@VIP.163.COM 74ACT257MTCX FSC 9250 12-13+ TSSOP16 Nego IC Co. 74ACT257MTCX FSC 9250 12-13+ TSSOP16 Nego IC Co.Doris@negoic.com 74ACT257MTCX S/N 10000 2013+ 2013+ World Link Parts components Dev.ltd-ORIGINAL ONLY 74ACT257MTCX SONY 10000 BGA HY(HK) TECH LIMITED 74ACT257MTCX/ACT257 FAICHILD 1893 01+ TSSOP-16 Protec Engineering (S) Pte Ltd protec@vip.163.com 74ACT257MTCX/ACT257 FAICHILD 1893 01+ TSSOP-16 Protec Engineering (S) Pte Ltd protec@vip.163.com
74ACT257MTCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER QUAD 2IN 3ST 16TSSOP
74ACT257MTCX 9000 call ic2ic@sinlin-e.com SINLIN ELECTRONICS LIMITED Authorized Distributor 74ACT257MTCX FSC 2235 0142 MACROQUEST ELECTRONICS CO., LTDZHANCHUN1214@VIP.163.COM 74ACT257MTCX FSC 9250 12-13+ TSSOP16 Nego IC Co. 74ACT257MTCX FSC 9250 12-13+ TSSOP16 Nego IC Co.Doris@negoic.com 74ACT257MTCX S/N 10000 2013+ 2013+ World Link Parts components Dev.ltd-ORIGINAL ONLY 74ACT257MTCX SONY 10000 BGA HY(HK) TECH LIMITED 74ACT257MTCX/ACT257 FAICHILD 1893 01+ TSSOP-16 Protec Engineering (S) Pte Ltd protec@vip.163.com 74ACT257MTCX/ACT257 FAICHILD 1893 01+ TSSOP-16 Protec Engineering (S) Pte Ltd protec@vip.163.com
74ACT258MTCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	MULTIPLEXER QUAD 2IN 3ST 16TSSOP
74ACT258MTCX 36655 14+ IN STOCK RUI JIA KE ELECTRONICS 74ACT258MTCX 26656 15+ stock WIGE(HK)ELECTRONICS CO.,LTD 74ACT258MTCX 26656 15+ stock InMeiLe Technology 74ACT258MTCX Fairchild 19500 12+ 16-TSSOP SINLIN ELECTRONICS LIMITED Authorized Distributor
74ACT399MTCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	IC REGISTER QUAD 2PORT 16TSSOP
74ACT399MTCX 15679 14+ ROSH BIKEIC ELECTRONICS,CO.LTD 74ACT399MTCX Distributor 172370 17+ for more pls inquire us now Microtranik Components sales@microtranik.com 74ACT399MTCX Electronics 26971 2014+ Pb-Free Unitronix Electronics Inc. sales@unitronix-e.com 74ACT399MTCX Fairchild 87930 1525+ IC REGISTER QUAD 2PORT 16TSSOP Renxim Technology Limited. sales@renxim.com
74ACT399SCX	Integrated Circuits (ICs)	Logic - Signal Switches, Multiplexers, Decoders	Obsolete item	IC REGISTER QUAD 2PORT 16SOIC
74ACT399SCX N/A 10-5000 10/11+ smd/dip Fantastic Technologies limited. 74ACT399SCX NS 10000 2013+ 2013+ World Link Parts components Dev.ltd-ORIGINAL ONLY 74ACT399SCX NS 441 9642 n/a Protec Engineering (S) Pte Ltd protec@vip.163.com 74ACT399SCX NSC 10441 14-15+ SOP16 Nego IC Co.