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SN74LS540DW /缓冲器和线路驱动器 Octal w/Tri-St Out
SN74LS540DW的规格信息
SN74LS540DW的图片

图像仅供参考，请参阅规格书

制造商:Texas Instruments

产品种类:缓冲器和线路驱动器

RoHS:是

输入线路数量:8 Input

输出线路数量:8 Output

极性:Inverting

电源电压-最大:5.25 V

电源电压-最小:4.75 V

最小工作温度:0 C

最大工作温度:+ 70 C

安装风格:SMD/SMT

封装 / 箱体:SOIC-20

封装:Tube

功能:Buffer/Line Driver

高度:2.35 mm

长度:12.8 mm

工作温度范围:0 C to + 70 C

输出类型:3-State

系列:SN74LS540

技术:Bipolar

宽度:7.52 mm

商标:Texas Instruments

逻辑系列:LS

逻辑类型:Bipolar

通道数量:8

高电平输出电流:- 15 mA

输入信号类型:Single-Ended

低电平输出电流:24 mA

工作电源电流:45 uA

工作电源电压:5 V

产品类型:Buffers & Line Drivers

传播延迟时间:15 ns at 5 V

工厂包装数量:25

子类别:Logic ICs

单位重量:500.700 mg

供应商SN74LS540DW
SN74LS540DW的供应商,可免费索样
供应商型号地址联系电话联系人在线联系询价
深圳市威雅利发展有限公司SN74LS540DW 工控元件华强北路1019号华强广场A16楼18124047120
18124047120		韩雪Email:3004202884@qq.com询价
深圳市芯幂科技有限公司SN74LS540DW深圳市福田区福田街道福安社区民田路178号华融大厦240513267088774
13267088774 (微信同号)		Alienskype:live:.cid.3d55cb3c1097ae8dEmail:service@xinmisc.com询价
深圳市坤融电子有限公司SN74LS540DWR航都大厦10I0755-23990975
13926529829，17318082080		肖瑶，树平Email:hzk@krchips.com询价
深圳市成源运利电子科技有限公司SN74LS540DWR深圳市福田区华强路东方时代广场A2705159-13992480
15913992480		林先生Email:244673889@qq.com询价
深圳市辉华拓展电子有限公司SN74LS540DW深圳市福田区航都大厦25F0755-83289799
18129819897		蔡小姐Email:sam@678ic.com询价
深圳市赛美科科技有限公司SN74LS540DW广东省深圳市福田区华强北上步工业区101栋5楼A5950755-28309323
13480875861		雷小姐，微信与手机号同号QQ无回复请加微信或打电话Email:2053086415@qq.com询价
深圳市仓实科技有限公司SN74LS540DW深圳市福田区福田街道17080955875李先生Email:service@cangshixc.com询价
北京金州智业科技有限公司SN74LS540DWwww.bjjzzy.com13683302275
13683302275		王先生Email:359548161@qq.com询价
深圳市维基鸿电子有限公司SN74LS540DW赛格科技园2栋100813148740189/ 19520735817/13632918917
13590238352，13058174971, 18123793983, 13148740189, 13632918917		文小姐，米小姐，朱小姐Email:1076822082@QQ.COM询价
深圳市高捷半导体有限公司SN74LS540DW深圳市福田区航都大厦10层13380394549
13380394549		颜小姐Email:2881915365@qq.com询价
芯莱德电子（香港）有限公司SN74LS540DW深圳市福田区航都大厦10L13352985419
13352985419，19076157484		杨先生Email:2881915365@qq.com询价
深圳市高捷芯城科技有限公司SN74LS540DW深圳市福田区航都大厦10B13352985419
13352985419		木易Email:2881915365@qq.com询价
深圳市浩睿泽电子科技有限公司SN74LS540DW深圳市福田区福田街道岗厦社区彩田路3069号星河世纪A栋2003F1919854773352
19854773352		罗先生Email:250652363@qq.com询价
集好芯城SN74LS540DW深圳市福田区航都大厦25F4008626627
13360071553		陈泽辉Email:sam@678ic.com询价
深圳市亿鸿丰电子科技有限公司SN74LS540DW深圳市福田区华富路1046-1号华康大厦2栋2楼2100755-83230201
19147724283，19147721680		王小姐，刘先生Email:345720093@qq.com询价
集好芯城SN74LS540DW深圳市福田区航都大厦25F0755-82564006
18188616613		郑小姐Email:sam@678ic.com询价
深圳市荣创芯微科技有限公司SN74LS540DWR深圳市福田区华强北都会B做12N0755-82501483
15818715186		郭小姐Email:860705666@qq.com询价
柒号芯城电子商务（深圳）有限公司SN74LS540DW深圳市福田区华强北路1019号华强广场D座23楼0755-83663056
18922805453，18929374037，18922803401		连Email:seven@7-ic.com询价
深圳市德州众泰科技有限公司SN74LS540DW深圳市福田区航都大厦25F0755-82780836
13360526935		蔡泽锋Email:sam@678ic.com询价
深圳市芯泽盛世科技有限公司SN74LS540DW龙岗区平湖街道平湖社区平安大道3号铁东物流区11栋18220755-89697985
18822854608		李先生Email:2119980731@qq.com询价
SN74LS540DW及相关型号的PDF资料
型号功能描述生产厂商厂商LOGOPDF大小PDF页数下载地址相关型号
SN74LS540DWOCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS TI[Texas Instruments]TI[Texas Instruments]的LOGO169.92 Kbytes共5页SN74LS540DW的PDF下载地址SN54ALS541,SN54LS240,SN54BCT2240,SN54BCT2244,SN54ALS244C,SN54HCT240,SN54LS540,SN54HCT244,SN54ALS244B,SN54ABT2240A
SN74LS540DWOCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS ONSEMI[ON Semiconductor]ONSEMI[ON Semiconductor]的LOGO75.14 Kbytes共3页SN74LS540DW的PDF下载地址SN54LS540,74LVC541A,SN74LVC240A,74ABT241,74F540,74VHCT245A,DS244,SN74LVT244B,SN74LVC244A,74ABT244
SN74LS540DWOCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS MOTOROLA[Motorola, Inc]MOTOROLA[Motorola, Inc]的LOGO203.67 Kbytes共5页SN74LS540DW的PDF下载地址74LVC541A,SN74LVC240A,74ABT241,74F540,74VHCT245A,DS244,SN74LVT244B,SN74LVC244A,74ABT244,74FR240
SN74LS540DWOCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS TI[Texas Instruments]TI[Texas Instruments]的LOGO597.71 Kbytes共15页SN74LS540DW的PDF下载地址SN54ALS541,SN54LS240,SN54BCT2240,SN54BCT2244,SN54ALS244C,SN54HCT240,SN54HCT244,SN54ABT2240A,SN54ALS244B,SN54ABT2241
SN74LS540DWOCTAL BUFFERS AND LINE DRIVERS TI1[Texas Instruments]TI1[Texas Instruments]的LOGO1391.1 Kbytes共21页SN74LS540DW的PDF下载地址无
SN74LS540DWE4OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS TI[Texas Instruments]TI[Texas Instruments]的LOGO597.71 Kbytes共15页SN74LS540DWE4的PDF下载地址SN54ALS541,SN54LS240,SN54BCT2240,SN54BCT2244,SN54ALS244C,SN54HCT240,SN54HCT244,SN54ABT2240A,SN54ALS244B,SN54ABT2241
SN74LS540DWG4OCTAL BUFFERS AND LINE DRIVERS TI1[Texas Instruments]TI1[Texas Instruments]的LOGO1391.1 Kbytes共21页SN74LS540DWG4的PDF下载地址无
SN74LS540DWROCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS TI[Texas Instruments]TI[Texas Instruments]的LOGO597.71 Kbytes共15页SN74LS540DWR的PDF下载地址SN54ALS541,SN54LS240,SN54BCT2240,SN54BCT2244,SN54ALS244C,SN54HCT240,SN54HCT244,SN54ABT2240A,SN54ALS244B,SN54ABT2241
SN74LS540DWROCTAL BUFFERS AND LINE DRIVERS TI1[Texas Instruments]TI1[Texas Instruments]的LOGO1391.1 Kbytes共21页SN74LS540DWR的PDF下载地址无
SN74LS540DWRE4OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS TI[Texas Instruments]TI[Texas Instruments]的LOGO597.71 Kbytes共15页SN74LS540DWRE4的PDF下载地址SN54ALS541,SN54LS240,SN54BCT2240,SN54BCT2244,SN54ALS244C,SN54HCT240,SN54HCT244,SN54ABT2240A,SN54ALS244B,SN54ABT2241
SN74LS540DW的全球分销商及价格
销售商型号制造商功能描述价格
元器件资料网-Arrow(艾睿)的LOGO
Arrow(艾睿)		SN74LS540DWTexas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC) 半导体 缓冲器和线路驱动器 Octal w/Tri-St Out1+:￥12.44
10+:￥9.97
100+:￥8
500+:￥6.32
1000+:￥5.8
2500+:￥5.29
5000+:￥5.1999
10000+:￥51+:￥9.94
10+:￥7.94
100+:￥6.38
500+:￥5.92
1000+:￥5.92
2500+:￥5.44
5000+:￥5.38
10000+:￥5.1801
25000+:￥5.02991+:￥12.21
10+:￥9.78
100+:￥7.8599
500+:￥6.1999
1000+:￥5.7
2500+:￥5.1999
5000+:￥5.09
10000+:￥4.915+:￥9.36
25+:￥8.49
100+:￥8.21
500+:￥6.87
1000+:￥5.6899
2000+:￥5.0225+:￥13.2199
100+:￥11.46
250+:￥10.21
500+:￥9.421+:￥6.14
元器件资料网-Arrow(艾睿)的LOGO
Arrow(艾睿)		SN74LS540DWG4Texas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC)475+:￥8475+:￥6.38
500+:￥5.92
1000+:￥5.92
2500+:￥5.44
5000+:￥5.38
10000+:￥5.1801
25000+:￥5.029925+:￥8.49
100+:￥8.21
500+:￥6.87
1000+:￥5.6899
2000+:￥5.021+:￥6.14
元器件资料网-Arrow(艾睿)的LOGO
Arrow(艾睿)		SN74LS540DWRTexas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC)2000+:￥4.441+:￥8.78
10+:￥7.07
100+:￥5.44
500+:￥4.8
1000+:￥4.7
2000+:￥4.31
10000+:￥4.1999
24000+:￥4.14
50000+:￥4.142000+:￥3.951+:￥5.12
元器件资料网-Avnet Express的LOGO
Avnet Express		SN74LS540DWTexas Instruments- Rail/Tube100 : $1.0108
元器件资料网-Avnet Express的LOGO
Avnet Express		SN74LS540DWRTexas InstrumentsOCTAL BUFFER/LINE DRIVER - Tape and Reel2,000 : $0.6463
9,999 : $0.6162
19,999 : $0.6093
元器件资料网-Bristol Electronics的LOGO
Bristol Electronics		SN74LS540DWTexas Instruments价格未公开
元器件资料网-Chip1Stop的LOGO
Chip1Stop		SN74LS540DWTexas InstrumentsBuffer/Line Driver 8-CH Inverting 3-ST Bipolar 20-Pin SOIC Tube
RoHS : Compliant		25 : $0.918
元器件资料网-ChipOneStop的LOGO
ChipOneStop		SN74LS540DWTexas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC) 半导体 缓冲器和线路驱动器 Octal w/Tri-St Out1+:￥12.44
10+:￥9.97
100+:￥8
500+:￥6.32
1000+:￥5.8
2500+:￥5.29
5000+:￥5.1999
10000+:￥51+:￥9.94
10+:￥7.94
100+:￥6.38
500+:￥5.92
1000+:￥5.92
2500+:￥5.44
5000+:￥5.38
10000+:￥5.1801
25000+:￥5.02991+:￥12.21
10+:￥9.78
100+:￥7.8599
500+:￥6.1999
1000+:￥5.7
2500+:￥5.1999
5000+:￥5.09
10000+:￥4.915+:￥9.36
25+:￥8.49
100+:￥8.21
500+:￥6.87
1000+:￥5.6899
2000+:￥5.02
元器件资料网-ChipOneStop的LOGO
ChipOneStop		SN74LS540DWG4Texas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC)475+:￥8475+:￥6.38
500+:￥5.92
1000+:￥5.92
2500+:￥5.44
5000+:￥5.38
10000+:￥5.1801
25000+:￥5.029925+:￥8.49
100+:￥8.21
500+:￥6.87
1000+:￥5.6899
2000+:￥5.02
元器件资料网-ChipOneStop的LOGO
ChipOneStop		SN74LS540DWRTexas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC)2000+:￥4.441+:￥8.78
10+:￥7.07
100+:￥5.44
500+:￥4.8
1000+:￥4.7
2000+:￥4.31
10000+:￥4.1999
24000+:￥4.14
50000+:￥4.142000+:￥3.95
元器件资料网-Digi-Key 得捷电子的LOGO
Digi-Key 得捷电子		SN74LS540DWTexas InstrumentsIC BUFFER INVERT 5.25V 20SOIC$1.76000
元器件资料网-Digi-Key 得捷电子的LOGO
Digi-Key 得捷电子		SN74LS540DWTexas InstrumentsIC INVERTER 8-INPUT 20SOIC1,000 : $0.7975
500 : $0.9625
100 : $1.1715
10 : $1.458
1 : $1.62
元器件资料网-Digi-Key 得捷电子的LOGO
Digi-Key 得捷电子		SN74LS540DWTexas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC) 半导体 缓冲器和线路驱动器 Octal w/Tri-St Out1+:￥12.44
10+:￥9.97
100+:￥8
500+:￥6.32
1000+:￥5.8
2500+:￥5.29
5000+:￥5.1999
10000+:￥5
元器件资料网-Digi-Key 得捷电子的LOGO
Digi-Key 得捷电子		SN74LS540DWG4Texas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC)475+:￥8
元器件资料网-Digi-Key 得捷电子的LOGO
Digi-Key 得捷电子		SN74LS540DWRTexas InstrumentsIC BUFFER INVERT 5.25V 20SOIC$1.58000
元器件资料网-Digi-Key 得捷电子的LOGO
Digi-Key 得捷电子		SN74LS540DWRTexas InstrumentsIC INVERTER 8-INPUT 20SOIC2,000 : $0.6104
元器件资料网-Digi-Key 得捷电子的LOGO
Digi-Key 得捷电子		SN74LS540DWRTexas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC)2000+:￥4.44
元器件资料网-element14 Asia-Pacific的LOGO
element14 Asia-Pacific		SN74LS540DWTexas InstrumentsLOGIC BUFF/DVR TRI-ST OCTAL 20SOICW
RoHS : Compliant		1 : $11.26
10 : $9.02
100 : $7.24
500 : $5.72
1,000 : $5.25
2,500 : $4.79
5,000 : $4.76
元器件资料网-element14 e络盟电子的LOGO
element14 e络盟电子		SN74LS540DWTexas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC) 半导体 缓冲器和线路驱动器 Octal w/Tri-St Out1+:￥12.44
10+:￥9.97
100+:￥8
500+:￥6.32
1000+:￥5.8
2500+:￥5.29
5000+:￥5.1999
10000+:￥51+:￥9.94
10+:￥7.94
100+:￥6.38
500+:￥5.92
1000+:￥5.92
2500+:￥5.44
5000+:￥5.38
10000+:￥5.1801
25000+:￥5.02991+:￥12.21
10+:￥9.78
100+:￥7.8599
500+:￥6.1999
1000+:￥5.7
2500+:￥5.1999
5000+:￥5.09
10000+:￥4.91
元器件资料网-Mouser 贸泽电子的LOGO
Mouser 贸泽电子		SN74LS540DWTexas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC) 半导体 缓冲器和线路驱动器 Octal w/Tri-St Out1+:￥12.44
10+:￥9.97
100+:￥8
500+:￥6.32
1000+:￥5.8
2500+:￥5.29
5000+:￥5.1999
10000+:￥51+:￥9.94
10+:￥7.94
100+:￥6.38
500+:￥5.92
1000+:￥5.92
2500+:￥5.44
5000+:￥5.38
10000+:￥5.1801
25000+:￥5.0299
元器件资料网-Mouser 贸泽电子的LOGO
Mouser 贸泽电子		SN74LS540DWTexas Instruments缓冲器和线路驱动器 Octal w/Tri-St Out1:¥12.7577
10:¥10.8367
100:¥8.6784
500:¥7.5823
元器件资料网-Mouser 贸泽电子的LOGO
Mouser 贸泽电子		SN74LS540DWG4Texas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC)475+:￥8475+:￥6.38
500+:￥5.92
1000+:￥5.92
2500+:￥5.44
5000+:￥5.38
10000+:￥5.1801
25000+:￥5.0299
元器件资料网-Mouser 贸泽电子的LOGO
Mouser 贸泽电子		SN74LS540DWRTexas Instruments缓冲器和线路驱动器 Octal Buff/Line Drvr W/3-State Otpt1:¥11.3678
10:¥9.7632
100:¥7.458
500:¥6.5879
2,000:¥4.6104
元器件资料网-Mouser 贸泽电子的LOGO
Mouser 贸泽电子		SN74LS540DWRTexas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC)2000+:￥4.441+:￥8.78
10+:￥7.07
100+:￥5.44
500+:￥4.8
1000+:￥4.7
2000+:￥4.31
10000+:￥4.1999
24000+:￥4.14
50000+:￥4.14
元器件资料网-Rochester的LOGO
Rochester		SN74LS540DWTexas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC) 半导体 缓冲器和线路驱动器 Octal w/Tri-St Out1+:￥12.44
10+:￥9.97
100+:￥8
500+:￥6.32
1000+:￥5.8
2500+:￥5.29
5000+:￥5.1999
10000+:￥51+:￥9.94
10+:￥7.94
100+:￥6.38
500+:￥5.92
1000+:￥5.92
2500+:￥5.44
5000+:￥5.38
10000+:￥5.1801
25000+:￥5.02991+:￥12.21
10+:￥9.78
100+:￥7.8599
500+:￥6.1999
1000+:￥5.7
2500+:￥5.1999
5000+:￥5.09
10000+:￥4.915+:￥9.36
25+:￥8.49
100+:￥8.21
500+:￥6.87
1000+:￥5.6899
2000+:￥5.0225+:￥13.2199
100+:￥11.46
250+:￥10.21
500+:￥9.421+:￥6.141+:￥9.76
10+:￥8.25
100+:￥6.92
500+:￥5.661+:￥4.47
25+:￥4.43
50+:￥4.39
100+:￥4.3499
300+:￥4.3301
500+:￥4.31
1000+:￥4.27
5000+:￥4.22
元器件资料网-Rochester Electronics的LOGO
Rochester Electronics		SN74LS540DWON SemiconductorM:LS540500 : $0.42
1,000 : $0.4
元器件资料网-Rochester Electronics的LOGO
Rochester Electronics		SN74LS540DWTexas InstrumentsM:LS540500 : $0.72
1,000 : $0.69
元器件资料网-RS(欧时)的LOGO
RS(欧时)		SN74LS540DWTexas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC) 半导体 缓冲器和线路驱动器 Octal w/Tri-St Out1+:￥12.44
10+:￥9.97
100+:￥8
500+:￥6.32
1000+:￥5.8
2500+:￥5.29
5000+:￥5.1999
10000+:￥51+:￥9.94
10+:￥7.94
100+:￥6.38
500+:￥5.92
1000+:￥5.92
2500+:￥5.44
5000+:￥5.38
10000+:￥5.1801
25000+:￥5.02991+:￥12.21
10+:￥9.78
100+:￥7.8599
500+:￥6.1999
1000+:￥5.7
2500+:￥5.1999
5000+:￥5.09
10000+:￥4.915+:￥9.36
25+:￥8.49
100+:￥8.21
500+:￥6.87
1000+:￥5.6899
2000+:￥5.0225+:￥13.2199
100+:￥11.46
250+:￥10.21
500+:￥9.42
元器件资料网-Verical的LOGO
Verical		SN74LS540DWTexas InstrumentsBuffer/Line Driver 8-CH Inverting 3-ST Bipolar 20-Pin SOIC Tube$0.6875
元器件资料网-Verical的LOGO
Verical		SN74LS540DWTexas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC) 半导体 缓冲器和线路驱动器 Octal w/Tri-St Out1+:￥12.44
10+:￥9.97
100+:￥8
500+:￥6.32
1000+:￥5.8
2500+:￥5.29
5000+:￥5.1999
10000+:￥51+:￥9.94
10+:￥7.94
100+:￥6.38
500+:￥5.92
1000+:￥5.92
2500+:￥5.44
5000+:￥5.38
10000+:￥5.1801
25000+:￥5.02991+:￥12.21
10+:￥9.78
100+:￥7.8599
500+:￥6.1999
1000+:￥5.7
2500+:￥5.1999
5000+:￥5.09
10000+:￥4.915+:￥9.36
25+:￥8.49
100+:￥8.21
500+:￥6.87
1000+:￥5.6899
2000+:￥5.0225+:￥13.2199
100+:￥11.46
250+:￥10.21
500+:￥9.421+:￥6.141+:￥9.76
10+:￥8.25
100+:￥6.92
500+:￥5.66
元器件资料网-Verical的LOGO
Verical		SN74LS540DWG4Texas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC)475+:￥8475+:￥6.38
500+:￥5.92
1000+:￥5.92
2500+:￥5.44
5000+:￥5.38
10000+:￥5.1801
25000+:￥5.029925+:￥8.49
100+:￥8.21
500+:￥6.87
1000+:￥5.6899
2000+:￥5.021+:￥6.141+:￥5.61
元器件资料网-Verical的LOGO
Verical		SN74LS540DWRTexas InstrumentsBuffer/Line Driver 8-CH Inverting 3-ST Bipolar 20-Pin SOIC T/R$0.545
元器件资料网-Verical的LOGO
Verical		SN74LS540DWRTexas Instruments逻辑 - 缓冲器，驱动器，接收器，收发器 74LS 集成电路 (IC)2000+:￥4.441+:￥8.78
10+:￥7.07
100+:￥5.44
500+:￥4.8
1000+:￥4.7
2000+:￥4.31
10000+:￥4.1999
24000+:￥4.14
50000+:￥4.142000+:￥3.951+:￥5.121+:￥4.45
元器件资料网-立创商城的LOGO
立创商城		SN74LS540DWTI(德州仪器)逻辑-缓冲器,驱动器,接收器,收发器1+:￥6.56
200+:￥2.54
500+:￥2.45
1000+:￥2.41
元器件资料网-立创商城的LOGO
立创商城		SN74LS540DWRTI(德州仪器)逻辑-缓冲器,驱动器,接收器,收发器1+:￥6.05
200+:￥2.35
500+:￥2.26
1000+:￥2.22
SN74LS540DW的相关型号
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