销售商 | 型号 | 制造商 | 功能描述 | 价格 |
 Arrow(艾睿) | SN74LS21NSR | Texas Instruments | 逻辑 - 栅极和逆变器 74LS 集成电路 (IC) | 1+:¥4.41 10+:¥3.54 100+:¥2.64 500+:¥2.22 1000+:¥2.05 2000+:¥1.89 10000+:¥1.87 24000+:¥1.8 50000+:¥1.731+:¥2.45 |
 Avnet Express | SN74LS21NSR | Texas Instruments | - Tape and Reel | 2,000 : $0.351
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 Digi-Key 得捷电子 | SN74LS21NSR | Texas Instruments | IC GATE AND 2CH 4-INP 14-SO | 10 : $0.649 1 : $0.74
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 Digi-Key 得捷电子 | SN74LS21NSR | Texas Instruments | IC GATE AND 2CH 4-INP 14SOP | Active |
 Mouser 贸泽电子 | SN74LS21NSR | Texas Instruments | 逻辑门 Dual 4-input Positive-AND Gates | 1:¥5.6048 10:¥4.6443 100:¥2.9945 1,000:¥2.3956 2,000:¥2.1696
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 Mouser 贸泽电子 | SN74LS21NSR | Texas Instruments | 逻辑 - 栅极和逆变器 74LS 集成电路 (IC) | 1+:¥4.41 10+:¥3.54 100+:¥2.64 500+:¥2.22 1000+:¥2.05 2000+:¥1.89 10000+:¥1.87 24000+:¥1.8 50000+:¥1.73 |
 Rochester | SN74LS21NSR | Texas Instruments | 逻辑 - 栅极和逆变器 74LS 集成电路 (IC) | 1+:¥4.41 10+:¥3.54 100+:¥2.64 500+:¥2.22 1000+:¥2.05 2000+:¥1.89 10000+:¥1.87 24000+:¥1.8 50000+:¥1.731+:¥2.451+:¥1.55 25+:¥1.53 50+:¥1.5199 100+:¥1.5001 300+:¥1.49 500+:¥1.49 1000+:¥1.47 5000+:¥1.46 |
 Rochester Electronics | SN74LS21NSR | Texas Instruments | N/A | 500 : $0.25 1,000 : $0.24
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 Rochester Electronics | SN74LS21NSRE4 | Rochester Electronics LLC | AND SN74LS21NSRE4 | 价格未公开 |
 Verical | SN74LS21NSR | Texas Instruments | AND Gate 2-Element 4-IN Bipolar 14-Pin SOP T/R | $0.2729
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