| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
|---|
| 1 | HD74HC490 | Dual 4-bit Decade Counters | 45K |
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| 2 | HD74HC490 | Dual 4-bit Decade Counters | 164K |
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| 3 | HD74HC490FP | COUNTER|UP|DECADE|HC-CMOS|SOP|16PIN|PLASTIC | 43K |
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| 4 | HD74HC490P | COUNTER|UP|DECADE|HC-CMOS|DIP|16PIN|PLASTIC | 43K |
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| 5 | HD74HC490RP | COUNTER|UP|DECADE|HC-CMOS|SOP|16PIN|PLASTIC | 43K |
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