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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| SJ 20289-1993 |
detail specification for JT54LS390, JT54LS393, JT54LS490 types counters of LS-TTL semiconductor integrated circuits 半导体集成电路 jt54ls390、jt54ls393、jt54ls490型ls-ttl计数器详细规范 |
China Electronics
Standards JT54LS390, |
 English PDF |
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