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SN74LS490D中文资料PDF规格书
SN74LS490D规格书详情
The SN54/74LS490 contains a pair of high-speed 4-stage ripple counters. Each half of the SN54/74LS490 has individual Clock, Master Reset and Master Set (Preset 9) inputs. Each section counts in the 8, 4, 2, 1 BCD code.
• Dual Version of SN54/74LS490
• Individual Asynchronous Clear and Preset to 9 for Each Counter
• Count Frequency — Typically 65 MHz
• Input Clamp Diodes Limit High-Speed Termination Effects
| 供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
|---|---|---|---|---|---|---|---|
TI/德州仪器 |
23+ |
NA/ |
3748 |
原厂直销,现货供应,账期支持! |
询价 | ||
TI/德州仪器 |
22+ |
DIP |
20000 |
原装现货,实单支持 |
询价 | ||
TI/德州仪器 |
DIP |
90000 |
集团化配单-有更多数量-免费送样-原包装正品现货-正规 |
询价 | |||
TI/德州仪器 |
22+ |
SOP-14 |
3000 |
原装正品,支持实单 |
询价 | ||
TI |
26 |
公司优势库存 热卖中!! |
询价 | ||||
TI-德州仪器 |
24+25+/26+27+ |
逻辑计算IC |
2368 |
一一有问必回一特殊渠道一有长期订货一备货HK仓库 |
询价 | ||
MOTOROLA |
22+ |
DIP16 |
5000 |
原装现货库存.价格优势 |
询价 | ||
DIP16 |
1 |
自己现货 |
询价 | ||||
TI |
DIP |
9500 |
一级代理 原装正品假一罚十价格优势长期供货 |
询价 | |||
MMI |
23+ |
QFP100 |
5000 |
原装正品,假一罚十 |
询价 |
