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SN74LS490D中文资料摩托罗拉数据手册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+ |
SOP5.2 |
8215 |
原厂原装 |
询价 | ||
TI/德州仪器 |
21+ |
DIP |
1709 |
询价 | |||
TI/德州仪器 |
22+ |
DIP |
20000 |
原装现货,实单支持 |
询价 | ||
MOTOROLA |
22+ |
DIP16 |
5000 |
原装现货库存.价格优势 |
询价 | ||
TI/德州仪器 |
22+ |
SOP-14 |
3000 |
原装正品,支持实单 |
询价 | ||
MMI |
/ |
DIP |
19 |
询价 | |||
24+ |
DIP16 |
1 |
自己现货 |
询价 | |||
MOTOROL |
2020+ |
DIP16 |
8 |
百分百原装正品 真实公司现货库存 本公司只做原装 可 |
询价 | ||
TI/德州仪器 |
23+ |
DIP |
11200 |
原厂授权一级代理、全球订货优势渠道、可提供一站式BO |
询价 | ||
24+ |
N/A |
64000 |
一级代理-主营优势-实惠价格-不悔选择 |
询价 |
