SN54LS490中文资料PDF规格书
SN54LS490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) |
22+ |
TSSOP |
8000 |
询价 | |||
TI |
92+ |
DIP |
31 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | ||
TI |
2223+ |
DIP |
9453 |
一级代理/分销渠道价格优势 十年芯程一路只做原装正品 |
询价 | ||
TI |
DIP |
699839 |
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 | |||
MOTOROLA/摩托罗拉 |
QQ咨询 |
DIP-16 |
826 |
全新原装 研究所指定供货商 |
询价 | ||
TI(德州仪器) |
23+ |
N/A |
589610 |
新到现货 原厂一手货源 价格秒杀代理! |
询价 | ||
TI |
CDIP|14 |
70230 |
16余年资质 绝对原盒原盘 更多数量 |
询价 | |||
TI/TEXAS |
23+ |
DIP陶瓷 |
8931 |
询价 | |||
TI(德州仪器) |
2021+ |
8000 |
原装现货，欢迎询价 |
询价 | |||
TI |
23+ |
DIP陶瓷 |
5000 |
原装正品,假一罚十 |
询价 |
