74C922中文資料美國國家半導(dǎo)體數(shù)據(jù)手冊PDF規(guī)格書
74C922規(guī)格書詳情
General Description
These CMOS key encoders provide all the necessary logic to fully encode an array of SPST switches. The keyboard scan can be implemented by either an external clock or external capacitor. These encoders also have on-chip pullup devices which permit switches with up to 50 kXon resistance to be used. No diodes in the switch array are needed to eliminate ghost switches.
Features
50 kXmaximum switch on resistance
On or off chip clock
On-chip row pull-up devices
2 key roll-over
Keybounce elimination with single capacitor
Last key register at outputs
TRI-STATE outpust LPTTL compatible
Wide supply range 3V to 15V
Low power consumption
產(chǎn)品屬性
- 型號：
74C922
- 制造商：
NSC
- 制造商全稱：
National Semiconductor
- 功能描述：
16, 20-Key Encoder
| 供應(yīng)商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
FCS |
23+ |
NA/ |
88888 |
優(yōu)勢代理渠道,原裝正品,可全系列訂貨開增值稅票 |
詢價(jià) | ||
HGSEMI(華冠) |
21+ |
SOP-20 |
4750 |
中國航天工業(yè)部戰(zhàn)略合作伙伴行業(yè)領(lǐng)導(dǎo)者 |
詢價(jià) | ||
FSC |
20+ |
DIP |
26580 |
全新原裝長期特價(jià)銷售 |
詢價(jià) | ||
FSC |
23+ |
DIP-18 |
3200 |
全新原裝、誠信經(jīng)營、公司現(xiàn)貨銷售 |
詢價(jià) | ||
HGSEMI(華冠) |
22+ |
SOP-20 |
9852 |
只做原裝正品現(xiàn)貨,或訂貨假一賠十! |
詢價(jià) | ||
FAIRCHILD/仙童 |
23+ |
DIP |
6000 |
專注配單,只做原裝進(jìn)口現(xiàn)貨 |
詢價(jià) | ||
FAIRCHILD |
23+ |
NA |
19960 |
只做進(jìn)口原裝,終端工廠免費(fèi)送樣 |
詢價(jià) | ||
NS |
22+ |
DIP |
2500 |
全新原裝品牌專營 |
詢價(jià) | ||
HGSEMI華冠 |
23+ |
SOP-20 |
22820 |
原裝正品，支持實(shí)單 |
詢價(jià) | ||
FSC原裝特價(jià)出售 |
24+ |
DIP-18 |
35200 |
一級代理/放心采購 |
詢價(jià) |
