74C922中文資料美國(guó)國(guó)家半導(dǎo)體數(shù)據(jù)手冊(cè)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(hào)：
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(hào) | 品牌 | 批號(hào) | 封裝 | 庫存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
HGSEMI(華冠) |
21+ |
SOP-20 |
4750 |
中國(guó)航天工業(yè)部戰(zhàn)略合作伙伴行業(yè)領(lǐng)導(dǎo)者 |
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) | ||
FSC原裝特價(jià) |
24+ |
DIP-18 |
3500 |
原裝現(xiàn)貨,可開13%稅票 |
詢價(jià) | ||
FSC |
21+ |
DIP |
26580 |
全新原裝長(zhǎng)期特價(jià)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) | ||
FSC原裝特價(jià)出售 |
22+23+ |
DIP-18 |
18078 |
絕對(duì)原裝正品全新進(jìn)口深圳現(xiàn)貨 |
詢價(jià) | ||
FSC原裝特價(jià)出售 |
24+ |
DIP-18 |
35200 |
一級(jí)代理/放心采購(gòu) |
詢價(jià) | ||
FSC |
20+ |
DIP |
26580 |
全新原裝長(zhǎng)期特價(jià)銷售 |
詢價(jià) | ||
FCS |
24+ |
sop |
499987 |
免費(fèi)送樣原盒原包現(xiàn)貨一手渠道聯(lián)系 |
詢價(jià) | ||
FSC |
23+ |
DIP-18 |
3200 |
全新原裝、誠(chéng)信經(jīng)營(yíng)、公司現(xiàn)貨銷售 |
詢價(jià) |
