74191中文資料仙童半導(dǎo)體數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)
替換型號(hào)
74191規(guī)格書(shū)詳情
General Description
The DM74LS191 circuit is a synchronous, reversible, up/down counter. Synchronous operation is provided by having all flip-flops clocked simultaneously, so that the outputs change simultaneously when so instructed by the steering logic. This mode of operation eliminates the output counting spikes normally associated with asynchronous (ripple clock) counters.
Features
■ Counts binary
■ Single down/up count control line
■ Count enable control input
■ Ripple clock output for cascading
■ Asynchronously presettable with load control
■ Parallel outputs
■ Cascadable for n-bit applications
■ Average propagation delay 20 ns
■ Typical clock frequency 25 MHz
■ Typical power dissipation 100 mW
產(chǎn)品屬性
- 型號(hào)：
74191
- 制造商：
NSC
- 制造商全稱：
National Semiconductor
- 功能描述：
Synchronous Up/Down 4-Bit Binary Counter with Mode Control
| 供應(yīng)商 | 型號(hào) | 品牌 | 批號(hào) | 封裝 | 庫(kù)存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
74192PC |
2 |
2 |
詢價(jià) | ||||
FSC |
21+ |
DIP |
65 |
原裝現(xiàn)貨假一賠十 |
詢價(jià) | ||
MOL |
23+ |
NA |
111 |
專做原裝正品,假一罰百! |
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) | ||
ITT |
QQ咨詢 |
CDIP |
827 |
全新原裝 研究所指定供貨商 |
詢價(jià) | ||
TE/泰科 |
2420+ |
/ |
640297 |
一級(jí)代理,原裝正品! |
詢價(jià) | ||
FAIRCHILD/仙童 |
23+ |
NA/ |
65 |
優(yōu)勢(shì)代理渠道,原裝正品,可全系列訂貨開(kāi)增值稅票 |
詢價(jià) | ||
SIGNETI |
2016+ |
DIP |
6526 |
只做原裝正品!假一賠十!只要有上一定有貨的! |
詢價(jià) | ||
onsemi(安森美) |
23+ |
PDIP16 |
7350 |
現(xiàn)貨供應(yīng),當(dāng)天可交貨!免費(fèi)送樣,原廠技術(shù)支持!!! |
詢價(jià) | ||
FAIRCHILD |
新 |
192 |
全新原裝 貨期兩周 |
詢價(jià) |
