74LS中文資料安森美半導(dǎo)體數(shù)據(jù)手冊(cè)PDF規(guī)格書(shū)
| 廠商型號(hào) |
74LS |
| 功能描述 | SYNCHRONOUS 4-BIT UP/DOWN COUNTER |
| 文件大小 |
74.2 Kbytes |
| 頁(yè)面數(shù)量 |
4 頁(yè) |
| 生產(chǎn)廠商 | ONSEMI |
| 中文名稱 | 安森美半導(dǎo)體 |
| 網(wǎng)址 | |
| 數(shù)據(jù)手冊(cè) | |
| 更新時(shí)間 | 2025-9-1 11:48:00 |
| 人工找貨 | 74LS價(jià)格和庫(kù)存，歡迎聯(lián)系客服免費(fèi)人工找貨 |
74LS規(guī)格書(shū)詳情
SYNCHRONOUS 4-BIT UP/DOWN COUNTER
The SN54 /74LS669 is a synchronous 4-bit up/down counter. The LS669 is a 4-bit binary counter. For high speed counting applications, this presettable counter features an internal carry lookahead for cascading purposes. By clocking all flip-flops simultaneously so the outputs change coincident with each other (when instructed to do so by the count enable inputs and internal gating) synchronous operation is provided. This helps to eliminate output counting spikes, normally associated with asynchronous (ripple-clock) count ers. The four master-slave flip-flops are triggered on the rising (positive-going) edge of the clock waveform by a buffered clock input.
? Programmable Look-Ahead Up/Down Binary/Decade Counters
? Fully Synchronous Operation for Counting and Programming
? Internal Look-Ahead for Fast Counting
? Carry Output for n-Bit Cascading
? Fully Independent Clock Circuit
? Buffered Outputs
產(chǎn)品屬性
- 型號(hào)：
74LS
- 制造商：
ONSEMI
- 制造商全稱：
ON Semiconductor
- 功能描述：
SYNCHRONOUS 4-BIT UP/DOWN COUNTER
| 供應(yīng)商 | 型號(hào) | 品牌 | 批號(hào) | 封裝 | 庫(kù)存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
NSC |
25+ |
SOP |
2987 |
只售原裝自家現(xiàn)貨!誠(chéng)信經(jīng)營(yíng)!歡迎來(lái)電! |
詢價(jià) | ||
TI |
23+ |
SOP-20/ |
8650 |
受權(quán)代理!全新原裝現(xiàn)貨特價(jià)熱賣! |
詢價(jià) | ||
HITACHI |
12+ |
DIP |
10 |
進(jìn)口原裝公司現(xiàn)貨 |
詢價(jià) | ||
TI |
20+ |
SOP14P |
36800 |
原裝優(yōu)勢(shì)主營(yíng)型號(hào)-可開(kāi)原型號(hào)增稅票 |
詢價(jià) | ||
HITACHI/日立 |
23+ |
SOP |
3000 |
一級(jí)代理原廠VIP渠道,專注軍工、汽車、醫(yī)療、工業(yè)、 |
詢價(jià) | ||
ON |
三年內(nèi) |
1983 |
只做原裝正品 |
詢價(jià) | |||
FSC |
15+ |
SOP-14 |
11560 |
全新原裝,現(xiàn)貨庫(kù)存,長(zhǎng)期供應(yīng) |
詢價(jià) | ||
MITSUBISH原裝正品價(jià)格 |
23+ |
DIP16 |
20410 |
專注原裝正品現(xiàn)貨特價(jià)中量大可定 |
詢價(jià) | ||
FAI |
25+ |
SOP |
908 |
原裝現(xiàn)貨熱賣中,提供一站式真芯服務(wù) |
詢價(jià) | ||
TI/德州儀器 |
23+ |
DIP |
50000 |
全新原裝正品現(xiàn)貨,支持訂貨 |
詢價(jià) |
