HD74HC490中文資料日立數(shù)據(jù)手冊PDF規(guī)格書
HD74HC490規(guī)格書詳情
Description
This circuit contains eight master-slave flip-flops and additional gating to implement two individual 4-bit decade counters. Each decade counter has individual clock, clear and set-to-9 inputs. BCD count sequences of any length up to divide-by-100 may be implemented with a single HD74HC490. Buffering on each output is provided to ensure that suceptibility to collector communication is reduced significantly. The counters have paralle outputs from each counter state so that submultiples of the input count frequency are available for system timing signals.
Features
? High Speed Operation: tpd (Clock to QA) = 13 ns typ (CL = 50 pF)
? High Output Current: Fanout of 10 LSTTL Loads
? Wide Operating Voltage: VCC = 2 to 6 V
? Low Input Current: 1 μA max
? Low Quiescent Supply Current: ICC (static) = 4 μA max (Ta = 25°C)
| 供應(yīng)商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
|---|---|---|---|---|---|---|---|
HIT |
96+ |
SOP-14 |
100 |
原裝現(xiàn)貨海量庫存歡迎咨詢 |
詢價 | ||
HITACHI/日立 |
03+ |
SOP20 |
92 |
就找我吧!--邀您體驗愉快問購元件! |
詢價 | ||
HIT |
23+ |
SOP20 |
5000 |
專注配單,只做原裝進口現(xiàn)貨 |
詢價 | ||
HIT |
SOP14 |
68900 |
原包原標(biāo)簽100%進口原裝常備現(xiàn)貨! |
詢價 | |||
RENESAS |
11+ |
SOP5.2 |
611 |
原裝 |
詢價 | ||
HITACHI/日立 |
24+ |
SOP14 |
6880 |
只做原裝，公司現(xiàn)貨庫存 |
詢價 | ||
HIT |
24+ |
SOP |
1068 |
原裝現(xiàn)貨假一罰十 |
詢價 | ||
HIT |
20+ |
SOP14 |
2960 |
誠信交易大量庫存現(xiàn)貨 |
詢價 | ||
HIT |
2204+ |
SOP14 |
10785 |
一級代理/分銷渠道價格優(yōu)勢 十年芯程一路只做原裝正品 |
詢價 | ||
HIT |
23+ |
原裝正品現(xiàn)貨 |
10000 |
SOP14 |
詢價 |
