HD74HC149中文资料PDF规格书
HD74HC149规格书详情
Description
The HD74HC149 is priority encoder which has 8 input lines (0 - 7) and 8 output lies (Y0 - Y7).
It is the logical combination of a HD74HC148 8-3 line priority encoder driving a HD74HC138 3-8 line decoder.
Only one request output can be low at a time. The output that is low is dependent on the highest priority request that is low. The order of priority is 7 highest and 0 lowest.
Features
• High Speed Operation: tpd (0 - 7 to Y) = 16 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)
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
RENESAS/瑞萨 |
/ROHS.original |
原封 |
22102 |
电子元件,供应 -正纳电子/ 元器件IC -MOS -MCU. |
询价 | ||
RENESAS |
2023+ |
SOP14 |
700000 |
柒号芯城跟原厂的距离只有0.07公分 |
询价 | ||
HITACHI/日立 |
22+ |
SOP-14 |
9600 |
原装现货,优势供应,支持实单! |
询价 | ||
HIT |
21+ |
SOP14 |
50000 |
全新原装正品现货,支持订货 |
询价 | ||
HITACHI |
2023+ |
DIP-14 |
50000 |
原装现货 |
询价 | ||
RENESAS |
2016+ |
SOP14 |
6523 |
只做进口原装现货!假一赔十! |
询价 | ||
23+ |
N/A |
85300 |
正品授权货源可靠 |
询价 | |||
RENESAS/瑞萨 |
23+ |
NA/ |
55 |
优势代理渠道,原装正品,可全系列订货开增值税票 |
询价 | ||
RENESAS/瑞萨 |
22+ |
SOP |
9000 |
原装正品 |
询价 | ||
RENESAS |
2022 |
SOP |
5500 |
原厂原装正品,价格超越代理 |
询价 |