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 |
2016+ |
SOP14 |
6523 |
只做进口原装现货!假一赔十! |
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 | ||
HITACHI |
2020+ |
SOP145 |
2197 |
百分百原装正品 真实公司现货库存 本公司只做原装 可 |
询价 | ||
RENESAS |
23+ |
NA |
575 |
专做原装正品,假一罚百! |
询价 | ||
HIT |
96.99+ |
SOP-14 |
40 |
原装现货海量库存欢迎咨询 |
询价 | ||
RENESAS |
22+ |
SOP14 |
8000 |
原装正品支持实单 |
询价 | ||
RENESAS/瑞萨 |
22+ |
SOP |
9000 |
原装正品 |
询价 | ||
SOP |
100 |
询价 | |||||
HIT |
98+ |
SOP14 |
60 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | ||
HITACHI/日立 |
21+ROHS |
DIP |
10000 |
原厂授权一级代理,专业海外优势订货,价格优势、品种 |
询价 |