74HC677中文资料PDF规格书
74HC677规格书详情
Description
The HD74HC677 address comparator simplifies addressing of memory boards and/or other peripheral devices. The four P inputs are normally hard wired with a preprogrammed address. An internal decoder determines what input infomation applied to the 16 A inputs must be low or high to cause a low state at the output (Y). For example, a positive-logic bit combination of 0111 (decimal 7) at the P input determines that inputs A1 through A7 must be low and that inputs A8 through A16 must be high to cause the output to go low. Equality of the address applied at the A inputs to the preprogrammed address is indicated by the output being low.
The HD74HC677 features an enable input (G). When G is low, the device is enabled. When G is high, the device is disabled and the output is high regardless of the A and P inputs.
Features
• High Speed Operation: tpd(A to Y) = 17 ns typ (CL= 50 pF)
• High Output Current: Fanout of 10 LSTTL Loads
• Wide Operating Voltage: VCC= 2 to 6V
• Low Input Current: 1µA max
• Low Quiescent Supply Current: ICC(static) = 4µA max (Ta = 25°C)
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
2005 |
SOP |
142 |
询价 | ||||
TI |
2022+ |
SOP |
7600 |
原厂原装,假一罚十 |
询价 | ||
23+ |
N/A |
49500 |
正品授权货源可靠 |
询价 | |||
TI |
2021+ |
SOP |
7600 |
原装现货,欢迎询价 |
询价 | ||
TI |
21+ |
SOP |
13880 |
公司只售原装,支持实单 |
询价 | ||
RENESAS(瑞萨)/IDT |
21+ |
- |
1000 |
询价 | |||
TI |
21+ |
SOP |
10000 |
原装,品质保证,请来电咨询 |
询价 | ||
REI |
16+ |
原厂封装 |
10000 |
全新原装正品,代理优势渠道供应,欢迎来电咨询 |
询价 | ||
ST |
22+ |
6 |
16900 |
正规渠道,只有原装! |
询价 | ||
TI |
21+ |
SOP |
13880 |
公司只售原装 支持实单 |
询价 |