四S- R锁存 Quad S-R Latch
General Description
The DM74LS279 consists of four individual and independent Set-Reset Latches with active low inputs. Two of the four latches have an additional Sinput ANDed with the primary Sinput. A LOW on any Sinput while the Rinput is HIGH will be stored in the latch and appear on the corresponding Q output as a HIGH. A LOW on the Rinput while the Sinput is HIGH will clear the Q output to a LOW. Simultaneous transition of the Rand Sinputs from LOW-toHIGH will cause the Q output to be indeterminate. Both inputs are voltage level triggered and are not affected by
transition time of the input data.
| 型号 | 品牌 | 下载 |
|---|---|---|
| DM74LS279M | Fairchild 飞兆/仙童 | 下载 |
| DM74LVX125MX | Fairchild 飞兆/仙童 | 下载 |
| DM74LS257BMX | National Semiconductor 美国国家半导体 | 下载 |
| DM74ALS244AWX | National Semiconductor 美国国家半导体 | 下载 |
| DM74ACT157SCX | Fairchild 飞兆/仙童 | 下载 |
| DM74VHC08MTCX | Fairchild 飞兆/仙童 | 下载 |
| DM74LS05M | Fairchild 飞兆/仙童 | 下载 |
| DM74ACT175MX | National Semiconductor 美国国家半导体 | 下载 |
| DM74ALS32MX | National Semiconductor 美国国家半导体 | 下载 |
| DM74ALS240ASJX | National Semiconductor 美国国家半导体 | 下载 |
| DM74LS123MX | Fairchild 飞兆/仙童 | 下载 |