四三态缓冲器 Quad 3-STATE Buffer
General Description
This device contains four independent gates each of which performs a non-inverting buffer function. The outputs have the 3-STATE feature. When enabled, the outputs exhibit the low impedance characteristics of a standard LS output with additional drive capability to permit the driving of bus lines without external resistors. When disabled, both the output transistors are turned OFF presenting a high-imped ance state to the bus line. Thus the output will act neither
as a significant load nor as a driver. To minimize the possibility that two outputs will attempt to take a common bus to opposite logic levels, the disable time is shorter than the enable time of the outputs.
| 型号 | 品牌 | 下载 |
|---|---|---|
| DM74LS126AN | 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 |