TTL电平信号规定，+5V等价于逻辑“1”，0V等价于逻辑“0”(采用二进制来表示数据时)。这样的数据通信及电平规定方式，被称做TTL（晶体管-晶体管逻辑电平）信号系统。这是计算机处理器控制的设备内部各部分之间通信的标准技术。
These BCD-to-decimal decoders/drivers consist of eightinverters and ten, four-input NAND gate
These data selectors/multiplexers contain full on-chipdecoding to select the desired data sou
This device contains four independent set-reset type flipflopswith one Q output each.
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This device contains six independent gates each of whichperforms the logic INVERT function. T
This device contains two independent combinations ofgates, each of which perform the logic AN
These universal 9-bit (8 data bits plus 1 parity bit) paritygenerators/checkers feature odd/e
These monolithic TTL hex buffers/drivers feature high-voltage open-collector outputs for interfacing