什么叫TTL电平？ - 知乎
TTL电平信号被利用的最多是因为通常数据表示采用二进制规定，+5V等价于逻辑"1"，0V等价于逻辑"0"，这就被称做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 …
How does TTL serial work? - Electrical Engineering Stack Exchange
Point of terminology: "TTL serial" is a severely over-broad term, " (point-to-point) asynchronous serial (at TTL levels)" seems to be what you're asking about. (Though that's still probably lacking, but at least …
uart、串口、COM口、USB口，ttl，rs232,rs485这几个到底是啥关系？
1. TTL电平 TTL指双极型三极管逻辑电路（transistor transistor logic），这种信号0对应0V，1对应3.3V或5V，与单片机、MCU、SOC的IO电平兼容。 不过实际也不一定是TTL电平，因为现在大部分数字逻 …
digital logic - What is meant by TTL in this context? - Electrical ...
Jun 22, 2023 · TTL requires that logic 1 input must be at least 2V, and TTL drivers are designed to guarantee that. That is far short of what this driver requires to register as logic 1.
问一下大家什么是USB转TTL？ - 知乎
Aug 15, 2020 · USB转TTL是一种 串口通信 转换器，它可以将USB接口转换为TTL串口通信接口。 TTL串口通信是一种常见的数字通信方式，常用于单片机、传感器等设备之间的数据传输。 通过USB …
既然IP数据包有TTL跳数限制，那它是如何实现远距离（横跨大半个地 …
既然IP数据包有TTL跳数限制，那它是如何实现远距离（横跨大半个地球）通信的？ 首先对问题进行补充解释一下:IP数据包有TTL跳数限制，跳数变为零时数据包就被丢弃。 那么问题来了，当需要远距离 …
When is it appropriate to mix 74LSxx components with original TTL 74xx?
Dec 10, 2023 · The TTL-based 74 series have logic levels concentrated around the low end of the supply voltage, while the CMOS ones (other than the xxT CMOS series) have logic levels spread …
digital logic - Output voltage level of TTL gate - Electrical ...
Jun 2, 2023 · The output voltage level of the TTL logic family is from 0 to 0.4 volts (LOW) or 2.4 to 5 volts (HIGH). Suppose we have a TTL inverter with a square wave of 5 volt amplitude as input (0 volt …
1×9封装TTL光模块有哪些优势？ - 知乎
优异静态功耗： 待机状态下，TTL 光模块静态电流通常 <10mA，比 PECL 光模块（20-50mA）降低 50% 以上，尤其适合电池供电设备，如物联网传感器和便携式仪器。 宽范围低电压工作： 支持 3.3V 或 …
rs232 - What is the difference between RS-232 and TTL UART ...
Dec 11, 2016 · A TTL UART will output (and input) only TTL levels, essentially 0 bit = 0V and 1 bit = 5V. And many modern-day gadgets (Arduino, et.al.) simply use TTL voltage levels for serial communication.