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 …
知乎盐选 | 2.3 TTL 门电路
2.3 TTL 门电路 TTL 电路，即三极管-三极管逻辑电路，属双极型数字集成电路。按照逻辑功能的不同，TTL 门电路种类很多，本节主要介绍几种常用的电路。其中 TTL 与非门较为典型，它的电路组成、 …
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.
ttl - Is it okay to call a UART “RS-232” if it doesn’t respect voltage ...
Nov 23, 2023 · The first datasheet actually calls it "TTL-232" as a shortcut to explain "232 timing on TTL voltage levels." It then goes on to say it's available in 3.3V or 5V models. I couldn't get the datasheet …
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 …
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 …
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 …
USART, UART, RS232, USB, SPI, I2C, TTL, etc. what are all of these and ...
Aug 14, 2012 · TTL mean Transistor-Transistor-Logic and has its level for logical zero near 0V and for logical one near 5V. Often any 5V logic is called TTL, although most circuits nowadays are built as …
TTL和CMOS电路输入端电压多少可认为高电平（低电平）？
TTL指的是由晶极管构成的 数字芯片。这类芯片功耗高，通常的TTL电平是5V。 CMOS是指由 MOS管 构成是数字芯片。这类芯片功耗低。 电平 太多了有5V，3.3V，1.8V，1.2V。 你问的高低电平的阈值 …