What is a TTL cable?

TTL cable is a cable used for serial communication, which uses TTL (Transistor-Transistor Logic) level standard for data transmission. Here are some details of TTL cable:

Features

Voltage level:

High level (Logic 1): Usually 3.3V or 5V.
Low level (Logic 0): Usually 0V.

Interface form:
Usually includes GND (ground), TXD (transmit data), RXD (receive data), and sometimes VCC (power) pins.

Components

Connector:

One end is usually a USB interface, and the other end is a bare wire or a specific interface (such as a 2.54mm pitch DuPont head).

Wire:

There are multiple wires inside the wire, each wire is used for specific signal transmission, usually including power line, ground line, transmit data line, and receive data line.

Application

Embedded system:

Commonly used to connect development boards (such as Arduino, Raspberry Pi), sensors, and other devices that require low voltage logic levels.

Debugging and programming:

Used to debug embedded systems and microcontrollers, upload firmware and communicate data.

Communication protocol conversion:

It can be used to convert USB signals into TTL level signals, which facilitates communication between computers and embedded devices.

Typical chips

TTL cables usually contain a chip that converts USB signals into TTL level signals. Common chips are:

FTDI FT232RL:

High quality and good stability, widely used in various embedded systems and development boards.

CP2102:

Affordable, good compatibility, and also commonly used.

PL2303:

Low price, suitable for some simple application scenarios.

Use

Driver installation:

When using TTL cables, you usually need to install the corresponding driver on the computer to identify and use the device.

Connection method:

Connect the USB end to the computer, and connect the TXD, RXD, GND, and VCC pins on the other end to the corresponding pins of the target device.

TTL cable is a cable used to convert USB signals into TTL level signals, which is widely used in debugging and programming of embedded systems and microcontrollers. It uses a voltage level of 3.3V or 5V and is suitable for short-distance, low-voltage serial communication.

About US

Premier Cable is a professional manufacturer of USB serial cables, including USB to TTL cables, USB to RS232 cables, USB to RS485 cables and USB to RS422 cables. All of our products use original FTDI chips to ensure high quality and stability. As a factory direct seller, we not only guarantee product quality, but also provide very competitive prices to provide customers with value-for-money solutions. Whether it is embedded system development or industrial automation applications, Premier Cable is always your ideal choice.