- POWER TRANSISTOR WIRING HARNESS HOW TO
- POWER TRANSISTOR WIRING HARNESS SERIAL
- POWER TRANSISTOR WIRING HARNESS PLUS
Accordingly, the level of protection that they can provide is limited. There are numerous other applications that, for practical reasons, cannot be listed here.ĭevices in this category are notable for their low cost. The combination of additional resources determines the typical application areas for a device.
POWER TRANSISTOR WIRING HARNESS PLUS
The 16mm-diameter iButton package protects the 1-Wire chip inside from harsh environments.įigure 4. The 6.0mm × 6.0mm × 0.9mm SFN package has large contact areas.įigure 3. Many devices are also available as bumped die (Figure 4).įigure 2. The 16mm-diameter stainless steel iButton ®2 package protects 1-Wire devices from harsh environments, making them suitable for indoor and outdoor use (Figure 3). Designed for contact applications and easy attachment, the 2-contact SFN 1 package accommodates parasitically powered 1-Wire devices (Figure 2). How Are 1-Wire Devices Packaged?ġ-Wire devices are offered in conventional transistor (TO-92) and IC (TSOC, TDFN, SOT23) packages. With two contacts, 1-Wire devices are the most economical way to add electronic functionality to nonelectronic objects for identification, authentication, and delivery of calibration data or manufacturing information. With only one contact to protect, the built-in ESD protection of 1-Wire devices is extremely high. When the voltage returns, the slaves wake up and signal their presence. Either disconnecting from the 1-Wire bus or a loss of contact puts the 1-Wire slaves into a defined reset state.
POWER TRANSISTOR WIRING HARNESS SERIAL
Compared to other serial communication systems such as I 2C or SPI, 1-Wire devices are designed for use in a momentary contact environment. What Is Special About 1-Wire?ġ-Wire is a voltage-based digital system that works with two contacts, data and ground, for half- duplex bidirectional communication.
The 1-Wire master/slave configuration uses a single data line plus ground reference. Most 1-Wire devices have no pin for a power supply they take their energy from the 1-Wire bus (parasitic power supply).įigure 1. Typically, 1-Wire slave devices operate over the following four voltage ranges: The 8-bit family code, a subset of the 64-bit ID, identifies the device type and functionality. Each 1-Wire slave device has a unique, unalterable, factory-programmed, 64-bit identification number (ID), which serves as device address on the 1-Wire bus. A 1-Wire master initiates and controls the communication with one or more 1-Wire slave devices on the 1-Wire bus (Figure 1). The basis of 1-Wire ® technology is a serial protocol using a single data line plus ground reference for communication.
POWER TRANSISTOR WIRING HARNESS HOW TO
The article concludes with practical information on how to evaluate 1-Wire devices, explains device customization options, and references resources that assist customers with integration of 1-Wire technology in their systems. The main section discusses 1-Wire devices by their feature set and explains the typical applications. This article provides a general overview of Maxim’s 1-Wire ® technology, its communication concept and the benefit of low pin count package options.
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