The DS2413 is a dual-channel programmable I/O 1-Wire® chip. The PIO outputs are configured as open-drain and provide up to 20mA continuous sink capability and off-state operating voltage up to 28V. Control and sensing of the PIO pins is performed with a dedicated device-level command protocol. To provide a high level of fault tolerance in the end application, the 1-Wire IO and PIO pins are all capable of withstanding continuous application of voltages up to 28V max. Communication and operation of the DS2413 is performed with the single contact Maxim/Dallas 1-Wire serial interface.
The DS2413 is a dual‑channel programmable I/O 1‑Wire device. Each PIO pin is open‑drain, can sink up to 20 mA continuously and tolerate up to 28 V. Communication uses Maxim/Dallas 1‑Wire protocol at standard (14.9 kbps) or over‑drive (100 kbps) speeds, and each device carries a unique 64‑bit ROM registration number.
The document provides absolute maximum ratings, electrical characteristics, pin configuration, command flow charts for PIO read/write, example transaction sequences, package information for TSOC and TDFN options, and revision history. It is intended for designers integrating the DS2413 into LED control, accessory identification, system monitoring, and general‑purpose I/O applications.
| Supply voltage range | 2.8 V to 5.25 V |
|---|---|
| Maximum voltage on any pin to GND | +30 V |
| Maximum continuous sink current per PIO pin | 20 mA |
| Maximum current into PIO pin | +30 mA |
| Operating temperature range | -55 °C to +125 °C |
| On‑resistance of PIO pulldown transistor | 20 Ω max |
Each PIO pin can continuously sink up to 20 mA.
Each DS2413 has a 64‑bit unique ROM registration number.
It supports standard speed up to 14.9 kbps and over‑drive speed up to 100 kbps.