DS2401 is a node device on the 1-Wire network. It is characterized by low cost, single pin, can be directly connected to a single port pin of a microprocessor, and supports 16.3kbits/s communication speed. The working temperature range is -40℃ to +85℃.
The DS2401 provides an absolutely unique 64‑bit registration number (8‑bit family code, 48‑bit serial number, 8‑bit CRC) for applications such as PCB identification, network node IDs and equipment registration. It operates over a wide industrial temperature range (‑40 °C to +85 °C) and can be powered directly from the data line, requiring no external supply.
Communication uses Dallas' 1‑Wire protocol on a single data pin, with a maximum data rate of 16.3 kbits/s. The device is offered in TO‑92, SOT‑223 and TSOC surface‑mount packages and supports a pull‑up resistor of 1.5 kΩ to 5 kΩ for reliable bus operation.
| Supply voltage (VPUP) | 2.8 V to 6.0 V |
|---|---|
| Maximum data rate | 16.3 kbits/s |
| Package options | TO‑92, SOT‑223, TSOC |
| Voltage on any pin (absolute max) | -0.5 V to +7.0 V |
| Input load current | 5 µA |
| Output low voltage @ 4 mA | 0.4 V |
It is used for PCB identification, network node IDs and equipment registration.
Power is derived from the data line itself, so no external power source is required.
The device can communicate at up to 16.3 kbits per second.
It operates from –40 °C to +85 °C.