MAX3108 SPI/I2C UART with 128-Word FIFOs in WLP is a low-power, small form factor universal asynchronous receiver-transmitter (UART) from Maxim Integrated Products. It features 128 words of receive and transmit FIFOs, and is controlled through a serial I2C or SPI™ controller interface.
The MAX3108 is a small‑form‑factor universal asynchronous receiver‑transmitter (UART) that can be controlled via SPI or I²C. It features 128‑word transmit and receive FIFOs, auto‑sleep and shutdown modes for low power, and a supply range of 1.71 V to 3.6 V. The device supports baud rates up to 24 Mbps, four flexible GPIOs that can sink up to 20 mA, and a 25‑bump WLP package (2.1 mm × 2.1 mm).
Typical applications include portable communication devices, mobile Internet devices, low‑power handheld equipment, medical systems, and point‑of‑sale terminals. The datasheet provides absolute maximum ratings, detailed electrical characteristics, register maps, timing diagrams, and example application circuits such as an RS‑485 half‑duplex interface.
| Supply Voltage | 1.71 V to 3.6 V |
|---|---|
| Maximum Baud Rate | 24 Mbps |
| FIFO Depth | 128 words (RX) / 128 words (TX) |
| GPIO Sink Current | 20 mA per pin |
| Operating Temperature Range | -40 °C to +85 °C |
The MAX3108 operates from 1.71 V to 3.6 V.
It provides 128 words of receive FIFO and 128 words of transmit FIFO.
The device can achieve up to 24 Mbps baud rate.