Introduces the working principle, features and applications of MAX3346E bidirectional transceiver. MAX3346E is a USB transceiver that supports full-speed and low-speed USB communication, has an internal 1.5kΩ USB pull-up resistor, supports logic-selectable suspend mode, and operates at a voltage range of 1.65-5.5V.
The MAX3346E bidirectional transceiver converts logic‑level signals to USB signals and vice‑versa. It includes built‑in +15kV ESD protection on the D+ and D‑ pins, an internal 1.5kΩ pull‑up resistor, and operates from VL voltages as low as 1.65 V, making it compatible with low‑voltage ASICs. The device is rated for –40 °C to +85 °C and is offered in a miniature 4 × 4 mm UCSP package and a 14‑pin TSSOP.
The datasheet provides absolute maximum ratings, detailed electrical and timing characteristics, pin descriptions, and power‑supply configuration options such as normal, disable, sharing, and suspend modes. Application examples include cell phones, PDAs, MP3 players, and other USB‑enabled peripherals.
| VL Input Voltage Range | 1.65 V to 3.6 V |
|---|---|
| ESD Protection | +15 kV on D+ and D‑ |
| Operating Temperature Range | -40 °C to +85 °C |
The device provides +15 kV ESD protection on the D+ and D‑ pins.
VL can be supplied from 1.65 V to 3.6 V, while VCC operates from 4.0 V to 5.5 V.