The MAX3535E/MXL1535E is a MAXIM isolated RS-485/RS-422 transceiver. This device uses high-voltage capacitors for isolation and supports 1000kbps communication speed. It also has short-circuit protection and overvoltage protection.
The MAX3535E and MXL1535E are isolated RS‑485/RS‑422 full‑duplex transceivers offering 2500 Vrms galvanic isolation between the communication side and the processor side. They support up to 1000 kbps data rates, feature true fail‑safe circuitry, hot‑swap capability, and provide +15 kV ESD protection.
These devices operate from a single low‑voltage supply (+3 V to +5.5 V for MAX3535E, +4.5 V to +5.5 V for MXL1535E) and include a 420 kHz transformer driver for power transfer. The transceivers are available in a 28‑pin Wide‑SO package and are rated for industrial temperature ranges.
| Supply Voltage (MAX3535E) | +3 V to +5.5 V |
|---|---|
| Supply Voltage (MXL1535E) | +4.5 V to +5.5 V |
| Maximum Data Rate | 1000 kbps full‑duplex |
| Receiver Load | 1/8 unit load, up to 256 devices |
| ESD Protection | +15 kV (HBM) |
The MAX3535E operates from a single +3 V to +5.5 V power supply.
The receiver has a 1/8 unit load, allowing up to 256 devices on the same bus.
Driver outputs and receiver inputs are protected against up to +15 kV electrostatic discharge (HBM).