The MAX3385E is a member of the MAX3385 family of low-power RS-232 transceivers that provide a 3V interface supply and 250kbps data-rate capability. This device features 1µA shutdown mode, low power, high ESD protection, and is suitable for hand-held equipment, battery-powered peripherals, and printers.
The MAX3385E is a 3 V‑powered EIA/TIA‑232 and V.28/V.24 communications interface offering low power consumption, high data‑rate capability, and robust ESD protection. It operates from a 3.0 V to 5.5 V supply, uses a dual charge‑pump architecture, and provides true RS‑232 voltage levels while drawing only a few hundred microamps in normal operation.
Key features include +15 kV Human‑Body Model ESD protection, a 1 µA shutdown current with receivers still active, guaranteed 250 kbps data rate, 250 µs exit‑shutdown time, and a 6 V/µs slew rate. The device is offered in a 20‑pin SSOP package for commercial (0 °C‑+70 °C) or extended‑industrial (‑40 °C‑+85 °C) temperature ranges.
| Supply Voltage | 3.0 V to 5.5 V |
|---|---|
| Shutdown Supply Current | ≈10 µA |
| ESD Protection (Contact Discharge) | +8 kV |
| ESD Protection (Air‑Gap Discharge) | +15 kV |
| Package Type | 20‑pin SSOP |
| Temperature Range (Commercial) | 0 °C to +70 °C |
| Temperature Range (Extended‑Industrial) | -40 °C to +85 °C |
In shutdown, the supply current falls to about 10 µA while the receivers remain active.