This datasheet introduces MAX3224E/MAX3225E/MAX3226E/MAX3227E/MAX3244E/MAX3245E, which are 3V-powered EIA/TIA-232 and V.28/V.24 communications interfaces with automatic shutdown/wakeup features, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection.
The Maxim MAX3224E‑MAX3227E and MAX3244E‑MAX3245E are 3 V‑powered RS‑232 transceivers with AutoShutdown Plus, MegaBaud operation and up to +15 kV ESD protection. They are offered in TQFN, SSOP and TSSOP packages for space‑constrained, battery‑powered and handheld applications.
The document provides detailed electrical characteristics, timing specifications, pin descriptions, and ordering information for each part number, along with typical operating curves and absolute maximum ratings.
| Supply Current (Force‑On) | 40 µA typical |
|---|---|
| Supply Current (Shutdown) | 10 µA typical |
| Maximum Data Rate | 250 kbps (MAX3224E/3226E/3244E) or 1 Mbps (MAX3225E/3227E/3245E) |
It puts the device into a low‑power shutdown mode when the RS‑232 cable is disconnected or the transmitters are idle for more than 30 seconds, and wakes it when a valid transition is detected.
The MAX3225E supports up to 1 Mbps using MegaBaud operation.