The MAX3318E is a dual-driver, dual-receiver, RS- 232-compatible transceiver. The device features auto-power-down plus and enhanced electrostatic discharge (ESD) protection integrated into the chip. Driver output and receiver input are protected to ±15 kV using the IEC 61000-4-2 Air-Gap Discharge method, ±8 kV using the IEC 61000-4-2 Contact Discharge method, and ±15 kV using the Human- Body Model (HBM). The device operates at a data rate of 460 kbps. The transceiver has a proprietary low-dropout driver output stage, enabling RS-232-compatible operation from a 2.25-V to 3-V supply with a dual charge pump. The charge pump requires only four 0.1-μF CC capacitors and features a logic-level output (READY) that asserts when the charge pump is regulating and the device is ready to begin transmitting.

Features

• ESD Protection for RS-232 I/O Pins 
• ±15 kV (Human-Body Model)
• ±8 kV (IEC 61000-4-2, Contact Discharge)
• ±15 kV (IEC 61000-4-2, Air-Gap Discharge) 
• 300-μA Operating Supply Current 
• 1-μA Low-Power Standby (With Receivers Active) Mode 
• Designed to Transmit at a Data Rate of 460 kbps 
• Auto-Power-Down Plus Option Features Flexible Power-Saving Mode 
• Operates From a Single 2.25-V to 3-V V Supply