Product Overview: MAX3226CAE from Maxim Integrated

The MAX3226CAE is a high-performance, 3.0V to 5.5V, 1µA, 2Tx/2Rx RS-232 transceiver with auto shutdown from Maxim Integrated. This device is specifically designed to meet the stringent requirements of EIA/TIA-232 communication standards while operating in a low-voltage range and providing reduced power consumption.

Featuring a proprietary low-dropout transmitter output stage, the MAX3226CAE delivers true RS-232 performance from a 3.0V to 5.5V supply with a dual charge pump. The charge pump requires only four small 0.1µF capacitors for operation, saving board space and reducing the overall component count. This makes the MAX3226CAE an ideal choice for portable or space-constrained applications such as laptops, PDAs, and other handheld devices.

The auto shutdown feature enhances the MAX3226CAE's power-saving capabilities by entering a low-power shutdown mode when the device does not sense a valid signal transition on the receiver inputs for 30 seconds. This greatly extends battery life in portable systems by reducing the supply current to 1µA during periods of inactivity.

The MAX3226CAE comes in a 16-pin SSOP package and is fully specified over the -40°C to +85°C extended temperature range. Its integrated electrostatic discharge (ESD) protection exceeds ±15kV using the Human Body Model, ensuring robust performance in harsh environments.

Key features of the MAX3226CAE include:

• 3.0V to 5.5V Single Supply Operation
• 1µA Low-Current Shutdown Mode
• 250kbps Data Rate
• 2 Transmitters and 2 Receivers
• Receiver Hysteresis For Improved Noise Immunity
• Guaranteed 6V/µs Slew Rate
• ±15kV ESD Protection on Transmitter Outputs and Receiver Inputs

Overall, the MAX3226CAE is an exceptional RS-232 transceiver solution for applications requiring low power consumption, high ESD protection, and reliable data transfer over a wide voltage range.