GM3243EBA

GM3243E is a communication interface IC powered by a 3V/5.5V supply, featuring auto-shutdown/wake-up, high data rate capability, and enhanced ESD protection. All transmitter outputs and receiver inputs are protected to ±15kV via IEC 1000-4-2 air-gap discharge, ±8kV via IEC 1000-4-2 contact discharge, and ±15kV via the Human Body Model. When the RS-232 cable is disconnected or the transmitter of the connected peripheral is disabled, the IC enters a low-power shutdown mode, reducing power consumption without requiring any modifications to existing BIOS or OS. The transceiver employs a proprietary low-dropout transmitter output stage combined with a dual charge pump to achieve true RS-232 performance from a +3.0V to +5.5V supply. The charge pump requires only four small 0.1μF capacitors to operate from a +3.3V supply. The device is guaranteed to operate at data rates up to 250kbps while maintaining RS-232 output levels.

Applications

• Notebooks, sub-notebooks, and PDAs
• Mobile phones
• Battery-powered devices
• Handheld devices
• Peripherals

Key features

• True RS-232 operation from Vcc = +3.0V to +5.5V
• 1μA supply current via auto-shutdown
• Guaranteed 250kbps data rate
• Auto-powerdown disables driver outputs when no valid RS-232 signals detected
• Accepts 5V logic inputs with 3.3V supply
• Interoperable with EIA/TIA-232 and compliant with EIA/TIA-562 down to +2.7V supply
• Enhanced ESD ratings: ±15kV Human Body Model, ±15kV IEC61000-4-2 Air Discharge, ±8kV IEC61000-4-2 Contact Discharge