ISL83386EIVZ

ISL83386EIVZ is a RS-232 transmitter/receiver with separate logic supply that meet ElA/TIA-232 and V.28/V.24 specifications, even at VCC = 3V. Applications are PDAs, Palmtops, and cell phones in which the low operational power consumption, and even lower standby power consumption is critical. Efficient on-chip charge-pumps, coupled with a manual power-down function reduces the standby supply current to a 1µA trickle. Small footprint packaging and the use of small, low value capacitors ensures board space savings as well. Data rates greater than 250kbps are ensured at worst case load conditions. The single pin power down function (SHDN (active high) = 0) disables all receiver and transmitter outputs, while shutting down charge pump to minimize supply current drain. Application includes any system requiring RS-232 communication ports, battery powered, hand-held, and portable equipment, laptop computers, notebooks, palmtops, digital cameras, PDAs and PDA cradles, cellular/mobile phones.

• VL pin for compatibility with mixed voltage systems
• ESD protection for RS-232 I/O pins to ±15kV
• Low power, pin compatible upgrade for MAX3386E and SP3203E
• Single SHDN (active high) pin disables transmitters and receivers
• Meets EIA/TIA-232 and V.28/V.24 specifications at 3V
• On-chip charge pumps require only four external 0.1µF capacitors at VCC = 3.3V
• Receiver hysteresis for improved noise immunity
• 1µA typical supply current, power down (SHDN (active high) = GND, all inputs at VCC or GND)
• Single wide power supply range from +3V to +5.5V
• 20 lead TSSOP package, operating temperature range from -40°C to +85°C