QFN Packaged, ±15kV ESD Protected, +2.7V to +5.5V, 10Nanoamp, 250kbps, RS-232 Transmitters/Receivers

Intersil’s ISL4241E, ISL4243E devices are 2.7V to 5.5V powered RS-232 transmitters/receivers which meet ElA/TIA-232 and V.28/V.24 specifications, even at VCC = 3.0V. Additionally, they provide ±15kV ESD protection (IEC61000-4-2 Air Gap and Human Body Model) on transmitter outputs and receiver inputs (RS-232 pins). Targeted applications are PDAs, Palmtops, and notebook and laptop computers where the low operational, and even lower standby, power consumption is critical. Efficient on-chip charge pumps, coupled with manual and automatic power-down functions, reduce the standby supply current to a 10nA trickle.

Features

• Pb-Free Available (RoHS compliant)

• Parameters Fully Specified for 10 Tolerance Supplies and Full Industrial Temp Range

• Available in Small QFN (5mmx5mm) Package which is 60 Smaller than a 28 Lead TSSOP

• ESD Protection for RS-232 I/O Pins to ±15kV (IEC61000)

• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V

• RS-232 Compatible with VCC = 2.7V

• On-Chip Voltage Converters Require Only Four External 0.1µF Capacitors

• Manual and Automatic Power-down Features

• Receiver Hysteresis For Improved Noise Immunity

• Guaranteed Minimum Data Rate . . . . . . . . . . . . . 250kbps

• Wide Power Supply Range . . . . . . Single +2.7V to +5.5V

• Low Supply Current in Power-down State . . . . . . . . .10nA

Applications

• Any Space Constrained System Requiring RS-232 Ports

- Battery Powered, Hand-Held, and Portable Equipment

- Laptop Computers, Notebooks

- PDAs and Palmtops, Data Cables

- Cellular/Mobile Phones, Digital Cameras, GPS Receivers