ISL83220E

Features:

•ESD Protection for RS-232 I/O Pins to ±15kV (IEC1000)
•Drop in Replacement for SP3220E
•Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
•Interoperable with RS-232 down to V_CC= 2.7V
•Latch-Up Free
•On-Chip Voltage Converters Require Only Four External 0.1µF Capacitors
•Manual Powerdown Feature with Receivers Active
•Separate Receiver Enable Pin
•RXand TX Hysteresis For Improved Noise Immunity
•Guaranteed Minimum Data Rate. . . . . . . . . . . . . 250kbps
•Guaranteed Minimum Slew Rate. . . . . . . . . . . . . . . 6V/µs
•Wide Power Supply Range . . . . . . . Single +3V to +5.5V
•Low Supply Current in Powerdown State. . . . . . . . . . .1µA




Application

-Battery Powered, Hand-Held, and Portable Equipment
-Laptop Computers, Notebooks, Palmtops
-Modems, Printers and other Peripherals
-Digital Cameras
-Cellular/Mobile Phones




Specifications

V_CC to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. -0.3V to 6V
V+ to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to 7V
V- to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +0.3V to -7V
V+ to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V
R_IN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±25V
Output Voltages
T_OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±13.2V
R_OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to V_CC+0.3V
Short Circuit Duration
T_OUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . .See Specification Table




Description

The Intersil ISL83220E is a 3.0V to 5.5V powered RS-232 transmitter/receiver which meets ElA/TIA-232 and V.28/V.24 specifications, even at VCC = 3.0V. Additionally, it provides 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 a manual powerdown function, reduce the standby supply current to a 1A trickle. Small footprint packaging, and the use of small, low value capacitors ensure board space savings as well. Data rates greater than 250kbps are guaranteed at worst case load conditions. This family is fully compatible with 3.3V only systems, mixed 3.3V and 5.0V systems, and 5.0V only systems. Table 1 summarizes the features of the ISL83320E, while Application Note AN9863 summarizes the features of each device comprising the ICL32XXE 3V family.