ISL83387E

Features:

*V_L Supply Pin for Compatibility with Mixed VoltageSystems
* ESD Protection for RS-232 I/O Pins to ±15kV (IEC61000)
* Low Power, Pin Compatible Upgrade for MAX3387E
* Manual and Enhanced Automatic Powerdown Features
* Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
* On-Chip Charge Pumps Require Only Four External 0.1F Capacitors
* Receivers Stay Active in Powerdown
* Very Low Supply Current . . . . . . . . . . . . . . . . . . . . 300A
* Guaranteed Minimum Data Rate . . . . . . . . . . . . . 250kbps
* Wide Power Supply Range . . . . . . . Single +3V to +5.5V
* Low Supply Current in Powerdown State. . . . . . . . . < 1A
* Pb-Free Plus Anneal Available (RoHS Compliant)




Application

* Any System Requiring RS-232 Communication Ports
- Battery Powered, Hand-Held, and Portable Equipment
- Laptop Computers, Notebooks, Palmtops
- Digital Cameras
- PDA's and PDA Cradles
- Cellular/Mobile Phones




Pinout






Specifications

V_CC to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6V
V_L to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V
V+ to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V
V- to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +0.3V to -7V
V+ to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V
Input Voltages
T_IN , FORCEON, FORCEOFF . . . . . . . . . . . . . . . . . . -0.3V to 6V
R_IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25V
Output Voltages
T_OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±13.2V
R_OUT , INVALID . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (V_L +0.3V)
Short Circuit Duration
T_OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . See Specification Table
Thermal Resistance (Typical, Note 1) _JA ( /W)
24 Ld TSSOP Package . . . . . . . . . . . . . . . . . . . . . . 140
Moisture Sensitivity (see Technical Brief TB363)
TSSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Level 1
Maximum Junction Temperature (Plastic Package) . . . . . . . 150
Maximum Storage Temperature Range. . . . . . . . . . -65 to 150
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300
(Lead Tips Only)
Operating Conditions
Temperature Range
ISL83387EIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to 85

CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1. _JA is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.




Description

The Intersil ISL83387E is a 3.0V to 5.5V powered RS-232 transceiver 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 manual and enhanced automatic powerdown functions, reduce the standby supply current to a 1mA trickle. TSSOP 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. The ISL83387E features a VL pin that adjusts the logic pin output levels and input thresholds to values compatible with the VCC powering the external logic (e.g., a UART). This device includes an enhanced automatic powerdown function which powers down the on-chip power-supply and driver circuits. This occurs when all receiver and transmitter inputs detect no signal transitions for a period of 30 seconds. It power back up, automatically, whenever it senses a transition on any transmitter or receiver input.