ISL83387EIVZ

The ISL83387E is a 3.0V to 5.5V powered RS-232
transceiver that 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 industrial laptop computers,
Palmtops, PDAs, and notebooks where the low
operational power consumption 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 1µA trickle. The TSSOP
packaging and the use of small, low value capacitors
ensure board space savings. Data rates greater than
250kbps are ensured 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
(for example, a UART).
The ISL83387E includes an enhanced automatic
power-down function that powers down the on-chip
power-supply and driver circuits. Automatic
powerdown occurs when all receiver and transmitter
inputs detect no signal transitions for a period of 30
seconds. The ISL83387E powers back up
automatically, when it senses a transition on any
transmitter or receiver input.
Table 1 summarizes the features of the ISL83387E
and Application Note AN9863 summarizes the
features of each device comprising the 3V RS-232
family.