DATASHEET
ISL33354E, ISL33357E FN8775
Rev 1.00
Oct 21, 2016 5V, В±15kV ESD Protected, Two Port, Dual Protocol (RS-232/RS-485) Transceivers
The ISL33354E, ISL33357E are two port interface ICs where
port 1 is configured as a dual (2 Tx, 2 Rx) RS-232 transceiver,
and port 2 is a single RS-485/422 transceiver. Features An on-board charge pump generates RS-232 compliant В±5V Tx
output levels from a single VCC supply as low as 4.5V. The
transceivers are RS-232 compliant, with the Rx inputs
handling up to В±25V. Operates from a single 5V supply The port 2 transceiver supports both the RS-485 and RS-422
differential communication standards. The receiver features
"full fail-safe" operation, so the Rx output remains in a high
state if the inputs are open or shorted together. The
transmitter supports two data rates, one of which is slew rate
limited for problem free communication at low data rates. The
active low Rx enable pin (RE485) allows Tx/Rx direction
control, via a single signal, simply by connecting the
corresponding DE485 and RE485 pins together.
The ISL33354E and ISL33357E also include a shutdown
function, which disables the Tx and Rx outputs, disables the
charge pumps and places the IC in a low current (55ВµA) mode.
The ISL33357E is a QFN packaged device for space
constrained applications. В±15kV (HBM) ESD protected bus pins (RS-232 or RS-485) Two independent ports: port 1 set for RS-232 (2 transceivers) …
