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ISL81334, ISL41334
В±15kV ESD Protected, 5V, Two Port, Dual Protocol (RS-232/RS-485) Transceivers ISL81334, ISL41334
Rev.4.00
Mar 24, 2017 The ISL81334 and ISL41334 are two-port interface ICs in
which each port can be independently configured as a single
RS-485, RS-422 transceiver, or as a dual (2 Tx, 2 Rx) RS-232
transceiver. With both ports set to the same mode, two
RS-485, RS-422 transceivers, or four RS-232 transceivers are
available. Features If either port is in RS-232 mode, the onboard charge pump
generates RS-232 compliant В±5V Tx output levels from a
single VCC supply as low as 4.5V. Four small 0.1ВµF capacitors
are required for the charge pump. The transceivers are RS-232
compliant, with the Rx inputs handling up to В±25V, and the Tx
outputs handling В±12V. Flow-through pinouts simplify board layouts В±15kV (HBM) ESD protected bus pins (RS-232 or RS-485) Two independent ports, each user selectable for RS-232
(2 transceivers) or RS-485, RS-422 (1 transceiver) Single 5V (10% tolerance) supply Pb-Free (RoHS compliant) Large (2.7V) differential VOUT for improved noise immunity
in RS-485, RS-422 networks Full fail-safe (open/short) Rx in RS-485, RS-422 mode In RS-485 mode, the transceivers support both the RS-485
and RS-422 differential communication standards. The
receivers feature “full fail-safe” operation, so the Rx outputs
remain in a high state if the inputs are open or shorted
together. The transmitters support up to three data rates, two
of which are slew rate limited for problem-free
communications. The charge pump disables when both ports …
