DATASHEET
ISL3179E, ISL3180E FN6365
Rev. 6.00
Nov 9, 2017 High ESD Protected, +125В°C, 40Mbps, 3.3V, Full Fail-Safe RS-485/RS-422
Transceivers
The ISL3179E and ISL3180E are high ESD protected (see
Table 2 on page 2), 3.3V powered, single transceivers that
meet both the RS-485 and RS-422 standards for balanced
communication. Each device has low bus currents
(+220µA/-150µA), so they present a “1/5 unit load” to the
RS-485 bus. This allows up to 160 transceivers on the network
without violating the RS-485 specification’s 32 unit load
maximum, and without using repeaters. Features Receiver (Rx) inputs feature a “full fail-safe” design, which
ensures a logic high Rx output if Rx inputs are floating,
shorted, or terminated but undriven. High data rates . up to 40Mbps The ISL3180E is configured for full duplex applications. The
ISL3179E half duplex version multiplexes the Rx inputs and Tx
outputs to allow a transceiver with an output disable function
in 8 Ld packages. Full fail-safe (open, shorted, terminated/undriven) receiver Hot plug circuitry ensures that the Tx and Rx outputs remain in
a high impedance state while the power supply stabilizes. High ESD protection on RS-485 I/O pins
-ISL3179E . В±16.5kV IEC61000
-ISL3180E В±12kV HBM
-Class 3 HBM level on all other pins (ISL3179E) . >9kV Specified for +125В°C operation 5V tolerant logic inputs 1/5 unit load allows up to 160 devices on the bus Hot plug -Tx and Rx outputs remain three-state during
power-up Low quiescent current . 4mA (max) Low current shutdown mode . 1ВµA (max) -7V to +12V common-mode input voltage range Related Literature For a full list of related documents, visit our website …
