ISL83485IBZ

These Renesas RS-485/RS-422 devices are BiCMOS 3.3V
powered, single transceivers that meet both the RS-485 and
RS-422 standards for balanced communication. Unlike
competitive devices, this Renesas family is specified for 10%
tolerance supplies (3V to 3.6V).
The ISL83483 and ISL83488 use slew rate limited drivers
which reduce EMI, and minimize reflections from improperly
terminated transmission lines, or unterminated stubs in
multidrop and multipoint applications.
Data rates up to 10Mbps are achievable by using the
ISL83485, ISL83490, or ISL83491, which feature higher
slew rates.
Logic inputs (for example, DI and DE) accept signals in
excess of 5.5V, making them compatible with 5V logic
families.
Receiver (Rx) inputs feature a “fail-safe if open” design,
which ensures a logic high output if Rx inputs are floating. All
devices present a “single unit load” to the RS-485 bus, which
allows up to 32 transceivers on the network.
Driver (Tx) outputs are short-circuit protected, even for
voltages exceeding the power supply voltage. Additionally,
on-chip thermal shutdown circuitry disables the Tx outputs to
prevent damage if power dissipation becomes excessive.
The ISL83488, ISL83490, and ISL83491 are configured for
full duplex (separate Rx input and Tx output pins)
applications. The ISL83488 and ISL83490 are offered in
space saving 8 Ld packages for applications not requiring Rx
and Tx output disable functions (for example, point-to-point
and RS-422). Half duplex configurations (ISL83483,
ISL83485) multiplex the Rx inputs and Tx outputs to provide
transceivers with Rx and Tx disable functions in 8 Ld
packages.