Renesas Electronics Corporation 3.3V, ±15kV ESD Protected, Two Port, Dual Protocol (RS-232/RS-485) Transceiver in a QFN Package ISL33337EIRZ

The ISL33334E, ISL33337E 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/RS-422 transceiver.
The on-board charge pump generates RS-232 compliant ±5V Tx output levels from a single V_CC supply as low as 3.15V. The transceivers are RS-232 compliant, with the Rx inputs handling up to ±25V.
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 (span style="text-decoration: overline"RE485/span) allows Tx/Rx direction control, via a single signal, simply by connecting the corresponding DE485 and span style="text-decoration: overline"RE485/span pins together.
The ISL33334E and ISL33337E also include a shutdown function, which disables the Tx and Rx outputs, disables the charge pumps and places the IC in a low current (40µA) mode.
The ISL33337E is a QFN packaged device for space constrained applications.

RS-422/RS-485 Interface IC Pb-free Dual 3.3V Fixed RS485/RS232 Transceiver, 40 lead 6X6

Integrated Circuits (ICs) - Interface ICs - Pre-ordered Chips