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3.3V, ±15kV ESD Protected, Two Port, Dual Protocol (RS-232/RS-485) Transceivers

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 VCC supply as low as 3.15V. The transceivers are RS-232 compliant, with the Rx inputs handling up to ±25V.

Features

? ±15kV (HBM) ESD protected bus pins (RS-232 or RS-485)

? Operates from a single 3.3V supply

? Two independent ports, port 1 set for RS-232 (2 Transceivers) and port 2 for RS-485/RS-422 (1 transceiver)

? True flow-through pinouts (Rx inputs and Tx outputs all on the same side) simplify board layouts

? Pb-free (RoHS compliant)

? Full fail-safe (open/short) RS-485/422 Port 2 Rx

? User selectable RS-485 data rates

- Fast speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . up to 20Mbps

- Slew rate limited . . . . . . . . . . . . . . . . . . . . . . up to 115kbps

? Fast RS-232 data rate . . . . . . . . . . . . . . . . . . . . up to 400kbps

? Small charge pump capacitors . . . . . . . . . . . . . . . . 4 x 0.1μF

? Low current shutdown mode . . . . . . . . . . . . . . . . . . . . . . 40μA

? QFN package saves board space (ISL33337E only)

Applications

? Gaming applications (e.g., slot machines)

? Single board computers

? Factory automation

? Security networks

? Industrial/process control networks

? Level translators (e.g., RS-232 to RS-422)

? Point-of-sale equipment