Power Electronics
LPC UARTs Reduce Footprint in Industrial PCs

LPC UARTs Reduce Footprint in Industrial PCs

Exar Corporation announced the XR28V382 and XR28V384 UARTs for the Intel Low Pin Count (LPC) motherboard bus. The new LPC UARTs reduce footprint while increasing data integrity and throughput by providing industry leading 128 byte FIFOs.  These devices are targeted towards industrial PCs, factory automation, process controllers, network routers, and single board embedded computers.

The XR28V382 is packaged in a small 5x5mm 32 pin QFN and includes two UART channels, while the XR28V384 has four UART channels in a 7x7mm 48 pin TQFP.  Exar's dual and quad LPC UARTs, compared to 128 pin super I/O devices, offer the same or more serial channels in a significantly smaller footprint, offering as much as 8X reduction in board space.

Both the two channel XR28V382 and four channel XR28V384 UARTs include Exar's automatic half duplex control for RS-485 networks.  These parts feature 128 byte transmit and receive FIFOs, are rated for the industrial temp range, and operate at 3.3V.  Each UART channel supports serial data rates up to 3Mbps.

Suggested retail prices for XR28V382 and XR28V384 are $2.40 and $3.50 respectively, in 1,000-unit quantities.

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