Interface ICs

The XRT91L80 is a fully integrated SONET/SDH transceiver for SONET OC-48/STM-16 applications supporting the use of Forward Error Correction (FEC) capability.

The XRT91L32 is a fully integrated SONET/SDH transceiver for SONET/SDH 622.08 Mbps STS-12/STM-4 or 155.52 Mbps STS-3/STM-1 applications.

The XRT75R03 is a three-channel fully integrated Line Interface Unit (LIU) featuring EXAR's R3 Technology (Reconfigurable, Relayless Redundancy) with Jitter Attenuator for E3/DS3/STS-1 applications.

16-bit SPI GPIO expander with integrated level shifters.

The XRA1404 is an 8-bit GPIO expander with an SPI interface. After power-up, the XRA1404 has internal 100K ohm pull-up resistors on each I/O pin that can be individually enabled.

The XRA1402 is an 8-bit GPIO expander with an SPI interface. After power-up, the XRA1402 has internal 100K ohm pull-up resistors on each I/O pin that can be individually enabled.

The XRA1203 is a 16-bit GPIO expander with an I2C/SMBus interface.

The XRA1202 is an 8-bit GPIO expander with an I2C/SMBus interface. After power-up, the XRA1202 has internal 100K ohm pull-up resistors on each I/O pin that can be individually enabled.

The XRA1200/1200P is an 8-bit GPIO expander with an I2C/SMBus interface.

The XRA1200/1200P is an 8-bit GPIO expander with an I2C/SMBus interface.

The XR22801 is a Hi-Speed USB 2.0 compound device with an embedded hub and 4 downstream USB functions: 10/100 Ethernet Controller, UART, multi-master capable I2C controller, and an Enhanced Dedicated GPIO Entity (EDGE) controller.

The XR17C154 is a quad PCI Bus Universal Asynchronous Receiver and Transmitter (UART) with same package and pin-out as the Exar XR17x158 octal UARTs.

The XR16V6541 (V654) is an enhanced quad Universal Asynchronous Receiver and Transmitter (UART) each with 64 bytes of transmit and receive FIFOs, programmable transmit and receive FIFO trigger levels, automatic hardware and software flow control, and data rates of up to 16 Mbps at 4X sampling rate.

The XR16V6541 (V654) is an enhanced quad Universal Asynchronous Receiver and Transmitter (UART) each with 64 bytes of transmit and receive FIFOs.

The XR16V6541 (V654) is an enhanced quad Universal Asynchronous Receiver and Transmitter (UART) each with 64 bytes of transmit and receive FIFOs, programmable transmit and receive FIFO trigger levels, automatic hardware and software flow control, and data rates of up to 16 Mbps at 4X sampling rate.

The XR16V564 is an enhanced quad Universal Asynchronous Receiver and Transmitter (UART) with 32 bytes of transmit and receive FIFOs, supporting data rates up to 16 Mbps.

The XR16V564/564D is an enhanced quad Universal Asynchronous Receiver and Transmitter (UART) with 32 bytes of transmit and receive FIFOs, data rates of up to 16 Mbps at 4X sampling rate.

The XR16V554 (V554) is a quad Universal Asynchronous Receiver and Transmitter (UART) with 16 bytes of transmit and receive FIFOs, selectable receive FIFO trigger levels and data rates of up to 4 Mbps at 3.3 V.

The XR16V554 (V554) is a quad Universal Asynchronous Receiver and Transmitter (UART) with 16 bytes of transmit and receive FIFOs, selectable receive FIFO trigger levels and data rates of up to 4 Mbps at 3.3 V.

The XR16M2752 is a high performance dual universal asynchronous receiver and transmitter (UART) with 64 byte TX and RX FIFOs operating from 1.62 to 3.6 volts.

The XR16V2751 (V2751) is a high performance dual universal asynchronous receiver and transmitter (UART) with 64 byte TX and RX FIFOs. The device operates from 2.25 to 3.6 volts with 5 Volt tolerant inputs and is pin-to-pin and software compatible to Exar’s XR16L2751.

The XR16V2750 (V2750) is a high performance dual universal asynchronous receiver and transmitter (UART) with 64 byte TX and RX FIFOs.

The XR16V2652 (V2652) is a high performance dual universal asynchronous receiver and transmitter (UART) with 32 byte TX and RX FIFOs.

The XR16V2651 (V2651) is a high performance dual universal asynchronous receiver and transmitter (UART) with 32 byte TX and RX FIFOs.

The XR16V2651 (V2651) is a high performance dual universal asynchronous receiver and transmitter (UART) with 32 byte TX and RX FIFOs.

The XR16V2650 (V2650) is a high performance dual universal asynchronous receiver and transmitter (UART) with 32 bytes TX and RX FIFOs.

The XR16V2650 is a high performance dual universal asynchronous receiver and transmitter (UART) with 32 bytes TX and RX FIFOs, operating from 2.25 to 3.6 volts with 5 Volt tolerant inputs.

The XR16V2650 (V2650) is a high performance dual universal asynchronous receiver and transmitter (UART) with 32 bytes TX and RX FIFOs.

The XR16M8901 (M890) is a single-channel Universal Asynchronous Receiver and Transmitter (UART) with integrated level shifters and 128 bytes of transmit and receive FIFOs.

The XR16M554 (M554) is a quad Universal Asynchronous Receiver and Transmitter (UART) with 16 bytes of transmit and receive FIFOs, selectable receive FIFO trigger levels and data rates of up to 4 Mbps at 3.3 V.

The XR16M2750 (M2750) is a high performance dual universal asynchronous receiver and transmitter (UART) with 64 byte TX and RX FIFOs.

The XR16M2550 (M2550) is a high performance dual universal asynchronous receiver and transmitter (UART) with 16 bytes TX and RX FIFOs. The device operates from 1.62 to 3.63 volts and is pin-to-pin and software compatible to the ST16C2550, XR16L2550, and XR16V2550.

The XR16L788 is a 2.97V to 5.5V octal Universal Asynchronous Receiver and Transmitter (UART) with 5V tolerant inputs, designed for high bandwidth communication systems.

The XR16C854/854D is an enhanced quad Universal Asynchronous Receiver and Transmitter (UART) each with 128 bytes of transmit and receive FIFOs, transmit and receive FIFO counters and trigger levels, automatic hardware and software flow control, and data rates of up to 2 Mbps.

The XR16C854/854D is an enhanced quad Universal Asynchronous Receiver and Transmitter (UART) each with 128 bytes of transmit and receive FIFOs, transmit and receive FIFO counters and trigger levels, automatic hardware and software flow control, and data rates of up to 2 Mbps.

The XR16C850 (850) is a Universal Asynchronous Receiver and Transmitter (UART). This device supports Intel and PC mode data bus interface and is software compatible to industry standard 16C450, 16C550, ST16C580 and ST16C650A UARTs.

The ST16C552/ST16C552A (552/552A) is a dual universal asynchronous receiver and transmitter (UART) with an added bi-directional parallel port that is directly compatible with a CENTRONICS type printer.

The ST16C452/ST16C452PS is a dual universal asynchronous receiver and transmitter (UART) with an added bi-directional parallel port that is directly compatible with a CENTRONICS type printer.

The ST16C452/ST16C452PS is a dual universal asynchronous receiver and transmitter (UART) with an added bi-directional parallel port that is directly compatible with a CENTRONICS type printer.

The ST16C452/ST16C452PS (452/452PS) is a dual universal asynchronous receiver and transmitter (UART) with an added bi-directional parallel port that is directly compatible with a CENTRONICS type printer.

The ST16C2450 is a dual universal asynchronous receiver and transmitter (UART) with lower operating voltage and 5 volt tolerant inputs.

The SP5301 is a half-duplex Universal Serial Bus (USB) differential transceiver that interfaces with the USB Serial Interface Engine (SIE).

The SP508 is a monolithic device that supports eight (8) popular serial interface standards for Wide Area Network (WAN) connectivity.

The SP490 is a low power differential line driver/receiver meeting RS-485 and RS-422 standards up to 5Mbps. The SP491 is identical to the SP490 with the addition of driver and receiver tri-state enable lines.

SP481E and SP485E are a family of half-duplex transceivers that meet the specifications of RS-485 and RS-422 serial protocols with enhanced ESD performance.

The SP481, SP483, and SP485 are half-duplex transceivers meeting RS-485 and RS-422 requirements. BiCMOS design enables low power operation without performance sacrifice.

The SP483E is a half-duplex transceiver that meets the specifications of RS-485 and RS-422 serial protocols with enhanced ESD performance.

The SP4082E is designed for reliable, bidirectional communication on multipoint bus transmission lines. It is a half-duplex device.

Enhanced version of the SP200 family of RS-232 line drivers/receivers. Operates from +3.3V or +5V power supply.

The SP3495E-3497E are high-speed +3.3V RS-485/RS-422 transceivers with +/-15kV ESD protection and advanced failsafe features, suitable for high-speed bidirectional communication on multipoint bus transmission lines.