EXAR Manuals

The XR16M2650 is a high performance low voltage dual universal asynchronous receiver and transmitter (UART) with 32 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, XR16V2550 and XR16V2650.

The SP6687 is a compact, highly efficient and highly integrated 4 channel charge pump white LED driver from Sipex Corporation. This device is available in a 4mm x 4mm, 16 pin QFN package and can support from 1 to 4 White LEDs. It is optimized for Li-Ion battery applications.

The XR-2211A is a monolithic phase-locked loop (PLL) system especially designed for data communications applications. It is particularly suited for FSK modem applications. It operates over a wide supply voltage range of 4.5 to 20V and a wide frequency range of 0.01Hz to 300kHz. It can accommodate analog signals between 10mV and 3V, and can interface with conventional DTL, TTL, and ECL logic families. The circuit consists of a basic PLL for tracking an input signal within the pass band, a quadrature phase detector which provides carrier detection, and an FSK voltage comparator which provides FSK demodulation. External components are used to independently set center frequency, bandwidth, and output delay. An internal voltage reference proportional to the power supply is provided at an output pin. The XR-2211A is available in 14 pin packages specified for

The XR16M770 is an enhanced Universal Asynchronous Receiver and Transmitter (UART) 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 3.3V, 12.5 Mbps at 2.5V and 7.5 Mbps at 1.8V with 4X data sampling rate.

The product is a 3.0V/3.3V low power microprocessor supervisory with battery switch-over that integrates a myriad of components involved in discrete solutions to monitor power-supply and battery-control functions in µP and digital systems. It features a watchdog timer, a µP reset and backup- battery switchover, and power-failure warning; a complete µP monitoring and watchdog solution.

the xr16m780 is a high-performance uart from exar corporation that supports 1.62v to 3.63v voltage range, maximum data transfer rate of 16mbps, automatic hardware and software flow control, 64 bytes of transmit and receive fifo buffers, and support rs485 half-duplex and multipoint communication modes

The XR16M654/654D is a quad Universal Asynchronous Receiver and Transmitter (UART) from Exar Corporation that supports data rates of up to 16 Mbps and includes automatic hardware and software flow control and FIFO buffers.

The SP6132 is a wide input, 300KHz synchronous PWM controller optimized for high efficiency. The part is designed to be especially attractive for dual supply, 12V step down with 5V used to power the controller. This lower VCC voltage minimizes power dissipation in the part. The SP6132 is designed to drive a pair of external NFETs using a fixed 300kHz frequency, PWM voltage mode architecture. Protection features include UVLO, thermal shutdown and output short circuit protection. The SP6132 is available in the cost and space saving 10-pin MSOP.

The XR16L2450 is a dual universal asynchronous receiver and transmitter (UART) from Exar Corporation with lower operating voltage and 5 volt tolerant inputs.

The ST16C550 is a universal asynchronous receiver and transmitter with 16 byte transmit and receive FIFO. It operates at 2.97 to 5.5 volts. A programmable baud rate generator can select transmit and receive clock rates from 50 bps to 1.5 Mbps. The ST16C550 is an improved version of the NS16C550 UART with higher operating speed and lower access time.

ST16C450 is a high-performance asynchronous receiver and transmitter chip produced by EXAR company, which has better performance than NS16450 UART and has higher operating speed and lower access time.

XR21V1410 is an enhanced Universal Asynchronous Receiver and Transmitter (UART) with a USB interface.

The SP481R and SP485R are pin-to-pin equivalent with our existing SP485 product and contain enhancements such as higher ESD tolerance and high receiver input impedance. The higher receiver input impedance allows for connecting over 400 transceivers on a single transmission line without degrading the RS-485 driver signal. Each device is packaged in an 8-pin plastic DIP or 8-pin narrow SOIC package. The SP481R offers a shutdown feature via the enable pins which will reduce the supply current (ICC) below 0.5µA typical.

SP6651A is a 800mA synchronous buck regulator which is ideal for portable applications that use a Li-Ion or 3 cell alkaline/NiCD/NiMH input