HI-3598PCI

The HI-3596, HI-3597, HI-3598 and HI-3599 from Holt Integrated Circuits are silicon gate CMOS ICs for interfacing eight ARINC 429 receive buses to a high-speed Serial Peripheral Interface (SPI) enabled microcontroller. Each receiver has user-programmable label recognition for up to 16 labels, a four-word data buffer (FIFO), and an on-chip analog line receiver. Receive FIFO status can be monitored using the programmable external interrupt pins, or by polling the status register. Other features include the ability to switch the bit-signifiance of the ARINC 429 label, and to recognize the 32nd received ARINC bit as data or a parity flag. Versions are available with different input resistance values to provide flexibility when using external lightning protection circuitry.