IEEE 1394 link layer — what this controller does
The TSB12LV32PZ is a link layer controller for the IEEE 1394 serial bus, implementing the physical-to-link interface per IEEE 1394-1995 and 1394a-2000 standards.
100-LQFP — board fit and storage
Housed in a 100-LQFP package with a 14x14 mm body, the TSB12LV32PZ ships in trays.
For a legacy-interface part like this, active status is not guaranteed indefinitely — FireWire has been largely superseded by USB and Thunderbolt in consumer systems — but as of the current record, TI continues to manufacture it. If you are qualifying this into a long-life industrial or test-equipment BOM, it is worth monitoring TI's PCN feed for any future EOL notification.