SLVSA55B November 2009 – November 2016 TPD4S1394
PRODUCTION DATA.
TPD4S1394 is a FireWire interface part that complies to the IEEE 1394 standard. The device has ESD protection for four high-speed data lines that pass 6-kV IEC61000-4-2 standard. Each dataline's I/O capacitance associated with the ESD cell is minimal and supports high data rate. There is a live insertion detection circuit integrated in TPD4S1394. During the live insertion event if there is a floating GND or a high-level signal at D+ or D–, the FWPWR_EN is driven low, disabling the external FireWire power switch.
TPD4S1394's high-speed ESD cells on the data lines protect the pins from up to ±6-kV IEC 61000-4-2 contact discharge. The live insertion protection circuit detects improper voltages on the data lines and turn off the FireWire port power switch during an abnormal condition.
The TPD4S1394's D1+, D1–, D2+, and D2– pins are a passive-integrated circuit that activates when voltages exceed the forward voltage plus VCLMP or fall below the lower diodes forward voltage (–0.6 V). VCC must be within recommended voltage range for live insertion detection circuit to work correctly.