This is a triple-cable transceiver/arbiter that fully supports the provisions of IEEE 1394-1995 standard for high performance serial bus
The TSB21LV03C provides analog and digital physical‑layer functions for a three‑port node in an IEEE‑1394‑1995 network. It interfaces to a link‑layer controller and supports 100/200 Mbit/s data rates, optional isolation, and power‑down features for battery‑powered applications.
The device is offered in Plastic Quad Flat‑Pack (PM) and Ceramic Quad Flat‑Pack (HV) packages, operates from a 3.3 V supply, and includes a 24.576 MHz crystal (or external oscillator) feeding a PLL that generates the required 49.152 MHz system clock.
| Operating temperature range (PM) | 0 °C to 70 °C |
|---|---|
| Operating temperature range (IPM) | -40 °C to 85 °C |
| Operating temperature range (CM) | -55 °C to 125 °C |
| System clock frequency | 49.152 MHz |
| External crystal requirement | 24.576 MHz crystal or oscillator |
| PLL reference frequency | 196.608 MHz |
| Supply voltage | 3.3 V |
It provides a 49.152 MHz system clock synchronized with data transfers.
The power‑down mode is activated by asserting the PD input high, which stops the PLL and disables all circuitry except the cable‑not‑active monitor.
An external filter capacitor of approximately 1 µF should be used to stabilize the 1.86‑V bias voltage.