There are three main advantages of Low-Power HCSL outputs over traditional current-mode outputs. The first advantage is a reduced supply current. Where a traditional HCSL output current consumption is approximately 15mA, the LP-HCSL output drivers are approximately 7.5mA with the current going down to 0mA once the signal reflects back to the driver. The second advantage is that the LP-HCSL I/O current can be supplied from a voltage rail as low as 1.05V, further reducing the current levels. The third advantage is that only two termination resistors are needed compared to the four required by traditional HCSL outputs. Variants of this output can even integrate all of these resistors. This will reduce the BOM cost and required board space of a system design.

