Datasheet

TLK2711A
SLLS908B –JULY 2008–REVISED OCTOBER 2012 www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
DESCRIPTION (CONTINUED)
The TLK2711A has a loss of signal (LOS) detection circuit for conditions where the incoming signal no longer
has a sufficient voltage amplitude to keep the clock recovery circuit in lock.
The TLK2711A allows users to implement redundant ports by connecting receive data bus terminals from two
TLK2711A devices together. Asserting the LCKREFN to a low state will cause the receive data bus terminals,
RXD[0:15], RXCLK, RKLSB, and RKMSB to go to a high-impedance state. This places the device in a transmit-
only mode since the receiver is not tracking the data.
The TLK2711A uses a 2.5-V supply. The I/O section is 3 V compatible. With the 2.5-V supply the chipset is very
power efficient, consuming less than 450 mW typically. The TLK2711A is characterized for operation from –40°C
to 85°C (RCP only).
The TLK2711A is designed to be hot-plug capable. An on-chip power-on reset circuit holds the RXCLK low and
goes to high impedance on the parallel side output signal terminals as well as TXP and TXN during power up.
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