JAJSFY7G February 2012 – August 2018 LMK00304
PRODUCTION DATA.
The differential output buffer type for both Bank A and B outputs are configured using the CLKout_TYPE[1:0] as shown in Table 4. For applications where all differential outputs are not needed, any unused output pin should be left floating with a minimum copper length (see note below) to minimize capacitance and potential coupling and reduce power consumption. If all differential outputs are not used, it is recommended to disable (Hi-Z) the banks to reduce power. Refer to Termination and Use of Clock Drivers for more information on output interface and termination techniques.
NOTE
For best soldering practices, the minimum trace length for any unused pin should extend to include the pin solder mask. This way during reflow, the solder has the same copper area as connected pins. This allows for good, uniform fillet solder joints helping to keep the IC level during reflow.
CLKout_
TYPE1 |
CLKout_
TYPE0 |
CLKoutX BUFFER TYPE
(BANK A and B) |
---|---|---|
0 | 0 | LVPECL |
0 | 1 | LVDS |
1 | 0 | HCSL |
1 | 1 | Disabled (Hi-Z) |