SI5325C-C-GM Datasheet, PDF (97/178 Pages) Silicon Laboratories – ANY-FREQUENCY PRECISION CLOCKS

Si53xx-RM
Si53xx
10 
80 
10 
All resistors are located next to RCVR
Rcvr
Figure 43. Differential Output Example Requiring Attenuation
Si53xx
CKOUTn
CMOS
Logic
Optionally Tie CKOUTn
Outputs Together for Greater Strength
Figure 44. Typical CMOS Output Circuit (Tie CKOUTn+ and CKOUTn– Together)
Unused output drivers should be powered down, per Table 48, or left floating.
The pin-controlled parts have a DBL2_BY pin that can be used to disable CKOUT2.
Table 48. Disabling Unused Output Driver
Output Driver
CKOUT1 and CKOUT2
CKOUT3 and CKOUT4
CKOUT5/FS_OUT
Si5365, Si5366
N/A
DBL34
DBL5/DBL_FS
Si5325, Si5326, Si5327, Si5328,
Si5367, Si5368
Use SFOUT_REG to disable individ-
ual CKOUTn.
Rev. 1.2
97