
10
Integrated
Circuit
Systems, Inc.
ICS932S431A
Datasheet
1426A—11/12/09
Single-ended Output Terminations
Test Load
CL=5pF
Rs
Zo
ICS932S431A
SEPP Output Buffer
(Single Ended
Push Pull)
Rs
Zo
Rs
Zo
SEPP Output Buffer
(Single Ended
Push Pull)
CL=5pF
The singled-ended outputs of the ICS 932S4231A default to a drive strength of 2
loads. The REF clocks can be turned down to 1-load strength via the SMBus.
Suggested termination resistors are as follows for transmission lines with Zo =
50 ohms:
Driving 1 load, Rs = 33 ohms
Driving 2 loads, Rs = 7.5 ohms
Single-ended outputs at 1-load strength (REF clock only)
Driving 1 load, Rs = 22 ohms
Single-ended outputs at 2-load strength (Power up default
for all single-ended outputs)