5T93GL10NLI IDT, Integrated Device Technology Inc, 5T93GL10NLI Datasheet - Page 11

• Manufacturer Part Number: 5T93GL10NLI
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Driverr

Specifications of 5T93GL10NLI

• Number Of Clock Inputs: 2
• Mode Of Operation: Differential
• Output Frequency: 650MHz
• Output Logic Level: LVDS
• Operating Supply Voltage (min): 2.3V
• Operating Supply Voltage (typ): 2.5V
• Operating Supply Voltage (max): 2.7V
• Package Type: VFQFPN
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 40
• Quiescent Current: 295mA
• Lead Free Status / RoHS Status: Not Compliant

FSEL Operation for When Opposite Clock Dies
1. When the differential on the non-selected clock goes below the minimum DC differential, the outputs clock goes to an unknown state.
When this happens, the FSEL pin should be asserted in order to force selection of the new input clock. The output clock will start up after
a number of cycles of the newly-selected input clock.
2. The FSEL pin should stay asserted until the problem with the dead clock can be fixed in the system.
3. It is recommended that the FSEL be tied LOW for systems that use only one input. If this is not possible, the user must guarantee that
the unused input have a differential greater than or equal to the minimum DC differential specified in the datasheet.
Selection of Input While Protecting Against When Opposite Clock Dies
1. If the user holds FSEL HIGH, the output will not be affected by the deselected input clock.
2. The output will immediately be driven to LOW once FSEL is asserted. This may cause glitching on the output. The output will restart
with the input clock selected by the SEL pin.
3. If the user decides to switch input clocks, the user must de-assert FSEL, then assert FSEL after toggling the SEL input pin. The output
will be driven LOW and will restart with the input clock selected by the SEL pin.
IDT™ LVDS GLITCHLESS CLOCK BUFFER TERABUFFER™ II
Qn - Qn
IDT5T93GL10
2.5V LVDS 1:10 GLITCHLESS CLOCK BUFFER TERABUFFER™ II
A
A
FSEL
1
2
SEL
- A
- A
1
2
11
IDT5T93GL10 REV. A MARCH 18, 2009
+V
V
-V
+V
V
-V
+V
V
-V
V
V
V
V
V
V
DIF
DIF
DIF
DIF
DIF
DIF
THI
THI
IH
IL
IH
IL
DIF
DIF
DIF
=0
=0
=0