ICS853014BGT IDT, Integrated Device Technology Inc, ICS853014BGT Datasheet - Page 12

• Manufacturer Part Number: ICS853014BGT
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Driverr

Specifications of ICS853014BGT

• Number Of Clock Inputs: 2
• Mode Of Operation: Differential
• Output Frequency: >2000MHz
• Output Logic Level: ECL/LVPECL
• Operating Supply Voltage (min): -2.375/2.375V
• Operating Supply Voltage (typ): -2.5/-3.3/3.3V
• Operating Supply Voltage (max): -3.8/3.8V
• Package Type: TSSOP
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Signal Type: CML/LVDS/LVPECL/SSTL
• Mounting: Surface Mount
• Pin Count: 20
• Lead Free Status / RoHS Status: Not Compliant

Termination for 2.5V LVPECL Outputs
Figure 5A and Figure 5B show examples of termination for 2.5V
LVPECL driver. These terminations are equivalent to terminating
50Ω to V
Figure 5A. 2.5V LVPECL Driver Termination Example
Figure 5C. 2.5V LVPECL Driver Termination Example
IDT™ / ICS™ 2.5V, 3.3V LVPECL/ECL FANOUT BUFFER
ICS853014
LOW SKEW, 1-TO-5, DIFFERENTIAL-TO-2.5V, 3.3V LVPECL/ECL FANOUT BUFFER
V
V
CC
CC
2.5V LVPECL Driver
2.5V LVPECL Driver
= 2.5V
= 2.5V
CC
– 2V. For V
CC
50
50
50
50
= 2.5V, the V
R1
250
2.5V
R2
62.5
R1
50
CC
– 2V is very close to
R3
250
R4
62.5
R2
50
+
–
+
–
2.5V
2.5V
12
ground level. The R3 in Figure 5B can be eliminated and the
termination is shown in Figure 5C.
Figure 5B. 2.5V LVPECL Driver Termination Example
V
CC
2.5V LVPECL Driver
= 2.5V
50
50
ICS853014BG REV. D FEBRUARY 25, 2009
R1
50
R2
50
R3
18
+
–
2.5V