ICS853031AY IDT, Integrated Device Technology Inc, ICS853031AY Datasheet - Page 12

• Manufacturer Part Number: ICS853031AY
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Driverr

Specifications of ICS853031AY

• Number Of Clock Inputs: 2
• Mode Of Operation: Differential
• Output Frequency: >1600MHz
• 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): -3.465/3.465V
• Package Type: LQFP
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / Rohs Status: Not Compliant

T
Figure 5A and Figure 5B show examples of termination for 2.5V
LVPECL driver. These terminations are equivalent to terminating
50
IDT
F
ERMINATION FOR
ICS853031
LOW SKEW, 1-TO-9, DIFFERENTIAL-TO-2.5, 3.3V LVPECL/ECL FANOUT BUFFER
IGURE
VCCO=2.5V
VCCO=2.5V
™
to V
F
/ ICS
IGURE
2,5V LVPECL
Driv er
2,5V LVPECL
Driv er
CC
5A. 2.5V LVPECL D
™
- 2V. For V
1-TO-9, 2.5V, 3.3V LVPECL/ECL FANOUT BUFFER
5C. 2.5V LVPECL T
Zo = 50 Ohm
Zo = 50 Ohm
Zo = 50 Ohm
Zo = 50 Ohm
2.5V LVPECL O
CC
= 2.5V, the V
RIVER
2.5V
R1
250
CC
ERMINATION
R1
50
R2
62.5
- 2V is very close to ground
T
ERMINATION
R3
250
UTPUTS
R2
50
R4
62.5
E
XAMPLE
+
-
+
-
E
2.5V
2.5V
XAMPLE
12
level. The R3 in Figure 5B can be eliminated and the termination
is shown in Figure 5C.
F
IGURE
VCCO=2.5V
2,5V LVPECL
Driv er
5B. 2.5V LVPECL D
Zo = 50 Ohm
Zo = 50 Ohm
ICS853031AY REV. C AUGUST 12, 2008
RIVER
R1
50
T
ERMINATION
R2
50
R3
18
+
-
E
2.5V
XAMPLE