ICS889874AK IDT, Integrated Device Technology Inc, ICS889874AK Datasheet - Page 11

• Manufacturer Part Number: ICS889874AK
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Dividerr

Specifications of ICS889874AK

• Number Of Clock Inputs: 1
• 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
• Package Type: VFQFN
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Signal Type: CML/LVDS/LVPECL
• Mounting: Surface Mount
• Pin Count: 16
• Lead Free Status / RoHS Status: Not Compliant

889874AK
T
Figure 7A and Figure 7B show examples of termination for
2.5V LVPECL driver. These terminations are equivalent to ter-
minating 50Ω to V
ERMINATION FOR
F
VCC=2.5V
VCC=2.5V
IGURE
F
2,5V LVPECL
Driv er
2,5V LVPECL
Driv er
IGURE
7A. 2.5V LVPECL D
7C. 2.5V LVPECL T
Integrated
Circuit
Systems, Inc.
Zo = 50 Ohm
Zo = 50 Ohm
Zo = 50 Ohm
Zo = 50 Ohm
CC
- 2V. For V
2.5V LVPECL O
RIVER
CC
= 2.5V, the V
2.5V
R1
250
ERMINATION
R2
62.5
R1
50
T
ERMINATION
R3
250
www.icst.com/products/hiperclocks.html
UTPUT
R4
62.5
R2
50
PRELIMINARY
E
CC
XAMPLE
+
-
+
-
- 2V is very
E
2.5V
XAMPLE
2.5V
11
D
close to ground level. The R3 in Figure 7B can be eliminated
and the termination is shown in Figure 7C.
IFFERENTIAL
F
VCC=2.5V
IGURE
2,5V LVPECL
Driv er
7B. 2.5V LVPECL D
Zo = 50 Ohm
Zo = 50 Ohm
-
TO
-LVPECL B
RIVER
R1
50
ICS889874
T
ERMINATION
UFFER
R2
50
R3
18
REV. A MARCH 20, 2006
/D
+
-
E
2.5V
XAMPLE
IVIDER
1:2