85314BGI-01T IDT, Integrated Device Technology Inc, 85314BGI-01T Datasheet - Page 12

• Manufacturer Part Number: 85314BGI-01T
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Driverr

Specifications of 85314BGI-01T

• Number Of Clock Inputs: 2
• Output Frequency: 700MHz
• Output Logic Level: LVPECL
• Operating Supply Voltage (min): 2.375V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.8V
• Package Type: TSSOP
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 20
• 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 ter-
minating 50
85314BGI-01
ERMINATION FOR
F
VCC=2.5V
VCC=2.5V
IGURE
F
IGURE
2,5V LVPECL
Driv er
2,5V LVPECL
Driv er
5A. 2.5V LVPECL D
5C. 2.5V LVPECL T
to V
CC
Zo = 50 Ohm
Zo = 50 Ohm
Zo = 50 Ohm
Zo = 50 Ohm
- 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
UTPUT
R4
62.5
R2
50
E
CC
D
XAMPLE
+
-
+
-
- 2V is very
E
IFFERENTIAL
XAMPLE
2.5V
2.5V
www.idt.com
12
close to ground level. The R3 in Figure 5B can be eliminated
and the termination is shown in Figure 5C.
-
F
TO
VCC=2.5V
IGURE
-2.5V/3.3V LVPECL F
2,5V LVPECL
Driv er
5B. 2.5V LVPECL D
Zo = 50 Ohm
Zo = 50 Ohm
RIVER
ICS85314I-01
L
R1
50
OW
T
ERMINATION
ANOUT
S
R2
50
R3
18
KEW
REV. F JULY 25, 2010
+
-
, 1-
E
B
2.5V
XAMPLE
UFFER
TO
-5