87949AYILF IDT, Integrated Device Technology Inc, 87949AYILF Datasheet - Page 8

• Manufacturer Part Number: 87949AYILF
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Dividerr

Specifications of 87949AYILF

• Number Of Clock Inputs: 3
• Output Frequency: 160MHz
• Output Logic Level: LVCMOS/LVTTL
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Package Type: LQFP
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 52
• Lead Free Status / RoHS Status: Compliant

F
87949AYI
LVPECL C
The PCLK /nPCLK accepts LVPECL, CML, SSTL and other
differential signals. Both V
V
interface examples for the PCLK/nPCLK input driven by the
most common driver types. The input interfaces suggested
F
F
IGURE
PP
IGURE
IGURE
and V
1A.
1C.
1E.
3.3V
3.3V
CMR
2.5V
LVPECL
CML
BY AN
BY AN
SSTL
PCLK/nPCLK I
PCLK/nPCLK I
input requirements. Figures 1A to 1F show
PCLK/nPCLK I
BY A
LOCK
3.3V LVPECL D
O
Zo = 50 Ohm
Zo = 50 Ohm
SSTL D
I
Zo = 50 Ohm
Zo = 50 Ohm
PEN
Zo = 60 Ohm
Zo = 60 Ohm
NPUT
C
OLLECTOR
I
RIVER
NTERFACE
SWING
NPUT
NPUT
NPUT
3.3V
R1
50
2.5V
R3
120
3.3V
R3
125
R1
120
R1
84
and V
D
D
D
R2
50
R4
120
RIVER
RIVEN
RIVEN
CML D
RIVEN
R2
120
R4
125
R2
84
PCLK
nPCLK
OH
3.3V
PCLK
nPCLK
PCLK
nPCLK
3.3V
must meet the
HiPerClockS
PCLK/nPCLK
RIVER
3.3V
HiPerClockS
PCLK/nPCLK
Input
HiPerClockS
www.idt.com
8
here are examples only. If the driver is from another
vendor, use their termination recommendation. Please
consult with the vendor of the driver component to confirm
the driver termination requirements.
F
F
F
IGURE
IGURE
IGURE
3.3V
3.3V
3.3V
3.3V LVPECL
1B. PCLK/nPCLK I
1D. PCLK/nPCLK I
1F. PCLK/nPCLK I
LVDS
CML Built-In Pullup
R5
100 - 200
BY A
BY A
BY A
Zo = 50 Ohm
Zo = 50 Ohm
B
3.3V LVPECL D
3.3V LVDS D
R6
100 - 200
UILT
Zo = 50 Ohm
Zo = 50 Ohm
-I
R5
100
N
Zo = 50 Ohm
Zo = 50 Ohm
P
ULLUP
NPUT
NPUT
NPUT
C1
C2
RIVER
C1
C2
L
C
CML D
D
D
D
3.3V
R3
84
OW
RIVER WITH
R1
125
RIVEN
RIVEN
RIVEN
R1
100
LOCK
3.3V
R3
1K
ICS87949I
R1
1K
R4
84
S
R2
125
R4
1K
PCLK
nPCLK
RIVER
KEW
R2
1K
3.3V
REV. C AUGUST 5, 2010
G
AC C
PCLK
nPCLK
HiPerClockS
PCLK/nPCLK
PCLK
nPCLK
ENERATOR
3.3V
, ÷1, ÷2
3.3V
HiPerClockS
PCL K/n PC LK
OUPLE
HiPerClockS
PCLK/nPCLK