ICS83940BY IDT, Integrated Device Technology Inc, ICS83940BY Datasheet - Page 8

• Manufacturer Part Number: ICS83940BY
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Driverr

Specifications of ICS83940BY

• Number Of Clock Inputs: 2
• Output Frequency: 250MHz
• Output Logic Level: LVCMOS/LVTTL
• Operating Supply Voltage (min): 2.375V
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.465V
• Package Type: LQFP
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / Rohs Status: Not Compliant

LVPECL C
The PCLK /nPCLK accepts LVPECL, CML, SSTL and other
differential signals. Both V
and V
examples for the PCLK/nPCLK input driven by the most
common driver types. The input interfaces suggested here
F
F
F
83940BY
IGURE
IGURE
IGURE
3.3V
CMR
3.3V LVPECL
2A. PCLK/
2C.
2E. PCLK/
3.3V
3.3V
input requirements. Figures 2A to 2E show interface
R5
100 - 200
LVPECL
CML
BY A
BY A
PCLK/
BY A
LOCK
R6
100 - 200
CML D
3.3V LVPECL D
3.3V LVPECL D
Zo = 50 Ohm
Zo = 50 Ohm
Zo = 50 Ohm
Zo = 50 Ohm
N
N
I
Zo = 50 Ohm
Zo = 50 Ohm
N
PCLK I
NPUT
PCLK I
PCLK I
RIVER
SWING
I
NTERFACE
NPUT
NPUT
NPUT
C1
C2
3.3V
R1
50
and V
3.3V
R3
125
R1
84
D
D
3.3V
R3
84
D
R1
125
RIVEN
RIVEN
R2
50
RIVER WITH
RIVEN
RIVER
R4
125
OH
R4
84
R2
84
PCLK
nPCLK
R2
125
must meet the V
3.3V
PCLK
nPCLK
HiPerClockS
PCLK/nPCLK
3.3V
PCLK
nPCLK
AC C
3.3V
Input
HiPerClockS
HiPerClockS
PCLK/nPCLK
OUPLE
www.idt.com
LVPECL-
PP
8
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
IGURE
IGURE
3.3V
TO
2B. PCLK/
2D. PCLK/
LVDS
2.5V
-LVCMOS/LVTTL F
SSTL
BY AN
BY A
Zo = 50 Ohm
Zo = 50 Ohm
3.3V LVDS D
SSTL D
Zo = 60 Ohm
Zo = 60 Ohm
N
N
PCLK I
PCLK I
R5
100
RIVER
NPUT
NPUT
2.5V
R3
120
L
R1
120
C1
C2
RIVER
OW
D
D
R4
120
RIVEN
RIVEN
R2
120
3.3V
R3
1K
R1
1K
S
ICS83940
ANOUT
REV. A NOVEMBER 17, 2010
PCLK
nPCLK
KEW
R4
1K
R2
1K
3.3V
PCLK
nPCLK
HiPerClockS
PCLK/nPCLK
, 1-
3.3V
B
HiPerClockS
PCL K/n PC LK
TO
UFFER
-18