87354AMILFT IDT, Integrated Device Technology Inc, 87354AMILFT Datasheet - Page 6

• Manufacturer Part Number: 87354AMILFT
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Dividerr

Specifications of 87354AMILFT

• Number Of Clock Inputs: 1
• Mode Of Operation: Differential
• Output Logic Level: LVPECL
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.465V
• Package Type: SOIC N
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 8
• Lead Free Status / RoHS Status: Compliant

W
Figure 1 shows how the differential input can be wired to accept
single ended levels. The reference voltage V_REF = V
generated by the bias resistors R1, R2 and C1. This bias circuit
should be located as close as possible to the input pin. The ratio
R
I
LVCMOS C
All control pins have internal pull-ups or pull-downs; additional
resistance is not required but can be added for additional
protection. A 1k
87354AMI
NPUTS
ECOMMENDATIONS FOR
IRING THE
:
ONTROL
D
IFFERENTIAL
resistor can be used.
P
INS
:
U
F
NUSED
I
IGURE
NPUT TO
Single Ended Clock Input
1. S
I
NPUT
A
A
INGLE
PPLICATION
CCEPT
P
INS
E
C1
0.1u
NDED
V_REF
S
INGLE
CC
www.idt.com
S
/2 is
IGNAL
E
6
I
NDED
NFORMATION
of R1 and R2 might need to be adjusted to position the V_REF in
the center of the input voltage swing. For example, if the input
clock swing is only 2.5V and V
and R2/R1 = 0.609.
D
1K
R1
1K
R2
RIVING
VCC
L
EVELS
CLK
nCLK
D
IFFERENTIAL
3.3V LVPECL C
I
NPUT
÷4/÷5 D
CC
= 3.3V, V_REF should be 1.25V
LOCK
ICS87354I
IFFERENTIAL
REV. A AUGUST 5, 2010
G
ENERATOR
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TO
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