ICS8547AY IDT, Integrated Device Technology Inc, ICS8547AY Datasheet - Page 8

• Manufacturer Part Number: ICS8547AY
• Description: IC CLK BUFFER DIFF-LVDS 48-LQFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: HiPerClockS™r
• Type: Fanout Buffer (Distribution)r

Specifications of ICS8547AY

• Number Of Circuits: 6
• Ratio - Input:output: 1:2
• Differential - Input:output: Yes/Yes
• Input: HCSL, LVDS, LVHSTL, LVPECL, SSTL
• Output: LVDS
• Frequency - Max: 700MHz
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Frequency-max: 700MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 800-1187; 8547AY

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
ICS8547AY
W
IRING THE
D
IFFERENTIAL
I
F
NPUT TO
IGURE
1. S
A
A
CLK_IN
PPLICATION
www.icst.com/products/hiperclocks.html
CCEPT
INGLE
0.1uF
C1
E
S
NDED
INGLE
DD
/2 is
S
IGNAL
R1
1K
V_REF
R2
1K
E
8
I
NDED
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.
NFORMATION
D
V
DD
RIVING
D
+
-
L
IFFERENTIAL
EVELS
D
IFFERENTIAL
-
TO
I
NPUT
H
-LVDS C
DD
EX
= 3.3V, V_REF should be 1.25V
, L
OW
LOCK
S
REV. A FEBRUARY 4, 2003
ICS8547
KEW
B
, 1-
UFFERS
TO
-2