AK8180B Datasheet, PDF (1/12 Pages) Asahi Kasei Microsystems – 2.5V, 3.3V LVCMOS 1:9 Clock Fanout Buffer

AK8180B
2.5V, 3.3V LVCMOS 1:9
Clock Fanout Buffer
AK8180B
Features
9 LVCMOS outputs
Selectable LVCMOS inputs
2.5V or 3.3V power supply
Clock frequency up to 350MHz
Output-to-output skew : 150ps max
Synchronous output stop in logic state
High-impedance output control
Drive up to 18 series terminated clock lines
Operating Temperature Range: -40 to +85℃
Package: 32-pin LQFP (Pb free)
Pin compatible with MPC9447
Description
The AK8180B is a member of AKM’ｓ LVCMOS
clock fanout buffer family designed for telecom,
networking and computer applications, requiring a
range of clocks with high performance and low
skew. The AK8180B distributes 9 buffered clocks
up to 350MHz. The 9 outputs can drive terminated
50 W clock lines. The CLK_STOP control allows
the output signal to start and stop only in a logic
low state. The OE control sets the outputs to
high-impedance mode.
AK8180B are derived from AKM’ｓ long-term-
experienced clock device technology, and enable
clock output to perform low skew. The AK8180B is
available in a 7mm x 7mm 32-pin LQFP package.
Block Diagram
CCLK0
0
Q0
CCLK1
GND
1
GND
CLK
STOP
Q1
Q2
VDD
Q3
CLK_SEL
Q4
Q5
VDD
Q6
CLK_STOP
SYNC
Q7
Q8
VDD
OE
All pull-up/down resisters = 25k
MS1301-E-00
-1-
May-2011