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MPC9447ACR2

P1-P3P4-P6P7-P9P10-P11
DATA SHEET
3.3V, 2.5V, 1:9 LVCMOS Clock Fanout
Buffer
MPC9447
MPC9447 REVISION 9 3/15/16 1 ©2016 Integrated Device Technology, Inc.
The Freescale Semiconductor, Inc. MPC9447 is a 3.3 V or 2.5 V compatible, 1:9 clock
fanout buffer targeted for high performance clock tree applications. With output frequencies up
to 350 MHz and output skews less than 150 ps, the device meets the needs of most demanding
clock applications.
Features
• 9 LVCMOS Compatible Clock Outputs
• 2 Selectable, LVCMOS Compatible Inputs
• Maximum Clock Frequency of 350 MHz
• Maximum Clock Skew of 150 ps
• Synchronous Output Stop in Logic Low State Eliminates Output Runt Pulses
• High-Impedance Output Control
• 3.3 V or 2.5 V Power Supply
• Drives up to 18 Series Terminated Clock Lines
• Ambient Temperature Range -40C to +85C
• 32-Lead LQFP Packaging, Pb-free
• Supports Clock Distribution in Networking, Telecommunications, and Computer
Applications
• Pin and Function Compatible to MPC947
• For drop in replacement use 83947AYILN
Functional Description
MPC9447 is specifically designed to distribute LVCMOS compatible clock signals up to a frequency of 350 MHz. Each output provides a
precise copy of the input signal with a near zero skew. The outputs buffers support driving of 50 terminated transmission lines on the incident
edge. Each is capable of driving either one parallel terminated or two series terminated transmission lines.
Two selectable independent LVCMOS compatible clock inputs are available, providing support of redundant clock source systems. The
MPC9447 CLK_STOP
control is synchronous to the falling edge of the input clock. It allows the start and stop of the output clock signal only
in a logic low state, and thus, eliminates potential output runt pulses. Applying the OE control will force the outputs into high-impedance mode.
All inputs have an internal pull-up or pull-down resistor preventing unused and open inputs from floating. The device supports a 2.5 V or 3.3
V power supply and an ambient temperature range of -40C to +85C. The MPC9447 is pin and function compatible but performance-enhanced
to the MPC947.
AC SUFFIX
32-LEAD LQFP PACKAGE
Pb-FREE PACKAGE
CASE 873A-03
LOW VOLTAGE
3.3 V/2.5 V LVCMOS 1:9
CLOCK FANOUT BUFFER
PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES SEPTEMBER 7, 2016
REVISION 9 3/15/16 2 ©2016 Integrated Device Technology, Inc.
MPC9447 DATA SHEET
Figure 1. Logic Diagram
Figure 2. 32-Lead Pinout (Top View)
0
1
CCLK0
CCLK1
CLK_SEL
CLK_STOP
OE
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
V
CC
V
CC
25k
V
CC
25k
V
CC
CLK
Stop
SYNC
(All input resistors have a value of 25 k
)
GND
Q2
V
CC
Q1
GND
Q0
V
CC
GND
Q6
V
CC
Q7
GND
Q8
GND
Q3
V
CC
Q4
GND
Q5
V
CC
GND
GND
CLK_SEL
CCLK0
CCLK1
CLK_STOP
OE
V
CC
GND
25
26
27
28
29
30
31
32
15
14
13
12
11
10
9
12345678
24 23 22 21 20 19 18 17
16
MPC9447
GND
V
CC
GND
Table 1. Function Table
Control Default 0 1
CLK_SEL 1 CLK0 input selected CLK1 input selected
OE 1 Outputs disabled (high-impedance state)
(1)
1. OE = 0 will high-impedance tristate all outputs independent on CLK_STOP.
Outputs enabled
CLK_STOP 1 Outputs synchronously stopped in logic low state Outputs active
Table 2. Pin Configurations
Pin I/O Type Function
CCLK0 Input LVCMOS Clock Signal Input
CCLK1 Input LVCMOS Alternative Clock Signal Input
CLK_SEL Input LVCMOS Clock Input Select
CLK_STOP Input LVCMOS Clock Output Enable/Disable
OE Input LVCMOS Output Enable/Disable (high-impedance tristate)
Q0–8 Output LVCMOS Clock Outputs
GND Supply Ground Negative Power Supply (GND)
V
CC
Supply V
CC
Positive power supply for I/O and core. All V
CC
pins must be connected to the
positive power supply for correct operation
REVISION 9 3/15/16 3 3.3V, 2.5V, 1:9 LVCMOS CLOCK FANOUT BUFFER
MPC9447 DATA SHEET
Table 3. General Specifications
Symbol Characteristics Min Typ Max Unit Condition
V
TT
Output Termination Voltage V
CC
2 V
MM ESD Protection (Machine model) 200 V
HBM ESD Protection (Human body model) 2000 V
LU Latch-up Immunity 200 mA
C
PD
Power Dissipation Capacitance 10 pF Per output
C
IN
Input Capacitance 4.0 pF Inputs
Table 4. Absolute Maximum Ratings
(1)
1. Absolute maximum continuous ratings are those maximum values beyond which damage to the device may occur. Exposure to these conditions or
conditions beyond those indicated may adversely affect device reliability. Functional operation at absolute-maximum-rated conditions is not implied.
Symbol Characteristics Min Max Unit Condition
V
CC
Supply Voltage –0.3 3.9 V
V
IN
DC Input Voltage –0.3 V
CC
+ 0.3 V
V
OUT
DC Output Voltage –0.3 V
CC
+ 0.3 V
I
IN
DC Input Current 20 mA
I
OUT
DC Output Current 50 mA
T
S
Storage temperature –65 125 C
Table 5. DC Characteristics (V
CC
= 3.3 V ± 5%, T
A
= -40°C to +85°C)
Symbol Characteristics Min Typ Max Unit Condition
V
IH
Input High Voltage 2.0 V
CC
+ 0.3 V LVCMOS
V
IL
Input Low Voltage –0.3 0.8 V LVCMOS
V
OH
Output High Voltage 2.4 V I
OH
= –24 mA
(1)
1. The MPC9447 is capable of driving 50 transmission lines on the incident edge. Each output drives one 50 parallel terminated transmission line to a
termination voltage of V
TT
. Alternatively, the device drives up to two 50 series terminated transmission lines
(for V
CC
= 3.3 V).
V
OL
Output Low Voltage 0.55
0.30
V
V
I
OL
= 24 mA
I
OL
= 12 mA
Z
OUT
Output Impedance 17
I
IN
Input Current
(2)
2. Inputs have pull-down or pull-up resistors affecting the input current.
300 A V
IN
= V
CC
or GND
I
CCQ
Maximum Quiescent Supply Current
(3)
3. I
CCQ
is the DC current consumption of the device with all outputs open and the input in its default state or open.
2.0 mA All V
CC
Pins
P1-P3P4-P6P7-P9P10-P11

MPC9447ACR2

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Clock Buffer FSL 1-9 LVCMOS Fanout Buffe
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