900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




NXP Semiconductors Electronic Components Datasheet

PCK9447 Datasheet

LVCMOS clock fan-out buffer

No Preview Available !

www.DataSheet4U.com
PCK9447
3.3 V/2.5 V 1 : 9 LVCMOS clock fan-out buffer
Rev. 01 — 13 October 2005
Product data sheet
1. General description
The PCK9447 is a 3.3 V or 2.5 V compatible, 1 : 9 clock fan-out 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.
The PCK9447 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
near zero skew. The output 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 PCK9447 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, thus eliminating 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 40 °C to +85 °C. The PCK9447 is pin and function compatible but
performance-enhanced to the PCK947.
2. Features
s 9 LVCMOS compatible clock outputs
s 2 selectable, LVCMOS compatible inputs
s Maximum clock frequency of 350 MHz
s Maximum clock skew of 150 ps
s Synchronous output stop in logic LOW state eliminates output runt pulses
s High-impedance output control
s 3.3 V or 2.5 V power supply
s Drives up to 18 series terminated clock lines
s Tamb = 40 °C to +85 °C
s Available in LQFP32 package
s Supports clock distribution in networking, telecommunications and computer
applications
s Pin and function compatible to PCK947


NXP Semiconductors Electronic Components Datasheet

PCK9447 Datasheet

LVCMOS clock fan-out buffer

No Preview Available !

Philips Semiconductors
PCK9447
3.3 V/2.5 V 1 : 9 LVCMOS clock fan-out buffer
3. Ordering information
Table 1: Ordering information
Type number Package
Name
Description
PCK9447BD
LQFP32
plastic low profile quad flat package; 32 leads;
body 7 × 7 × 1.4 mm
4. Functional diagram
Version
SOT358-1
CCLK0
PCK9447
VCC
25 k
60 k
0
CCLK1
CLK_SEL
CLK_STOP
VCC
25 k
VCC
25 k
1
VCC
25 k
OE
Fig 1. Functional diagram of PCK9447
CLK
STOP
SYNC
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
002aaa716
9397 750 12522
Product data sheet
Rev. 01 — 13 October 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
2 of 17


Part Number PCK9447
Description LVCMOS clock fan-out buffer
Maker NXP
PDF Download

PCK9447 Datasheet PDF






Similar Datasheet

1 PCK9446 LVCMOS clock fan-out buffer
NXP
2 PCK9447 LVCMOS clock fan-out buffer
NXP
3 PCK9448 LVCMOS 1 : 12 clock fan-out buffer
NXP





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy