SK4401
Quad Buffer/Receiver
HIGH-PERFORMANCE PRODUCTS
Description
ꢀeatures
•
Quad Buffer/Receiver
2 GHz Fmax
4.5V / 5.2V Compatible
Available in 32 lead, 5mm X5mm, TQFP
Package
The SK4401 is an extremely fast, stable and accurate
low skew quad buffer or cable driver / receiver. It can
asychronously pass four distinct signals, or it can
resynchronize them to a common clock. In addition, all
four outputs may be asynchronously enabled or
disabled. All of the D flip-flops are triggered on the
rising edge of the CLK input.
•
•
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Application Notes
The SK4401 uses open emitter outputs with a double
amplitude swing suitable for the following applications:
• TTL compatible destinations
AN1001 - EPIC Family Product Line
AN1003 - Termination Techniques for ECL /
LVECL / PECL / LVPECL Devices
AN1004 - Interfacing Between LVDS and ECL /
LVECL / PECL / LVPECL
• Double termination situations that require a
full swing at the destination
• Long cables
Input Options
ꢀunctional Block Diagram
Open
IN<0 - 3>
IN0
1
OUT0
IN0*
OUT0*
IN<0 - 3>*
D
Q
0
D* Q*
Output Options
IN1
1
0
OUT1
OUT1*
IN1*
D
Q
Open Emitter
Q*
D*
VCC
IN2
1
0
OUT2
IN2*
OUT2*
Q
D
Q*
D*
OUT
OUT*
IN3
1
0
OUT3
IN3*
OUT3*
D
Q
Q*
D*
Pin Description
CLK
CLK*
SEL*
SEL
EN
EN*
V
CC
V
CC
OUT1*
OUT1
SEL
SEL*
V
V
EE
EE
CLK*
CLK
Package Information
OUT2
EN
OUT2*
EN*
V
CC
VCC
32 pin, 5 mm X 5 mm
TQFP Package
Revision 1/July 10, 2002
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SEMTECH [ SEMTECH CORPORATION ]
