SK4400
Quad Buffer/Receiver
HIGH-PERFORMANCE PRODUCTS
Description
ꢀeatures
•
Quad Buffer/Receiver
3 GHz Fmax
3.3V / 5.2V Compatible
Available in 32 lead, 5mm X5mm, TQFP
Package
The SK4400 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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•
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Application Notes
The SK4400 uses standard open emitter ECL outputs
optimized for:
AN1001 - EPIC Family Product Line
AN1003 - Termination Techniques for ECL /
LVECL / PECL / LVPECL Devices
AN1004 - Interfacing Between LVDS and ECL /
LVECL / PECL / LVPECL
• Standard, general purpose ECL applications
• Multiple destinations (daisy chain).
ꢀunctional Block Diagram
Input Options
IN0
1
Open
OUT0
IN0*
OUT0*
D
Q
0
IN<0 - 3>
D* Q*
IN<0 - 3>*
IN1
1
0
OUT1
OUT1*
IN1*
D
Q
Output Options
Q*
D*
Open Emitter
IN2
VCC
1
0
OUT2
IN2*
OUT2*
Q
D
Q*
D*
OUT
IN3
OUT*
1
0
OUT3
IN3*
OUT3*
D
Q
Q*
D*
Pin Description
CLK
CLK*
SEL*
SEL
EN
EN*
VCC
V
CC
OUT1*
OUT1
SEL
SEL*
Package Information
V
EE
EE
CLK*
CLK
V
OUT2
EN
OUT2*
EN*
V
CC
V
CC
32 pin, 5 mm X 5 mm
TQFP Package
Revision 1/July 10, 2002
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SEMTECH [ SEMTECH CORPORATION ]
