Micrel, Inc.
3.3V, 1.5GHz
梅
1/
梅
2 DIFFERENTIAL
SY100E222L
Precision Edge
廬
LVECL/LVPECL PROGRAMMABLE CLOCK
SY100E222L
GENERATOR AND 1:15 FANOUT BUFFER
Precision Edge
廬
FEATURES
s
Four programmable output banks and 15 total
LVPECL-compatible differential outputs
s
Pin-compatible, plug-in replacement to
MC100LVE222FA
s
f
MAX
clock = 1.5GHz
s
50ps output-to-output skew
s
Four output banks with independent
梅
1,
梅
2
frequency control
s
100k compatible I/O
s
Power supply 3.3V
鹵
10%
s
鈥?0
擄
C to +85
擄
C temperature range
s
Available in 52-pin LQFP package
Precision Edge
廬
DESCRIPTION
The SY100E222L is a low-skew, low-jitter device capable
of receiving a high-speed LVECL/LVPECL input in either a
single-ended or differential configuration. For single-ended
configurations, a V
BB
output reference is supplied by the
SY100E222L. A 2:1 input multiplexer selects from two
differential input pairs by means of the CLK_SEL input select.
The internal programmable divider for each of the four
banks generates a
梅1
or
梅2
frequency of the selected input.
The
梅1/梅2
divider outputs can be asynchronously
synchronized with the master reset (MR) input so that the
outputs will start out in a known state.
The 15 total outputs are partitioned into four independently
selected output banks in a 2/3/4/6 fanout configuration. Each
of the four banks can independently select the
梅1
or
梅2
output frequency by means of the four separate frequency
select pins (FSELA-FSELD) inputs.
The SY100E222L is pin-for-pin compatible with the
MC100LVE222FA device.
The SY100E222L is part of a Micrel鈥檚 Precision Edge
廬
product family. For other integrated clock divider plus fanout
buffer options, consider Micrel鈥檚 SY89200 family.
All support documentation can be found on Micrel鈥檚 web
site at: www.micrel.com.
FUNCTIONAL BLOCK DIAGRAM
1:2 FOB
CLK_SEL
CLK0
/CLK0
V
BB
CLK1
/CLK1
MR
FSELA
2:1
MUX
CLK
梅2
梅1
2:1
MUX
1:3 FOB
QA0
/QA0
QA1
/QA1
QB0
/QB0
QB1
/QB1
2:1
MUX
1:4 FOB
QB2
/QB2
QC0
FSELB
/QC0
QC1
/QC1
QC2
2:1
MUX
/QC2
QC3
/QC3
FSELC
1:6 FOB
CROSS REFERENCE TABLE
Micrel Part Number
SY100E222LTI
SY100E222LTI TR
ON Semiconductor
MC100LVE222FA
MC100LVE222FAR2
QD0
/QD0
QD1
2:1
MUX
/QD1
QD2
/QD2
APPLICATIONS
s
SONET/SDH channel applications
s
Fibre Channel multi-channel applications
s
Gigabit Ethernet multi-channel applications
FSELD
QD3
/QD3
QD4
/QD4
QD5
/QD5
Precision Edge is a registered trademark of Micrel, Inc.
M9999-111605
hbwhelp@micrel.com or (408) 955-1690
Rev.: B
Amendment: /0
1
Issue Date: November 2005
MICREL
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