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PDF SY58031U Data sheet ( Hoja de datos )
| Número de pieza | SY58031U | |
| Descripción | Ultra-precision 1:8 Fanout Buffer | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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Micrel
ULTRA-PRECISION 1:8 FANOUT
BUFFER WITH 400mV CML OUTPUTS
AND INTERNAL I/O TERMINATION
Precision Edge™
Precision ESdYg5e8™031U
SY58031U
FEATURES
s Precision 1:8, 400mV CML fanout buffer
s Guaranteed AC performance over temperature and
Precision Edge™
voltage:
• Clock frequency range: DC to 5GHz
DESCRIPTION
• <65ps tr / tf times
• <300ps tpd
• <20ps skew
s Low-jitter performance:
• <10pspp total jitter (clock)
• <1psrms random jitter
s 50Ω source-terminated CML outputs
The SY58031U is a 2.5V/3.3V precision, high-speed, fully
differential CML 1:8 fanout buffer. The SY58031U is
optimized to provide eight identical output copies with less
than 20ps of skew and less than 10psp-p total jitter. It can
process clock signals as fast as 5GHz.
The differential input includes Micrel’s unique, 3-pin input
termination architecture that allows the SY58031U to directly
s 400mV CML output swing into 50Ω load
interface to CML, LVPECL, and LVDS differential signals
s Fully differential I/O
s Accepts an input signal as low as 100mV
s Unique input termination and VT pin accepts DC-
coupled and AC-coupled differential inputs:
(LVPECL, LVDS, and CML)
s Power supply 2.5V ±5% or 3.3V ±10%
(AC- or DC-coupled) without any level-shifting or termination
resistor networks in the signal path. The result is a clean,
stub-free, low-jitter interface solution. The CML outputs
feature 400mV typical swing into 50Ω loads and provide an
extremely fast rise/fall time guaranteed to be less than 65ps.
The SY58031U operates from a 2.5V ±5% supply or
3.3V ±10% supply and is guaranteed over the full industrial
s Industrial temperature range: –40°C to +85°C
temperature range (–40°C to +85°C). For applications that
s Available in 32-pin (5mm × 5mm) MLF™ packagewww.DataSheerte4Uq.coumire high-speed 1:8 LVPECL fanout buffers, consider
the SY58032U and SY58033U. The SY58031U is part of
Micrel’s high-speed, Precision Edge™ product line.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
APPLICATIONS
s All SONET and all GigE clock distribution
s All Fibre Channel clock and data distribution
s Network routing engine timing distribution
s High-end, low-skew multiprocessor synchronous
clock distribution
Precision Edge is a trademark of Micrel, Inc.
MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.
M9999-022604
[email protected] or (408) 955-1690
FUNCTIONAL BLOCK DIAGRAM
IN
50Ω
VT
50Ω
/IN
VREF-AC
Q0
/Q0
Q1
/Q1
Q2
/Q2
Q3
/Q3
Q4
/Q4
Q5
/Q5
Q6
/Q6
Q7
/Q7
Rev.: A Amendment: /0
1 Issue Date: February 2004
1 page  
Micrel
TYPICAL OPERATING CHARACTERISTICS
VCC = 2.5V, GND = 0, VIN = 100mV, TA = 25°C, unless otherwise stated.
200MHz Output
Precision Edge™
SY58031U
2GHz Output
TIME (600ps/div.)
5GHz Output
TIME (100ps/div.)
Amplitude
vs. Frequency
450
400
350
300
250
200
150
100
50 VIN = 200mV
0
FREQUENCY (MHz)
265
260
255
250
245
240
235
230
225
220
0
Propagation Delay
vs. Input Swing
200 400 600 800 1000
INPUT SWING (mV)
M9999-022604
[email protected] or (408) 955-1690
TIME (25ps/div.)
5
∆ Output-to-Output Skew
vs. Temperature
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-60 -40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
Propagation Delay
vs. Temperature
226
225 VIN = 400mV
224
223
222
221
220
219
218
-60 -40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet SY58031U.PDF ] | |
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