SY58030U Datasheet, PDF (1/11 Pages) Micrel Semiconductor – ULTRA PRECISION, 400mV DIFFERENTIAL LVPECL 4:1 MUX with 1:2 FANOUT and INTERNAL TERMINATION

Micrel, Inc.
ULTRA PRECISION, 400mV
DIFFERENTIAL LVPECL 4:1 MUX with 1:2
Precision Edge^®
Precision E^Sd^Y5g⁸e^0®30U
FANOUT and INTERNAL TERMINATION
SY58030U
FEATURES
„ Selects 1 of 4 differential inputs
„ Provides two copies of the selected input
„ Guaranteed AC performance over temperature and
voltage:
• DC-to- > 10.7Gbps data rate throughput
• < 340ps IN-to-Out t_pd
• < 80ps t_r / t_f times
„ Ultra low-jitter design:
• < 10ps_PP total jitter (clock)
• < 1ps_RMS random jitter
• < 10ps_PP deterministic jitter
• < 0.7ps_RMS crosstalk-induced jitter
„ Unique patended input design minimizes crosstalk
„ Accepts an input signal as low as 100mV
„ Unique patended input termination and V_T pin
accepts DC-coupled and AC-coupled inputs (CML,
LVPECL, LVDS)
„ 400mV 100k LVPECL output swing
„ Power supply 2.5V ±5% or 3.3V ±10%
„ –40°C to +85°C temperature range
„ Available in 32-pin (5mm ∞ 5mm) MLF^® package
APPLICATIONS
Precision Edge^®
DESCRIPTION
The SY58030U is a 2.5V/3.3V precision, high-speed, 4:1
differential multiplexer with 400mV LVPECL outputs, capable
of handling clocks up to 7GHz and data streams up to
10.7Gbps. In addition, a 1:2 fanout buffer provides two copies
of the selected input.
The differential input includes Micrel’s unique, 3-pin input
termination architecture that allows customers to interface to
any differential signal (AC- or DC-coupled) as small as 100mV
without any level shifting or termination resistor networks in
the signal path. The result is a clean, stub-free, low-jitter
interface solution. The outputs are 400mV LVPECL (100K
temperature compensated) with extremely fast rise/fall times
guaranteed to be less than 80ps.
The SY58030U operates from a 2.5V ±5% supply or a
3.3V ±10% supply and is guaranteed over the full industrial
temperature range of –40°C to +85°C. For applications that
require CML outputs, consider the SY58028U. For 800mV
LVPECL outputs, consider the SY58029U. The SY58030U 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.
„ Redundant clock and/or data distribution
„ All SONET/SDH clock/data distribution
„ Loopback
„ All Fibre Channel distribution
„ All Gigabit Ethernet clock and/or data distribution
TYPICAL PERFORMANCE
2.5Gbps Output (2²³â€”1 PRBS)
FUNCTIONAL BLOCK DIAGRAM
IN0
50Ω
V_T0
50Ω
/IN0
V_REF-AC0
IN1
50Ω
V_T1
50Ω
/IN1
V_REF-AC1
IN2
50Ω
V_T2
50Ω
/IN2
V_REF-AC2
4:1 MUX
0
1:2 Fanout
Q0
1
/Q0
MUX
2
Q1
/Q1
3
TIME (100ps/div.)
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
IN3
50Ω
V_T3
50Ω
/IN3
V_REF-AC3
SEL0 (CMOS/TTL)
SEL1 (CMOS/TTL)
M9999-020707
[e-mail] or [phone]
1
Rev.: C Amendment: /0
Issue Date: February 2007