Microchip SY58023U Bedienungsanleitung
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SY58023U
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Precision Edge
®
SY58023U
Micrel, Inc.
M9999-082807
hbwhelp@micrel.com or (408) 955-1690
DESCRIPTION
■ Guaranteed AC performance over temperature and
voltage:
• >10.7Gbps data throughput
• <60ps t
r
/t
f
times
• <285ps t
pd
(IN-to-Q)
• <20ps skew
■ Low jitter:
• <10ps
pp
total jitter (clock)
• <1ps
rms
random jitter (data)
• <10ps
pp
deterministic jitter (data)
■ Crosstalk induced jitter: <0.7ps
rms
■ Accepts an input signal as low as 100mV
■ Unique input termination and V
T
pin accepts DC-
coupled and AC-coupled differential inputs:
LVPECL, LVDS, and CML
■ 50Ω source terminated CML outputs
■ Fully differential inputs/outputs
■ Power supply 2.5V ±5% and 3.3V ±10%
■ Industrial –40°C to +85°C temperature range
■ Available in 16-pin (3mm
××
××
× 3mm) MLF
®
package
FEATURES
ULTRA-LOW JITTER 2
××
××
× 2 CROSSPOINT
SWITCH w/CML OUTPUTS AND
INTERNAL I/O TERMINATION
Precision Edge
®
SY58023U
Rev.: G Amendment: /0
Issue Date: August 2007
The SY58023U is a 2.5V/3.3V precision, high-speed, fully
differential CML 2 × 2 crosspoint switch. The SY58023U is
optimized to provide two identical output copies with less
than 20ps of skew and ultra-low jitter. It can route clock
signals as fast as 6GHz or data up to 10.7Gbps.
The differential input includes Micrel’s unique, 3-pin input
termination architecture that allows the SY58023U to directly
interface to LVPECL, LVDS, and CML differential signals
(AC- or DC-coupled) as small as 100mV (200mV
pp
) without
any level-shifting or termination resistor networks in the signal
path. The CML outputs features 400mV typical swing into
50Ω loads, and provide an extremely fast rise/fall time
guaranteed to be less than 60ps.
The SY58023U operates from a +2.5V ±5% supply or
+3.3V ±10% supply and is guaranteed over the full industrial
temperature range (–40°C to +85°C). For applications that
require high speed dual CML switches, consider the
SY58024U. The SY58023U is part of Micrel’s high-speed,
Precision Edge
®
product line.
Datasheets and support documentation can be found on
Micrel’s website at www.micrel.com.
Precision Edge is a registered trademark of Micrel , Inc.
Micro
LeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
Precision Edge
®
IN0
/IN0
Q1
/Q1
Q0
/Q0
V
T0
50Ω
50Ω
IN1
/IN1
V
T1
50Ω
50Ω
SEL0
(TTL/CMOS)
SEL1
(TTL/CMOS)
0
1
0
1
FUNCTIONAL BLOCK DIAGRAM
APPLICATIONS
■ Gigabit Ethernet data/clock routing
■ SONET data/clocking routing
■ Switch fabric clock routing
■ Redundant switchover
■ Backplane redundancy
2
Precision Edge
®
SY58023U
Micrel, Inc.
M9999-082807
hbwhelp@micrel.com or (408) 955-1690
PACKAGE/ORDERING INFORMATION
Pin Number Pin Name Pin Function
1, 2, IN0, /IN0, Differential Signal Input: Each pin of this pair internally terminates with 50Ω to the VT pin.
3, 4 /IN1, IN1 Note that this input will default to an indeterminate state if left open.
See “Input Interface Applications” section.
16, 5 VT0, VT1 Input Termination Center-Tap: Each input terminates to this pin. The VT pin provides a
center-tap for each input (IN, /IN) to a termination network for maximum interface
flexibility. See “Input Interface Applications” section.
15, 6 SEL0, SEL1 Select Input: TTL/CMOS select input control that selects inputs IN0, or IN1. Note that this
input is internally connected to a 25kΩ pull-up resistor and will default to a logic High
state if left open.
7, 14 GND, Ground. Exposed pad must be connected to a ground plane that is the same potential as
(Exposed Pad) the device ground pin.
8, 13 VCC Positive Power Supply: Bypass with 0.1µF0.01µF low ESR capacitors as close to the
pins as possible.
12, 11, 10, 9 Q0, /Q0, /Q1, Q1 CML Differential Output Pairs: Differential buffered output copy of the selected input
signal. The CML output swing is typically 400mV across 100Ω. Unused output pairs may
be left floating with no impact on jitter. See “CML Output Termination” section.
PIN DESCRIPTION
13141516
12
11
10
9
1
2
3
4
8765
IN0
/IN0
/IN1
IN1
Q0
/Q0
/Q1
Q1
VT0
SEL0
GND
VCC
VT1
SEL1
GND
VCC
16-Pin MLF
®
(MLF-16)
SEL0 SEL1 Q0 Q1
LLIN0 IN0
LHIN0 IN1
HLIN1 IN0
HHIN1 IN1
TRUTH TABLE
Ordering Information
(1)
Package Operating Package Lead
Part Number Type Range Marking Finish
SY58023UMI MLF-16 Industrial 023U Sn-Pb
SY58023UMITR
(2)
MLF-16 Industrial 023U Sn-Pb
SY58023UMG
(3)
MLF-16 Industrial 023U with Pb-Free
Pb-Free bar-line indicator NiPdAu
SY58023UMGTR
(2, 3)
MLF-16 Industrial 023U with Pb-Free
Pb-Free bar-line indicator NiPdAu
Notes:
1. Contact factory for die availability. Dice are guaranteed at T
A
= 25°C, DC electricals only.
2. Tape and Reel.
3. Pb-Free package recommended for new designs.
Produktspezifikationen
| Marke: | Microchip |
| Kategorie: | Nicht kategorisiert |
| Modell: | SY58023U |
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