1
Precision EdgeTM
SY58019U
Micrel
M0643-012704
DESCRIPTION
s
Guaranteed AC performance over temperature and
voltage:
DC to 10.7Gbps data throughput
DC to > 7GHz f
MAX
(clock)
< 240ps propagation delay
< 70ps t
r
/ t
f
times
s
Ultra-low crosstalk-induced jitter: 0.7ps
rms
s
Ultra-low jitter design:
< 1ps
rms
random jitter
< 10ps
p-p
deterministic jitter
< 10ps
p-p
total jitter (clock)
s
Unique input termination and V
T
pin accepts DC-
coupled and AC-coupled inputs (CML, PECL, LVDS)
s
400mV (100k) LVPECL output swing
s
Power supply 2.5V
5% or 3.3V
10%
s
40
C to +85
C temperature range
s
Available in 16-pin (3mm
3mm) MLFTM package
FEATURES
ULTRA-PRECISION
DIFFERENTIAL 400mV LVPECL 2:1
MUX with INTERNAL TERMINATION
Precision EdgeTM
SY58019U
APPLICATIONS
s Redundant clock distribution
s
OC-3 to OC-192 SONET/SDH clock/data distribution
s
Loopback
s
Fibre Channel distribution
Rev.: A
Amendment: /0
Issue Date:
Jan. 2004
The SY58019U is a 2.5V/3.3V precision, high-speed, 2:1
differential MUX capable of handling clocks up to 7GHz
and data up to 10.7Gbps.
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 outputs are 400mV, 100k
compatible, LVPECL, with extremely fast rise/fall times
guaranteed to be less than 70ps.
The SY58019U 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 SY58017U or for 800mV
LVPECL outputs the SY58018U. The SY58019U is part of
Micrel's high-speed, Precision EdgeTM product line.
All support documentation can be found on Micrel's web
site at www.micrel.com.
FUNCTIONAL BLOCK DIAGRAM
TYPICAL PERFORMANCE
Precision Edge is a trademark of Micrel, Inc.
AnyGate is a registered trademark of Micrel, Inc.
Micro
LeadFrame and MLF are trademarks of Amkor Technology, Inc.
Precision EdgeTM
Q0
/Q0
IN0
/IN0
V
T0
50
50
IN1
/IN1
V
T1
50
50
0
1
MUX
SEL
(TTL/CMOS)
S
10.7Gbps Output
TIME (20ps/div.)
(2
23
1PRBS)
Output
Swing
(100mV/div
.)
2
Precision EdgeTM
SY58019U
Micrel
M0643-012704
PACKAGE/ORDERING INFORMATION
Ordering Information
(1)
Package
Operating
Package
Part Number
Type
Range
Marking
SY58019UMI
MLF-16
Industrial
019U
SY58019UMITR
(2)
MLF-16
Industrial
019U
Notes:
1. Contact factory for die availability. Dice are guaranteed at T
A
= 25
C,
DC electricals only.
2. Tape and Reel.
Pin Number
Pin Name
Pin Function
1, 2
IN0, /IN0
Differential Input: These input pairs are the differential signal inputs to the device. They
3, 4
IN1, /IN1
accept differential AC- or DC-coupled signals as small as 100mV. Each pin of a pair internally
terminates to a V
T
pin through 50
. Note that these inputs will default to an indeterminate
state if left open. Please refer to the
"Input Interface Applications"
section for more details.
16, 5
VT0, VT1
Input Termination Center-Tap: Each side of the differential input pair terminates to a V
T
pin. The V
T0
and V
T1
pins provide a center-tap to a termination network for maximum
interface flexibility. See
"Input Interface Applications"
section for more details.
6
SEL
This single-ended TTL/CMOS compatible input selects the inputs to the multiplexer. Note
that this input is internally connected to a 25k
pull-up resistor and will default to a logic
HIGH state if left open.
7
NC
No connect.
8, 13
VCC
Positive Power Supply: Bypass with 0.1
F
0.01
F low ESR capacitors. 0.01
F capacitor
should be as close to V
CC
pin as possible.
12, 9
Q, /Q
Differential Outputs: This 100k compatible LVPECL output pair is the output of the device.
Terminate through 50
to V
CC
2V. See
"Output Interface Applications"
section. It is a
logic function of the IN0, IN1, and SEL inputs. Please refer to the
"Truth Table"
for details.
10, 11, 14, 15
GND,
Ground. Ground pins and exposed pad must be connected to the same ground plane.
Exposed Pad
PIN DESCRIPTION
1
2
3
4
12
11
10
9
16 15 14 13
5
6
7
8
IN0
/IN0
IN1
/IN1
Q
GND
GND
/Q
VCC
GND
GND
VT0
VCC
NC
SEL
VT1
16-Pin MLFTM
TRUTH TABLE
SEL
Output
0
CH0 Input Selected
1
CH1 Input Selected
3
Precision EdgeTM
SY58019U
Micrel
M0643-012704
Absolute Maximum Ratings
(1)
Power Supply Voltage (V
CC
) ...................... 0.5V to +4.0V
Input Voltage (V
IN
) ......................................... 0.5V to V
CC
LVPECL Output Current (I
OUT
)
Continuous ............................................................. 50mA
Surge .................................................................... 100mA
Termination Current
(3)
Source or Sink Current on V
T
pin .......................
100mA
Input Current
Source or Sink Current on IN, /IN pin ...................
50mA
Lead Temperature (soldering, 10 sec.) ..................... 265
C
Storage Temperature Range (T
S
) ........... 65
C to +150
C
Operating Ratings
(2)
Power Supply Voltage (V
CC
) ............... +2.375V to +2.625V
............................................................ +3.0V to +3.6V
Ambient Temperature Range (T
A
) ............. 40
C to +85
C
Package Thermal Resistance
(4)
MLFTM (
JA
)
Still-Air ............................................................. 60
C/W
MLFTM (
JB
)
Junction-to-Board ............................................ 38
C/W
Symbol
Parameter
Condition
Min
Typ
Max
Units
V
CC
Power Supply Voltage
V
CC
= 2.5V
2.375
2.5
2.625
V
V
CC
= 3.3V
3.0
3.3
3.6
V
I
CC
Power Supply Current
No load, max. V
CC
55
70
mA
R
DIFF_IN
Differential Input Resistance
80
100
120
(IN0-to-/IN0, IN1-to-/IN1)
R
IN
Input Resistance
40
50
60
(IN0-to-V
T0
, /IN0-to-V
T0
,
IN1-to-V
T1
, /IN1-to-V
T1
)
V
IH
Input HIGH Voltage
Note 6
V
CC
1.6
V
CC
V
(IN0, /IN0, IN1, /IN1)
V
IL
Input LOW Voltage
0
V
IH
0.1
V
(IN0, /IN0, IN1, /IN1)
V
IN
Input Voltage Swing
See Figure 1a
100
1700
mV
(IN0, /IN0, IN1, /IN1)
V
DIFF_IN
Differential Input Voltage Swing
See Figure 1b
200
mV
|IN0, /IN0|, |IN1, /IN1|
V
T IN
IN to V
T
1.28
V
(IN0, /IN0, IN1, /IN1)
Notes:
1. Permanent device damage may occur if
"Absolute Maximum Ratings"
are exceeded. This is a stress rating only and functional operation is not
implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to
"Absolute Maximum Ratings"
conditions for
extended periods may affect device reliability.
2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings.
3. Due to the limited drive capability, use for input of the same package only.
4. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the device's most negative potential (GND) on the PCB.
JB
uses
4-layer
JA
in still-air measurement, unless otherwise stated.
5. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.
6. V
IH
(min) not lower than 1.2V.
DC ELECTRICAL CHARACTERISTICS
(5)
T
A
= 40
C to +85
C, unless otherwise stated.
4
Precision EdgeTM
SY58019U
Micrel
M0643-012704
V
CC
= 2.5V
5% or 3.3V
10%; T
A
= 40
C to +85
C; R
L
= 50
to V
CC
2V, unless otherwise stated.
Symbol
Parameter
Condition
Min
Typ
Max
Units
V
OH
Output HIGH Voltage
V
CC
1.145
V
CC
0.895
V
Q, /Q
V
OL
Output LOW Voltage
V
CC
1.545
V
CC
1.295
V
Q, /Q
V
OUT
Output Differential Swing
See Figure 1a
150
400
mV
Q, /Q
V
DIFF_OUT
Differential Output Voltage Swing
See Figure 1b
300
800
mV
Q, /Q
LVPECL OUTPUT DC ELECTRICAL CHARACTERISTICS
(7)
V
CC
= 2.5V
5% or 3.3V
10%; T
A
= 40
C to +85
C
Symbol
Parameter
Condition
Min
Typ
Max
Units
V
IH
Input HIGH Voltage
2.0
V
V
IL
Input LOW Voltage
0.8
V
I
IH
Input HIGH Current
40
A
I
IL
Input LOW Current
300
A
Note:
7. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.
LVTTL/CMOS DC ELECTRICAL CHARACTERISTICS
(7)
5
Precision EdgeTM
SY58019U
Micrel
M0643-012704
V
CC
= 2.5V
5% or 3.3V
10%; T
A
= 40
C to +85
C, R
L
= 50
to V
CC
2V, unless otherwise stated.
Symbol
Parameter
Condition
Min
Typ
Max
Units
f
MAX
Maximum Operating Frequency
NRZ Data
10.7
Gbps
V
OUT
200mV
Clock
7
GHz
t
pd
Differential Propagation Delay
IN-to-Q
90
160
240
ps
SEL-to-Q
50
160
350
ps
t
pd
Tempco
Differential Propagation Delay
75
fs/
C
Temperature Coefficient
t
SKEW
Input-to-Input Skew
Note 9
3
15
ps
Part-to-Part Skew
Note 10
100
ps
t
JITTER
Data
Random Jitter
Note 11
1
ps
rms
Deterministic Jitter
Note 12
10
ps
p-p
Clock
Cycle-to-Cycle Jitter
Note 13
1
ps
rms
Total Jitter
Note 14
10
ps
p-p
Crosstalk-Induced Jitter
Note 15
0.7
ps
rms
t
r
, t
f
Output Rise/Fall Time
20% to 80%, at full swing
20
40
70
ps
Notes:
8.
High frequency AC parameters are guaranteed by design and characterization.
9.
Input-to-input skew is the difference in time from an input-to-output in comparison to any other input-to-output. In addition, the input-to-input skew
does not include the output skew.
10. Part-to-part skew is defined for two parts with identical power supply voltages at the same temperature and with no skew of the edges at the
respective inputs.
11. RJ is measured with a K28.7 comma detect character pattern, measured at 2.5Gbps/3.2Gbps.
12. DJ is measured at 2.5Gbps/3.2Gbps, with both K28.5 and 2
23
1 PRBS pattern.
13. Cycle-to-cycle jitter definition: the variation of periods between adjacent cycles, T
n
T
n1
where T is the time between rising edges of the output
signal.
14. Total jitter definition: with an ideal clock input of frequency
f
MAX
, no more than one output edge in 10
12
output edges will deviate by more than the
specified peak-to-peak jitter value.
15. Crosstalk is measured at the output while applying two similar frequencies that are asynchronous with respect to each other at the inputs.
AC ELECTRICAL CHARACTERISTICS
(8)
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