1
Precision EdgeTM
SY89325V
Micrel
M9999-060304
hbwhelp@micrel.com or (408) 955-1690
DESCRIPTION
s
Guaranteed AC performance over temp and voltage:
DC-to >1.5Gbps data rate throughput
>750MHz clock f
MAX
<50ps within-device skew
s
Ultra-low jitter design:
<1ps
rms
random jitter
<10ps
pp
deterministic jitter
<1ps
rms
cycle-to-cycle jitter
<10ps
pp
total jitter (clock)
s
Accepts CML, PECL, LVPECL inputs
s
350mV LVDS output swing
s
Power supply 3.3V
10% or 5.0V
10%
s
40
C to +85
C temperature range
s
Available in ultra-small (2mm
2mm) 8-pin MLFTM
package
FEATURES
3.3V/5V 1.5Gbps DIFFERENTIAL
CML/PECL/LVPECL-to-LVDS
TRANSLATOR
Precision EdgeTM
SY89325V
APPLICATIONS
s
High-speed logic
s
Data communications systems
s
Wireless communications systems
s
Telecom systems
Rev.: A
Amendment: /0
Issue Date:
June 2004
The SY89325V is a fully differential, CML/PECL/LVPECL-
to-LVDS translator. It achieves LVDS signaling up to
1.5Gbps and clock rates of 750MHz, depending of the
distance and the characteristics of the media and noise
coupling sources. LVDS is intended to drive 50
impedance
transmission line media such as PCB traces, backplanes,
or cables.
SY89325V inputs can be terminated with a single resistor
between the true and complement pins of the input.
The SY89325V is a member of Micrel's Precision EdgeTM
family of high-speed logic devices. This family features
ultra-small packaging, high signal integrity, and operation at
many different supply voltages. For applications that require
dual translators, consider the SY55855V.
All support documentation can be found on Micrel's web
site at www.micrel.com.
TYPICAL APPLICATIONS CIRCUIT
FUNCTIONAL BLOCK DIAGRAM
Precision EdgeTM
NC
CML/PECL/LVPECL
Input
IN
/IN
NC
VCC
LVDS Output
Q
/Q
VEE
1
2
3
4
8
7
6
5
8-Pin MLFTM (2mm
2mm)
100mV Input Swing
100mV
Input Waveform
Output Waveform
SY89325V
Backplane
400mV Output Swing
400mV
Precision Edge is a trademark of Micrel, Inc.
Micro
LeadFrame and MLF are trademarks of Amkor Technology, Inc.
2
Precision EdgeTM
SY89325V
Micrel
M9999-060304
hbwhelp@micrel.com or (408) 955-1690
PACKAGE/ORDERING INFORMATION
Ordering Information
(1)
Package
Operating
Package
Part Number
Type
Range
Marking
SY89325VMI
MLF-8
Industrial
325
SY89325VMITR
(2)
MLF-8
Industrial
325
Notes:
1. Contact factory for die availability. Die are guaranteed at T
A
= 25
C,
DC electricals only.
2. Tape and Reel.
Pin Number
Pin Name
Pin Function
2, 3
IN, /IN
Differential Inputs: These input pairs are the differential signal inputs to the device. These
inputs accept AC- or DC-coupled signals as small as 100mV. External termination is
required.
8
VCC
Positive power supply. Bypass with 0.1
F
0.01
F low ESR capacitors.
7, 6
Q, /Q
Differential LVDS Output: This output is the output of the device. Terminate with 100
across the pair. See "Output Interface Applications" section.
5
GND,
Ground. Ground pin and exposed pad must be connected to the same ground plane.
Exposed
1, 4
NC
No connect.
PIN DESCRIPTION
1
NC
IN
/IN
NC
8
VCC
Q
/Q
GND
7
6
5
2
3
4
8-Pin MLFTM (MLF-8)
3
Precision EdgeTM
SY89325V
Micrel
M9999-060304
hbwhelp@micrel.com or (408) 955-1690
Absolute Maximum Ratings
(1)
Supply Voltage (V
CC
) ................................ 0.5V to + 6.0V
Input Voltage (V
IN
) .............................. 0.5V to V
CC
+0.5V
Input Current
Source or sink current on IN, /IN ..........................
50mA
CML Output Voltage (V
OUT
) ........... V
CC
1.0V to V
CC
+0.5V
Lead Temperature (soldering, 10 sec.) ................... +265
C
Storage Temperature (T
S
) ...................... 65
C to +150
C
Operating Ratings
(2)
Supply Voltage (V
CC
) .................................. +3.0V to +3.6V
............................................................ +4.5V to +5.0V
Ambient Temperature (T
A
) ........................ 40
C to +85
C
Package Thermal Resistance
(3)
MLFTM (
JA
)
Still-Air ................................................................. 93
C/W
MLFTM (
JB
)
Junction-to-board ............................................... 60
C/W
T
A
= 40
C to +85
C; unless stated.
Symbol
Parameter
Condition
Min
Typ
Max
Units
V
CC
Power Supply
3.0
3.3
3.6
V
4.5
5.0
5.7
V
I
CC
Power Supply Current
V
CC
3.6V
50
mA
3.6V
V
CC
5.7V
80
mA
DC ELECTRICAL CHARACTERISTICS
(4)
V
CC
= 3.3V
10% or 5.0V
10%; T
A
= 40
C to +85
C; R
L
= 100
across output pair, or equivalent, unless otherwise stated.
Symbol
Parameter
Condition
Min
Typ
Max
Units
V
OH
Output HIGH Voltage
I
OH
= 4.0mA
1.474
V
V
OL
Output LOW Voltage
I
OL
= 4.0mA
0.925
V
V
OCM
Output Common Mode Voltage
1.125
1.375
V
V
OCM
Change in Common Mode Voltage
50
+50
mV
V
OUT
Output Voltage Swing
250
350
mV
V
DIFF-OUT
Differential Output Voltage Swing
500
700
mV
Notes:
1. Permanent device damage may occur if ratings in the "Absolute Maximum Ratings" section are exceeded. This is a stress rating only and functional
operation is not implied for 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. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the device's most negative potential on the PCB.
JB
uses 4-layer
JA
in still-air unless otherwise stated.
4. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.
LVDS OUTPUT DC ELECTRICAL CHARACTERISTICS
(4)
V
CC
= 3.3V
10% or 5.0V
10%; T
A
= 40
C to +85
C.
Symbol
Parameter
Condition
Min
Typ
Max
Units
V
IH
Input HIGH Voltage
1.6
V
CC
V
(IN, /IN)
V
IL
Input LOW Voltage
1.5
V
CC
0.1
V
(IN, /IN)
V
IN
Input Voltage Swing
See Figure 1a.
100
mV
(IN, /IN)
V
DIFF_IN
Differential Input Voltage Swing
See Figure 1b.
200
mV
|IN - /IN|
INPUT DC ELECTRICAL CHARACTERISTICS
(4)
4
Precision EdgeTM
SY89325V
Micrel
M9999-060304
hbwhelp@micrel.com or (408) 955-1690
V
CC
= 3.3V
10% or 5.0V
10%; T
A
= 40
C to +85
C; output loaded with 100
across the output pair, or equivalent unless otherwise stated.
Symbol
Parameter
Condition
Min
Typ
Max
Units
f
MAX
Maximum Operating Frequency
V
OUT
200mV
NRZ Data
1.5
Gbps
Clock
750
MHz
t
pd
Propagation Delay
IN-to-Q
V
IN
100mV
300
700
ps
t
JITTER
Random Jitter (RJ)
Note 6
1
ps
rms
Deterministic Jitter (DJ)
Note 7
10
ps
pp
Cycle-to-Cycle Jitter
Note 8
1
ps
rms
Total Jitter (TJ)
Note 9
10
ps
pp
t
r
, t
f
Rise / Fall Time (20% to 80%)
At full output swing.
100
300
ps
Q, /Q
Notes:
5. Measured with 100mV input swing. See "Timing Diagrams" section for definition of parameters. High-frequency AC-parameters are guaranteed by
design and characterization.
6. RJ is measured with a K28.7 comma detect character pattern, measured at 1.5Gbps.
7. DJ is measured at f
MAX
, with both K28.5 and 2
23
1 PRBS pattern
8. 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.
9. 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.
AC ELECTRICAL CHARACTERISTICS
(5)
SINGLE-ENDED AND DIFFERENTIAL SWINGS
V
IN
,
V
OUT
350mV (Typ.)
Figure 1a. Single-Ended Voltage Swing
V
DIFF_IN
,
V
DIFF_OUT
700mV (Typ.)
Figure 1b. Differential Voltage Swing
TIMING DIAGRAM
IN
/IN
Q
/Q
t
pd
Figure 2. Timing Diagram
5
Precision EdgeTM
SY89325V
Micrel
M9999-060304
hbwhelp@micrel.com or (408) 955-1690
INPUT INTERFACE APPLICATIONS
CML
IN
/IN
V
CC (DRIVER)
V
CC
100
SY89325V
Note:
V
CC
of SY89325V must be
V
CC (DRIVER)
Figure 3. CML-DC Coupled
PECL
IN
/IN
50
50
V
CC (DRIVER)
V
CC
SY89325V
V
CC
2V
Note:
V
CC
of SY89325V must be
V
CC (DRIVER)
Figure 4. PECL-DC Coupled
CML
IN
/IN
3.92k
3.92k
100
V
CC (DRIVER)
V
CC
SY89325V
Figure 5. CML-AC Coupled Short Lines
CML
IN
/IN
130
130
V
CC (DRIVER)
V
CC
SY89325V
82
82
V
CC
Figure 6. CML-AC Coupled Long Lines
LVDS
IN
/IN
V
CC
100
SY89325V
Figure 7. LVDS
6
Precision EdgeTM
SY89325V
Micrel
M9999-060304
hbwhelp@micrel.com or (408) 955-1690
OUTPUT INTERFACE APPLICATIONS
LVDS specifies a small swing of 350mV typical, on a
nominal 1.25V common mode above ground. The common
mode voltage has tight limits to permit large variations in
ground between an LVDS driver and receiver. Also, change
in common mode voltage, as a function of data input, is
kept to a minimum, to keep EMI low.
100
V
OUT
GND
V
OH
, V
OL
V
OH
, V
OL
Figure 8a. LVDS Differential Measurement
GND
V
OCM
,
V
OCM
50
50
Figure 8b. LVDS Common Mode Measurement
Part Number
Function
Data Sheet Link
SY55855V
Dual CML/PECL/LVPECL-to-LVDS Translator
www.micrel.com/product-info/products/sy55855v.shtml
MLFTM Application Note
www.amkor.com/products/notes_papers/MLF_AppNote_0902.pdf
HBW Solutions
New Products and Applications
www.micrel.com/product-info/products/solutions.shtml
RELATED PRODUCT AND SUPPORT DOCUMENTATION
7
Precision EdgeTM
SY89325V
Micrel
M9999-060304
hbwhelp@micrel.com or (408) 955-1690
MICREL, INC.
1849 FORTUNE DRIVE
SAN JOSE, CA 95131
USA
TEL
+ 1 (408) 944-0800
FAX
+ 1 (408) 474-1000
WEB
http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use.
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can
reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into
the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser's
use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser's own risk and Purchaser agrees to fully indemnify
Micrel for any damages resulting from such use or sale.
2004 Micrel, Incorporated.
8 LEAD
MicroLeadFrame (MLF-8)
Package
EP- Exposed Pad
Die
CompSide Island
Heat Dissipation
Heavy Copper Plane
Heavy Copper Plane
V
EE
V
EE
Heat Dissipation
PCB Thermal Consideration for 8-Pin MLFTM Package
Package Notes:
1. Package meets Level 2 qualification.
2. All parts are dry-packaged before shipment.
3. Exposed pads must be soldered to a ground for proper thermal management.
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