1
Precision Edge
SY89222L
Micrel, Inc.
M9999-051805
hbwhelp@micrel.com or (408) 955-1690
DESCRIPTION
s
3.3V power supply
s
300ps typical propagation delay
s
<100ps output-to-output skew
s
Differential LVPECL outputs
s
PNP TTL inputs for minimal loading
s
Flow-through pinouts
s
Available in ultra-small 8-pin MLFTM
(2mm
2mm)
package
FEATURES
Precision Edge
SY89222L
Rev.: B
Amendment: /0
Issue Date:
May 2005
The SY89222L is a dual TTL-to-differential LVPECL
translator with a +3.3V power supply. Because LVPECL
(Positive ECL) levels are used, only +3.3V and ground are
required. The SY89222L is functionally equivalent to the
SY100ELT22L but in an ultra-small 8-lead MLFTM package
that features a 70% smaller footprint. The low skew, dual
gate design of the SY89222L makes it ideal for applications
that require the translation of a clock and a data signal.
Precision Edge
Precision Edge is a registered trademark of Micrel, Inc.
MLF and
MicroLeadFrame are trademarks of Amkor Technology, Inc.
3.3V DUAL
TTL-to-DIFFERENTIAL
PECL TRANSLATOR
Micrel Part Number
Functional Cross
2
2 MLFTM
PECL
8-SOIC
SY89222L
100K
SY100ELT22
FUNCTIONAL CROSS REFERENCE
TABLE
2
Precision Edge
SY89222L
Micrel, Inc.
M9999-051805
hbwhelp@micrel.com or (408) 955-1690
PACKAGE/ORDERING INFORMATION
PIN DESCRIPTION
Pin Number
Pin Name
Type
Pin Function
7, 6
D0, D1
TTL Input
Single-ended TTL inputs. If left open, defaults to HIGH.
1, 2, 3, 4
Q0, /Q0,
100k LVPECL
Differential LVPECL Outputs: See
"Output Interface Applications" section
Q1, /Q1
Output
for recommendations on terminations. Q defaults to HIGH (/Q defaults to
LOW) when D input is left open.
8
VCC
Power
Positive Power Supply: Bypass with 0.1
F//0.01
F low ESR capacitors.
5
GND,
Ground
GND and Exposed pad must be tied to ground plane.
Exposed Pad
Q0
TTL
/Q0
Q1
/Q1
VCC
D0
LVPECL
D1
GND
1
2
3
4
8
7
6
5
TOP VIEW
8-Pin MLFTM
Ultra-Small Outline (2mm
2mm)
Ordering Information
(1)
Package
Operating
Package
Lead
Part Number
Type
Range
Marking
Finish
SY89222LMITR
(2)
MLF-8
Industrial
222
Sn-Pb
SY89222LMGTR
(2)
MLF-8
Industrial
222 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
Precision Edge
SY89222L
Micrel, Inc.
M9999-051805
hbwhelp@micrel.com or (408) 955-1690
Absolute Maximum Ratings
(Note 1)
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
Input Current
Source or sink current on D0, D1 .........................
50mA
Lead Temperature (soldering, 10 sec.) ................... +220
C
Storage Temperature (T
S
) ....................... 65
C to +150
C
Operating Ratings
(Note 2)
Supply Voltage (V
CC
) ...................................... 3.0V to 3.8V
Ambient Temperature (T
A
) ......................... 40
C to +85
C
Package Thermal Resistance, (Note 3)
MLFTM (
JA
)
Still-Air ................................................................. 93
C/W
500lfpm ............................................................... 87
C/W
MLFTM (
JB
)
Junction-to-Board ................................................ 56
C/W
Symbol
Parameter
Condition
Min
Typ
Max
Units
I
CC
Power Supply Current
Max V
CC
, no load
--
--
25
mA
DC ELECTRICAL CHARACTERISTICS
V
CC
= +3.0V to +3.8V; T
A
= 40
C to +85
C, unless otherwise stated.
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
V
IN
= 2.7V
--
--
20
A
V
IN
= V
CC
--
--
100
A
I
IL
Input LOW Current
V
IN
= 0.5V
--
--
0.2
mA
V
IK
Input Clamp Voltage
I
IN
= 18mA
--
--
1.2
V
TTL DC ELECTRICAL CHARACTERISTICS
(Note 4)
V
CC
= +3.0V to +3.8V and V
EE
= 0V; T
A
= 40
C to +85
C unless otherwise noted.
Symbol
Parameter
Condition
Min
Typ
Max
Units
V
OH
Output HIGH Voltage
Note 1
V
CC
1.080
--
V
CC
0.880
V
V
OL
Output LOW Voltage
Note 1
V
CC
1.830
--
V
CC
1.620
V
Note 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
RATlNG conditions for extended periods may affect device reliability.
Note 2.
The data sheet limits are not guaranteed if the device is operated beyond the operating ratings.
Note 3.
Package thermal resistance assumes exposed pad is soldered (or equivalent) to the devices most negative potential on the PCB.
Note 4.
Parametric values specified at: 3 volt power supply range +3.0V to +3.8V.
Note 5.
Output loaded with 50
to V
CC
2V.
PECL DC ELECTRICAL CHARACTERISTICS
(Note 5)
4
Precision Edge
SY89222L
Micrel, Inc.
M9999-051805
hbwhelp@micrel.com or (408) 955-1690
V
CC
= +3.0V to +3.8V; T
A
= 40
C to +85
C, R
L
= 50
to V
CC
2V, unless otherwise stated.
Symbol
Parameter
Condition
Min
Typ
Max
Units
t
pd
Propagation Delay
100
--
600
ps
t
r
/ t
f
Output Rise/Fall Time
200
--
500
ps
20% to 80%
t
skew
Within-Device Skew
Notes 6, 7
--
--
100
ps
t
skpp
Part-to-Part Skew
Note 6
--
--
500
ps
T
jitter
Cycle-to-cycle
Note 8
1
ps
RMS
Note 6.
AC parameters are guaranteed by design and characterization.
Note 7.
Same transition, common V
CC
levels.
Note 8.
Cycle-to-cycle jitter definition: the variation in the period between adjacent cycles over a random sample of adjacent cycle pairs:
T
jitter
_
CC
= T
n
T
nt
, where T is the time between the rising edges of the output cycle.
AC ELECTRICAL CHARACTERISTICS
(Note 6)
LVPECL OUTPUT INTERFACE APPLICATIONS
1.6k
82
Z
O
= 50
+3.3V
+3.3V
V
CC
--1.3V
130
82
130
V
CC
--2V
1k
+3.3V
+3.3V
Figure 1c. Terminating Unused I/O
82
82
Z
O
= 50
Z
O
= 50
+3.3V
+3.3V
V
CC
--2V
130
130
+3.3V
Figure 1a. Parallel Thevenin-Equivalent
Termination
Z
O
= 50
Z
O
= 50
50
V
CC
--2V
50
50
+3.3V
+3.3V
C (optional)
0.01
F
Figure 1b. Three Resistor
"Y Termination"
5
Precision Edge
SY89222L
Micrel, Inc.
M9999-051805
hbwhelp@micrel.com or (408) 955-1690
MICREL, INC.
2180 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 datasheet 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.
2005 Micrel, Incorporated.
8 LEAD ULTRA-SMALL EPAD-
MicroLeadFrameTM (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:
Note 1.
Package meets Level 2 qualification.
Note 2.
All parts are dry-packaged before shipment.
Note 3.
Exposed pads must be soldered to a ground plane, of the same potential as the GND plane for proper
thermal management.
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