1
Precision EdgeTM
SY89323L
Micrel
DESCRIPTION
s
3.3V power supply
s
1.9ns typical propagation delay
s
Maximum frequency > 275MHz
s
Differential LVPECL inputs
s
24mA LVTTL outputs
s
Flow-through pinouts
s
Internal input resistors: pull-down on IN, pull-down
and pull-up on /IN
s
Q output will default LOW with inputs open
s
Available in ultra-small 8-pin MLFTM
(2mm
2mm)
package
FEATURES
Precision EdgeTM
SY89323L
Rev.: A
Amendment: /1
Issue Date:
December 2003
The SY89323L is a dual differential LVPECL-to-LVTTL
translator. Because LVPECL (Low Voltage Positive ECL)
levels are used, only +3.3V and ground are required. The
SY89323L is functionally equivalent to the SY100EPT23L,
but in an ultra-small 8-lead MLFTM package that features a
70% smaller footprint. The ultra-small package and the dual
gate design of the SY89823L make it ideal for applications
that require the translation of a clock and data signal in a
minimal space. The inputs are compatible with 10k and
100k input levels and any standard differential LVPECL
input referenced to a V
CC
of 3.3V.
Precision EdgeTM
Precision Edge is a trademark of Micrel, Inc.
Micro
LeadFrame and MLF are trademarks of Amkor Technology, Inc.
3.3V DUAL DIFFERENTIAL
LVPECL-TO-LVTTL TRANSLATOR
BLOCK DIAGRAM
LVPECL
INO
/INO
Q0
INI
/INI
Q1
LVTTL
2
Precision EdgeTM
SY89323L
Micrel
PIN DESCRIPTION
Pin Number
Pin Name
Type
Pin Function
1, 4
IN0, IN1
100k ECL Input
Differential PECL/ECL Input: Internal 75k
pull-down resistor. If left open,
pin defaults LOW. Q output will be LOW. See
"Input Interface Applications"
section for single-ended inputs.
2, 3
/IN0, /IN1
100k ECL Input
Differential PECL/ECL Input: Internal 75k
pull-up and pull-down resistors.
If left floating, pin defaults to V
CC
/2. When not used, this input can be left
open. See
"Input Interface Applications"
section for single-ended inputs.
7, 6
Q0, Q1
LVTTL Output
Single-ended LVTTL Outputs: Default to LOW if IN inputs left open.
8
VCC
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
PACKAGE/ORDERING INFORMATION
Ordering Information
Package
Operating
Package
Part Number
Type
Range
Marking
SY89323LMITR
(Note 1)
MLF-8
Industrial
323L
Note 1.
Tape and Reel.
IN0
/IN0
/IN1
LVTTL
INI
VCC
Q0
Q1
LVPECL
GND
1
2
3
4
8
7
6
5
8-Pin MLFTM
Ultra-Small Outline (2mm x 2mm)
3
Precision EdgeTM
SY89323L
Micrel
Absolute Maximum Ratings
(Note 1)
Supply Voltage (V
CC
) .................................. 0.5V to +3.8V
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 IN, /IN ..........................
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 3.6V
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 ................................................ 60
C/W
T
A
= 40
o
C to +85
C, unless otherwise noted.
Symbol
Parameter
Condition
Min
Typ
Max
Units
V
OH
Output HIGH Voltage
I
OH
= 3.0mA
2.0
--
--
V
V
OL
Output LOW Voltage
I
OL
= 24mA
--
--
0.5
V
I
CC
Power Supply Current
--
--
30
mA
I
OS
Output Short Circuit Current
V
OUT
= 0V
80
--
240
mA
LVTTL DC ELECTRICAL CHARACTERISTICS
V
CC
= +3.3V
10%; T
A
= 40
o
C to +85
C, unless otherwise noted.
Symbol
Parameter
Condition
Min
Typ
Max
Units
V
IH
Input HIGH Voltage
V
CC
1.230
V
CC
0.735
V
V
IL
Input LOW Voltage
V
CC
1.950
V
CC
1.475
V
V
IHCMR
Input HIGH Common Mode Range
Note 4
V
EE
+1.5
V
CC
V
V
PP
Minimum Peak-to-Peak Input
200
mV
I
IH
Input HIGH Current
150
A
I
IL
Input LOW Current
IN
0.5
A
/IN
300
A
Note 4.
V
IHCMR
(min) varies 1:1 with V
EE
, max varies 1:1 with V
CC
.
LVPECL DC ELECTRICAL CHARACTERISTICS
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.
4
Precision EdgeTM
SY89323L
Micrel
V
CC
= +3.3V
10%; C
L
= 20pF, T
A
= 40
o
C to +85
C, unless otherwise noted. All parameters guaranteed by design and characteriza-
tion.
Symbol
Parameter
Condition
Min
Typ
Max
Units
f
MAX
Maximum Input Frequency
Notes 1, 2
275
--
--
MHz
t
pd
Propagation Delay
1.5
--
2.5
ns
t
skpp
Part-to-Part Skew
Notes 3
--
--
0.5
ns
t
skew++
Within-Device Skew
Notes 4
--
--
0.3
ns
t
skew
Within-Device Skew
Notes 5
--
--
0.3
ns
t
jitter
Cycle-to-Cycle
Note 6
2
ps
rms
Total Jitter
Note 7
25
ps
pk-pk
t
r
Output Rise/Fall Time
0.5
--
1.0
ns
t
f
1.0V to 2.0V
Note 1.
Frequency at which guaranteed for functionality. V
OH
and V
OL
levels are guaranteed at DC only.
Note 2.
The f
MAX
value is specified as the minimum guaranteed maximum frequency. Actual operational maximum frequency may be greater.
Note 3.
Device-to-Device Skew considering HIGH-to-HIGH transitions at common V
CC
level.
Note 4.
Within-Device Skew considering HIGH-to -HIGH transitions at common V
CC
level.
Note 5.
Within-Device Skew considering LOW-to-LOW transitions at common V
CC
level.
Note 6.
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.
Note 7.
Total jitter definition: with an ideal clock input of frequency
f
MAX
, no more than one output edge in 10
12
output edge will deviate by more than
the specified peak-to-peak jitter value.
AC ELECTRICAL CHARACTERISTICS
INPUT INTERFACE APPLICATIONS
IN
+3.3V
V
CC
--1.3V
+3.3V
1k
1.6k
Single-Ended Input
(Terminating unused input)
5
Precision EdgeTM
SY89323L
Micrel
MICREL, INC.
1849 FORTUNE DRIVE
SAN JOSE, CA 95131
USA
TEL
+ 1 (408) 944-0800
FAX
+ 1 (408) 944-0970
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.
2003 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 for proper thermal management.
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