SY100EPT21L
3.3V Differential ECL
LVPECL-to-LVTTL Translator
ECL Pro™
General Description
The SY100EPT21L is a single, differential LVPECL-to-
LVTTL translator using a single +3.3V power supply.
Because the device uses low-voltage positive ECL
(LVPECL) levels, only +3.3V and ground are required. The
small-outline 8-pin SOIC package and low-skew, single-
gate design make the EPT21L ideal for applications that
require the translation of a clock or data signal where
minimal space, low power, and low cost are critical.
V
BB
allows a differential, single-ended, or AC-coupled
interface to the device. If used, the V
BB
output should be
bypassed to V
CC
with 0.01µF capacitor.
Under open input conditions, the /D is biased at a V
CC
/2
voltage level and the D input is pulled to ground. This
condition forces the Q output low to provide added
stability.
The 100EPT is compatible with positive ECL 100K logic
levels. For applications that require the smallest footprint,
consider the SY89321L in ultra-small 8-pin MSOP and
SOIC packages.
Data sheets and support documentation can be found on
Micrel’s web site at:
www.micrel.com.
ECL Pro™
Features
•
Guaranteed over the industrial temperature range:
–40°C to +85°C
•
Pin-for-pin, plug-in replacement to MC100EPT21D/DT
•
3.3V power supply
•
1.9ns typical propagation delay
•
275MHz f
MAX
(clock)
•
Differential LVPECL inputs
•
24mA LVTTL output
•
Flow-through pin configuration
•
Q output defaults LOW with inputs open
•
V
BB
output
•
Available in 8-pin MSOP and SOIC packages
Applications
•
ASIC/FPGA interface
•
Legacy interface
•
Precision differential-to-general purpose, single-ended
translation
Cross Reference
Micrel
SY100EPT21LZI
SY100EPT21LZITR
SY100EPT21LKI
SY100EPT21LKITR
ON Semiconductor
MC100EPT21D
MC100EPT21DR2
MC100EPT21DT
MC100EPT21DTR2
ECL Pro is a trademark of Micrel, Inc
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
408
) 944-0800 • fax + 1 (408) 474-1000 •
http://www.micrel.com
November 2012
M9999-112712-F
hbwhelp@micrel.com
or (408) 955-1690
Micrel, Inc.
SY100EPT21L
Ordering Information
(1)
Part Number
SY100EPT21LZG
(2)
SY100EPT21LZGTR
(2, 3)
SY100EPT21LKG
(2)
SY100EPT21LKGTR
(2, 3)
Notes:
1.
2.
3.
Contact factory for die availability. Dice are guaranteed at T
A
= 25°C, DC Electricals only.
Pb-Free packages are recommended for new designs.
Tape and Reel.
Package
8-Pin SOIC (Z8-1)
8-Pin SOIC (Z8-1)
8-Pin MSOP (K8-1)
8-Pin MSOP (K8-1)
Operating Range
Industrial
Industrial
Industrial
Industrial
Marking
XEP21L with Pb-Free bar-line indicator
XEP21L with Pb-Free bar-line indicator
XP21 with Pb-Free bar-line indicator
XP21 with Pb-Free bar-line indicator
Pin Configuration
8-Pin SOIC (Z8-1)
8-Pin MSOP (K8-1)
Pin Description
Pin Number
1
2, 3
4
5
6
7
8
Pin Name
NC
D, /D
VBB
GND
NC
Q
VCC
Pin Function
No Connect
Differential LVPECL Input Pair
Output Reference Voltage
Ground
No Connect
LVTTL Output
Positive Supply
Truth Table
D
L
H
Open
/D
H
L
Open
Q
L
H
L
November 20012
2
M9999-112712-F
hbwhelp@micrel.com
or (408) 955-1690
Micrel, Inc.
SY100EPT21L
Absolute Maximum Ratings
(1)
Power Supply Voltage (V
CC
)......................... –0.5V to +3.8V
PECL Input Voltage (V
IN
) .......................... 0V to V
CC
+ 0.5V
Voltage Applied to Output at HIGH State (V
OUT
) –0.5 to V
CC
Current Applied to Output at LOW State (I
OUT
)
............................................... Twice the Rated I
OL
(mA)
Lead Temperature (soldering, 20sec.) ..................... +260°C
Storage Temperature (T
s
) ......................... –65°C to +150°C
Operating Ratings
(2)
Power Supply Voltage (V
CC
) ........................ –0.5V to +3.8V
Ambient Temperature (T
A
) .......................... –40°C to +85°C
Package Thermal Resistance
SOIC (θ
JA
) ........................................................ 113°C/W
MSOP (θ
JA
) ...................................................... 124°C/W
LVTTL Output DC Electrical Characteristics
V
CC
= +3.3V, GND = 0V; T
A
= –40°C to +85°C; unless noted.
Symbol
I
OS
I
CC
V
OH
V
OL
Parameter
Output Short Circuit Current
Power Supply Current
Output High Voltage
Output Low Voltage
I
OH
= –3.0mA
(3)
I
OL
= 24mA
2.3
0.5
Condition
V
OUT
= 0V
Min.
–80
14
Typ.
Max.
–275
20
Units
mA
mA
V
V
LVTTL Input DC Electrical Characteristics
V
CC
= +3.3V, GND = 0V; T
A
= –40°C to +85°C; unless noted.
Symbol
I
IH
I
IL
V
IH
V
IL
V
BB
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.
The data sheet limits are not guaranteed if the device is operated beyond the operating ratings.
These values are for V
CC
= 3.3V. Level Specifications will vary 1:1 V
CC
.
Parameter
Input HIGH Current
Input LOW Current
Input HIGH Voltage
Input LOW Voltage
Reference Output
D
/D
Condition
Min.
0.5
–300
Typ.
Max.
150
Units
µA
µA
µA
Note 3
Note 3
Note 3
2135
1490
1920
1980
2420
1825
2040
mV
mV
mV
2.
3.
November 20012
3
M9999-112712-F
hbwhelp@micrel.com
or (408) 955-1690
Micrel, Inc.
SY100EPT21L
AC Electrical Characteristics
V
CC
= +3.0V to +3.6V, GND = 0V; T
A
= –40°C to +85°C; unless noted.
Symbol
t
PD
t
skpp
f
MAX
V
CMR
V
PP
t
r
, t
f
Notes:
1.
2.
3.
4.
Part-to-part skew considering HIGH-to-HIGH transitions at common V
CC
level.
These parameters are guaranteed but not tested.
The f
MAX
value is specified as the minimum guaranteed maximum frequency. Actual operational maximum frequency may be greater.
100mV input guarantees full logic at output.
Parameter
Propagation Delay
Part-to-Part Skew
Maximum Input Frequency
Common Mode Range
Minimum Peak-to-Peak Input
Output Rise/Fall Time
(1.0V to 2.0V)
Condition
C
L
= 20pF
C
L
= 20pF
(1, 2)
Min.
1.5
275
1.2
Typ.
1.9
Max.
2.5
0.5
V
CC
1.0
Units
ns
ns
MHz
V
mV
ns
Note 4
C
L
= 20pF
100
0.5
November 20012
4
M9999-112712-F
hbwhelp@micrel.com
or (408) 955-1690
Micrel, Inc.
SY100EPT21L
Package Information
(1)
8-Pin Plastic SOIC (Z8-1)
Note:
1.
Package information is correct as of the publication date. For updates and most current information, go to
www.micrel.com.
November 20012
5
M9999-112712-F
hbwhelp@micrel.com
or (408) 955-1690
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