SY100EPT21L
3.3V Differential ECL
LVPECL-to-LVTTL Translator
ECL Pro™
General Description
The SY100EPT21L is a single, differential LVPECL-toLVTTL 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, singlegate 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.
VBB allows a differential, single-ended, or AC-coupled
interface to the device. If used, the VBB output should be
bypassed to VCC with 0.01µF capacitor.
Under open input conditions, the /D is biased at a VCC/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 fMAX (clock)
• Differential LVPECL inputs
• 24mA LVTTL output
• Flow-through pin configuration
• Q output defaults LOW with inputs open
• VBB 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
ON Semiconductor
SY100EPT21LZI
MC100EPT21D
SY100EPT21LZITR
MC100EPT21DR2
SY100EPT21LKI
MC100EPT21DT
SY100EPT21LKITR
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
Package
Operating Range
Marking
SY100EPT21LZG(2)
8-Pin SOIC (Z8-1)
Industrial
XEP21L with Pb-Free bar-line indicator
SY100EPT21LZGTR(2, 3)
8-Pin SOIC (Z8-1)
Industrial
XEP21L with Pb-Free bar-line indicator
SY100EPT21LKG(2)
8-Pin MSOP (K8-1)
Industrial
XP21 with Pb-Free bar-line indicator
SY100EPT21LKGTR(2, 3)
8-Pin MSOP (K8-1)
Industrial
XP21 with Pb-Free bar-line indicator
Notes:
1.
Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC Electricals only.
2.
Pb-Free packages are recommended for new designs.
3.
Tape and Reel.
Pin Configuration
8-Pin SOIC (Z8-1)
8-Pin MSOP (K8-1)
Pin Description
Pin Number
Pin Name
Pin Function
1
NC
2, 3
D, /D
Differential LVPECL Input Pair
4
VBB
Output Reference Voltage
5
GND
Ground
6
NC
No Connect
No Connect
7
Q
LVTTL Output
8
VCC
Positive Supply
Truth Table
D
/D
Q
L
H
L
H
L
H
Open
Open
L
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Micrel, Inc.
SY100EPT21L
Absolute Maximum Ratings(1)
Operating Ratings(2)
Power Supply Voltage (VCC)......................... –0.5V to +3.8V
PECL Input Voltage (VIN) .......................... 0V to VCC + 0.5V
Voltage Applied to Output at HIGH State (VOUT) –0.5 to VCC
Current Applied to Output at LOW State (IOUT)
............................................... Twice the Rated IOL (mA)
Lead Temperature (soldering, 20sec.) ..................... +260°C
Storage Temperature (Ts) ......................... –65°C to +150°C
Power Supply Voltage (VCC) ........................ –0.5V to +3.8V
Ambient Temperature (TA) .......................... –40°C to +85°C
Package Thermal Resistance
SOIC (θJA) ........................................................ 113°C/W
MSOP (θJA) ...................................................... 124°C/W
LVTTL Output DC Electrical Characteristics
VCC = +3.3V, GND = 0V; TA = –40°C to +85°C; unless noted.
Symbol
Parameter
Condition
Min.
IOS
Output Short Circuit Current
VOUT = 0V
–80
ICC
Power Supply Current
VOH
Output High Voltage
IOH = –3.0mA(3)
2.3
VOL
Output Low Voltage
IOL = 24mA
Typ.
14
Max.
Units
–275
mA
20
mA
V
0.5
V
Max.
Units
150
µA
LVTTL Input DC Electrical Characteristics
VCC = +3.3V, GND = 0V; TA = –40°C to +85°C; unless noted.
Symbol
Parameter
Condition
Min.
IIH
Input HIGH Current
IIL
Input LOW Current
VIH
Input HIGH Voltage
Note 3
2135
2420
mV
VIL
Input LOW Voltage
Note 3
1490
1825
mV
VBB
Reference Output
Note 3
1920
2040
mV
D
Typ.
0.5
/D
µA
–300
µA
1980
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.
These values are for VCC = 3.3V. Level Specifications will vary 1:1 VCC.
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Micrel, Inc.
SY100EPT21L
AC Electrical Characteristics
VCC = +3.0V to +3.6V, GND = 0V; TA = –40°C to +85°C; unless noted.
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
tPD
Propagation Delay
CL = 20pF
1.5
1.9
2.5
ns
CL =
20pF(1, 2)
tskpp
Part-to-Part Skew
fMAX
Maximum Input Frequency
275
VCMR
Common Mode Range
1.2
VPP
Minimum Peak-to-Peak Input
Note 4
100
tr , tf
Output Rise/Fall Time
(1.0V to 2.0V)
CL = 20pF
0.5
0.5
ns
MHz
VCC
V
mV
1.0
ns
Notes:
1.
Part-to-part skew considering HIGH-to-HIGH transitions at common VCC level.
2.
These parameters are guaranteed but not tested.
3.
The fMAX value is specified as the minimum guaranteed maximum frequency. Actual operational maximum frequency may be greater.
4.
100mV input guarantees full logic at output.
November 20012
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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.
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Micrel, Inc.
SY100EPT21L
Package Information (Continued)
8-Pin MSOP (K8-1)
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
Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This
information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry,
specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability
whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties
relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right.
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© 2005 Micrel, Incorporated.
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