The SY10/100ELT22 are dual TTL-to-differential PECL
translators. Because PECL (Positive ECL) levels are
used, only +5V and ground are required. The small outline
8-lead SOIC package and the low skew, dual gate design
of the ELT22 makes it ideal for applications which require
the tranlation of a clock and a data signal.
The ELT22 is available in both ECL standards: the
10ELT is compatible with positive ECL 10H logic levels,
while the 100ELT is compatible with positive ECL 100K
logic levels.
PIN NAMES
Pin
Q
n
D
n
V
CC
GND
Function
Differential PECL Outputs
TTL Inputs
+5.0V Supply
Ground
M9999-052108
hbwhelp@micrel.com or (408) 955-1690
Rev.: H
Amendment: /0
1
Issue Date: May 2008
Micrel
SY10ELT22
SY100ELT22
PACKAGE/ORDERING INFORMATION
Ordering Information
(1)
Q0 1
/Q0 2
PECL
TTL
8 VCC
7 D0
6 D1
5 GND
Part Number
SY10ELT22ZC
SY10ELT22ZCTR
(2)
SY100ELT22ZC
SY100ELT22ZCTR
(2)
SY100ELT22ZI
SY100ELT22ZITR
(2)
SY10ELT22ZG
(3)
SY10ELT22ZGTR
(2, 3)
SY100ELT22ZG
(3)
SY100ELT22ZGTR
(2, 3)
Package
Type
Z8-1
Z8-1
Z8-1
Z8-1
Z8-1
Z8-1
Z8-1
Z8-1
Z8-1
Z8-1
Operating
Range
Commercial
Commercial
Commercial
Commercial
Industrial
Industrial
Industrial
Industrial
Industrial
Industrial
Package
Marking
HEL22
HEL22
XEL22
XEL22
XEL22
XEL22
HEL22 with
Pb-Free bar-line indicator
HEL22 with
Pb-Free bar-line indicator
XEL22 with
Pb-Free bar-line indicator
XEL22 with
Pb-Free bar-line indicator
Lead
Finish
Sn-Pb
Sn-Pb
Sn-Pb
Sn-Pb
Sn-Pb
Sn-Pb
Pb-Free
NiPdAu
Pb-Free
NiPdAu
Pb-Free
NiPdAu
Pb-Free
NiPdAu
Q1 3
/Q1 4
8-Pin SOIC (Z8-1)
Notes:
1. Contact factory for die availability. Dice are guaranteed at T
A
= 25°C, DC Electricals only.
2. Tape and Reel.
3. Pb-Free package is recommended for new designs.
M9999-052108
hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
SY10ELT22
SY100ELT22
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
V
CC
V
I
I
I
I
OUT
Paramter
Power Supply Voltage
TTL Input Voltage
TTL Input Current
PECL Output Current
— Continuous
— Surge
T
LEAD
T
store
T
A
Lead Temperature
(soldering, 20sec.)
Storage Temperature
Operating Temperature
50
100
+260
–65 to +150
–40 to +85
°C
°C
°C
Value
–0.5 to +7.0
–0.5 to V
CC
–30 to +5.0
Unit
V
V
mA
mA
TRUTH TABLE
D
H
L
Open
Q
H
L
H
Q
L
H
L
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.
DC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= V
CC
(Min.) to V
CC
(Max.)
T
A
= -40
°
C
Symbol
I
CC
Parameter
Power Supply Current
—
30
T
A
= 0
°
C
—
30
T
A
= +25
°
C T
A
= +85
°
C
Condition
—
—
30
—
30
mA
Min. Max. Min. Max. Min. Max. Min. Max. Unit
NOTE:
1. Parametric values specified at:
5 volt Power Supply Range
100ELT22 Series:
10ELT22 Series
+4.2V to +5.5V.
+4.75V to +5.5V.
TTL DC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= V
CC
(Min.) to V
CC
(Max.)
T
A
= -40
°
C
Symbol
V
IH
V
IL
I
IH
I
IL
V
IK
Parameter
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
Input Clamp Voltage
Min.
2.0
—
—
—
—
—
Max.
—
0.8
20
100
–0.2
–1.2
T
A
= 0
°
C
Min.
2.0
—
—
—
—
—
Max.
—
0.8
20
100
–0.2
–1.2
T
A
= +25
°
C
Min.
2.0
—
—
—
—
—
Max.
—
0.8
20
100
–0.2
–1.2
T
A
= +85
°
C
Min.
2.0
—
—
—
—
—
Max.
—
0.8
20
100
–0.2
–1.2
Unit
V
V
µA
mA
V
Condition
—
—
V
IN
= 2.7V
V
IN
= V
CC
V
IN
= 0.5V
I
IN
= –18mA
NOTE:
1. Parametric values specified at:
5 volt Power Supply Range
100ELT22 Series:
10ELT22 Series
+4.2V to +5.5V.
+4.75V to +5.5V.
M9999-052108
hbwhelp@micrel.com or (408) 955-1690
3
Micrel
SY10ELT22
SY100ELT22
PECL DC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= V
CC
(Min.) to V
CC
(Max.)
T
A
= -40
°
C
Symbol
V
OH
Parameter
Min.
Typ.
—
—
—
—
Max.
4110
4120
3350
3445
Min.
3980
3975
3050
3190
Output HIGH Voltage
(2)
10ELT 3920
100ELT 3915
Output LOW Voltage
(2)
10ELT 3050
100ELT 3170
T
A
= 0
°
C
Typ.
—
—
—
—
Max.
4160
4120
3370
3380
T
A
= +25
°
C
Min.
4020
3975
3050
3190
Typ.
—
—
—
—
Max.
4190
4120
3370
3380
T
A
= +85
°
C
Min.
4090
3975
3050
3190
Typ.
—
—
—
—
Max.
4280
4120
mV
3405
3380
Unit
mV
V
OL
NOTES:
1. Parametric values specified at:
100ELT22 Series:
10ELT22 Series
2. These values are for V
CC
= 5.0V. Level Specifications will vary 1:1 with V
CC
.
5 volt Power Supply Range
+4.2V to +5.5V.
+4.75V to +5.5V.
AC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= V
CC
(Min.) to V
CC
(Max.)
T
A
= -40
°
C
Symbol
t
PD
t
r
t
f
t
skpp
t
skew
Parameter
Propagation Delay to Output D,
ENECL/ENTTL
Output Rise/Fall Time
20% to 80%
Part-to-Part Skew
(2)
Within-Device Skew
(2,3)
100
200
—
—
600
500
500
100
T
A
= 0
°
C
100
200
—
—
600
500
500
100
T
A
= +25
°
C
100
200
—
—
600
500
500
100
T
A
= +85
°
C
Condition
50Ω to V
CC
– 2.0V
50Ω to V
CC
– 2.0V
50Ω to V
CC
– 2.0V
50Ω to V
CC
– 2.0V
100
200
—
—
600
500
500
100
ps
ps
ps
ps
Min. Max. Min. Max. Min. Max. Min. Max. Unit
NOTE:
1. Parametric values specified at:
5 volt Power Supply Range
100ELT22 Series:
10ELT22 Series
+4.2V to +5.5V.
+4.75V to +5.5V.
2. Guaranteed, but not tested.
3. Same transition @common V
CC
levels.
M9999-052108
hbwhelp@micrel.com or (408) 955-1690
4
Micrel, Inc.
SY10ELT22
SY100ELT22
8-PIN SOIC .150" WIDE (Z8-1)
Rev. 03
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131
TEL
USA
+ 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.
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