PECL (Positive ECL) levels are used, only +3.3V and
ground are required. The small outline 8-lead SOIC
package and the low skew, dual gate design of the
ELT22L makes it ideal for applications which require the
tranlation of a clock and a data signal.
The ELT22L 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.
s
Flow-through pinouts
s
Available in 8-pin SOIC package
PIN CONFIGURATION/BLOCK DIAGRAM
PIN NAMES
Pin
Function
Differential PECL Outputs
TTL Inputs
+3.3V Supply
Ground
Q
0
Q
0
Q
1
Q
1
1
2
PECL
3
4
TTL
8
7
6
5
V
CC
D
0
D
1
GND
Q
n
D
n
V
CC
GND
SOIC
TOP VIEW
Rev.: I
Amendment: /0
1
Issue Date: February 2003
Micrel
SY10ELT22L
SY100ELT22L
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
Storage Temperature
Operating Temperature
Value
–0.5 to +7.0
–0.5 to V
CC
–30 to +5.0
50
100
–65 to +150
–40 to +85
°C
°C
Unit
V
V
mA
mA
TRUTH TABLE
D
H
L
Open
Q
H
L
H
Q
L
H
L
T
store
T
amb
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
= +3.0V to +3.8V
T
A
= -40
°
C
Symbol
I
CC
Parameter
Power Supply Current
Min. Max.
—
25
T
A
= 0
°
C
—
25
T
A
= +25
°
C
—
25
T
A
= +85
°
C
Min. Max. Unit
—
25
mA
Condition
—
Min. Max. Min. Max.
NOTE:
1. Parametric values specified at:
3 volt Power Supply Range
10/100ELT22L Series: +3.0V to +3.8V.
AC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= +3.0V to +3.8V
T
A
= -40
°
C
Symbol
t
PLH
t
PHL
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 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
100
200
—
—
600
500
500
100
ps
ps
ps
ps
Min. Max. Min. Max. Min. Max. Min. Max. Unit
NOTES:
1. Parametric values specified at:
3 volt Power Supply Range
2. Guaranteed, but not tested.
3. Same transition @common V
CC
levels.
10/100ELT22L Series: +3.0V to +3.8V.
2
Micrel
SY10ELT22L
SY100ELT22L
TTL DC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= +3.0V to +3.8V
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:
3 volt Power Supply Range
10/100ELT22L Series: +3.0V to +3.8V.
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.
2410
2420
1650
1750
Min.
2280
2275
1350
1490
Output HIGH Voltage
(2)
10ELT 2220
100ELT 2220
Output LOW Voltage
(2)
10ELT 1350
100ELT 1470
T
A
= 0
°
C
Typ.
—
—
—
—
Max.
2460
2420
1670
1680
T
A
= +25
°
C
Min.
2320
2275
1350
1490
Typ.
—
—
—
—
Max.
2490
2420
1670
1680
T
A
= +85
°
C
Min.
2390
2275
1350
1490
Typ.
—
—
—
—
Max.
2580
2420
mV
1705
1680
Unit
mV
V
OL
NOTES:
1. Parametric values specified at:
3 volt Power Supply Range 10/100ELT22L Series: +3.0V to +3.8V.
2. These values are for V
CC
= 3.3V. Level Specifications will vary 1:1 with V
CC
.
PRODUCT ORDERING CODE
Ordering
Code
SY10ELT22LZC
SY10ELT22LZCTR*
SY100ELT22LZC
SY100ELT22LZCTR*
*Tape and Reel
Note 1.
Recommended for new designs.
Package
Type
Z8-1
Z8-1
Z8-1
Z8-1
Operating
Range
Commercial
Commercial
Commercial
Commercial
Marking
Code
HEL22L
HEL22L
XEL22L
XEL22L
Ordering
Code
SY10ELT22LZI
(1)
SY10ELT22LZITR*
(1)
SY100ELT22LZI
(1)
SY100ELT22LZITR*
(1)
Package
Type
Z8-1
Z8-1
Z8-1
Z8-1
Operating
Range
Industrial
Industrial
Industrial
Industrial
Marking
Code
HEL22L
HEL22L
XEL22L
XEL22L
3
Micrel
SY10ELT22L
SY100ELT22L
8 LEAD SOIC .150" WIDE (Z8-1)
Rev. 03
MICREL, INC.
TEL
1849 FORTUNE DRIVE SAN JOSE, CA 95131
FAX
USA
+ 1 (408) 944-0800
+ 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.
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