ETC SY10/100ELT22L

3.3V DUAL
TTL-to-DIFFERENTIAL
PECL TRANSLATOR
FEATURES
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SY10ELT22L
SY100ELT22L
FINAL
DESCRIPTION
3.3V power supply
300ps typical propagation delay
<100ps output-to-output skew
Differential PECL outputs
PNP TTL inputs for minimal loading
Flow-through pinouts
Available in 8-pin SOIC package
The SY10/100ELT22L are dual TTL-to-differential
PECL translators with +3.3V power supply. Because
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.
PIN NAMES
PIN CONFIGURATION/BLOCK DIAGRAM
Pin
Q0
Q0
8
1
7
2
PECL
VCC
D0
TTL
Q1
3
6
D1
Q1
4
5
GND
Function
Qn
Differential PECL Outputs
Dn
TTL Inputs
VCC
+3.3V Supply
GND
Ground
SOIC
TOP VIEW
Rev.: I
1
Amendment: /0
Issue Date: February 2003
SY10ELT22L
SY100ELT22L
Micrel
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
Paramter
TRUTH TABLE
Value
Unit
D
Q
Q
VCC
Power Supply Voltage
–0.5 to +7.0
V
H
H
L
VI
TTL Input Voltage
–0.5 to VCC
V
L
L
H
II
TTL Input Current
–30 to +5.0
mA
Open
H
L
IOUT
PECL Output Current
— Continuous
— Surge
50
100
Tstore
Storage Temperature
–65 to +150
°C
Tamb
Operating Temperature
–40 to +85
°C
mA
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)
VCC = +3.0V to +3.8V
TA = -40°C
Symbol
ICC
Parameter
Min. Max.
Power Supply Current
NOTE:
1. Parametric values specified at:
—
25
3 volt Power Supply Range
TA = 0°C
TA = +25°C
Min. Max. Min. Max.
—
25
—
25
TA = +85°C
Min. Max. Unit
—
25
mA
Condition
—
10/100ELT22L Series: +3.0V to +3.8V.
AC ELECTRICAL CHARACTERISTICS(1)
VCC = +3.0V to +3.8V
TA = -40°C
Symbol
Parameter
TA = 0°C
TA = +25°C TA = +85°C
Min. Max. Min. Max. Min. Max. Min. Max. Unit
Condition
tPLH
tPHL
Propagation Delay to Output D,
ENECL/ENTTL
100
600
100
600
100
600
100
600
ps
50Ω to VCC – 2.0V
tr
tf
Output Rise/Fall Time
20% to 80%
200
500
200
500
200
500
200
500
ps
50Ω to VCC – 2.0V
tskpp
Part-to-Part Skew(2)
—
500
—
500
—
500
—
500
ps
50Ω to VCC – 2.0V
—
100
—
100
—
100
—
100
ps
50Ω to VCC – 2.0V
tskew
Within-Device
Skew(2,3)
NOTES:
1. Parametric values specified at:
3 volt Power Supply Range
2. Guaranteed, but not tested.
3. Same transition @common VCC levels.
10/100ELT22L Series: +3.0V to +3.8V.
2
SY10ELT22L
SY100ELT22L
Micrel
TTL DC ELECTRICAL CHARACTERISTICS(1)
VCC = +3.0V to +3.8V
TA = -40°C
Symbol
Parameter
TA = +25°C
TA = +85°C
Min.
Max.
Min.
TA = 0°C
Max.
Min.
Max.
Min.
Max.
Unit
Condition
VIH
Input HIGH Voltage
2.0
—
2.0
—
2.0
—
2.0
—
V
—
VIL
Input LOW Voltage
—
0.8
—
0.8
—
0.8
—
0.8
V
—
IIH
Input HIGH Current
—
—
20
100
—
—
20
100
—
—
20
100
—
—
20
100
µA
VIN = 2.7V
VIN = VCC
IIL
Input LOW Current
—
–0.2
—
–0.2
—
–0.2
—
–0.2
mA
VIN = 0.5V
VIK
Input Clamp Voltage
—
–1.2
—
–1.2
—
–1.2
—
–1.2
V
NOTE:
1. Parametric values specified at:
3 volt Power Supply Range
IIN = –18mA
10/100ELT22L Series: +3.0V to +3.8V.
PECL DC ELECTRICAL CHARACTERISTICS(1)
VCC = VCC (Min.) to VCC (Max.)
TA = -40°C
Symbol
Parameter
VOL
TA = +25°C
TA = +85°C
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
10ELT 2220
100ELT 2220
—
—
2410
2420
2280
2275
—
—
2460
2420
2320
2275
—
—
2490
2420
2390
2275
—
—
2580
2420
Output LOW Voltage(2)
10ELT 1350
100ELT 1470
—
—
1650
1750
1350
1490
—
—
1670
1680
1350
1490
—
—
1670
1680
1350
1490
—
—
1705
1680
Output HIGH
VOH
Min.
TA = 0°C
Voltage(2)
Unit
mV
mV
NOTES:
1. Parametric values specified at:
3 volt Power Supply Range 10/100ELT22L Series: +3.0V to +3.8V.
2. These values are for VCC = 3.3V. Level Specifications will vary 1:1 with VCC.
PRODUCT ORDERING CODE
Ordering
Code
Package
Type
Operating
Range
Marking
Code
SY10ELT22LZC
Z8-1
Commercial
HEL22L
SY10ELT22LZCTR*
Z8-1
Commercial
SY100ELT22LZC
Z8-1
SY100ELT22LZCTR*
Z8-1
Ordering
Code
Package
Type
Operating
Range
Marking
Code
SY10ELT22LZI(1)
Z8-1
Industrial
HEL22L
HEL22L
SY10ELT22LZITR*(1)
Z8-1
Industrial
HEL22L
Commercial
XEL22L
SY100ELT22LZI(1)
Z8-1
Industrial
XEL22L
Commercial
XEL22L
SY100ELT22LZITR*(1)
Z8-1
Industrial
XEL22L
*Tape and Reel
Note 1.
Recommended for new designs.
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SY10ELT22L
SY100ELT22L
Micrel
8 LEAD SOIC .150" WIDE (Z8-1)
Rev. 03
MICREL, INC.
TEL
1849 FORTUNE DRIVE SAN JOSE, CA 95131
+ 1 (408) 944-0800
FAX
+ 1 (408) 944-0970
WEB
USA
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.
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