Micrel, Inc.
5V/3.3V TTL-TO-DIFFERENTIAL
PECL TRANSLATOR
Precision Edge
®
SY10ELT20V
Precision Edge
®
SY100ELT20V
SY10ELT20V
SY100ELT20V
FEATURES
s
s
s
s
s
3.3V and 5V power supply options
300ps typical propagation delay
Low power
Differential PECL output
PNP TTL input for minimal loading
Precision Edge
®
DESCRIPTION
The SY10/100ELT20V is a single TTL-to-differential
PECL translator. Because PECL (Positive ECL) levels
are used, either +5V or +3.3V and ground are required.
The small outline 8-lead SOIC package and low skew
single gate design make the ELT20V ideal for applications
that require the translation of a clock or data signal where
minimal space, low power, and low cost are critical.
The ELT20V 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 and in die form
PIN NAMES
Pin
Q
D
V
CC
GND
Function
Differential PECL Output
TTL Input
+5V/+3.3V Supply
Ground
Precision Edge is a registered trademark of Micrel, Inc.
M9999-031506
hbwhelp@micrel.com or (408) 955-1690
Rev.: D
Amendment: /0
1
Issue Date: March 2006
Micrel, Inc.
Precision Edge
®
SY10ELT20V
SY100ELT20V
PACKAGE/ORDERING INFORMATION
Ordering Information
(1)
NC 1
Q 2
PECL
TTL
8 V
CC
7 D
6 NC
5 GND
Part Number
SY10ELT20VZC
SY10ELT20VZCTR
(2)
SY100ELT20VZC
SY100ELT20VZCTR
(2)
Package
Type
Z8-1
Z8-1
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
Industrial
Industrial
Package
Marking
HEL20V
HEL20V
XEL20V
XEL20V
HEL20V
HEL20V
XEL20V
XEL20V
HEL20V with
Pb-Free bar-line indicator
HEL20V with
Pb-Free bar-line indicator
XEL20V with
Pb-Free bar-line indicator
XEL20V with
Pb-Free bar-line indicator
Lead
Finish
Sn-Pb
Sn-Pb
Sn-Pb
Sn-Pb
Sn-Pb
Sn-Pb
Sn-Pb
Sn-Pb
Pb-Free
NiPdAu
Pb-Free
NiPdAu
Pb-Free
NiPdAu
Pb-Free
NiPdAu
Q 3
NC 4
8-Pin SOIC (Z8-1)
SY10ELT20VZI
SY10ELT20VZITR
(2)
SY100ELT20VZI
SY100ELT20VZITR
(2)
SY10ELT20VZG
(3)
SY10ELT20VZGTR
(2, 3)
SY100ELT20VZG
(3)
SY100ELT20VZGTR
(2, 3)
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.
M9999-031506
hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
Precision Edge
®
SY10ELT20V
SY100ELT20V
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
Lead Temperature
(soldering, 20sec.)
Storage Temperature
Operating Temperature
Value
–0.5 to +7.0
–0.5 to V
CC
–30 to +5.0
50
100
+260
–65 to +150
–40 to +85
°C
°C
°C
Unit
V
V
mA
mA
TRUTH TABLE
D
H
L
Open
Q
H
L
H
Q
L
H
L
T
LEAD
T
store
T
A
DC ELECTRICAL CHARACTERISTICS
V
CC
= +3.3V
±10%
or +5.0V
±10%
T
A
= –40
°
C
Symbol
I
CC
Parameter
Power Supply Current
Min.
—
Max.
20
T
A
= 0
°
C
Min.
—
Max.
20
—
T
A
= +25
°
C
Min.
Typ.
—
Max.
20
T
A
= +85
°
C
Min.
—
Max.
20
Unit
mA
Condition
—
TTL DC ELECTRICAL CHARACTERISTICS
V
CC
= +3.3V
±10%
or +5.0V
±10%
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
—
—
—
—
—
Typ.
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
PECL DC ELECTRICAL CHARACTERISTICS
V
CC
= +3.3V
±10%
or +5.0V
±10%
T
A
= –40
°
C
Symbol
V
OH
Parameter
Output HIGH Voltage
(2)
10ELT
100ELT
Output LOW Voltage
(1)
10ELT
100ELT
Note 1.
T
A
= 0
°
C
Min.
3980
3975
3050
3190
Max.
T
A
= +25
°
C
Min.
Typ.
—
—
—
—
Max.
4190
4120
3370
3380
T
A
= +85
°
C
Min.
Max.
Unit
mV
Condition
Min.
Max.
3920 4110
3915 4120
3050 3350
3170 3445
4160 4020
4120 3975
3370 3050
3380 3190
4090 4280
3975 4120
mV
3050 3405
3190 3380
V
OL
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.
These values are for V
CC
= 5.0V. Level Specifications will vary 1:1 with V
CC
.
Note 2.
M9999-031506
hbwhelp@micrel.com or (408) 955-1690
3
Micrel, Inc.
Precision Edge
®
SY10ELT20V
SY100ELT20V
AC ELECTRICAL CHARACTERISTICS
(3)
V
CC
= +3.3V
±10%
or +5.0V
±10%
T
A
= –40
°
C
Symbol
t
PLH
t
PHL
t
skpp
f
MAX
t
r
t
f
Note 1.
T
A
= 0
°
C
Min.
100
—
350
200
Max.
600
500
—
500
T
A
= +25
°
C
Min.
100
—
350
200
Typ.
—
—
—
—
Max.
600
500
—
500
T
A
= +85
°
C
Min.
100
—
350
200
Max. Unit
600
500
—
500
ps
ps
MHz
ps
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
Parameter
Propagation Delay
(3)
Part-to-Part Skew
(4)
Maximum Input Frequency
Output Rise/Fall Time
(20% to 80%)
Min.
100
—
350
200
Max.
600
500
—
500
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.
These values are for V
CC
= 5.0V. Level Specifications will vary 1:1 with V
CC
.
Input Rise Time < 1.0ns.
Guaranteed by design. Not tested in production.
Note 2.
Note 3.
Note 4.
M9999-031506
hbwhelp@micrel.com or (408) 955-1690
4
Micrel, Inc.
Precision Edge
®
SY10ELT20V
SY100ELT20V
TOPOGRAPHY AND PAD COORDINATES
V
CC
(Pad 6)
V
CC
(Pad 7)
Q
(Pad 5)
D
(Pad 8)
/Q
(Pad 4)
0.850 mm
1.29mm
NC
(Pad 3)
NC
(Pad 2)
NC
(Pad 9)
GND
(Pad 1)
GND
(Pad 10)
0.850 mm
0.35mm
Figure 1. Chip Topography
PAD COORDINATES TABLE
Pad Number
1
2
3
4
5
6
7
8
9
10
Notes:
CHIP INFORMATION
Transistor Count:
Substrate:
Process:
98
Connect to GND
Bipolar
Coordinates (µm)
(4)
µ
619.5, –344.5
396.5, –344.5
130.5, –344.5
–135.5, –344.5
–401.5, –344.5
–619.5, –344.5
–619.5, 344.5
–427.5, 344.5
427.5, 344.5
619.5, 344.5
1. Contact factory for die availability. Dice are guaranteed at T
A
= 25°C, DC Electricals only. Shipped in waffle pack.
2. Recommended for new designs.
3. Tape and Reel.
4. Coordinates reference from the center of the die.
M9999-031506
hbwhelp@micrel.com or (408) 955-1690
5
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