DESCRIPTION
s
3.3V and 5V power supply options
s
500ps propagation delay
s
Fully differential design
s
Supports both standard and low voltage operation
s
Available in 20-pin SOIC package
The SY100EL90V is a triple ECL/LVECL-to-PECL/
LVPECL translator. The device can translate over all
combinations of supply voltages: -5V ECL to 5V PECL,
-5V ECL to 3.3V LVPECL, -3.3V LVECL to 5V PECL or
-3.3V LVECL to 3.3V LVPECL.
A V
BB
output is provided for interfacing with single
ended ECL signals at the input. If a single ended input is
to be used, the V
BB
output should be connected to the D
input. The active signal would then drive the D input.
When used, the V
BB
output should be bypassed to via a
0.01
µ
F capacitor. The V
BB
output is designed to act as
the switching reference for the EL90V under single ended
input switching conditions. As a result this pin can only
source/sink up to 0.5mA of current.
To accomplish the level translation the EL90V requires
three power rails. The V
CC
supply should be connected
to the positive supply, and the V
EE
pin should be
connected to the negative power supply. The GND pins
as expected are connected to the system ground plane.
Both V
EE
and V
CC
should be bypassed to ground via
0.01
µ
F capacitors.
Under open input conditions, the D input will be biased
at V
CC
/2 and the D input will be pulled to V
EE
. This
condition will force the Q output to a LOW, ensuring
stability.
FEATURES
5V/3.3V TRIPLE ECL/LVECL-TO-
PECL/LVPECL TRANSLATOR
PIN CONFIGURATION/BLOCK DIAGRAM
SOIC
TOP VIEW
Pin
Function
Dn
ECL/LVECL Inputs
Q
n
PECL/LVPECL Outputs
V
BB
ECL/LVECL Reference Voltage Output
SY100EL90V
Rev.: F
Amendment: /1
Isse Date:
October, 1998
PIN NAMES
D
2
V
CC
GND
GND
V
CC
V
CC
V
BB
D
2
D
1
D
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
V
BB
V
EE
Q
0
Q
0
Q
1
Q
2
Q
1
Q
2
PECL
EC
L
PECL
EC
L
PECL
EC
L
D
1
D
0
FUNCTION TABLE
Function
V
CC
GND
V
EE
5V ECL to 5V PECL
5V
0V
5V
5V ECL to 3.3V LVPECL
3.3V
0V
5V
3.3V LVECL to 5V PECL
5V
0V
3.3V
3.3V LVECL to 3.3V LVPECL
3.3V
0V
3.3V
1
2
SY100EL90V
Micrel
ECL/LVECL INPUT DC ELECTRICAL CHARACTERISTICS
LVPECL OUTPUT DC ELECTRICAL CHARACTERISTICS
T
A
= 40
°
C
T
A
= 0
°
C
T
A
= +25
°
C
T
A
= +85
°
C
Symbol
Parameter
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Unit
V
OH
Output HIGH Voltage
(1)
2.215
--
2.420
2.275
--
2.420 2.275 2.350 2.420
2.275
--
2.420
V
V
OL
Output LOW Voltage
(1)
1.470
--
1.745
1.490
--
1.680 1.490 1.600 1.680
1.490
--
1.680
V
I
CC
Power Supply Current
--
--
24
--
--
24
--
20
24
--
--
26
mA
NOTE:
1. These levels are for V
CC
= 3.3V. Level specifications will vary 1:1 with V
CC
.
PECL OUTPUT DC ELECTRICAL CHARACTERISTICS
T
A
= 40
°
C
T
A
= 0
°
C
T
A
= +25
°
C
T
A
= +85
°
C
Symbol
Parameter
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Unit
V
OH
Output HIGH Voltage
(1)
3.915
--
4.120
3.975
--
4.120
3.975 4.050 4.120
3.975
--
4.120
V
V
OL
Output LOW Voltage
(1)
3.170
--
3.445
3.190
--
3.380
3.190 3.300 3.380
3.190
--
3.380
V
I
CC
Power Supply Current
--
--
24
--
--
24
--
20
24
--
--
26
mA
NOTE:
1. These values are for V
CC
= 5V. Level specifications will vary 1:1 with V
CC.
T
A
= 40
°
C
T
A
= 0
°
C
T
A
= +25
°
C
T
A
= +85
°
C
Symbol
Parameter
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Unit
V
IH
Input HIGH Voltage
1165
--
880 1165
--
880 1165
--
880 1165
--
880
mV
V
IL
Input LOW Voltage
1810
--
1475 1810
--
1475 1810
--
1475 1810
--
1475
mV
I
EE
Power Supply Current
--
--
8
--
--
8
--
--
8
--
--
8
mA
I
IH
Input HIGH Current
--
--
150
--
--
150
--
--
150
--
--
150
µ
A
I
IL
Input LOW Current Dn
0.5
--
--
0.5
--
--
0.5
--
--
0.5
--
--
µ
A
Dn
600
--
--
600
--
--
600
--
--
600
--
--
V
BB
Output Reference
1.38
--
1.26 1.38
--
1.26 1.38
--
1.26 1.38
--
1.26
V
V
PP
Minimum Peak-to-Peak
150
--
--
150
--
--
150
--
--
150
--
--
mV
Input
ECL: V
EE
= 4.2V to 5.5V; LVECL: V
EE
= 3.0V to 3.8V
V
CC
= +3.0V to +3.8V
V
CC
= +4.2V to +5.5V
3
SY100EL90V
Micrel
T
A
= 40
°
C
T
A
= 0
°
C
T
A
= +25
°
C
T
A
= +85
°
C
Symbol
Parameter
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max. Unit
t
PLH
Propagation Delay
Diff.
390
--
590
410
--
610
420
--
620
460
--
660
ps
t
PHL
D to Q
S.E.
340
--
640
360
--
660
370
--
670
410
--
710
t
skew
Within-Device Skew
(1)
Output-to-Output
--
20
100
--
20
100
--
20
100
--
20
100
ps
Part-to-Part (Diff.)
--
--
200
--
--
200
--
--
200
--
--
200
Duty Cycle (Diff.)
--
25
--
--
25
--
--
25
--
--
25
--
V
PP
Minimum Input Swing
(2)
150
--
--
150
--
--
150
--
--
150
--
--
mV
V
CMR
Common Mode Range
(3)
--
--
0.4
--
--
0.4
--
--
0.4
--
--
0.4
V
t
r
Output Rise/Fall Times Q
230
--
500
230
--
500
230
--
500
230
--
500
ps
t
f
(20% to 80%)
AC ELECTRICAL CHARACTERISTICS
PRODUCT ORDERING CODE
Ordering
Package
Operating
Code
Type
Range
SY100EL90VZC
Z20-1
Commercial
SY100EL90VZCTR
Z20-1
Commercial
NOTES:
1. Skew is measured between outputs under identical transitions.
2. Minimum input swing for which AC parameters are guaranteed. The device will function reliably with differential inputs down to 100mV.
3. The CMR range is referenced to the most positive side of the differential input signal. Normal operation is obtained if the HIGH level falls within the specified
range and the peak-to-peak voltage lies between V
PP
min. and 1V. V
CMR
min. depends on V
EE
, V
PP
and temperature at V
PP
<500mV and 40°C, V
CMR
is V
EE
+1.3V; and for 085°C, V
CMR
is V
EE
+1.2V. At V
PP
500mV and 40°C, V
CMR
is V
EE
+1.5V; and for 085°C, V
CMR
is V
EE
+1.4V.
ECL: V
EE
= 4.2V to 5.5V; LVECL: V
EE
= 3.0V to 3.8V; PECL: V
CC
= +4.2V to +5.5V; LVPECL: V
CC
= +3.0V to +3.8V
4
SY100EL90V
Micrel
20 LEAD SOIC .300" WIDE (Z20-1)
Rev. 03
MICREL-SYNERGY
3250 SCOTT BOULEVARD
SANTA CLARA
CA 95054
USA
TEL
+ 1 (408) 980-9191
FAX
+ 1 (408) 914-7878
WEB
http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or
other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc.
© 2000 Micrel Incorporated
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