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Электронный компонент: SY100EL91

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DESCRIPTION
s
620ps typical propagation delay
s
Fully differential design
s
Supports standard operation
s
Available in 20-pin SOIC package
The SY100EL91 is a triple PECL-to-ECL translator. It
receives standard voltage PECL signals and translates
them to different ECL output signals.
A V
BB
output is provided for interfacing with single
ended PECL 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 ground
via a 0.01
F capacitor. The V
BB
output is designed to act
as the switching reference for the EL91 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 EL91 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
F capacitors.
Under open input conditions, the D input will be biased
at V
CC
/2 and the D input will be pulled to GND. This
condition will force the Q output to a LOW, ensuring
stability.
FEATURES
TRIPLE
PECL-TO-ECL TRANSLATOR
PIN CONFIGURATION/BLOCK DIAGRAM
SOIC
TOP VIEW
Pin
Function
Dn
PECL Inputs
Q
n
ECL Outputs
PECL_V
BB
PECL Reference Voltage Output
SY100EL91
FINAL
PIN NAMES
V
CC
GND
GND
V
CC
V
CC
PECL_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
PECL_V
BB
D
2
V
EE
Q
0
Q
0
Q
1
Q
2
Q
1
Q
2
EC
L
PECL
D
1
D
0
EC
L
PECL
EC
L
PECL
1
Rev.: C
Amendment: /0
Issue Date:
February 2003
2
SY100EL91
Micrel
PECL INPUT 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
CC
Power Supply Voltage
4.75
--
5.25
4.75
--
5.25
4.75
--
5.25
4.75
--
5.25
V
V
IH
Input HIGH Voltage
(1)
3.835
--
4.120
3.835
--
4.120
3.835
--
4.120
3.835
--
4.120
V
V
IL
Input LOW Voltage
(1)
3.190
--
3.525
3.190
--
3.525
3.190
--
3.525
3.190
--
3.525
V
I
IH
Input HIGH Current
--
--
150
--
--
150
--
--
150
--
--
150
A
I
IL
Input LOW Current Dn
0.5
--
--
0.5
--
--
0.5
--
--
0.5
--
--
A
Dn
600
--
--
600
--
--
600
--
--
600
--
--
V
BB
Output Reference
(1)
3.620
--
3.740
3.620
--
3.740
3.620
--
3.740
3.620
--
3.740
V
I
CC
Power Supply Current
--
--
11
--
--
11
--
6.0
11
--
--
11
mA
ECL OUTPUT DC ELECTRICAL CHARACTERISTICS
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
EE
Power Supply Voltage
4.2
--
5.5
4.2
--
5.5
4.2
--
5.5
4.2
--
5.5
V
V
OH
Output HIGH Voltage
1085
--
880 1025
--
880 1025 955
880
1025
--
880
mV
V
OL
Output LOW Voltage
1830
--
1555 1810
--
1620 1810 1705 1620 1810
--
1620
mV
I
EE
Power Supply Current
--
--
28
--
--
28
--
22
28
--
--
30
mA
3
SY100EL91
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.
520
620
720
520
620
720
520
620
720
550
650
750
ps
t
PHL
D to Q
S.E.
470
620
770
470
620
770
470
620
770
500
650
800
t
skew
Within-Device Skew
(1)
Output-to-Output
--
--
100
--
--
100
--
20
100
--
--
100
ps
Part-to-Part (Diff.)
--
--
200
--
--
200
--
--
200
--
--
200
Duty Cycle (Diff.)
--
25
--
--
25
--
--
25
--
--
25
--
V
PP
Minimum Input Swing
(2)
200
--
--
200
--
--
200
--
--
200
--
--
mV
V
CMR
Common Mode Range
(3)
V
V
PP
< 500mV
1.3
--
V
CC
0.2
1.2
--
V
CC
0.2
1.2
--
V
CC
0.2
1.2
--
V
CC
0.2
V
PP
> 500mV
1.5
--
V
CC
0.2
1.4
--
V
CC
0.2
1.4
--
V
CC
0.2
1.4
--
V
CC
0.2
t
r
Output Rise/Fall Times Q
320
400
580
320
400
580
320
400
580
320
400
580
ps
t
f
(20% to 80%)
AC ELECTRICAL CHARACTERISTICS
PECL: V
CC
= +4.75V to +5.25V, ECL: V
EE
= -4.2V to -5.5V
NOTES:
1. Skew is measured between outputs under identical transitions.
2. Minimum input swing for which AC parameters are guaranteed. The device has a DC gain of ~40.
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.
PRODUCT ORDERING CODE
Ordering
Package
Operating
Marking
Code
Type
Range
Code
SY100EL91ZC
Z20-1
Commercial
XEL91
SY100EL91ZCTR*
Z20-1
Commercial
XEL91
*Tape and Reel
Ordering
Package
Operating
Marking
Code
Type
Range
Code
SY100EL91ZI
(1)
Z20-1
Industrial
XEL91
SY100EL91ZITR*
(1)
Z20-1
Industrial
XEL91
*Tape and Reel
Note 1.
Recommended for new designs.
4
SY100EL91
Micrel
20 LEAD SOIC .300" WIDE (Z20-1)
Rev. 03
MICREL, INC.
1849 FORTUNE DRIVE
SAN JOSE, CA 95131
USA
TEL
+ 1 (408) 944-0800
FAX
+ 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.
2003 Micrel, Incorporated.