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1
FN7199
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2003. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
EL5481, EL5482
Quad 8ns High-Speed Comparators
The EL5481 and EL5482 comparators
are designed for operation in single
supply and dual supply applications
with 5V to 12V between V
S
+ and V
S
-. For single supplies,
the inputs can operate from 0.1V below ground for use in
ground sensing applications.
The output side of the comparators can be supplied from a
single supply of 2.7V to 5V. The rail-to-rail output swing
enables direct connection of the comparator to both CMOS
and TTL logic circuits.
The latch input of the EL5482 can be used to hold the
comparator output value by applying a low logic level to the
pin.
The EL5481 is available in the 16-pin SO (0.150") package
and the EL5482 in the 24-pin QSOP package. All are
specified for operation over the full -40C to +85C
temperature range. Also available are a single (EL5181), a
dual (EL5281), and a window comparator (EL5283).
Pinouts
Features
8ns Typ. Propagation Delay
5V to 12V Input Supply
+2.7V to +5V Output Supply
True-to-ground Input
Rail-to-rail Outputs
Active Low Latch
Single (EL5181) Available
Dual (EL5281) Available
Window Available (EL5283)
Pin-compatible 4ns Family Available (EL5185, EL5285,
EL5287, EL5485 & EL5486)
Applications
Threshold Detection
High Speed Sampling Circuits
High Speed Triggers
Line Receivers
PWM Circuits
High Speed V/F Converters
1
2
3
4
16
15
14
13
5
6
7
12
11
10
8
9
IND-
INA-
IND+
VS+
OUTD
OUTC
VSD
INC+
INC-
INA+
GND
OUTA
OUTB
VS-
INB+
INB-
-
+
+
+
+
-
-
-
EL5481
[16-PIN SO (0.150")]
TOP VIEW
1
2
3
4
16
15
14
13
5
6
7
12
11
9
8
10
20
19
18
17
24
23
22
21
EL5482
(24-PIN QSOP)
TOP VIEW
-
+
-
+
-
+
-
+
INA-
INA+
NC
LATCHA
LATCHB
NC
INB+
INB-
GND
VS-
OUTA
OUTB
IND-
IND+
NC
LATCHD
LATCHC
NC
INC+
INC-
VSD
VS+
OUTD
OUTC
Ordering Information
PART NUMBER
PACKAGE
TAPE &
REEL
PKG. NO.
EL5481CS
16-Pin SO (0.150")
-
MDP0027
EL5481CS-T7
16-Pin SO (0.150")
7"
MDP0027
EL5481CS-T13
16-Pin SO (0.150")
13"
MDP0027
EL5482CU
24-Pin QSOP
-
MDP0040
EL5482CU-T13
24-Pin QSOP
13"
MDP0040
Data Sheet
June 14, 2001
OBS
OLE
TE P
ROD
UCT
NO R
ECO
MME
NDE
D RE
PLAC
EME
NT
cont
act o
ur T
echn
ical
Sup
port
Cen
ter a
t
1-88
8-IN
TER
SIL
or w
ww.
inte
rsil.c
om/t
sc
2
Absolute Maximum Ratings
(T
A
= 25C)
Analog Supply Voltage (V
S
+ to V
S
-) . . . . . . . . . . . . . . . . . . . +12.6V
Digital Supply Voltage (V
SD
to GND). . . . . . . . . . . . . . . . . . . . . .+7V
Differential Input Voltage . . . . . . . . . . .[(V
S
-) -0.2V] to [(V
S
+) +0.2V]
Common-mode Input Voltage . . . . . . .[(V
S
-) -0.2V] to [(V
S
+) +0.2V]
Latch Input Voltage . . . . . . . . . . . . . . . . . . . . -0.2V to [(V
SD
)
+0.2V]
Storage Temperature Range . . . . . . . . . . . . . . . . . . -65C to +150C
Ambient Operating Temperature . . . . . . . . . . . . . . . . -40C to +85C
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 125C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests
are at the specified temperature and are pulsed tests, therefore: T
J
= T
C
= T
A
Electrical Specifications
V
S
= 5V, V
SD
= 5V, R
L
= 2.3k
, C
L
= 15pF, T
A
= 25C, unless otherwise specified.
PARAMETER
DESCRIPTION
CONDITION
MIN
TYP
MAX
UNIT
INPUT
V
OS
Input Offset Voltage
V
CM
= 0V, V
O
= 2.5V
1
4
mV
I
B
Input Bias Current
-6
-3.5
A
C
IN
Input Capacitance
5
pF
I
OS
Input Offset Current
V
CM
= 0V, V
O
= 2.5V
-2.5
0.5
2.5
A
V
CM
Input Voltage Range
(V
S
-) -0.1
(V
S
+) -2.25
V
CMRR
Common-mode Rejection Ratio
-5.1V < V
CM
< +2.75V
65
90
dB
OUTPUT
V
OH
Output High Voltage
V
IN
> 250mV
V
SD
-0.6
V
SD
-0.4
V
V
OL
Output Low Voltage
V
IN
> 250mV
GND +0.25
GND +0.5
V
DYNAMIC PERFORMANCE
t
pd
+
Positive Going Delay Time
V
IN
= 1V
P-P
, V
OD
= 50mV
8
12
ns
t
pd
-
Negative Going Delay Time
V
IN
= 1V
P-P
, V
OD
= 50mV
8
12
ns
SUPPLY
I
S
+
Positive Analog Supply Current
(per comparator)
7
8.2
mA
I
S
-
Negative Analog Supply Current
(per comparator)
5
6.5
mA
I
SD
Digital Supply Current
(per comparator) All outputs high
4
5
mA
(per comparator) All outputs low
0.75
1
mA
PSRR
Power Supply Rejection Ratio
60
80
dB
LATCH - EL5482 ONLY
V
LH
Latch Input Voltage High
2.0
V
V
LL
Latch Input Voltage Low
0.8
V
I
LH
Latch Input Current High
V
LH
= 3.0V
-30
-18
A
I
LL
Latch Input Current Low
V
LL
= 0.3V
-30
-24
A
t
d
+
Latch Disable to High Delay
6
ns
t
d
-
Latch Disable to Low Delay
6
ns
t
s
Minimum Setup Time
2
ns
t
h
Minimum Hold Time
1
ns
t
pw
(D)
Minimum Latch Disable Pulse Width
10
ns
EL5481, EL5482
3
Typical Performance Curves
Positive Supply Current vs Temperature
(per comparator)
7.15
7.1
7.05
7
6.95
6.9
6.85
6.8
6.75
6.7
-50
-30
-10
10
30
50
70
90
Temperature (C)
I
S
+ (mA)
Negative Supply Current vs Temperature
(per comparator)
-4.4
-4.5
-4.6
-4.7
-4.8
-4.9
-5
-5.1
-5.2
-50
-30
-10
10
30
50
70
90
Temperature (C)
I
S
- (m
A
)
Input Bias Current vs Temperature
6
5
4
3
2
1
0
-50
-30
-10
10
30
50
70
90
Temperature (C)
IB (A)
Offset Voltage vs Temperature
0.7
0.6
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-50
-30
-10
10
30
50
70
90
Temperature (C)
V
OS
(m
V
)
0.5
Negative Supply Current vs Negative Supply Voltage (per
comparator)
5.5
3
5
3.5
4.5
4
0
7
1
2
3
4
5
6
V
S
- (V)
I
S
- (mA)
7
0
5
1
3
2
I
S
+ (m
A)
Positive Supply Current vs Supply Voltage
(per comparator)
0
7
1
2
3
4
5
6
V
S
+ (V)
6
4
V
S
-=-5V
V
SD
=5V
V
IN
=50mV
T
A
=25C
V
S
+=5V
V
SD
=5V
V
IN
=50mV
T
A
=25C
EL5481, EL5482
4
Typical Performance Curves
(Continued)
Propagation Delay vs Supply Voltage
10
9.5
8.5
7.5
7
6.5
6
5.5
5
9
8
4
4.5
5
5.5
6
V
S
(V)
D
e
la
y
T
i
m
e
(
n
s)
T
pd
+
T
pd
-
V
SD
=V
S
+
V
IN
=1V Step
V
OD
=50mV
R
L
=2.2k
Propagation Delay vs Overdrive
10
9.5
8.5
8
7.5
7
6.5
6
9
0
0.2
0.6
1
1.2
1.6
2
V
OD
(V)
D
e
la
y
T
i
m
e
(
n
s)
T
pd
+
T
pd
-
V
S
=5V
V
SD
=5V
V
IN
=3V Step
R
L
=2.2k
0.4
0.8
1.4
1.8
Propagation Delay vs Overdrive
11
10.5
9.5
9
8.5
8
7.5
7
10
0
0.5
1
2
3
V
OD
(V)
De
la
y Ti
m
e
(
n
s)
T
pd
+
T
pd
-
V
S
=5V
V
SD
=5V
R
L
=2.2k
V
IN
=5V Step
1.5
2.5
Propagation Delay vs Source Resistance
20
18
14
12
10
8
6
4
16
0
0.2
0.4
1
1.6
Source Resistance (k
)
De
la
y Ti
m
e
(
n
s)
T
pd
+
T
pd
-
0.6
1.4
1.2
0.8
V
S
=5V
V
SD
=5V
R
L
=2.2k
V
IN
=1V Step
V
OD
=50mV
Propagation Delay vs Overdrive
10
9.5
8.5
7.5
7
6.5
6
5.5
5
9
8
0
100
200
300
400
500
600
V
OD
(mV)
D
e
la
y
T
i
m
e
(
n
s)
T
pd
+
T
pd
-
V
S
=5V
V
SD
=5V
V
IN
=1V Step
R
L
=2.2k
Propagation Delay vs Load Capacitance
12
10
9
8
7
6
11
0
20
40
60
80
100
120
C
LOAD
(pF)
D
e
la
y
T
i
m
e
(
n
s)
T
pd
+
T
pd
-
V
S
=5V
V
SD
=5V
R
L
=2.2k
V
IN
=1V Step
V
OD
=50mV
EL5481, EL5482
5
Typical Performance Curves
(Continued)
0
10
2
4
6
Load Current (mA)
Output Low Voltage vs Load Current
0.31
0.15
0.27
Outp
ut Lo
w V
o
l
t
a
g
e (V)
8
0.23
0.19
V
S
=5V
V
SD
=5V
V
IN
=-50mV
0
10
2
4
6
Load Current (mA)
8
Output High Voltage vs Load Current
4.75
4.3
4.7
O
u
t
put High V
o
lt
a
g
e (V
)
4.65
4.6
4.55
4.5
4.45
4.4
4.35
V
S
=5V
V
SD
=5V
V
IN
=50mV
1087mW
QS
OP
24
11
5C
/W
Power Dissipation vs Ambient Temperature
1.4
0
1
0.6
0.4
0.2
P
o
wer D
i
ssi
pation
(W
)
1.2
0.8
0
125
100
75
50
25
Ambient Temperature (C)
150
85
909mW
SO
16
JA =
11
0C
/W
2V
V
IN
=1V
P-P
F
IN
=30MHz
1V
20ns
V
S
=5V
V
SD
=5V
Output with 30MHz Input
V
IN
=1V
P-P
2V
2V
20ns
V
IN
=3V
P-P
F
IN
=30MHz
V
S
=5V
V
SD
=5V
Output with 30MHz Input
V
IN
=3V
P-P
V
O
V
IN
V
O
V
IN
T
A
=-40C
T
A
=85C
T
A
=25C
T
A
=-40C
T
A
=85C
T
A
=25C
Digital Supply Current vs Input Switching Frequency (per
comparator)
30
0
25
15
10
5
I
SD
(m
A
)
20
0
45
35
25
15
5
Frequency (MHz)
50
40
30
20
10
V
SD
=5V
V
SD
=3V
V
S
=5V
EL5481, EL5482
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