The EL5281C comparator is 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 comparator can be supplied from a single sup-
ply 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 EL5281C can be used to hold the comparator
output value by applying a low logic level to the pin. The EL5281C
features two separate comparators.
The EL5281C is available in the 14-pin SO package and is specified
for operation over the full -40°C to +85°C temperature range. Also
available are a single (EL5181C) and quad versions (EL5481C and
EL5482C).
Applications
•
•
•
•
•
•
Threshold Detection
High Speed Sampling Circuits
High Speed Triggers
Line Receivers
PWM Circuits
High Speed V/F Converters
Pin Configuration
Ordering Information
Part No.
EL5281CS
EL5281CS-T7
EL5281CS-T13
Package
14-Pin SO
14-Pin SO
14-Pin SO
Tape & Reel
-
7”
13”
Outline #
MDP0027
MDP0027
MDP0027
VS+ 1
INA+ 2
INA- 3
NC 4
INB+ 5
+
INB- 6
VS- 7
EL5281C
14-Pin SO
-
+
-
14 VSD
13 OUTA
12 LATCHA
11 NC
10 LATCHB
9 OUTB
8 GND
June 14, 2001
Note:
All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.
Absolute maximum ratings are those values beyond which the device
could be permanently damaged. Absolute maximum ratings are stress
ratings only and functional device operation is not implied.
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
Latch Input Voltage
Storage Temperature Range
Ambient Operating Temperature
Operating Junction Temperature
Power Dissipation
[(V
S
-) -0.2V] to [(V
S
+) +0.2V]
-0.2V to [(V
SD
) +0.2V]
-65°C to +150°C
-40°C to +85°C
125°C
See Curves
Important Note:
All parameters having Min/Max specifications are guaranteed. Typ 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 Characteristics
V
S
=
±5V,
V
SD
= 5V, R
L
= 2.3kΩ, C
L
= 15pF, T
A
= 25°C, unless otherwise specified.
Parameter
Input
V
OS
I
B
C
IN
I
OS
V
CM
CMRR
Output
V
OH
V
OL
t
pd
+
t
pd
-
Supply
I
S
+
I
S
-
I
SD
PSRR
Latch
V
LH
V
LL
I
LH
I
LL
t
d
+
t
d
-
t
s
t
h
t
pw
(D)
Latch Input Voltage High
Latch Input Voltage Low
Latch Input Current High
Latch Input Current Low
Latch Disable to High Delay
Latch Disable to Low Delay
Minimum Setup Time
Minimum Hold Time
Minimum Latch Disable Pulse Width
V
LH
= 3.0V
V
LL
= 0.3V
0.8
-30
-30
-18
-24
6
6
2
1
10
2.0
V
V
µA
µA
ns
ns
ns
ns
ns
Positive Analog Supply Current
Negative Analog Supply Current
Digital Supply Current
Power Supply Rejection Ratio
Output high
Output low
60
7
5
4
0.75
80
8.2
6.5
5
1
mA
mA
mA
mA
dB
Output High Voltage
Output Low Voltage
Positive Going Delay Time
Negative Going Delay Time
V
IN
> 250mV
V
IN
> 250mV
V
IN
= 1V
P-P
, V
OD
= 50mV
V
IN
= 1V
P-P
, V
OD
= 50mV
V
SD
- 0.6
V
SD
- 0.4
GND + 0.25
8
8
GND + 0.5
12
12
V
V
ns
ns
Input Offset Voltage
Input Bias Current
Input Capacitance
Input Offset Current
Input Voltage Range
Common-mode Rejection Ratio
-5.1V < V
CM
< +2.75V
V
CM
= 0V, V
O
= 2.5V
-2.5
(V
S
-) - 0.1
65
90
V
CM
= 0V, V
O
= 2.5V
-6
1
-3.5
5
0.5
2.5
(V
S
+) - 2.25
4
mV
µA
pF
µA
V
dB
Description
Condition
Min
Typ
Max
Unit
Dynamic Performance
2
EL5281C
EL5281C
Dual 8ns High-Speed Comparator
Typical Performance Curves
Positive Supply Current vs Temperature
7.15
7.1
7.05
7
I
S
+ (mA)
I
S
- (mA)
6.95
6.9
6.85
6.8
6.75
6.7
-50
-30
-10
10
30
50
70
90
-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
Negative Supply Current vs Temperature
Temperature (°C)
Positive Supply Current vs Supply Voltage
7
6
5
I
S
+ (mA)
4
3
2
1
0
3.5
3
V
S
-=-5V
V
SD
=5V
V
IN
=50mV
T
A
=25°C
I
S
- (mA)
5.5
5
4.5
4
Temperature (°C)
Negative Supply Current vs Negative Supply
Voltage
V
S
+=5V
V
SD
=5V
V
IN
=50mV
T
A
=25°C
0
1
2
3
V
S
+ (V)
4
5
6
7
0
1
2
3
V
S
- (V)
4
5
6
7
Input Bias Current vs Temperature
6
5
4
3
2
1
0
-50
V
OS
(mV)
IB (µA)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-30
-10
10
30
50
70
90
Offset Voltage vs Temperature
-0.3
-50
-30
-10
10
30
50
70
90
Temperature (°C)
Temperature (°C)
3
EL5281C
EL5281C
Dual 8ns High-Speed Comparator
Typical Performance Curves
Propagation Delay vs Overdrive
10
9.5
9
8.5
Delay Time (ns)
8
7.5
7
6.5
6
5.5
5
0
100
200
300
V
OD
(mV)
Propagation Delay vs Supply Voltage
10
9.5
9
8.5
Delay Time (ns)
8
7.5
7
6.5
6
5.5
5
4
4.5
5
±V
S
(V)
Propagation Delay vs Overdrive
11
10.5
10
Delay Time (ns)
9.5
9
8.5
8
7.5
7
0
0.5
1
1.5
V
OD
(V)
2
2.5
3
T
pd
-
V
S
=±5V
V
SD
=5V
R
L
=2.2kΩ
V
IN
=5V Step
Delay Time (ns)
T
pd
+
20
18
16
14
12
10
8
6
4
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
T
pd
-
5.5
6
T
pd
-
V
SD
=V
S
+
V
IN
=1V Step
V
OD
=50mV
R
L
=2.2kΩ
T
pd
+
Delay Time (ns)
10
9.5
9
8.5
8
7.5
7
6.5
6
0
V
S
=±5V
V
SD
=5V
V
IN
=3V Step
R
L
=2.2kΩ
0.2
0.4
0.6
0.8
1
V
OD
(V)
Propagation Delay vs Source Resistance
V
S
=±5V
V
SD
=5V
R
L
=2.2kΩ
V
IN
=1V Step
V
OD
=50mV
1.2
T
pd
-
T
pd
+
400
500
600
6
0
20
40
60
C
LOAD
(pF)
Propagation Delay vs Overdrive
80
100
120
T
pd
-
V
S
=±5V
V
SD
=5V
V
IN
=1V Step
R
L
=2.2kΩ
Delay Time (ns)
T
pd
+
12
11
10
9
8
7
T
pd
-
Propagation Delay vs Load Capacitance
V
S
=±5V
V
SD
=5V
R
L
=2.2kΩ
V
IN
=1V Step
V
OD
=50mV
T
pd
+
1.4
1.6
1.8
2
T
pd
+
Source Resistance (kΩ)
4
EL5281C
EL5281C
Dual 8ns High-Speed Comparator
Typical Performance Curves
Output Low Voltage vs Load Current
0.31
T
A
=85°C
Output High Voltage (V)
4.75
4.7
Output Low Voltage (V)
0.27
T
A
=25°C
0.23
4.65
4.6
4.55
4.5
4.45
4.4
4.35
10
4.3
0
2
4
6
8
10
T
A
=85°C
T
A
=25°C
T
A
=-40°C
Output High Voltage vs Load Current
V
S
=±5V
V
SD
=5V
V
IN
=50mV
0.19
T
A
=-40°C
V
S
=±5V
V
SD
=5V
V
IN
=-50mV
6
8
0.15
0
2
4
Load Current (mA)
Load Current (mA)
Package Power Dissipation vs Ambient Temp.
JEDEC JESD51-3 Low Effective Thermal Conductivity Test Board
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