ELANT EL5481CU-T13, EL5481CU, EL5481CS-T7, EL5481CS-T13, EL5481CS Datasheet

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.

© 2001 Elantec Semiconductor, Inc.

EL5481C/EL5482C

General Description

The EL5481C and EL5482C comparators are designed for operation
in single supply and dual supply applications with 5V to 12V between
VS+ and VS-. 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 EL5482C can be used to hold the comparator
output value by applying a low logic level to the pin.

The EL5481C is available in the 16-pin SO (0.150") package and the
EL5482C in the 24-pin QSOP package. All are specified for operation
over the full -40°C to +85°C temperature range. Also available are a
single (EL5181C), a dual (EL5281C), and a window comparator
(EL5283C).

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-

-+ +++-

- -

EL5481CS

16-Pin SO (0.150")

Pin Configurations

1

2

3

4

16

15

14

13

5

6

7

12

11

9

8

10

20

19

18

17

24

23

22

21

EL5482CU

24-Pin QSOP

- +-+

-+

-+

INA-

INA+

NC

LATCHA

LATCHB

NC

INB+

INB-

GND

VS-

OUTA

OUTB

IND-

IND+

NC

LATCHD

LATCHC

NC

INC+

INC-

VSD

VS+

OUTD

OUTC

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 (EL5181C) Available

• Dual (EL5281C) Available

• Window Available (EL5283C)

• Pin-compatible 4ns Family
Available (EL5185C, EL5285C,
EL5287C, EL5485C & EL5486C)

Applications

• Threshold Detection

• High Speed Sampling Circuits

• High Speed Triggers

• Line Receivers

• PWM Circuits

• High Speed V/F Converters

Ordering Information

Part No. Package

Tape &

Reel Outline #

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

EL5481C/EL5482C

Quad 8ns High-Speed Comparators

June 14, 2001

2

EL5481C/EL5482C

Quad 8ns High-Speed Comparators

EL5481C/EL5482C

Absolute Maximum Ratings (T

A

= 25°C)

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 (VS+ to VS-) +12.6V
Digital Supply Voltage (VSD to GND) +7V
Differential Input Voltage [(VS-) -0.2V] to [(VS+) +0.2V]

Common-mode Input Voltage [(VS-) -0.2V] to [(VS+) +0.2V]
Latch Input Voltage -0.2V to [(VSD) +0.2V]
Storage Temperature Range -65°C to +150°C
Ambient Operating Temperature -40°C to +85°C
Operating Junction Temperature 125°C
Power Dissipation 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: TJ = TC = TA.

Electrical Characteristics

VS = ±5V, VSD = 5V, RL = 2.3kΩ, CL = 15pF, TA = 25°C, unless otherwise specified.

Parameter Description Condition Min Typ Max Unit

Input

V

OS

Input Offset Voltage V

CM

= 0V, VO = 2.5V 1 4 mV

I

B

Input Bias Current -6 -3.5 µA

C

IN

Input Capacitance 5 pF

I

OS

Input Offset Current V

CM

= 0V, VO = 2.5V -2.5 0.5 2.5 µA

V

CM

Input Voltage Range (VS-) - 0.1 (VS+) - 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 VSD - 0.6 VSD - 0.4 V

V

OL

Output Low Voltage V

IN

> 250mV GND + 0.25 GND + 0.5 V

Dynamic Performance

tpd+ Positive Going Delay Time VIN = 1V

P-P

, VOD = 50mV 8 12 ns

tpd- Negative Going Delay Time VIN = 1V

P-P

, VOD = 50mV 8 12 ns

Supply

IS+ Positive Analog Supply Current (per comparator) 7 8.2 mA
IS- 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 - EL5482C 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 µA

I

LL

Latch Input Current Low V

LL

= 0.3V -30 -24 µA
td+ Latch Disable to High Delay 6 ns
td- Latch Disable to Low Delay 6 ns
t

s

Minimum Setup Time 2 ns

t

h

Minimum Hold Time 1 ns

tpw(D) Minimum Latch Disable Pulse Width 10 ns

3

EL5481C/EL5482C

Quad 8ns High-Speed Comparators

EL5481C/EL5482C

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

- (mA)

Input Bias Current vs Temperature

6

5

4

3

2

1

0

-50 -30 -10 10 30 50 70 90
Temperature (°C)

IB (µA)

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

(mV)

0.5

Negative Supply Current vs Negative Supply
Voltage (per comparator)

5.5

3

5

3.5

4.5

4

0 71 2 3 4 5 6

VS- (V)

I

S

- (mA)

7

0

5

1

3

2

I

S

+ (mA)

Positive Supply Current vs Supply Voltage
(per comparator)

0 71 2 3 4 5 6

VS+ (V)

6

4

VS-=-5V
VSD=5V
VIN=50mV
TA=25°C

VS+=5V
VSD=5V
VIN=50mV
TA=25°C

4

EL5481C/EL5482C

Quad 8ns High-Speed Comparators

EL5481C/EL5482C

Typical Performance Curves

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

±VS (V)

Delay Time (ns)

Tpd+

Tpd-

VSD=VS+
VIN=1V Step
VOD=50mV
RL=2.2kΩ

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

VOD (V)

Delay Time (ns)

Tpd+

Tpd­VS=±5V
VSD=5V
VIN=3V Step
RL=2.2kΩ

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

VOD (V)

Delay Time (ns)

Tpd+

Tpd-

VS=±5V
VSD=5V
RL=2.2kΩ
VIN=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 (kΩ)

Delay Time (ns)

Tpd+

Tpd-

0.6 1.41.20.8

VS=±5V
VSD=5V
RL=2.2kΩ
VIN=1V Step
VOD=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

VOD (mV)

Delay Time (ns)

Tpd+

Tpd-

VS=±5V
VSD=5V
VIN=1V Step
RL=2.2kΩ

Propagation Delay vs Load Capacitance

12

10

9

8

7

6

11

0 20 40 60 80 100 120

C

LOAD

(pF)

Delay Time (ns)

Tpd+

Tpd-

VS=±5V
VSD=5V
RL=2.2kΩ
VIN=1V Step
VOD=50mV