ELANT EL5486CS, EL5486CU-T13, EL5486CU, EL5486CS-T7, EL5486CS-T13 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.

EL5485C, EL5486C - Preliminary

General Description

The EL5485C and EL5486C 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 EL5485C and EL5486C can be used to hold the
comparator output value by applying a low logic level to the pin.

The EL5485C is available in the 16-pin SO package and the EL5486C
in the 24-pin QSOP package. Both are specified for operation over the
full -40°C to +85°C temperature range. Also available are single
(EL5185C), dual (EL5285C), and window comparator (EL5287C)
versions.

Pin Configurations

1

2

3

4

16

15

14

13

5

6

7

12

11

10

8 9

EL5485CS

(16-Pin SO)

1

2

3

4

16

15

14

13

5

6

7

12

11

9

8

10

20

19

18

17

24

23

22

21

EL5486CU

(24-Pin QSOP)

- +-+

- +-+

INA-

INA+

GND

OUTA

OUTB

VS-

INB+

INB-

IND-

IND+

VS+

OUTD

OUTC

VSD

INC+

INC-

- +-+

- +-+

LATCHA

OUTA

OUTB

LATCHB

VS-

NC

INB+

INB-

LATCHD

OUTD

OUTC

LATCHC

VSD

NC

INC+

INC-

INA-

INA+

NC

GND

IND-

IND+

NC

VS+

Features

• 4ns typ. propagation delay

• 5V to 12V input supply

• +2.7V to +5V output supply

• True-to-ground input

• Rail-to-rail outputs

• Separate analog and digital
supplies

• Active low latch

• Single (EL5185C) available

• Dual (EL5285C) available

• Window available (EL5287C)

• Pin-compatible 8ns family
available (EL5x81C, EL5283C &
EL5482C)

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 #

EL5485CS 16-Pin SO - MDP0027
EL5485CS-T7 16-Pin SO 7” MDP0027
EL5485CS-T13 16-Pin SO 13” MDP0027
EL5486CU 24-Pin QSOP - MDP0040
EL5486CU-T13 24-Pin QSOP 13” MDP0040

EL5485C, EL5486C - Preliminary

Quad 4ns High Speed Comparators

September 7, 2001

2

EL5485C, EL5486C - Preliminary

Quad 4ns High Speed Comparators

EL5485C, EL5486C - Preliminary

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 TBDmW
ESD Voltage 2kV

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 -10 -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 -5V < V

CM

< +2.75V, VO = 2.5V -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

> 2 50mV GND + 0.25 GND + 0.5 V

Dynamic Performance

tpd+ Latch Disable to High Delay VIN = 1V

P-P

, VOD = 50mV 4 6 ns

tpd- Latch Disable to Low Delay VIN = 1V

P-P

, VOD = 50mV 4 6 ns

Supply

IS+ Positive Analog Supply Current (per comparator) 12 13 mA
IS- Negative Analog Supply Current (per comparator) 7.5 8.5 mA
I

SD

Digital Supply Current (per comparator) All inputs high 5.5 6.5 mA

(per comparator) All inputs low 0.9 1.2 mA

PSRR Power Supply Rejection Ratio -60 -80 dB

Latch

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+ Positive Going Delay Time V

OD

= 5mV, CL = 15pF, IO = 2mA 4 ns

td- Negative Going Delay Time V

OD

= 5mV, CL = 15pF, IO = 2mA 4 ns

t

s

Minimum Setup Time 2 ns

t

h

Minimum Hold Time 1 ns

tpw(D) Minimum Latch Disable Pulse Width 5 ns

3

EL5485C, EL5486C - Preliminary

Quad 4ns High Speed Comparators

EL5485C, EL5486C - Preliminary

Typical Performance Curves

Supply Current vs Supply Voltage
(per comparator)

0 1 2 3 4 5 6

10

8

6

4

2

0

±VS (V)

I

S

(mA)

IS+

IS-

VIN=50mV
RL=2.2k

Offset Voltage vs Temperature

-50 -30 10 30 50 70 90

3

2.5

1.5

1

0.5

0

Temperature (°C)

V

OS

(mV)

2

-10

Output High Voltage vs Temperature

-50 -30 10 30 50 70 90

4.832

4.83

4.826

4.822

4.82

4.818

Temperature (°C)

V

OH

(V)

4.828

4.824

-10

Input Bias Current vs Temperature

-50 -30 30 50 90

8
7

3
2
1
0

Temperature (°C)

IB (µA)

5

-10 10 70

6

4

Propagation Delay vs Overdrive
VIN=5V

STEP

0.2 0.6 1 1.4 1.8 2.2 2.6

7.8

7.4

7

6.8

6.6

6.4

VOD (V)

Delay Time (ns)

Propagation Delay vs Source Resistance
VIN=1V

STEP

0 1.6 2

15

5

Source Resistance (kΩ)

Delay Time (ns)

13

7.6

7.2

TPD-

TPD+

VS=±5V
VSD=5V
RL=2.2k

0.4 1.20.8

11

7

9

VS=±5V
VSD=5V
VOD=50mV
RL=2.2k

TPD-

TPD+

4

EL5485C, EL5486C - Preliminary

Quad 4ns High Speed Comparators

EL5485C, EL5486C - Preliminary

Typical Performance Curves

Propagation Delay vs Supply Voltage

4 4.2 4.8 5.2 5.4 5.6 6

6.8

6.6

6.2

6

5.8

5.6

±VS (V)

Delay Time (ns)

6.4

4.4

Digital Supply Current vs Switching Frequency
(per comparator)

0 20 40 50

25

20

10

0

Frequency (MHz)

I

SD

(mA)

15

10

5

30

TPD-

TPD+

VSD=VS+
VOD=50mV
RL=2.2k

54.6 5.8

VS=±5V
TA=25°C

VSD=5V

VSD=3V

Output Low Voltage vs Temperature

-50 -30 10 30 50 70 90

0.285

0.235

Temperature (°C)

V

OL

(V)

-10

0.275

0.255

0.245

0.265

Supply Current vs Temperature
(per comparator)

-50 10 70 90

12

11

8

6

Temperature (°C)

Supply Current (mA)

-30

7

50

10

9

30-10

IS+

IS-

Propagation Delay vs Overdrive
VIN=1V

STEP

50 100 250 300 400 500 600

6.1

6

5.8

5.5

5.2

VOD (mV)

Delay Time (ns)

5.9

5.7

150

5.6

5.4

5.3

350 450 550200

TPD-

TPD+

VS=±5V
VSD=5V
RL=2.2k

Propagation Delay vs Overdrive
VIN=3V

STEP

0.2 0.6 0.8 1.2 1.6 2

8

6.5

5

VOD (mV)

Delay Time (ns)

7.5

7

6

5.5

1 1.4 1.80.4

TPD-

TPD+

VS=±5V
VSD=5V
RL=2.2k