AS393/393A

Document number: DS40539 Rev. 3 - 2

1 of 14

www.diodes.com

September 2018

© Diodes Incorporated

AS393/393A

LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS

Description

The AS393/393A consist of two independent precision voltage

comparators with a typical offset voltage of 1.0mV and high gain.

They are specifically designed to operate from a single power supply

over wide range of voltages. Operation from split power supply is also

possible and the low power supply current drain is independent of the

magnitude of the power supply voltage.

The AS393/393A series are compatible with industry standard 393.

AS393A has more stringent input offset voltage than AS393.

The AS393 is available in standard PDIP-8, SO-8, TSSOP-8 and

MSOP-8 packages, AS393A is available in standard PDIP-8 and SO-

8 packages.

Features



Wide Supply Voltage Range



Single Supply: 2V to 36V



Dual Supplies: ±1.0V to ±18V



Low Supply Current Drain: 0.6mA



Low Input Bias Current: 25nA (Typical)



Low Input Offset Current: ±5.0nA (Typical)



Low Input Offset Voltage: 1.0mV (Typical)



Input Common Mode Voltage Range Includes Ground



Differential Input Voltage Range Equals to the Power Supply

Voltage



Low Output Saturation Voltage: 200mV at 4mA



Open Collector Output



Lead-Free Packages: SO-8, TSSOP-8, PDIP-8



Totally Lead-Free; RoHS Compliant (Notes 1 & 2)



Lead-

Free Packages, Available in “Green” Molding Compound:

SO-8, TSSOP-8, MSOP-8



Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)



Halogen and Antimony Free. “Green” Device (Note 3)

Pin Assignments

(Top View)

1

2

3

4

8

7

6

5

OUTPUT1

INPUT1-

INPUT1+

OUTPUT2

INPUT2-

INPUT2+

VCC

GND

SO-8/TSSOP-8/MSOP-8

(Top View)

1

2

3

4

8

7

6

5

OUTPUT1

INPUT1-

INPUT1+

OUTPUT2

INPUT2-

INPUT2+

VCC

GND

PDIP-8

Applications



Battery Charger



Cordless Telephone



Switching Power Supply



DC-DC Module



PC Motherboard



Communication Equipment

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.

2. See https://www.diodes.com/quality/lead-

free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and

Lead-free.

3. Halogen- and Antimony-

free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

Typical Applications Circuit

Basic Comparator

Driving CMOS

+VIN

+VREF

1/2 AS393/A

VCC

3K

VO

+

-

100K

5V

+

-

4

8

1/2 AS393/A

+VIN

+VREF

VO