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  • The TS321 device is intended for cost-sensitive applications where space-saving is of great importance. This bipolar operational amplifier (op amp) offers the benefits of a reduced component size (SOT23-5 package) with specifications that match (or are better than) industry standard devices (such as the popular LM358A, LM324, and other similar devices). The TS321 device has an input common mode range (Vicm) that includes ground and therefore can be employed in single supply applications.

    Key Features

    • Large output voltage swing
      • 0 to 3.5 V min (VCC = 5 V)
    • Low supply current: 500 µA
    • Low input bias current: 20 nA
    • Low input offset voltage
      • 2 mV max. for TS321A
      • 4 mV max. for TS321
    • Wide power supply range
      • Single supply: 3 to 30 V
      • Dual supplies: ±1.5 to ±15 V
    • Stable with high capacitive loads

Development Tools

    • Part Number

      Operational amplifier and comparator application for smartphones and tablets

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS1540
      Low-power single operational amplifier
      9.0
      396.95 KB
      PDF
      DS1540

      Low-power single operational amplifier

    • Description Version Size Action
      AN3410
      A 93% efficient LED driver solution for the US market
      1.1
      1.91 MB
      PDF
      AN3410

      A 93% efficient LED driver solution for the US market

    • Description Version Size Action
      How to Extend the Performance of a Low Voltage Precision Op Amp to a High Voltage High Side Current Sensing Application 1.0
      473.64 KB
      PDF

      How to Extend the Performance of a Low Voltage Precision Op Amp to a High Voltage High Side Current Sensing Application

    • Description Version Size Action
      UM0065
      MACROMODELS USER MANUAL FOR STANDARD LINEAR PRODUCTS
      1.0
      120.84 KB
      PDF
      UM0065

      MACROMODELS USER MANUAL FOR STANDARD LINEAR PRODUCTS

    • Description Version Size Action
      DT0073
      Optical heart rate monitoring – OHRM based on X-NUCLEO-IKA01A1 expansion board
      1.0
      1.11 MB
      PDF
      DT0073

      Optical heart rate monitoring – OHRM based on X-NUCLEO-IKA01A1 expansion board

HW Model, CAD Libraries & SVD

    • Description Version Size Action
      ST library for all op amps and comparators SPICE models 4.0
      51.6 KB
      ZIP
      TS321 Pspice model 1.0
      1.14 KB
      ZIP

      ST library for all op amps and comparators SPICE models

      TS321 Pspice model

Presentations & Training Material

    • Description Version Size Action
      Health and Wellness Mobility Cloud computing
      1.32 MB
      PDF
      ST Analog Products for Automotive applications 11.2017
      2.05 MB
      PDF
      ST offering in Wearable - Analog and Mixed Signal Portfolio 3.0
      1.47 MB
      PDF
      What does precision mean for an op amp?
      1.15 MB
      PDF

      Health and Wellness Mobility Cloud computing

      ST Analog Products for Automotive applications

      ST offering in Wearable - Analog and Mixed Signal Portfolio

      What does precision mean for an op amp?

Publications and Collaterals

    • Description Version Size Action
      ST Analog cards High-performance operational amplifiers and comparators, the best choice for longevity, robustness and performance. 1.0
      818.4 KB
      PDF

      ST Analog cards High-performance operational amplifiers and comparators, the best choice for longevity, robustness and performance.

    • Description Version Size Action
      Amplifiers & Comparators - Broaden Your Horizons 1.0
      2.55 MB
      PDF
      Operational Amplifiers (Op Amps) - Quick Reference Guide 2.0
      2.76 MB
      PDF
      Products and solutions for Smart industry 3.0
      2.99 MB
      PDF

      Amplifiers & Comparators - Broaden Your Horizons

      Operational Amplifiers (Op Amps) - Quick Reference Guide

      Products and solutions for Smart industry

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
TS321AILT
Active
SOT23-5L Industrial Ecopack3
TS321AIYLT
Active
SOT23-5L Automotive Ecopack3
TS321ILT
Active
SOT23-5L Industrial Ecopack3
TS321IYLT
Active
SOT23-5L Automotive Ecopack3

TS321AILT

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack3

TS321AIYLT

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Automotive

RoHS Compliance Grade

Ecopack3

TS321ILT

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Industrial

RoHS Compliance Grade

Ecopack3

TS321IYLT

Package:

SOT23-5L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-5L

Grade

Automotive

RoHS Compliance Grade

Ecopack3

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
TS321ILT Available at 11 distributors

Distributor availability ofTS321ILT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 20791 1 Order Now
COMPEL EUROPE 7013 1 Order Now
RS COMPONENTS EUROPE 4050 10 Order Now
AVNET AMERICA 423000 0 Order Now
FUTURE WORLDWIDE 11921 1 Order Now
ARROW EUROPE 723000 0 Order Now
Newark Element14 AMERICA 522 0 Order Now
ARROW AMERICA 30000 3000 Order Now
MOUSER WORLDWIDE 13144 1 Order Now
Farnell Element14 EUROPE 1425 1 Order Now
ANGLIA Live EUROPE 9030 10 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

20791

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

7013

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

4050

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

423000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

11921

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

723000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

522

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

30000

Min.Order

3000

Region

AMERICA Order Now

MOUSER

Stock

13144

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1425

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

9030

Min.Order

10

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-18

Buy now
Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 CHINA 0.27 / 1k
TS321AILT Available at 9 distributors

Distributor availability ofTS321AILT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 23245 1 Order Now
RS COMPONENTS EUROPE 9180 10 Order Now
AVNET AMERICA 6000 0 Order Now
ARROW EUROPE 756000 0 Order Now
Newark Element14 AMERICA 3223 0 Order Now
ARROW AMERICA 12000 3000 Order Now
MOUSER WORLDWIDE 13350 1 Order Now
Farnell Element14 EUROPE 9911 1 Order Now
ANGLIA Live EUROPE 20500 10 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

23245

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

9180

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

6000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

756000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

3223

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

12000

Min.Order

3000

Region

AMERICA Order Now

MOUSER

Stock

13350

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

9911

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

20500

Min.Order

10

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-18

Buy now
Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 CHINA 0.29 / 1k
TS321IYLT Available at 3 distributors

Distributor availability ofTS321IYLT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2900 1 Order Now
AVNET AMERICA 9000 0 Order Now
MOUSER WORLDWIDE 5799 1 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

2900

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

9000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5799

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-18

Sample & Buy Buy now
Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 MALAYSIA 0.32 / 1k
TS321AIYLT Available at 1 distributors

Distributor availability ofTS321AIYLT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3000 1 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

3000

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-18

Sample & Buy Buy now
Active
EAR99 NEC Tape And Reel SOT23-5L -40 125 MALAYSIA 0.35 / 1k

TS321ILT

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.27 / 1k

Distributor availability ofTS321ILT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 20791 1 Order Now
COMPEL EUROPE 7013 1 Order Now
RS COMPONENTS EUROPE 4050 10 Order Now
AVNET AMERICA 423000 0 Order Now
FUTURE WORLDWIDE 11921 1 Order Now
ARROW EUROPE 723000 0 Order Now
Newark Element14 AMERICA 522 0 Order Now
ARROW AMERICA 30000 3000 Order Now
MOUSER WORLDWIDE 13144 1 Order Now
Farnell Element14 EUROPE 1425 1 Order Now
ANGLIA Live EUROPE 9030 10 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

20791

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

7013

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

4050

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

423000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

11921

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

723000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

522

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

30000

Min.Order

3000

Region

AMERICA Order Now

MOUSER

Stock

13144

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1425

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

9030

Min.Order

10

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-18

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23-5L

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.27 / 1k

Country of Origin

CHINA

TS321AILT

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.29 / 1k

Distributor availability ofTS321AILT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 23245 1 Order Now
RS COMPONENTS EUROPE 9180 10 Order Now
AVNET AMERICA 6000 0 Order Now
ARROW EUROPE 756000 0 Order Now
Newark Element14 AMERICA 3223 0 Order Now
ARROW AMERICA 12000 3000 Order Now
MOUSER WORLDWIDE 13350 1 Order Now
Farnell Element14 EUROPE 9911 1 Order Now
ANGLIA Live EUROPE 20500 10 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

23245

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

9180

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

6000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

756000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

3223

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

12000

Min.Order

3000

Region

AMERICA Order Now

MOUSER

Stock

13350

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

9911

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

20500

Min.Order

10

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-18

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23-5L

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.29 / 1k

Country of Origin

CHINA

TS321IYLT

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.32 / 1k

Distributor availability ofTS321IYLT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2900 1 Order Now
AVNET AMERICA 9000 0 Order Now
MOUSER WORLDWIDE 5799 1 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

2900

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

9000

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5799

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-18

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23-5L

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.32 / 1k

Country of Origin

MALAYSIA

TS321AIYLT

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.35 / 1k

Distributor availability ofTS321AIYLT

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3000 1 Order Now

Distributor reported inventory date: 2020-09-18

Distributor Name

DIGIKEY

Stock

3000

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-09-18

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SOT23-5L

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

0.35 / 1k

Country of Origin

MALAYSIA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors