Product overview
Description
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.
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All 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
- Large output voltage swing
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Part number Status Description Type Supplier Worldwide,Asia,Europe,Africa,North America,South America,Oceania,Afghanistan,Bahrain,Bangladesh,Bhutan,Brunei,Burma (Myanmar),Cambodia,China,East Timor,India,Indonesia,Iraq,Japan,Jordan,Kazakhstan,Kuwait,Kyrgyzstan,Laos,Malaysia,Maldives,Mongolia,Nepal,Oman,Pakistan,Philippines,Qatar,Russian Federation,Saudi Arabia,Singapore,South Korea,Sri Lanka,Taiwan,Tajikistan,Thailand,Turkmenistan,United Arab Emirates,Uzbekistan,Vietnam,Yemen,Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Israel,Italy,Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia,Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom,Vatican City,Algeria,Angola,Benin,Botswana,Burkina,Burundi,Cameroon,Cape Verde,Central African Republic,Chad,Comoros,Democratic Republic of Congo,Djibouti,Egypt,Equatorial Guinea,Eritrea,Ethiopia,Gabon,Gambia,Ghana,Guinea,Guinea-Bissau,Ivory Coast,Kenya,Lesotho,Liberia,Libya,Madagascar,Malawi,Mali,Mauritania,Mauritius,Morocco,Mozambique,Namibia,Niger,Nigeria,Rwanda,Sao Tome and Principe,Senegal,Seychelles,Sierra Leone,Somalia,South Africa,Swaziland,Tanzania,Togo,Tunisia,Uganda,Zambia,Zimbabwe,Antigua and Barbuda,Bahamas,Barbados,Belize,Canada,Costa Rica,Dominica,Dominican Republic,El Salvador,Grenada,Guatemala,Haiti,Honduras,Jamaica,Mexico,Nicaragua,Panama,Saint Kitts and Nevis,Saint Lucia,Saint Vincent and the Grenadines,Trinidad and Tobago,United States,Argentina,Bolivia,Brazil,Chile,Colombia,Ecuador,Guyana,Paraguay,Peru,Suriname,Uruguay,Venezuela,Australia,Fiji,Kiribati,Marshall Islands,Micronesia,Nauru,New Zealand,Palau,Papua New Guinea,Samoa,Solomon Islands,Tonga,Tuvalu,Vanuatu ActiveOperational amplifier and comparator application for smartphones and tablets
Simulators ST ST-OPAMPS-APPDescription:
Operational amplifier and comparator application for smartphones and tablets
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All resources
Resource title | Version | Latest update |
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Product Specifications (1)
Resource title | Version | Latest update | ||
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9.0 | 25 Nov 2014 | 25 Nov 2014 |
Application Notes (1)
Resource title | Version | Latest update | ||
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1.1 | 13 Sep 2018 | 13 Sep 2018 |
Technical Notes & Articles (1)
Resource title | Version | Latest update | ||
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1.0 | 19 Jul 2017 | 19 Jul 2017 |
User Manuals (1)
Resource title | Version | Latest update | ||
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1.0 | 27 Jun 2017 | 27 Jun 2017 |
Design Notes & Tips (1)
Resource title | Version | Latest update | ||
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1.0 | 13 Sep 2018 | 13 Sep 2018 |
Presentations (4)
Resource title | Version | Latest update | ||
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2.2 | 02 Aug 2023 | 02 Aug 2023 | ||
1.0 | 19 Mar 2025 | 19 Mar 2025 | ||
2.0 | 27 Apr 2023 | 27 Apr 2023 | ||
2.0 | 16 May 2023 | 16 May 2023 |
Brochures (4)
Resource title | Version | Latest update | ||
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3.0 | 27 Jul 2022 | 27 Jul 2022 | ||
2.0 | 29 Mar 2024 | 29 Mar 2024 | ||
4.0 | 18 Feb 2025 | 18 Feb 2025 | ||
12.24 | 17 Dec 2024 | 17 Dec 2024 |
EDA Symbols, Footprints and 3D Models
STMicroelectronics - TS321
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
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Symbols

Footprints

3D models
All resources
Resource title | Version | Latest update |
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SPICE models (1)
Resource title | Version | Latest update | ||
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ZIP | 1.0 | 01 Aug 2015 | 01 Aug 2015 |
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Quality and Reliability
Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
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TS321AILT | Active | SOT23-5L | Industrial | Ecopack3 | |
TS321AIYLT | Active | SOT23-5L | Automotive | Ecopack3 | |
TS321ILT | Active | SOT23-5L | Industrial | Ecopack3 | |
TS321IYLT | Active | SOT23-5L | Automotive | Ecopack3 |
Marketing Status
Package
SOT23-5L
Grade
Industrial
RoHS Compliance Grade
Ecopack3
Marketing Status
Package
SOT23-5L
Grade
Automotive
RoHS Compliance Grade
Ecopack3
Marketing Status
Package
SOT23-5L
Grade
Industrial
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 | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | Grade | |||||||||||||||||||||||||||||||||||||||||||||||||||
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min | max | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
TS321ILT | Active | 0.1964 / 1k | Available at 8 distributors Distributor availability of TS321ILT
Distributor reported inventory date: 4/4/2025 | | | | Buy from Distributor | | SOT23-5L | Tape and Reel | CHINA | EAR99 | NEC | -40 | 125 | Industrial | ||||||||||||||||||||||||||||||||||||||||||||||||
TS321AILT | Active | 0.2183 / 1k | Available at 7 distributors Distributor availability of TS321AILT
Distributor reported inventory date: 4/4/2025 | | | | Buy from Distributor | | SOT23-5L | Tape and Reel | CHINA | EAR99 | NEC | -40 | 125 | Industrial | ||||||||||||||||||||||||||||||||||||||||||||||||
TS321IYLT | Active | 0.4 / 1k | Available at 3 distributors Distributor availability of TS321IYLT
Distributor reported inventory date: 4/3/2025 | | | | Buy from Distributor | | SOT23-5L | Tape and Reel | MALAYSIA | EAR99 | NEC | -40 | 125 | Automotive | ||||||||||||||||||||||||||||||||||||||||||||||||
TS321AIYLT | Active | 0.3926 / 1k | Available at 2 distributors Distributor availability of TS321AIYLT
Distributor reported inventory date: 4/3/2025 | | | | Buy from Distributor | | SOT23-5L | Tape and Reel | CHINA | EAR99 | NEC | -40 | 125 | Automotive |
TS321ILT Active
Part Number:
TS321ILT
Operating Temperature (°C)
Min:
-40
Max:
125
Grade:
Industrial
Farnell Element14
Stock
6000Min.Order
1ANGLIA Live
Stock
53680Min.Order
10MOUSER
Stock
46639Min.Order
1FUTURE
Stock
24000Min.Order
0AVNET
Stock
84000Min.Order
0DIGIKEY
Stock
43648Min.Order
1Newark Element14
Stock
432Min.Order
0YOSUN
Stock
2870Min.Order
1Distributor reported inventory date: 4/4/2025
Stock
Min.Order
TS321AILT Active
Part Number:
TS321AILT
Operating Temperature (°C)
Min:
-40
Max:
125
Grade:
Industrial
Farnell Element14
Stock
6228Min.Order
1ANGLIA Live
Stock
71488Min.Order
10MOUSER
Stock
44381Min.Order
1AVNET
Stock
51000Min.Order
0DIGIKEY
Stock
86469Min.Order
1Newark Element14
Stock
4265Min.Order
0YOSUN
Stock
70Min.Order
1Distributor reported inventory date: 4/4/2025
Stock
Min.Order
TS321IYLT Active
Part Number:
TS321IYLT
Operating Temperature (°C)
Min:
-40
Max:
125
Grade:
Automotive
MOUSER
Stock
2328Min.Order
1AVNET
Stock
45000Min.Order
0DIGIKEY
Stock
4957Min.Order
1Distributor reported inventory date: 4/3/2025
Stock
Min.Order
TS321AIYLT Active
Part Number:
TS321AIYLT
Operating Temperature (°C)
Min:
-40
Max:
125
Grade:
Automotive
MOUSER
Stock
7532Min.Order
1DIGIKEY
Stock
7333Min.Order
1Distributor reported inventory date: 4/3/2025
Stock
Min.Order
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors