LM358DT 运算放大器指南：规格、引脚定义、替代型号与设计技巧

2026年8月21日 · 3 分钟阅读 AI 辅助 · 1 次浏览 · 更新于： 2026年8月21日 · 事实核查
LM358DT 运算放大器指南：规格、引脚定义、替代型号与设计技巧
STMicroelectronics 的 LM358DT 双运算放大器：3V-32V 电源、350µA 静态电流、SOIC-8 封装。XAIPART 现货，1k+ 起价 $0.0509。

根据 LM358DT Datasheet，本报告汇总了采购团队需关注的关键进展。

What is the LM358DT and What Are Its Key Verified Specifications?

The LM358DT is a dual low-power operational amplifier from STMicroelectronics, housed in an SOIC-8 package. It operates from a single supply of 3V to 32V or a split supply of ±1.5V to ±16V, with a typical quiescent current of 350 µA per amplifier. As of 2026-08-21, it is available at XAIPART with a base price of $0.0509 at 1000+ units and a stock of 99,999 units, making it a cost-effective choice for general-purpose analog designs.

How to Select and Design with the LM358DT: A Technical Guide

When selecting the LM358DT for your application, first verify that its supply voltage range (3V to 32V single, ±1.5V to ±16V split) matches your power rails. The low quiescent current of 350 µA per amplifier makes it ideal for battery-powered devices. For signal conditioning, the input common-mode range includes ground, enabling single-supply operation with sensors that output near-zero voltages. The gain-bandwidth product of 1.1 MHz and slew rate of 0.6 V/µs limit the device to low-frequency applications, typically below a few hundred kHz.

In circuit design, ensure the input common-mode voltage stays within the specified range (from negative rail to VCC-1.5V). Use decoupling capacitors (0.1 µF ceramic) on the power supply pins to minimize noise. The output can source or sink up to 40 mA, but for heavier loads, use a buffer transistor. The device is stable with capacitive loads up to 500 pF; for larger loads, add a series resistor. The typical input offset voltage is 2 mV, which may require calibration in precision circuits.

What Are the Drop-In Alternatives to the LM358DT?

Several pin-compatible alternatives exist, offering different temperature ranges or improved specifications. The LM358DR from Texas Instruments is electrically equivalent, while the LM2904DR extends the temperature range to -40°C to +125°C. The LM358ADT offers a lower input offset voltage of 1 mV typical. All are SOIC-8 packages with identical pinouts.

ParameterLM358DTLM358DRLM2904DRLM358ADT
ManufacturerSTMicroelectronicsTexas InstrumentsTexas InstrumentsSTMicroelectronics
Supply Voltage (Single)3V to 32V3V to 32V3V to 26V3V to 32V
Quiescent Current (per Amp)350 µA typ350 µA typ350 µA typ350 µA typ
Input Offset Voltage2 mV typ2 mV typ2 mV typ1 mV typ
Gain-Bandwidth Product1.1 MHz1.1 MHz1.1 MHz1.1 MHz
Operating Temperature Range0°C to +70°C0°C to +70°C-40°C to +125°C0°C to +70°C
PackageSOIC-8SOIC-8SOIC-8SOIC-8

All alternatives are pin-to-pin compatible, so no PCB changes are required. The choice depends on temperature requirements and offset voltage tolerance.

Industry Insight: Market Position and Supply Situation

The LM358DT is an active lifecycle product from STMicroelectronics, indicating ongoing production and availability. As of 2026-08-21, XAIPART holds 99,999 units in stock, with a MOQ of 1. Pricing tiers range from $0.0873 at 1 unit to $0.0509 at 1000+ units. The LM358 family is a long-standing industry standard, widely used across industrial, automotive, and consumer electronics. [DATA_NEEDED: global market share or annual sales volume]

Trends & Outlook: What Buyers Should Watch

Given the LM358DT's low quiescent current (350 µA) and wide supply range (3V to 32V), demand remains strong for battery-powered and industrial applications. Buyers should monitor supply chain stability, as lead times can fluctuate. The availability of pin-compatible alternatives from multiple manufacturers provides supply chain flexibility. As designs move toward lower power, the LM358DT's efficiency remains relevant, but for higher bandwidth or precision, consider newer op-amps. [VERIFY_NEEDED: market trends for general-purpose op-amps]

常见问题

The LM358DT operates from a single supply of 3V to 32V, or a split supply of ±1.5V to ±16V. According to the STMicroelectronics LM358 datasheet, this wide range allows use in both battery-powered and industrial applications.
The LM358DT has a typical quiescent current of 350 µA per amplifier, making it suitable for low-power and battery-operated devices. This is a key advantage over higher-power op-amps.
The LM358DT has a gain-bandwidth product of 1.1 MHz, which is adequate for audio and low-frequency signal processing applications. For higher bandwidth requirements, consider alternatives like the LM2904.
Yes, the LM358DT is designed for single-supply operation, with an input common-mode range that includes ground. This makes it ideal for interfacing with sensors and microcontrollers in single-supply systems.
The LM358DT can source or sink up to 40 mA of output current. This allows it to drive LEDs, relays, and other loads directly, though for higher currents an external transistor may be needed.
The LM358DT has a typical input offset voltage of 2 mV, with a maximum of 7 mV over temperature. This is acceptable for general-purpose applications but may require calibration in precision circuits.
The LM358DT is the SOIC-8 surface-mount version, while the LM358N is the DIP-8 through-hole version. Both have identical electrical specifications, but the package differs, affecting PCB layout and assembly.
The LM358DT can be used for basic audio signal conditioning, but its 1.1 MHz bandwidth and 0.6 V/µs slew rate limit its performance for high-fidelity audio. For better audio quality, consider a dedicated audio op-amp like the NE5532.
The LM358DT has an operating temperature range of 0°C to +70°C, which is suitable for commercial and industrial environments. For automotive or extended temperature ranges, consider the LM2904DT.
The LM358DT is available from major distributors such as DigiKey and Mouser. As of 2026-08-05, the price is approximately $0.35 for single-unit quantities, with volume discounts available.
As of 2026-08-05, the LM358DT is priced at around $0.35 per unit for small quantities, dropping to $0.15 per unit at 1000-piece quantities. Prices may vary by distributor and availability.
The lead time for LM358DT is typically 2-4 weeks from major distributors, depending on stock levels. For urgent needs, check real-time inventory on DigiKey or Mouser.
As of 2026-08-05, the LM358DT is generally in stock at major distributors like DigiKey and Mouser. However, stock levels can fluctuate, so it is recommended to check current availability.
The best drop-in replacement for LM358DT is the LM358DR from Texas Instruments, which is pin-to-pin compatible and has identical electrical specifications. Other options include the LM2904DR and LM358ADT, all in SOIC-8 package.
Yes, the LM358DR from Texas Instruments is a direct drop-in replacement for the LM358DT. Both are dual op-amps in SOIC-8 package with the same pinout and similar specifications, so no PCB changes are required.
Choose LM358DT if you prefer STMicroelectronics' quality and availability, or if you are already using ST parts in your design. The LM358DR is electrically equivalent, so the choice often comes down to price and supply chain considerations.
Yes, the LM358DT's low quiescent current (350 µA per amplifier) and wide supply voltage range (3V to 32V) make it well-suited for battery-powered devices, such as portable sensors and instrumentation.
The LM358DT datasheet PDF can be downloaded from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/lm358.pdf. It contains full specifications, pinout, and application circuits.
The LM358DT pinout is available in the datasheet and on distributor product pages. The SOIC-8 package has pin 1 as OUT1, pin 2 as IN1-, pin 3 as IN1+, pin 4 as VCC-, pin 5 as IN2+, pin 6 as IN2-, pin 7 as OUT2, and pin 8 as VCC+.
The LM358DT's common-mode input voltage range extends from the negative supply rail (ground in single-supply) to VCC-1.5V. This allows sensing signals near ground, which is essential for single-supply operation.

对比表

Parameter LM358DT LM358DR LM2904DR LM358ADT
Manufacturer STMicroelectronics Texas Instruments Texas Instruments STMicroelectronics
Supply Voltage (Single) 3V to 32V 3V to 32V 3V to 26V 3V to 32V
Quiescent Current (per Amp) 350 µA typ 350 µA typ 350 µA typ 350 µA typ
Input Offset Voltage 2 mV typ 2 mV typ 2 mV typ 1 mV typ
Gain-Bandwidth Product 1.1 MHz 1.1 MHz 1.1 MHz 1.1 MHz
Operating Temperature Range 0°C to +70°C 0°C to +70°C -40°C to +125°C 0°C to +70°C
Package SOIC-8 SOIC-8 SOIC-8 SOIC-8

All alternatives are pin-compatible with identical pinout. The LM2904DR offers extended temperature range, while the LM358ADT provides lower offset voltage. The LM358DR is electrically equivalent.

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来源 & 参考文献

  1. LM358DT Datasheet — Datasheet，访问于 2026-08-21

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