Texas Instruments LM358PW

Overview

LM358PW from Texas Instruments is a dual general-purpose operational amplifier in TSSOP-8 package, featuring rail-to-rail input (common-mode range includes ground), 1.2MHz unity-gain bandwidth, 300µA per amplifier quiescent current, and ±3mV max input offset voltage at 25°C - enabling precision low-power signal conditioning in single-supply industrial sensor interfaces.

For engineers reviewing the LM358PW datasheet, LM358PW pinout, LM358PW application, or LM358PW equivalent, this page delivers verified electrical specs, validated pin functions, real-world use cases in power supplies and motor control, and two confirmed alternative parts with documented parameter and temperature-range differences.

Technical Context

The LM358PW belongs to the LM358B family and implements two independent high-voltage (3–36V) op-amps with internal RF/EMI filtering, unity-gain stable architecture, and input stage designed for direct ground-referenced sensing. Its differential input voltage rating of ±32V supports robust operation in noisy environments.

It operates across –40°C to +85°C ambient temperature, supports common-mode input down to V–, and delivers 0.5V/µs slew rate with 70–140 V/mV open-loop gain - making it suitable for DC-coupled amplification, active filtering, and comparator applications without external hysteresis.

Key Specifications

Pinout & Package

TSSOP-8 (PW) package: 3mm × 6.4mm body, 0.65mm pitch, surface-mount, moisture-sensitive level 1 (MSL-1), RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual operational amplifier applications.

Compared with LM358P and LM2904DR, the LM358PW offers superior EMI immunity and bandwidth in a compact TSSOP package - making it optimal for space-constrained, noise-prone industrial power and motor control designs where ground-referenced sensing is essential.

Availability

LM358PW is available at Aetrix Electronics and suitable for merchant network power supplies, multi-function printers, and motor control systems requiring stable component supply across long production lifecycles.

Supply support for LM358PW includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a U.S.-based semiconductor company specializing in analog and embedded processing technologies, with leadership in precision amplifiers, power management, and signal chain solutions.

The LM358PW belongs to TI's industry-standard dual op-amp product line, engineered for cost-sensitive industrial, consumer, and computing applications demanding reliability, wide supply range, and ease of design-in.

FAQ

What is the maximum supply voltage for LM358PW?

The LM358PW supports a maximum supply voltage of 36V (V+ − V−), with absolute maximum ratings specifying ±20V differential supply or 40V total. Operation at 36V is fully characterized across –40°C to +85°C, enabling direct use in 24V and 32V industrial systems without external regulators. Exceeding 36V risks permanent damage per TI's Absolute Maximum Ratings table.

Does LM358PW support rail-to-rail output swing?

No, the LM358PW does not provide rail-to-rail output swing. Its output can swing to within ~1.4V of V+ and ~100mV of V− under light load (50µA). At 1mA load, negative swing degrades to ~0.75V above V−. This limitation is inherent to its bipolar input/output stage and must be accounted for in single-supply designs - e.g., by biasing sensor signals mid-rail or using external pull-down networks.

Can LM358PW drive capacitive loads?

Yes, the LM358PW is characterized to drive up to 100pF capacitive loads without oscillation, per TI's Electrical Characteristics table. For loads exceeding 100pF (e.g., long cables or ADC input capacitance), a series resistor (10–100Ω) between the output and load is recommended to maintain phase margin. The device's 56° phase margin at unity gain ensures stability with proper layout and decoupling.

Is LM358PW pin-compatible with older LM358 variants?

Yes, the LM358PW is pin-compatible with all standard 8-pin dual op-amp packages including SOIC-8 (LM358P), TSSOP-8 (LM358PW), and VSSOP-8 (LM358DGK). Pin numbering and functions match the industry-standard configuration: OUT1, IN1−, IN1+, V−, IN2+, IN2−, OUT2, V+. No PCB redesign is needed when upgrading from LM358P to LM358PW - only reflow profile adjustment for TSSOP geometry.

What is the input bias current specification for LM358PW?

The LM358PW exhibits a typical input bias current of –10nA and a maximum of –35nA at 25°C, with –50nA maximum across –40°C to +85°C. This low bias current minimizes voltage errors in high-impedance sensor networks (e.g., pH electrodes or photodiode transimpedance stages), especially when combined with its 4GΩ common-mode input impedance - reducing loading effects on passive dividers or RC filters.