Texas Instruments LM258H

Overview

LM258H from Texas Instruments is a dual, low-power operational amplifier designed for single-supply operation with rail-to-ground input and output capability. It delivers 100 dB DC voltage gain, 1 MHz unity-gain bandwidth, ±1.5 V to ±16 V dual or 3 V to 32 V single supply range, 500 μA supply current, and 2 mV input offset voltage. It enables direct sensing near ground in industrial sensor signal conditioning and 4–20 mA transmitter interfaces.

For engineers reviewing the LM258H datasheet, LM258H pinout, LM258H application, or LM258H equivalent, key selection considerations include its ground-sensing input common-mode range, rail-to-ground output swing on single supply, temperature-compensated unity-gain crossover, low quiescent current for battery-powered systems, and compatibility with logic-level interfacing circuits.

Technical Context

The LM258H integrates two independent, internally frequency-compensated op-amps with PNP differential input stages enabling input common-mode voltage down to ground and output swing to ground-even under single-supply operation. Its bias network maintains stable 500 μA supply current across 3 V to 32 V supply range, and its open-loop gain remains ≥50 V/mV at 15 V supply with RL ≥ 2 kΩ.

It supports true-differential inputs with ±32 V maximum differential input voltage (non-destructive), input clamp diodes protect against negative excursions beyond −0.3 V, and output short-circuit protection limits sink/source current to 40 mA (typ) into ground. The device operates over −25°C to +85°C ambient temperature.

Key Specifications

Pinout & Package

LM258H is packaged in an 8-pin TO-CAN (TO-99) metal can with body size 9.08 mm × 9.09 mm, providing hermetic sealing and thermal robustness for industrial environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM358H and LM2904H, the LM258H provides superior temperature range coverage versus LM358H and higher noise rejection versus LM2904H-making it the preferred choice for industrial-grade dual-op-amp signal conditioning where accuracy and reliability across extended conditions are critical.

Availability

LM258H is available at Aetrix Electronics and suitable for industrial sensor interfaces, 4–20 mA transmitters, and single-supply active filters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LM258H 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 global semiconductor leader delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The LM258H belongs to TI's legacy LMx58-N series of low-power dual op-amps engineered specifically for robust, cost-effective signal conditioning in single-supply industrial control and measurement systems.

FAQ

What is the operating temperature range of the LM258H?

The LM258H is specified for operation from −25°C to +85°C ambient temperature. This extended industrial temperature range distinguishes it from the LM358H (0°C to +70°C) and makes it suitable for deployment in uncontrolled environments such as factory floors, outdoor enclosures, and motor control cabinets where thermal extremes occur.

Does the LM258H support true rail-to-rail input and output?

The LM258H supports rail-to-ground input (common-mode range includes 0 V) and rail-to-ground output (output swings to within 20 mV of ground), but not rail-to-rail on the positive side-it typically saturates 2–3 V below V+. This architecture enables ground-referenced sensing and single-supply simplicity while maintaining robust PNP input stage performance.

Can the LM258H be used with a 3.3-V supply?

Yes, the LM258H operates reliably from 3 V to 32 V single supply. At 3.3 V, it maintains functional gain, input common-mode range down to 0 V, and output swing within ~30 mV of ground-making it compatible with modern 3.3-V microcontrollers and ADCs in compact sensor nodes and portable instrumentation.

What is the maximum differential input voltage the LM258H can withstand?

The LM258H tolerates differential input voltages up to ±32 V without damage, exceeding its supply rails. This eliminates the need for external input protection diodes in most applications. However, absolute input voltages must remain within −0.3 V to V+ + 0.3 V to avoid forward-biasing internal junctions and causing excessive input current.

How does the LM258H compare to the LM2904 in terms of noise rejection?

The LM258H offers minimum 70 dB common-mode rejection ratio (CMRR) and 65 dB power supply rejection ratio (PSRR), whereas the LM2904 specifies only 50 dB CMRR and 50 dB PSRR. This 20 dB advantage enables the LM258H to maintain signal integrity in electrically noisy industrial settings with fluctuating grounds and shared power distribution networks.