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Texas Instruments LM324M — Analog & Data Acquisition

LM324M LinCMOS Quad Op-Amp, 1 MHz, 14-SOIC, Obsolete

MPNLM324M
Obsolete

Texas Instruments LM324M, LinCMOS™ series, quad general-purpose op-amp, 1 MHz gain bandwidth, 1.5 mA supply current, 3 V to 32 V supply range, 14-SOIC package, 0°C to 70°C operating temperature.

$2.4400Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM324M specifications
ParameterValue
SeriesLinCMOS™
MountingSurface Mount
Amplifier typeGeneral Purpose
Voltage - input offset2 mV
Voltage - supply span32 V
Current - supply1.5mA
Current - input bias45 nA
Current - output (Channel)40 mA
Operating temperature0°C~70°C(TJ)
Gain bandwidth product1 MHz
PackageTube
Case14-SOIC (0.154\", 3.90mm Width)
Number of circuits4

Product details

Quad op-amp in 14-SOIC — commercial temperature, obsolete status

It integrates four independent amplifiers with a 1 MHz gain bandwidth product and draws 1.5 mA total supply current, making it a fit for multi-channel signal conditioning in temperature-controlled indoor equipment such as bench instruments, appliance control boards, and office automation.

Supply range and input characteristics

The LM324M operates from a single supply spanning 3 V to 32 V, or dual supplies up to ±16 V, which lets it interface directly with 5 V logic rails and 24 V industrial sensors without an intermediate regulator. Input bias current is 45 nA typical, and input offset voltage is 2 mV typical — adequate for non-critical DC-coupled stages like level shifting, active filters below 100 kHz, and transducer amplification where precision below 1 mV is not required.

Frequently asked questions

What is the replacement for the LM324M?

No official replacement order code is recorded for the LM324M. The LM324 family includes many variants (e.g., LM324N in DIP, LM324DR in SOIC) with similar electrical specs but different package codes. Verify pin-compatibility and temperature grade against your BOM before substituting.

What is the difference between the LM324M and the LM324N?

The LM324M is the surface-mount 14-SOIC variant, while the LM324N is the through-hole 14-DIP variant. Electrical specifications (1 MHz GBW, 1.5 mA supply, 3-32 V range) are identical across the family. The package difference drives the PCB footprint and assembly process.

Is the LM324M RoHS compliant?

The evidence does not specify RoHS compliance status for this order code. Confirm with the supplier at quote time, as obsolete parts may have been manufactured before RoHS transition dates.