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LM358 Pinout

LM358 · DIP-8 / SOIC-8

The LM358 is a dual op-amp in an 8-pin package: two independent amplifiers sharing one pair of supply pins. It is the usual choice for single-supply circuits because its inputs work all the way down to ground.

Checked against the KiCad library and datasheet on

LM358 pinout: KiCad footprint Package_DIP:DIP-8_W7.62mm seen from the top, beside the KiCad library symbol Amplifier_Operational:LM358 with every pin number and name
KiCad draws the LM358 as three units: amplifier A on pins 1 to 3, amplifier B on pins 5 to 7, and the power unit (V+ on 8, V− on 4). The footprint is the standard DIP-8, pin 1 beside the notch. Exported from the KiCad 9 libraries (Amplifier_Operational:LM358, Package_DIP:DIP-8_W7.62mm). Open full size

Pin by pin

PinNameFunction
1OUT AOutput of amplifier A
2IN A−Inverting input of amplifier A
3IN A+Non-inverting input of amplifier A
4GND / V−Ground on a single supply, the negative rail on a split supply
5IN B+Non-inverting input of amplifier B
6IN B−Inverting input of amplifier B
7OUT BOutput of amplifier B
8V+Supply: 3 V to 32 V single, or ±1.5 V to ±16 V split

Things that catch people out

  • The inputs work from ground up to about 1.5 V below V+. A signal closer to V+ than that is outside the input range and the output stops following it.
  • The output is not rail-to-rail either: with a load it tops out roughly 1.5 to 2 V below V+.
  • With an AC-coupled load, TI recommends a resistor from the output to ground: it biases the output stage and prevents crossover distortion. DC-coupled loads do not need it.
  • An unused half still needs wiring. Connect it as a follower (output to its inverting input) with the non-inverting input at a voltage inside the input range; do not leave its inputs floating.

Putting the LM358 on a PCB

  • One 100 nF capacitor from pin 8 to pin 4, at the package, serves both amplifiers.
  • Pin 4 is ground on a single supply but the negative rail on a split supply. Check which your schematic means before the ground pour reaches it.
  • Place each amplifier's feedback parts next to its own pins (2 for A, 6 for B) so the two inverting nodes stay short and apart.

Common questions

Which other op-amps share the LM358 pinout?
Most 8-pin dual op-amps use the same industry-standard pinout: LM2904, TL072, NE5532, MCP6002 and LM1458 among them. Same pins does not mean drop-in: a TL072's inputs do not work near its negative rail, and an MCP6002 is limited to 6 V supplies, so check the supply and input range for your circuit.
Can the LM358 work from a single 5 V supply?
Yes, that is what it is designed for. Inputs work from 0 V to about 3.5 V on a 5 V supply, and the output swings from near 0 V to roughly 3.5 V.
What is the difference between the LM358 and LM324?
The same amplifier, two per package in the LM358 and four in the 14-pin LM324. The pin numbers differ: on the LM324, V+ is pin 4 and GND is pin 11.

Building a single-supply amplifier or comparator around the LM358? Describe it, say a microphone preamp with a gain of 50 on 5 V, and get the schematic and a routed board.

Design an LM358 board →

Sources

Other pinouts