Product Overview
LM386N-1 Low-Voltage Audio Power Amplifier IC 8-Pin DIP
Condition
Unused new old stock in vintage retail packaging. Marked on IC body: National Semiconductor logo, LM 386N-1. Packaging card marked with RadioShack catalog number 276-1731. Sold each.
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Product Overview
RadioShack catalog number 276-1731 supplies an LM386N-1 low-voltage audio power amplifier integrated circuit in a standard 8-pin dual in-line package (DIP-8). Designed primarily for battery-powered audio applications, the device features a wide 4V to 12V operating supply range and low quiescent current draw. An internal gain setting of 20 can be increased up to 200 by placing an external resistor and capacitor between pins 1 and 8.
Key Features
- 8-pin dual in-line package (DIP-8) through-hole mount
- Supply voltage range of 4V to 12V DC (15V absolute maximum)
- Nominal output power rated at 400 mW
- Low quiescent current drain of 2 mA typical
- Total harmonic distortion of 0.2% typical (Vs = 6V, RL = 8 ohms, Pout = 125 mW, f = 1 kHz)
- Maximum power dissipation of 660 mW
- Card back includes complete pinout diagram and electrical ratings
Applications
- Breadboarding low-power audio stages for DIY intercoms, small signal tracers, and crystal radio receivers
- Servicing legacy hobbyist electronic kits, small bench amplifiers, and handheld battery monitors
- Building dedicated analog distortion pedals or practice amplifiers for guitar workbenches
Frequently Asked Questions
What supply voltage range is suitable for this audio amplifier?
The package specifications indicate an operating supply voltage range of 4V to 12V DC, with an absolute maximum rating of 15V.
What is the pin configuration for the 8-pin DIP housing?
Pin 1 and pin 8 provide gain control, pin 2 is the inverting input, pin 3 is the non-inverting input, pin 4 is ground, pin 5 is the audio output, pin 6 is supply voltage (Vs), and pin 7 is the bypass connection.
Can this part be used directly in standard breadboards and 8-pin IC sockets?
Yes. The 8-pin dual in-line package uses standard 0.1-inch lead spacing, fitting breadboards, perfboards, and DIP-8 sockets directly.
The LM386 has spent decades giving small bench speakers their very first voice. Plug it in, set the gain, and let the circuit speak for itself.
