page_title: Texas Instruments SN76489
hierarchical_section_title: Texas Instruments SN76489
context_page_description: The SN76489 Digital Complex Sound Generator is a TTL-compatible programmable sound generator chip from Texas Instruments. It contains:
  3 square wave tone generators.
  A wide range of frequencies.
  16 different volume levels.
  1 noise generator.
  2 types.
  3 different frequencies.
  16 different volume levels.
  Its main application was the generation of music and sound effects in game consoles, arcade games and home computers, competing with the similar General Instrument AY-3-8910.
context_section_description: The SN76489 Digital Complex Sound Generator (DCSG) is a TTL-compatible programmable sound generator chip from Texas Instruments. It contains:
  3 square wave tone generators.
  A wide range of frequencies.
  16 different volume levels.
  1 noise generator.
  2 types (white noise and periodic).
  3 different frequencies.
  16 different volume levels.
  Its main application was the generation of music and sound effects in game consoles, arcade games and home computers (such as the Texas Instruments TI-99/4A, BBC Micro, ColecoVision, and IBM PCjr), competing with the similar General Instrument AY-3-8910.
caption: Pinout of the standard Texas Instruments SN76489 chip. The packaging is a standard 16-pin DIP.