Overview
The LA3242 is a preamp IC for compact cassette recorder recording-only use. The distinctive feature of the LA3242 is that it contains mechanical switches which have been so far connected externally as peripheral parts.

FEATUREs
• On-chip electronic select switches permitting selection of normal/higher speed recording and metal(chrome)/normal tape recording mode by using the dedicated control pins.
• Two ALC output pins making it easy to make up a Dolby recording system.
• The control voltage from a microcomputer, etc. can be used to turn ON/OFF the ALC and to set the ALC control voltage to the initial value.
• On-chip microphone amplifier making it easy to provide microphone mixing.
• Wide operating voltage range (VCC = 4.5 to 14.0 V).
• Can be used in conjunction with playback-only preamp LA3246 to make up a double-cassette dubbing system.

Functions
• Recording preamplifier ×2
• Microphone amplifier ×1
• ALC output ×2
• Electronic switch ×6