Overview
The SANYO LA8515N telephonic speech network provides amplification, switching and line drive functions for telephone equipment. It can perform 2 to 4 line conversion and impedance matching, and supports both DTMF and keytone signals.
The LA8515N’s low operating current reduces line load. Switching between the DTMF/keytone and voice circuits is controlled directly from a single MUTE input. The LA8515N is available in plastic 20-pin DIPs.

FEATUREs
• Direct connection to low-impedance receiver.
• DTMF/keytone and voice circuit switching controlled by a single MUTE input.
• Receive and transmit gain are adjusted automatically in response to the line current.
• Applicable to a wide variety of transmitters and receivers by selecting external components.