Overview
The LC7385, 7385M CMOS DTMF Receiver ICs integrate bandsplit filter and digital decoder functions for the 16 DTMF digits used in touch-tone telephone systems.

Features
• Single +5V power supply.
• Decodes all 16 DTMF digits.
• Built-in differential input amplifier.
• On-chip filters, including
· Dial tone filter.
· High-group filter.
· Low-group filter.
• User-selectable acquisition and release times.
• Pin-selectable 4-bit hexadecimal or binary-coded 2-of-8 output.
• 3-state data outputs facilitate microcontroller or other peripheral interfaces.
• Standby mode.
• Low-power double-poly CMOS process.
• LC7385 : 18-pin DIP package.
LC7385M : 18-pin MFP package.