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.