TCA3388-DP

Overview

The Motorola TCA3388-DP is a telephone line interface integrated circuit housed in a 20-pin DIP package. It performs basic telephone set functions when combined with a microcontroller and ringer, featuring DC and AC line termination, hybrid functionality with adjustable sidetone networks, and handset connections. The device includes an efficient supply point for peripherals and hook status detection. Key operational features encompass transmit and receive amplifiers, double anti-sidetone networks, line length automatic gain control, and microphone/earpiece mute capabilities.

Feature Summary

• Integrates DC and AC telephone line termination with selectable DC mask options for France, U.K., and low voltage standards.
• Provides hybrid function with two adjustable sidetone networks and line length AGC for signal integrity.
• Includes interrupter driver for pulse-dialing with reduced current consumption during dialing operations.
• Features DTMF interfacing and ringing via external ringer support.

Applications

• Corded telephony systems
• Cordless telephony base stations
• Answering machines
• Fax machines
• Intercom systems

Part Context

The TCA3388 series serves as a specialized interface system within Motorola's telecommunications component lineup. The -DP suffix denotes the specific 20-pin dual in-line package variant designed for through-hole mounting. This component bridges analog telephone lines with digital control logic, enabling complete telephone set functionality without requiring extensive discrete circuitry for line interface tasks.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should verify pin compatibility and electrical specifications against alternative telephone line interface ICs from other manufacturers if sourcing constraints require substitution.