MT88L70AS1

The MT88L70AS1 is a specific model of a voice-band modem integrated circuit (IC) manufactured by Zarlink Semiconductor (now part of Microchip Technology). Voice-band modems are used to transmit and receive analog voice signals over telecommunication lines, allowing for communication between devices over traditional phone lines.

Here are some key features and specifications of the MT88L70AS1:

1. Modulation: The MT88L70AS1 supports various modulation techniques for voice and data transmission, such as Bell 202, Bell 212A, V.21, V.23, V.22, and V.22bis.

2. Data Rate: The IC supports different data rates, depending on the modulation scheme used. The specific data rates can vary based on the selected modulation standard.

3. Interfaces: The MT88L70AS1 features various interfaces for connection to telecommunication lines and host systems, including analog and digital interfaces.

4. Dialing and Control Features: The IC includes features such as dial tone detection, call progress monitoring, and control signals for call initiation and termination.

5. DTMF Generation and Detection: The MT88L70AS1 can generate and detect dual-tone multi-frequency (DTMF) signals, which are commonly used for telephone keypads and signaling.

6. Package Type: The "S1" in the part number indicates the package type. The specific package type can vary depending on the manufacturer's specifications.

The MT88L70AS1 voice-band modem IC is commonly used in various applications where analog voice communication and data transmission over telecommunication lines are required, such as fax machines, modems, and telephony systems.

For detailed information about the MT88L70AS1 voice-band modem IC, including its pin configuration, electrical characteristics, and application guidelines, I recommend referring to the datasheet provided by Microchip Technology or contacting the manufacturer directly.