M-8888-01P

Telecom Overview

The M-8888-01P is a DTMF transceiver manufactured by IXYS Integrated Circuits Division, housed in a 20-pin plastic DIP package. It operates on a single +5 V power supply with a voltage range of 4.75 V to 5.25 V and consumes approximately 10 mA of operating current. The device supports a 2 MHz microprocessor port and utilizes an inexpensive 3.5795 MHz crystal for clock generation. It functions within an operating temperature range of -40°C to +85°C.

Telecom Feature Summary

• Integrates a complete DTMF transmitter and receiver using advanced CMOS technology for low power consumption and high noise immunity.
• Features a standard 8051 and 8086/8 microprocessor interface for precise control of transmitter and receiver functions.
• Includes adjustable guard time, automatic tone burst mode, and call progress detection capabilities.

Telecom Applications

• Paging systems
• Repeater systems and mobile radio interconnect dialers
• PBX systems and computer systems
• Fax machines and pay telephones
• Credit card verification

Telecom Procurement Notes

Verify the specific ordering suffix '-01P' confirms the 20-pin plastic DIP package variant. Confirm that the manufacturer designation aligns with IXYS Integrated Circuits Division or Clare, Inc., as historical records may vary. Ensure the component meets the required environmental specifications for the intended application environment.

Telecom Selection Notes

Select this component when a fully integrated DTMF solution compatible with standard 8051 or 8086/8 microprocessors is required. Consider the 20-pin DIP package for through-hole mounting requirements. Evaluate the need for adjustable guard times and call progress filtering features against system design constraints.

Telecom Part Context

The M-8888 is a monolithic dual-tone multi-frequency transceiver designed for central office quality performance. It combines a receiver based on the industry-standard M-8870 with a switched-capacitor digital-to-analog converter transmitter. This integration allows for precise timing and low distortion in telecommunications applications.

Telecom Replacement Considerations

The M-8888-01SM (20-pin plastic SOIC) and M-8888-01T (20-pin plastic SOIC, Tape and Reel) are functionally equivalent alternatives offering different packaging options. Other variants include the M-8888-01C and M-8888-01J for ceramic DIP packages.