MC34017A-1P

Telecom Overview

The MC34017A-1P is a telephone tone ringer integrated circuit manufactured by NXP USA Inc. (formerly Freescale Semiconductor). It operates within an ambient temperature range of -20°C to 60°C and utilizes an 8-pin Plastic DIP package. The device generates a warble tone with high and low frequencies centered around 1.0 kHz and 808 Hz, respectively, at a warble rate of 12.5 Hz. It features an internal full-wave diode bridge for AC input rectification and a push-pull output stage capable of driving piezoelectric transducers directly. The maximum operating AC input current is 20 mA RMS, with a typical output voltage swing of 37 V peak-to-peak.

Telecom Feature Summary

• Complete telephone bell replacement circuit requiring minimal external components
• Integrated on-chip diode bridge and transient protection mechanisms
• Direct drive capability for piezoelectric sound elements via push-pull output stage
• Input impedance signature compliant with Bell and EIA standards

Telecom Applications

• Telephone line tone ringer circuits
• Piezoelectric transducer drivers
• Telecommunications equipment

Telecom Procurement Notes

Verify the specific suffix 'P' indicates the 8-lead Plastic DIP package configuration. Confirm the '-1' designation corresponds to the 1.0 kHz base frequency variant. Ensure the component meets the required -20°C to 60°C operating temperature range for your application environment. Cross-reference the datasheet revision 3.0 for accurate electrical characteristics.

Telecom Selection Notes

Select the MC34017A-1P when a 1.0 kHz base frequency is required for telephone ringer applications. Consider the MC34017A-2 or A-3 variants if different base frequencies are needed. Evaluate the need for direct piezo driver integration versus discrete solutions. Verify that the 8-pin DIP package fits the target PCB layout constraints.

Telecom Part Context

The MC34017A series belongs to the analog integrated circuit portfolio originally developed by Freescale Semiconductor. This family provides complete tone ringer solutions for telecommunications systems. The device simplifies design by integrating power supply derivation from the ringing signal and tone generation logic into a single chip.

Telecom Replacement Considerations

Check for updated NXP part numbers replacing the legacy Freescale designation. Verify pinout compatibility if substituting with other tone ringer ICs. Ensure equivalent acoustic output levels and impedance signatures match system requirements.