MC34017A-2EFR2

Telecom Overview

The MC34017A-2EFR2 is a dedicated telephone ringer circuit manufactured by Motorola. It operates within a supply voltage range of ±34V to 41V and dissipates up to 1W of power. The component functions as a single-channel tone ringer designed for telecom applications. It supports an operating temperature range from -20°C to 60°C. This integrated circuit is engineered to generate audible ringing signals in telecommunication systems, providing reliable performance under standard line conditions.

Telecom Feature Summary

• Integrated tone ringer functionality for telecommunications equipment
• Designed for direct interface with telephone line signaling
• Operates on dual-polarity power supplies typical of central office lines

Telecom Applications

• Telephony ringer circuits
• Telephone set audio generation
• Central office line interface modules

Telecom Procurement Notes

Verify the manufacturer origin, as this part number appears associated with both Motorola and NXP due to corporate acquisitions. Confirm the exact package type and pinout against the specific datasheet revision. Ensure the supplier provides genuine components with traceable history. Check RoHS compliance status if required for modern assembly processes. Validate the electrical specifications match the target system requirements before purchase.

Telecom Selection Notes

Select this component for legacy or specific telecom designs requiring a dedicated hardware ringer solution. It is suitable for applications needing a simple, low-component-count approach to generating ringing tones. Consider the ±34V to 41V supply requirement when designing the power stage. Evaluate thermal dissipation capabilities given the 1W power rating. Compare against newer digital alternatives if cost or size is a primary constraint.

Telecom Part Context

This device belongs to the family of analog telephone interface circuits. It serves as a specialized IC for generating acoustic signals in traditional landline telephones. The part reflects older semiconductor technologies focused on robust analog signal generation for voice band applications. It is distinct from general-purpose audio amplifiers due to its specific line-interface characteristics.