Catalog > Semiconductors > Integrated Circuits PBL3726/16 IC DIP-18 Speech Circuit Chip - Electronic Telephone Part No: PBL3726/16 31.22 ZAR inc for 1 Each (Quoting) Add to Cart Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Specifications Package Type: 18-pin Dual In-line Package (PDIP-18). Functionality: Performs essential telephone line matching, speech balancing, and microphone/earpiece amplification. Line Loss Compensation: Adjusts amplifier gain curves dynamically based on exchange supply and loop current. Mute Input: Enables standard Dual-Tone Multi-Frequency (DTMF) dialing suppression with active confidence tones. Compatibility: Pin-to-pin functional variants often match alternatives like the IL3726/18N series.