Microchip Technology, Inc. Interface Transceiver IC LE58QL021BVCT

The LE58QL021BVCT is a Quad Low Voltage Subscriber Line Audio-Processing Circuit (QLSLAC,Ñ¢) designed for use in telephone switch line cards. It operates on low-power 3.3 V CMOS technology and is compatible with 5-V tolerant digital inputs. This device integrates the functionality of four codec/filters, making it suitable for applications requiring audio processing in programmable line cards. The LE58QL021BVCT features software programmability for various parameters, including SLIC device input impedance, transhybrid balance, transmit and receive gains, and equalization. It supports both single and dual PCM ports, allowing for up to 128 channels per port at a clock rate of 8.192 MHz. The device also includes built-in test modes for loopback and tone generation, enhancing its utility in testing and diagnostics. With a maximum channel bandwidth suitable for V.90 modems and a performance guarantee over a 12 dB gain range, the LE58QL021BVCT offers flexibility and reliability for telecom applications. Its advanced architecture and low power consumption make it an economical choice for high-density line card designs.