MAX4815

19-3951; Rev 2; 1/07 High-Bandwidth, T1/E1, SPST Analog Switches General Description The MAX4815/MAX4816/MAX4817 high-bandwidth, low-on-resistance, quad-SPST analog switches are designed to serve as integrated T1/E1 protection switches for 1+1 and N+1 line-card redundancy applications. Each MAX4815/MAX4816/MAX4817 replaces four electromechanical relays, significantly reducing board space, simplifying PC board routing, and reducing power consumption. These devices operate with ±3.3V or ±5V dual supplies for applications requiring T1/E1 signal switching in the line side of the interface transformer. Internal voltage multipliers drive the analog switches, yielding excellent linearity and low 3.7Ω typical on-resistance within the T1/E1 analog signal range. This high-bandwidth (550MHz typical) family of products is optimized for low return loss and matched pulse template performance in T1/E1 long-haul and short-haul applications. The MAX4815/MAX4816/MAX4817 are available in a tiny 16-pin, 5mm x 5mm, thin QFN package and are specified over the extended -40°C to +85°C temperature range. Features ♦ Quad-SPST NO, NC, and NC/NO Configurations ♦ Dual-Supply Operation from ±3.3V to ±5V ♦ Single-Supply Operation from +6V to +11V ♦ Hot Insertion Tolerant with No DC Path to the Supplies ♦ Low On-Resistance, RON = 3.7Ω (typ) and 6Ω (max) ♦ Over 550MHz, -3dB Signal Bandwidth ♦ Excellent Crosstalk and Off-Isolation Performance Over the T1/E1 Signal Spectrum: 110dB Crosstalk Attenuation at 1M...