MAX4818

The MAX4818/MAX4819 high-bandwidth, low-on-resistance analog dual SPDT switches/4:1 multiplexers are designed to serve as integrated T1/E1 protection switches for 1+1 and N+1 line-card redundancy applications. Each MAX4818/MAX4819 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 4Ω typical on-resistance within the T1/E1 analog signal range. This high-bandwidth family of products is optimized for low return loss and matched pulse template performance in T1/E1 long-haul and short-haul applications.

The MAX4818/MAX4819 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.

Applications

• Add/Drop Multiplexers
• Avionics
• Base Stations and Base-Station Controllers
• Data Acquisition
• Digital Loop Carriers
• Edge Routers
• Industrial Applications
• Multi-Service Provisioning Platforms
• Multi-Service-Switches (MSSs)
• T1/E1 Redundancy Switching
• Telecom Signal Switching
• Test Equipment