The MAX4927 meets the needs of high-speed differential switching, including that of Gigabit Ethernet (10/100/1000) Base-T switching as well as LVDS and LVPECL switching. The MAX4927 provides enhanced ESD protection up to ±15kV and excellent high-frequency response, making the device especially useful for interfaces that must go to an outside connection. The MAX4927 offers extremely low capacitance (CON), as well as low on-resistance (RON), for low-insertion loss and very wide bandwidth. In addition to the four pairs of DPDT switches, the MAX4927 provides LED switching for laptop computer/docking station use. The MAX4927 is pin-to-pin equivalent to the PI3L500-A and STMUX1000L. The MAX4927 can replace either device in those applications, improving ESD protection and eliminating external ESD components. The MAX4927 is available in a space-saving 56-pin TQFN package and operates over the extended -40°C to +85°C temperature range.
The MAX4927 is a high‑speed analog switch designed for 1000Base‑T Ethernet, LVDS, and LVPECL applications. It offers up to +15 kV ESD protection, low on‑resistance (4 Ω typ) and low capacitance (8 pF typ), providing excellent insertion loss and return‑loss performance.
The device is supplied in a 56‑pin thin‑QFN package (5 mm × 11 mm) and operates from a 3.0 V to 3.6 V supply over an extended temperature range of –40 °C to +85 °C. It includes built‑in LED switches for docking‑station indicators and supports bidirectional switching of differential signals.
| ESD protection (Air‑Gap) | +15 kV |
|---|---|
| ESD protection (Contact) | +8 kV |
| ESD protection (Human Body Model) | +15 kV |
| On‑Capacitance (Con) typ | 8 pF |
| Bandwidth (‑3 dB) | 650 MHz |
| Return Loss @100 MHz | -23 dB |
| Supply Voltage (Vpp) | 3.0 V to 3.6 V |
| Package | 56‑pin TQFN, 5 mm × 11 mm |
| Operating Temperature Range | -40 °C to +85 °C |
The MAX4927 offers +15 kV air‑gap discharge, +8 kV contact discharge, and +15 kV human‑body model protection.
The device operates from a single supply of 3.0 V to 3.6 V.
It is supplied in a 56‑pin thin‑QFN package measuring 5 mm × 11 mm.