The MAX4889B/MAX4889C high-speed passive switches route PCI Express® (PCIe) data between two possible destinations in desktop or notebook PCs.
The MAX4889B and MAX4889C are high‑speed passive switches that route PCI Express (PCIe) data between two destinations in desktop or notebook PCs. They are quad double‑pole/double‑throw (4 × DPDT) switches with a single digital control input (SEL) and operate from a single 3.0 V to 3.6 V supply.
The devices support PCIe Gen I‑III data rates, SAS I‑III applications (MAX4889C), and operate over an extended temperature range of –40 °C to +85 °C. They are offered in a 42‑pin TQFN package and include specifications such as turn‑on/off times, propagation delay, and on‑resistance curves.
| Supply Voltage Range | 3.0 V – 3.6 V |
|---|---|
| Operating Temperature Range | -40 °C to +85 °C |
| Switch Configuration | 4 × DPDT (quad double‑pole/double‑throw) |
| Typical Source Current (MAX4889C) | 10 µA (typ) |
| Typical Internal Bias Resistor (MAX4889C) | 60 kΩ (typ) |
The devices operate from a single 3.0 V to 3.6 V power supply.
They are specified to work from –40 °C up to +85 °C.
Each device provides four double‑pole/double‑throw (4 × DPDT) switches.
The MAX4889C provides a typical source current of 10 µA.