The MAX4947/MAX4948 are low-voltage, low-power, high-performance analog switches that operate from a single +1.8V to +5.5V supply and have a low switching capacitance of 30pF for high switching speeds and low losses.
The MAX4947 (triple DPDT) and MAX4948 (hex SPDT) analog switches operate from a single +1.8 V to +5.5 V supply and are optimized for high‑speed data switching with low on‑resistance and low capacitance. Both devices feature rail‑to‑rail signal handling and are offered in compact UCSP (2.5 mm × 2.5 mm) and TQFN (4 mm × 4 mm) packages.
The datasheet includes absolute maximum ratings, detailed electrical characteristics, pin descriptions, truth tables, and application notes such as digital control inputs, power‑supply sequencing, and UCSP package guidelines. Package drawings and revision history are also provided.
| Supply Voltage Range | 1.8 V to 5.5 V |
|---|---|
| On‑Resistance (typ) | 42 Ω |
| Switch Capacitance (typ) | 30 pF |
| Operating Temperature Range | -40 °C to +85 °C |
| Package Types | 25‑Bump UCSP (2.5 mm × 2.5 mm) and 24‑TQFN (4 mm × 4 mm) |
The devices operate from a single +1.8 V to +5.5 V supply.
The MAX4947 has three logic inputs to control the switches in pairs.
When EN is driven high, it disables the CB control and places all switches in a high‑impedance state; driving EN low enables the switches.