The MAX4850/MAX4850H/MAX4852/MAX4852H family of dual SPDT (single-pole/double-throw) switches operate from a single +2V to +5.5V supply and can handle signals greater than the supply rail. These switches feature low 3.5Ω or 3.5Ω/7Ω on-resistance with low on-capacitance, making them ideal for switching audio and data signals. The MAX4850/MAX4850H are configured with two SPDT switches and feature two comparators for headphone detection or mute/send key functions. The MAX4852 has two SPDT switches with no comparators for low 1µA supply current. For over-rail applications, these devices offer either the pass-through or high-impedance option. For the MAX4850/MAX4852, the signal (up to 5.5V) passes through the switch without distortion even when the positive supply rail is exceeded. For the MAX4850H/ MAX4852H, the switch input becomes high impedance when the input signal exceeds the supply rail. The MAX4850/MAX4850H/MAX4852/MAX4852H are available in the space-saving (3mm x 3mm), 16-pin TQFN package and operate over the extended temper-ature range of -40°C to +85°C.
The MAX4850/MAX4850H/MAX4852/MAX4852H family are dual SPDT analog switches that operate from a single +2 V to +5.5 V supply and can handle signals greater than the supply rail. They feature low on‑resistance (3.5 Ω) and low on‑capacitance (≈50 pF), making them suitable for audio and data signal routing, including USB 2.0 full‑speed applications.
These devices are offered in a space‑saving 16‑pin TQFN package (3 mm × 3 mm) and operate over –40 °C to +85 °C. The MAX4850 and MAX4852 pass signals through the switch when over‑rail, while the MAX4850H and MAX4852H present a high‑impedance state. Applications include USB switching, audio‑signal routing, cellular phones, notebook computers, and PDAs.
| Supply voltage range | +2 V to +5.5 V |
|---|---|
| On‑resistance | 3.5 Ω |
| On‑capacitance | ≈50 pF |
| Bandwidth | 135 MHz (-3 dB) |
| Supply current (MAX4850) | 5 µA |
| Package | 16‑pin TQFN, 3 mm × 3 mm |
| Operating temperature range | -40 °C to +85 °C |
| Logic level compatibility | 1.8 V logic compatible |
| Differential skew | 0.1 ns |
They operate from a single +2 V to +5.5 V supply.
When the input signal exceeds the supply rail, the switch input becomes high‑impedance.
The on‑resistance is low, about 3.5 Ω (or 3.5/7 Ω for certain variants).
They are available in a 16‑pin TQFN package measuring 3 mm × 3 mm.