The MAX4731/MAX4732/MAX4733 are low-voltage, dual, single-pole/single-throw (SPST) analog switches that operate from a single +2V to +11V supply and handle rail-to-rail analog signals. These switches exhibit low leakage current (0.1nA) and consume less than 0.5nW (typ) of quiescent power, making them ideal for battery-powered applications. When powered from a +3V supply, these switches feature 50Ω (max) on-resistance (RON) with 3.5Ω (max) matching between channels, and 9Ω (max) flatness over the specified signal range. The MAX4731 has two normally open (NO) switches, the MAX4732 has two normally closed (NC) switches, and the MAX4733 has one NO and one NC switch. The MAX4731/MAX4732/MAX4733 are available in 9-bump chip-scale packages (UCSP™), along with 8-pin TDFN and 8-pin µMAX® packages. The tiny UCSP occupies a 1.52mm x 1.52mm area and significantly reduces the required PC board area.
The MAX4731, MAX4732 and MAX4733 are low‑voltage, dual, single‑pole/single‑throw analog switches that operate from a single +2 V to +11 V supply and handle rail‑to‑rail signals. They feature low leakage (<0.1 nA) and ultra‑low quiescent power (<0.5 nW), making them suitable for battery‑powered systems.
The devices are offered in three package styles—9‑bump UCSP, 8‑pin µMAX and 8‑pin TDFN—and include detailed electrical characteristics, dynamic performance data, and recommended over‑voltage protection using external diodes. Application information and pin‑configuration tables help designers integrate the switches into audio/video routing, data‑acquisition, and mobile device circuits.
| Supply Voltage Range | +2 V to +11 V |
|---|---|
| On‑Resistance (R_ON) at +3 V | 50 Ω (max) |
| Leakage Current | < 0.1 nA |
Yes, the MAX4731/2/3 are TTL compatible when powered from a +5 V supply.