The MAX391/MAX392/MAX393 are precision, quad, single-pole/single-throw (SPST) analog switches designed to operate at +3V, +5V, or ±5V. The MAX391 has four normally closed (NC) switches, and the MAX392 has four normally open (NO) switches. The MAX393 has two NO and two NC switches. All three devices offer low leakage (100pA max) and fast switching speeds (tON ≤ 130ns, tOFF ≤ 75ns). Power consumption is just 1µW—ideal for battery-operated equipment. All devices operate from a single +3V to +15V supply or from dual ±3.0V to ±8V supplies.
The MAX391, MAX392 and MAX393 are precision quad single‑pole/single‑throw analog switches offered by Maxim. MAX391 provides four normally‑closed switches, MAX392 four normally‑open switches, and MAX393 a mix of two NO and two NC switches. They feature low leakage (100 pA max), low power consumption (1 µW), and ESD protection >2000 V.
The devices operate from a single +3 V to +15 V supply or from dual ±3 V to ±8 V supplies. Electrical characteristics include on‑resistance as low as 30 Ω, turn‑on time ≤130 ns, turn‑off time ≤75 ns, and charge injection <5 pC. Ordering information, package options and pin descriptions are provided for DIP, SO, TSSOP, QFN and other form factors.
| On‑Resistance (RON) typical | 30 Ω |
|---|---|
| Off‑Leakage current (max) | 100 pA |
| Turn‑On Time (tON) | ≤130 ns |
| Turn‑Off Time (tOFF) | ≤75 ns |
| Power consumption | 1 µW |
| ESD protection | >2000 V |
| Charge injection | <5 pC |
The typical on‑resistance is 30 Ω for the devices when operated from a single +5 V supply.
They operate from a single +3 V to +15 V supply or from dual ±3 V to ±8 V supplies.
The maximum off‑leakage current is 100 pA.
They provide ESD protection greater than 2000 V per method 3015.7.