The document introduces the characteristics and functions of the MAX4536/MAX4537/MAX4538 series of low-voltage quad single-pole/single-throw (SPST) switches, including their application scenarios, operating voltage, switch resistance, leakage current, etc.
The MAX4536, MAX4537, and MAX4538 are quad, low‑voltage, single‑pole/single‑throw (SPST) analog switches that share a common enable pin. MAX4536 offers four normally‑open switches, MAX4537 four normally‑closed switches, and MAX4538 a mix of two NO and two NC switches. They are pin‑compatible with the industry‑standard 74HC4316 and support both single‑supply (+2 V to +12 V) and dual‑supply (±2 V to ±6 V) operation.
Key features include low on‑resistance (200 Ω max, matched to 4 Ω between switches), fast switching (tON ≈ 100 ns, tOFF ≈ 80 ns at ±4.5 V), ultra‑low off‑leakage (1 nA at 25 °C), and robust ESD protection (>2 kV per IEC 61000‑4‑2). The datasheet also details absolute maximum ratings, electrical characteristics for various supply configurations, typical operating curves, and package options (DIP, SO, QSOP).
| Supply Voltage (Single) | +2 V to +12 V |
|---|---|
| On‑Resistance (max) | 200 Ω (matched to 4 Ω between switches, flat 10 Ω max) |
| Turn‑On / Turn‑Off Time | tON ≈ 100 ns, tOFF ≈ 80 ns at ±4.5 V supply |
| Off‑Leakage Current | 1 nA at +25 °C, 10 nA at +85 °C |
| ESD Protection | >2 kV per Method 3015.7 |
They operate from +2 V to +12 V with a single supply or from ±2 V to ±6 V with dual supplies.
The turn‑on time is about 100 ns (turn‑off about 80 ns) at a ±4.5 V supply.
The off‑leakage current is 1 nA at +25 °C.