MAX4503/MAX4504 are low-voltage, dual-supply, single-pole/single-throw (SPST), CMOS analog switches. The MAX4503 is normally open (NO). The MAX4504 is normally closed (NC). These CMOS switches can operate continuously with dual supplies between ±1.V and ±6V. Each switch can handle rail-to-rail analog signals. The off-leakage current is only 1nA at +25°C or 10nA at +85°C. When using ±5V supplies, the digital input is CMOS-logic compatible. A unique logic input architecture allows this even though the parts have no ground pin. For single-supply operation, use the MAX4501/ MAX4502, which are pin-for-pin equivalents.
The MAX4503 (normally open) and MAX4504 (normally closed) are low‑voltage, dual‑supply SPST CMOS analog switches that operate with ±1 V to ±6 V supplies. They handle rail‑to‑rail analog signals, feature a guaranteed on‑resistance of 250 Ω at ±5 V, off‑leakage as low as 1 nA at +25 °C, and fast switching (tON ≈ 150 ns, tOFF ≈ 100 ns). The devices are CMOS‑logic compatible and include a unique logic input architecture that works without a ground pin.
The datasheet provides absolute maximum ratings, detailed electrical characteristics, pin configurations for DIP‑8, SO‑8 and SOT‑23‑5 packages, ordering information, package drawings, and test circuit examples. Application areas include battery‑operated equipment, audio/video signal routing, low‑voltage data‑acquisition systems, communications circuits, cellular phones, PCMCIA cards and modems.
| Supply Voltage Range | ±1 V to ±6 V |
|---|---|
| Off‑Leakage Current | 1 nA at +25 °C (10 nA at +85 °C) |
| On‑Resistance | 250 Ω (±5 V supplies) |
| Charge Injection | 10 pC max |
| Switching Speed | tON ≈ 150 ns, tOFF ≈ 100 ns |
| Operating Temperature Range (MAX4503C/4C) | 0 °C to +70 °C |
The off‑leakage current is 1 nA at +25 °C (10 nA at +85 °C).
Dual‑supply operation is supported from ±1 V to ±6 V.
The typical on‑resistance is 250 Ω.