MAX328/MAX329 are monolithic CMOS analog multiplexers with ultra-low off- and on-leakage, low power dissipation, high耐压, bidirectional operation. They are suitable for control systems, data logging systems, aircraft heads-up displays, data acquisition systems and other applications.
The MAX328 is a single‑ended 1‑of‑8 analog multiplexer, while the MAX329 is a differential 2‑of‑8 device. Both are monolithic CMOS parts designed for ultra‑low on‑ and off‑leakage (less than 1 pA at 25 °C) and can operate from single supplies of 10 V‑30 V or dual supplies of ±5 V‑±18 V. They are pin‑compatible with the DG508/DG509 series and can be used in fault‑tolerant circuits by adding a 40 kΩ resistor to each input.
Key specifications include a typical on‑resistance of 1.5 kΩ, off‑state leakage of about 0.3 pA, power dissipation up to 842 mW (PDIP), and operation over a temperature range from –40 °C to +125 °C depending on package. The devices are offered in multiple packages such as PDIP, Wide SO, CERDIP, and TQFN‑EP, and are suited for control systems, data‑logging, aircraft HUDs, and data‑acquisition applications.
| Off‑State Leakage Current (typical) | 0.3 pA |
|---|---|
| Power Dissipation (PDIP, typical) | 842 mW |
| Supply Voltage Range | ±5 V to ±18 V |
| Operating Temperature Range (MAX328EPE+ package) | -40 °C to +85 °C |
The typical off‑state leakage current is about 0.3 pA.
They can operate from ±5 V up to ±18 V.