The MAX9644/MAX9645/MAX9646 are small, single com- parators, ideal for a wide variety of portable electronics applications such as cell phones, media players, and notebooks that have extremely tight board space and power constraints.
The MAX9644, MAX9645, and MAX9646 are small, single‑ended comparators designed for portable electronics such as cell phones, media players, notebooks, and medical devices. They feature a 0.2 V internal reference, ultra‑low supply current, and operate from 1 V to 5.5 V while maintaining high input impedance even when powered down.
Available in a 1 mm × 1 mm × 0.6 mm 4‑bump UCSP package (equivalent to two 0402 resistors) or a 5‑pin SOT‑23, the devices provide propagation delays of about 15 ns, operate from –40 °C to +85 °C, and offer either open‑drain (MAX9644/5) or push‑pull (MAX9646) outputs.
| Input Voltage Range | -0.3 V to +5.5 V |
|---|---|
| Supply Current (max) | 700 nA |
| Typical Supply Current | 400 nA |
| Propagation Delay | 15 ns |
| Operating Temperature Range | -40 °C to +85 °C |
| Package Footprint (UCSP) | 1 mm × 1 mm |
The input voltage range is –0.3 V to +5.5 V.
The typical propagation delay is 15 ns.