The MAX9647/MAX9648 comparators are general-purpose, low-voltage, tiny pack comparators with advantages of low supply voltage, small package, and low cost. They also offer a wide supply voltage range, wide operating temperature range, competitive CMRR and PSRR, response time characteristics, input offset, low noise, output saturation voltage, input bias current, and RF immunity.
The MAX9647 and MAX9648 are general‑purpose, low‑voltage comparators offered in tiny SC70 and SOT‑23 packages. They are drop‑in replacements for the LMX331/LMX331H and are suited for mobile communications, notebooks, automotive, battery‑powered electronics, and other portable devices. The devices operate from a single supply of +1.8 V to +5.5 V and feature internal hysteresis (2 mV on the MAX9648) for noise immunity.
Key electrical parameters include low supply current (≈60 µA at 5 V), low output saturation voltage (120 mV), and a wide operating temperature range of –40 °C to +125 °C. The datasheet also lists absolute maximum ratings, detailed DC and AC characteristics, typical operating curves, pin assignments, and ordering information for both package types.
| Supply Voltage Range | +1.8 V to +5.5 V |
|---|---|
| Operating Temperature Range | -40 °C to +125 °C |
| Input Hysteresis (MAX9648) | 2 mV |
| Low Output Saturation Voltage | 120 mV |
They operate from a single supply of +1.8 V to +5.5 V.
The MAX9648 includes 2 mV of internal hysteresis for noise immunity.
Both devices are offered in 5‑pin SC70 (2.0 mm × 2.1 mm × 1.0 mm) and SOT‑23 packages.