For accurate comparator applications it is important to maintain a stable power supply with minimized noise and glitches. Output rise and fall times are in the tens of nanoseconds, and must be treated as high speed logic devices. The bypass capacitor must be as close to the supply pin as possible and connected to a solid ground plane, and preferably directly between the (V+) and GND pins.

Minimize coupling between outputs and inputs to prevent output oscillations. As shown in the figure below, it is "OK" to run input and output traces in parallel as long as there is a (V+) or GND trace between output to reduce coupling. A "better" way to reduce coupling is to have the traces ran further away from each other.

When series resistance is added to inputs, place the resistor close to the device. A low value (<100 ohms) resistor can also be added in series with the output to dampen any ringing or reflections on long, non-impedance controlled traces. For best edge shapes, controlled impedance traces with back-terminations must be used when routing long distances.