A latch type sense amplifier circuit comprises first and second latch circuits which output the same output signals when a potential difference between a bit line pair is equal to or greater than a predetermined value. The first and second latch circuits output different output signals when the potential difference between the bit line pair is less than the predetermined value. The latch type sense amplifier circuit further comprises a comparison result signal generating circuit which compares the output signals from the first and second latch circuits and outputs a signal indicative of the comparison result.