An improved latch-type sense amplifier circuit having two cross-coupled
inverters forming a latch, a supply coupling device for selectively
connecting the latch to a supply source, and a bit line coupling circuits
for selectively connecting the inputs of each inverter to the
complimentary bit line from the memory array. The circuit is configured
to sense a voltage difference between the bit lines with improved
reliability by providing a delayed sense amplifier enable signal to pass
transistors for delaying disconnection of the bit lines from the sense
amplifier until the latching action is completed, and adding two
transistors in series with the existing transistors of the conventional
latch for correcting the offset between the threshold voltages of the
inverters of the latch.