CD74FCT373
description
The CD74FCT373 is an octal, transparent, D-type latch with 3-state outputs using a small-geometry Bi CMOS technology. The output stage is a bination of bipolar and CMOS transistors that limits the output high level to two diode drops below VCC. This resultant lowering of output swing (0 V to 3.7 V) reduces power-bus ringing [a source of electromagnetic interference (EMI)] and minimizes VCC bounce and ground bounce and their effects during simultaneous output switching. The output configuration also enhances switching speed and is capable of sinking 48 m A.
The outputs are transparent to the inputs when latch enable (LE) is high. When LE is high, the Q outputs follow the data (D) inputs. When LE is low, the Q outputs are latched at the logic levels of the D inputs. The latch operation is independent of output-enable (OE) input.
OE can be used to place the eight outputs in either a normal logic state (high or low) or the high-impedance state. When OE is high, the outputs are...
