HD74HCT373

HD74HCT373/HD74HCT533 Octal D-type Transparent Latches (with 3-state outputs)/ Octal D-type Transparent Latches (with inverted 3-state outputs) Description When the latch enable input is high, the Q outputs of HD74HCT373 will follow the D inputs and the Q outputs of HD74HCT533 will follow the inversion of the D inputs. When the latch enable goes low, data at the D inputs will be retained at the outputs until latch enable returns high again. When a high logic level is applied to the output control input, all outputs go to a high impedance state, regardless of what signals present at the other inputs and the state of the storage elements. Features LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility High Speed Operation: tpd (Data to Q) = 14 ns typ (CL = 50 pF) High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 4.5 to 5.5 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Output Control L L L H X : Z : Enable G H H L X D H L X X HD74HCT373 Q H L No change Z HD74HCT533 Q L H No change Z Irrelevant Off (high-impedance) state of a 3-state output. HD74HCT373/HD74HCT533 Pin Arrangement HD74HCT373 Output Control 1 1Q 1D 2D 2Q 3Q 3D 4D 4Q 2 3 4 5 6 7 8 9 20 VCC 19 8Q 18 8D 17 7D 16 7Q 15 6Q 14 6D 13 5D 12 5Q 11 Enable G (Top view) GND 10 HD74HCT533 Output Control 1 1Q 1D 2D 2Q 3Q 3D 4D 4Q 2 3 4 5 6 7 8 9 20 VCC 19 8Q 18 8D 17 7D 16 7Q 15 6Q 14 6D 13 5D 12 ...