HD74HCT534 - Hitachi Semiconductor

HD74HCT534 Octal D-type Flip-Flops(with inverted 3-state outputs)

These device are positive edge triggered flip-flops. The difference between HD74HCT374 and HD74HCT534 is only that the former is a true outputs and the latter is a false outputs. Data at the D inputs, meeting the setup and hold time requirements, are transferred to the Q outputs on positive going transitions of the clock (CK) input. When a high logic level i.

Features

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• LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility High Speed Operation: tpd (Clock to Q) = 15 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 : L X Clock D H L X X HD74HCT374 Q H L No change Z HD74HCT534 Q L H No change Z Irrelevant Off (high-impedance) state of a 3-state output. HD74HCT374/HD74HCT534 Pin Arrangement HD74HCT374 Output Control 1 1Q 1D 2D 2Q .