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HD74HC534

Hitachi Semiconductor
Part Number HD74HC534
Manufacturer Hitachi Semiconductor
Description Octal D-type Flip-Flop
Published Mar 23, 2005
Detailed Description HD74HC374/HD74HC534 Octal D-type Flip-Flops (with 3-state outputs) Octal D-type Flip-flops (with inverted 3-state output...
Datasheet PDF File HD74HC534 PDF File

HD74HC534
HD74HC534

Overview
HD74HC374/HD74HC534 Octal D-type Flip-Flops (with 3-state outputs) Octal D-type Flip-flops (with inverted 3-state outputs) Description These devices are positive edge triggered flip-flops.
The difference between HD74HC374 and HD74HC534 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 is applied to the output control (OC) input, all outputs go to a high impedance state, regardless of what signals are present at the other inputs and the state of the storage elements.
Features • • • • • High Speed Operation: tpd (Clock to Q) = 18 ns typ (CL = 50 pF) High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 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 HD74HC374 Q H L No change Z HD74HC534 Q L H No change Z irrelevant off (high-impedance) state of a 3-state output.
HD74HC374/HD74HC534 Pin Arrangement HD74HC374 Out put Control 1 1Q 2 1D 3 2D 4 2Q 5 3Q 6 3D 7 4D 8 4Q 9 GND 10 (Top view) 20 VCC 19 8Q 18 8D 17 7D 16 7Q 15 6Q 14 6D 13 5D 12 5Q 11 Clock HD74HC534 Out put Control 1 1Q 2 1D 3 2D 4 2Q 5 3Q 6 3D 7 4D 8 4Q 9 GND 10 (Top view) 20 VCC 19 8Q 18 8D 17 7D 16 7Q 15 6Q 14 6D 13 5D 12 5Q 11 Clock 2 HD74HC374/HD74HC534 Absolute Maximum Ratings Item Supply voltage range Input voltage Output voltage DC current drain per pin DC current drain per VCC , GND DC input diode current DC output diode current Power Dissipation per package Storage temperature Symbol VCC VIN VOUT I OUT I CC, I GND I IK I OK PT Tstg Rating –0.
5 to +7.
0 –0.
5 to VCC + 0.
5 –0.
5 to VCC + 0.
5 ±35 ±75 ±20 ±20 500 –65 to +150 Unit V V V mA mA mA mA mW °C Block Diagram HD74HC374 1D D Q C Q Clock 2D D Q C Q 3D D Q C Q 4D D Q C Q 5D D Q C Q 6D D Q C Q 7D D Q...


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