74VHC574N_Q Fairchild Semiconductor, 74VHC574N_Q Datasheet - Page 2

• Manufacturer Part Number: 74VHC574N_Q
• Description: Flip Flops Oct D-Type Flip-Flop
• Manufacturer: Fairchild Semiconductor

Specifications of 74VHC574N_Q

• Number Of Circuits: 8
• Logic Family: 74VHC
• Logic Type: D-Type Flip-Flop
• Polarity: Non-Inverting
• Input Type: Single-Ended
• Output Type: Single-Ended
• Propagation Delay Time: 16.7 ns
• High Level Output Current: - 8 mA
• Low Level Output Current: 8 mA
• Supply Voltage - Max: 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Package / Case: PDIP-20
• Minimum Operating Temperature: - 40 C
• Number Of Input Lines: 8
• Number Of Output Lines: 8
• Supply Voltage - Min: 2 V

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Functional Description
The VHC574 consists of eight edge-triggered flip-flops with
individual D-type inputs and 3-STATE true outputs. The
buffered clock and buffered Output Enable are common to
all flip-flops. The eight flip-flops will store the state of their
individual D inputs that meet the setup and hold time
requirements on the LOW-to-HIGH Clock (CP) transition.
With the Output Enable (OE) LOW, the contents of the
eight flip-flops are available at the outputs. When the OE is
HIGH, the outputs go to the high impedance state. Opera-
tion of the OE input does not affect the state of the flip-
flops.
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
2
Truth Table
H
L
X

Z
LOW Voltage Level
High Impedance
HIGH Voltage Level
Immaterial
LOW-to-HIGH Transition
D
H
X
L
n
Inputs
CP


X
OE
H
L
L
Outputs
O
H
L
Z
n