74ACT574PC Fairchild Semiconductor, 74ACT574PC Datasheet - Page 2

• Manufacturer Part Number: 74ACT574PC
• Description: IC F/F OCT D-TYPE 3ST 20-DIP
• Manufacturer: Fairchild Semiconductor
• Series: 74ACTr
• Type: D-Type Busr

Specifications of 74ACT574PC

• Function: Standard
• Output Type: Tri-State Non Inverted
• Number Of Elements: 1
• Number Of Bits Per Element: 8
• Frequency - Clock: 110MHz
• Delay Time - Propagation: 7ns
• Trigger Type: Positive Edge
• Current - Output High, Low: 24mA, 24mA
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 20-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 74ACT574

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Functional Description
The AC/ACT574 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 com-
mon to all flip-flops. The eight flip-flops will store the state
of their individual D-type 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 OE
is HIGH, the outputs go to the high impedance state. Oper-
ation 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
Function Table
H
L
X

Z
NC
OE
LOW Voltage Level
High Impedance
H
H
H
H
HIGH Voltage Level
Immaterial
L
L
L
L
LOW-to-HIGH Transition
No Change
Inputs




CP D
H
H
H
H
H
H
H
H
L
L
L
L
Internal
NC
NC
NC
NC
Q
H
H
L
L
Outputs
NC
O
NC
H
Z
Z
Z
Z
L
N
Hold
Hold
Load
Load
Data Available
Data Available
No Change in Data
No Change in Data
Function