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74ACTQ574SCX

P1-P3P4-P6P7-P9P10-P11
tm
74ACQ574, 74ACTQ574 Quiet Series™ Octal D-Type Flip-Flop with 3-STATE Outputs
April 2007
©1990 Fairchild Semiconductor Corporation www.fairchildsemi.com
74ACQ574, 74ACTQ574 Rev. 1.3
74ACQ574, 74ACTQ574
Quiet Series™ Octal D-Type Flip-Flop with 3-STATE Outputs
Features
■
I
CC
and I
OZ
reduced by 50%
■
Guaranteed simultaneous switching noise level and
dynamic threshold performance
■
Guaranteed pin-to-pin skew AC performance
■
Inputs and outputs on opposite sides of the package
allowing easy interface with microprocessors
■
Functionally identical to the ACQ/ACTQ374
■
3-STATE outputs drive bus lines or buffer memory
address registers
■
Outputs source/sink 24mA
■
Faster prop delays than the standard AC/ACT574
General Description
The ACQ/ACTQ574 is a high-speed, low-power octal
D-type flip-flop with a buffered Common Clock (CP) and
a buffered common Output Enable (OE
). The information
presented to the D inputs is stored in the flip-flops on the
LOW-to-HIGH clock (CP) transition.
ACQ/ACTQ574 utilizes FACT Quiet Series™ technology
to guarantee quiet output switching and improve
dynamic threshold performance. FACT Quiet Series fea-
tures GTO™ output control and undershoot corrector in
addition to a split ground bus for superior performance.
The ACQ/ACTQ574 is functionally identical to the
ACTQ374 but with different pin-out.
Ordering Information
Device also available in Tape and Reel. Specify by appending suffix “X” to the ordering number.
Connection Diagram Pin Descriptions
Order Number
Package
Number Package Description
74ACQ574SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300"
Wide Body
74ACQ574SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74ACTQ574SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300"
Wide Body
74ACTQ574SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Pin Names Description
D
0
–D
7
Data Inputs
CP Clock Pulse Input
OE
3-STATE Output Enable Input
O
0
–O
7
3-STATE Outputs
FACT™, Quiet Series™, FACT Quiet Series™, and GTO™ are trademarks of Fairchild Semiconductor Corporation.
74ACQ574, 74ACTQ574 Quiet Series™ Octal D-Type Flip-Flop with 3-STATE Outputs
©1990 Fairchild Semiconductor Corporation www.fairchildsemi.com
74ACQ574, 74ACTQ574 Rev. 1.3 2
Logic Symbols
IEEE/IEC
Functional Description
The ACQ/ACTQ574 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-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. Operation of the OE
input does
not affect the state of the flip-flops.
Function Table
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
X
=
Immaterial
Z
=
High Impedance
=
LOW-to-HIGH Transition
NC
=
No Change
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.
Figure 1.
Inputs Internal Outputs
FunctionOE CP D Q O
N
HHLNCZHold
HHH NC Z Hold
HLLZLoad
HHHZLoad
LLLLData Available
LHHHData Available
LHL NC NC No Change in
Data
LHHNCNCNo Change in
Data
74ACQ574, 74ACTQ574 Quiet Series™ Octal D-Type Flip-Flop with 3-STATE Outputs
©1990 Fairchild Semiconductor Corporation www.fairchildsemi.com
74ACQ574, 74ACTQ574 Rev. 1.3 3
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to absolute maximum ratings.
Symbol Parameter Rating
V
CC
Supply Voltage –0.5V to +7.0V
I
IK
DC Input Diode Current
V
I
=
–0.5V
V
I
=
V
CC
+ 0.5V
–20mA
+20mA
V
I
DC Input Voltage –0.5V to V
CC
+ 0.5V
I
OK
DC Output Diode Current
V
O
=
–0.5V
V
O
=
V
CC
+ 0.5V
–20mA
+20mA
V
O
DC Output Voltage –0.5V to V
CC
+ 0.5V
I
O
DC Output Source or Sink Current ±50mA
I
CC
or I
GND
DC V
CC
or Ground Current per Output Pin ±50mA
T
STG
Storage Temperature –65°C to +150°C
DC Latch-Up Source or Sink Current ±300mA
T
J
Junction Temperature 140°C
Symbol Parameter Rating
V
CC
Supply Voltage
ACQ
ACTQ
2.0V to 6.0V
4.5V to 5.5V
V
I
Input Voltage 0V to V
CC
V
O
Output Voltage 0V to V
CC
T
A
Operating Temperature –40°C to +85°C
∆
V
/
∆
t Minimum Input Edge Rate, ACQ Devices:
V
IN
from 30% to 70% of V
CC
,
V
CC
@ 3.0V, 4.5V, 5.5V
125mV/ns
∆
V
/
∆
t Minimum Input Edge Rate, ACTQ Devices:
V
IN
from 0.8V to 2.0V, V
CC
@ 4.5V, 5.5V
125mV/ns
P1-P3P4-P6P7-P9P10-P11

74ACTQ574SCX

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Buy 74ACTQ574SCX
Manufacturer:
ON Semiconductor
Description:
IC FF D-TYPE SNGL 8BIT 20SOIC
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