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74AC574MTCX

P1-P3P4-P6P7-P9
© 2005 Fairchild Semiconductor Corporation DS009910 www.fairchildsemi.com
September 1988
Revised March 2005
74AC574 • 74ACT574 Octal D-Type Flip-Flop with 3-STATE Outputs
74AC574 • 74ACT574
Octal D-Type Flip-Flop with 3-STATE Outputs
General Description
The AC/ACT574 is a high-speed, low power octal flip-flop
with a buffered common Clock (CP) and a buffered com-
mon Output Enable (OE
). The information presented to the
D-type inputs is stored in the flip-flops on the LOW-to-HIGH
Clock (CP) transition.
The AC/ACT574 is functionally identical to the AC/ACT374
except for the pinouts.
Features
■ I
CC
and I
OZ
reduced by 50%
■ Inputs and outputs on opposite sides of package
allowing easy interface with microprocessors
■ Useful as input or output port for microprocessors
■ Functionally identical to AC/ACT374
■ 3-STATE outputs for bus-oriented applications
■ Outputs source/sink 24 mA
■ ACT574 has TTL-compatible inputs
Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Pb-Free package per JEDEC J-STD-020B.
FACT
is a trademark of Fairchild Semiconductor Corporation.
Order Number Package Number Package Description
74AC574SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74AC574SJ M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74AC574MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74AC574PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
74ACT574SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74ACT574SJ M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74ACT574MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74ACT574PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
www.fairchildsemi.com 2
74AC574 • 74ACT574
Logic Symbols
IEEE/IEC
Connection Diagram
Pin Descriptions
Function Table
H HIGH Voltage Level
L
LOW Voltage Level
X
Immaterial
Z
High Impedance
LOW-to-HIGH Transition
NC
No Change
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.
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
Inputs Internal Outputs Function
OE
CP D Q
O
N
HHL NC Z Hold
H HH NC Z Hold
H
L L Z Load
H
H H Z Load
L
L L L Data Available
L
H H H Data Available
L H L NC NC No Change in Data
L H H NC NC No Change in Data
3 www.fairchildsemi.com
74AC574 • 74ACT574
Absolute Maximum Ratings(Note 1) Recommended Operating
Conditions
Note 1: Absolute maximum ratings are those values beyond which damage
to the device may occur. The databook specifications should be met, with-
out exception, to ensure that the system design is reliable over its power
supply, temperature, and output/input loading variables. Fairchild does not
recommend operation of FACT
circuits outside databook specifications.
DC Electrical Characteristics for AC
Note 2: All outputs loaded; thresholds on input associated with output under test.
Note 3: Maximum test duration 2.0 ms, one output loaded at a time.
Note 4: I
IN
and I
CC
@ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V V
CC
.
Supply Voltage (V
CC
) 0.5V to 7.0V
DC Input Diode Current (I
IK
)
V
I
0.5V 20 mA
V
I
V
CC
0.5V 20 mA
DC Input Voltage (V
I
) 0.5V to V
CC
0.5V
DC Output Diode Current (I
OK
)
V
O
0.5V 20 mA
V
O
V
CC
0.5V 20 mA
DC Output Voltage (V
O
) 0.5V to V
CC
0.5V
DC Output Source
or Sink Current (I
O
) 50 mA
DC V
CC
or Ground Current
Per Output Pin (I
CC
or I
GND
) 50 mA
Storage Temperature (T
STG
) 65 C to 150 C
Junction Temperature (T
J
)
PDIP 140
C
Supply Voltage (V
CC
)
AC 2.0V to 6.0V
ACT 4.5V to 5.5V
Input Voltage (V
I
)0V to V
CC
Output Voltage (V
O
)0V to V
CC
Operating Temperature (T
A
) 40 C to 85 C
Minimum Input Edge Rate (
V/ t)
AC Devices
V
IN
from 30% to 70% of V
CC
V
CC
@ 3.3V, 4.5V, 5.5V 125 mV/ns
Minimum Input Edge Rate (
V/ t)
ACT Devices
V
IN
from 0.8V to 2.0V
V
CC
@ 4.5V, 5.5V 125 mV/ns
Symbol Parameter
V
CC
T
A
25 CT
A
40 C to 85 C
Units Conditions
(V) Typ Guaranteed Limits
V
IH
Minimum HIGH Level 3.0 1.5 2.1 2.1 V
OUT
0.1V
Input Voltage 4.5 2.25 3.15 3.15 V or V
CC
0.1V
5.5 2.75 3.85 3.85
V
IL
Maximum LOW Level 3.0 1.5 0.9 0.9 V
OUT
0.1V
Input Voltage 4.5 2.25 1.35 1.35 V or V
CC
0.1V
5.5 2.75 1.65 1.65
V
OH
Minimum HIGH Level 3.0 2.99 2.9 2.9
Output Voltage 4.5 4.49 4.4 4.4 V I
OUT
50 A
5.5 5.49 5.4 5.4
3.0 2.56 2.46 V
IN
V
IL
or V
IH
4.5 3.86 3.76 V I
OH
12 mA
5.5 4.86 4.76 I
OH
24 mA I
OH
I
OH
24 mA (Note 2)
V
OL
Maximum LOW Level 3.0 0.002 0.1 0.1
Output Voltage 4.5 0.001 0.1 0.1 V I
OUT
50 A
5.5 0.001 0.1 0.1
V
IN
V
IL
or V
IH
3.0 0.36 0.44 I
OL
12 mA
4.5 0.36 0.44 V I
OL
24 mA
5.5 0.36 0.44 I
OL
24 mA (Note 2)
I
IN
(Note 4) Maximum Input Leakage Current 5.5 0.1 1.0 AV
I
V
CC
, GND
I
OZ
Maximum V
I
(OE) V
IL
, V
IH
3-STATE 5.5 0.25 2.5 AV
I
V
CC
, V
GND
Leakage Current V
O
V
CC
, GND
I
OLD
Minimum Dynamic 5.5 75 mA V
OLD
1.65V
I
OHD
Output Current (Note 3) 5.5 75 mA V
OHD
3.85V
I
CC
(Note 4) Maximum Quiescent Supply Current 5.5 4.0 40.0 AV
IN
V
CC
or GND
P1-P3P4-P6P7-P9

74AC574MTCX

Mfr. #:
Buy 74AC574MTCX
Manufacturer:
ON Semiconductor
Description:
IC FF D-TYPE SNGL 8BIT 20TSSOP
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