74AC574
OCTAL D-TYPE FLIP-FLOP
WITH 3 STATE OUTPUTS (NON INVERTED)
s
s
s
s
s
s
s
s
s
HIGH SPEED:
f
MAX
= 250MHz (TYP.) at V
CC
= 5V
LOW POWER DISSIPATION:
I
CC
= 4µA(MAX.) at T
A
=25°C
HIGH NOISE IMMUNITY:
V
NIH
= V
NIL
= 28 % V
CC
(MIN.)
50Ω TRANSMISSION LINE DRIVING
CAPABILITY
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 24mA (MIN)
BALANCED PROPAGATION DELAYS:
t
PLH
≅
t
PHL
OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 2V to 6V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 574
IMPROVED LATCH-UP IMMUNITY
DIP
SOP
TSSOP
ORDER CODES
PACKAGE
DIP
SOP
TSSOP
TUBE
74AC574B
74AC574M
T&R
74AC574MTR
74AC574TTR
DESCRIPTION
The 74AC574 is an advanced high-speed CMOS
OCTAL D-TYPE FLIP-FLOP with 3 STATE
OUTPUTS NON INVERTING fabricated with
sub-micron silicon gate and double-layer metal
wiring C
2
MOS technology.
These 8 bit D-Type Flip-Flop are controlled by a
clock input (CK) and an output enable input (OE).
On the positive transition of the clock, the Q
outputs will be set to the logic that were setup at
the D inputs.
PIN CONNECTION AND IEC LOGIC SYMBOLS
While the (OE) input is low, the 8 outputs will be in
a normal logic state (high or low logic level); while
OE is in high level, the outputs will be in a high
impedance state.
The output control does not affect the internal
operation of flip-flops; that is, the old data can be
retained or the new data can be entered even
while the outputs are off.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
April 2001
1/11
74AC574
ABSOLUTE MAXIMUM RATINGS
Symbol
V
CC
V
I
V
O
I
IK
I
OK
I
O
Supply Voltage
DC Input Voltage
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Current
Parameter
Value
-0.5 to +7
-0.5 to V
CC
+ 0.5
-0.5 to V
CC
+ 0.5
±
20
±
20
±
50
±
400
-65 to +150
300
Unit
V
V
V
mA
mA
mA
mA
°C
°C
I
CC
or I
GND
DC V
CC
or Ground Current
Storage Temperature
T
stg
T
L
Lead Temperature (10 sec)
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
RECOMMENDED OPERATING CONDITIONS
Symbol
V
CC
V
I
V
O
T
op
dt/dv
Supply Voltage
Input Voltage
Output Voltage
Operating Temperature
Input Rise and Fall Time V
CC
= 3.0, 4.5 or 5.5V (note 1)
Parameter
Value
2 to 6
0 to V
CC
0 to V
CC
-55 to 125
8
Unit
V
V
V
°C
ns/V
1) V
IN
from 30% to 70% of V
CC
3/11
74AC574
AC ELECTRICAL CHARACTERISTICS
(C
L
= 50 pF, R
L
= 500
Ω,
Input t
r
= t
f
= 3ns)
Test Condition
Symbol
Parameter
V
CC
(V)
3.3
(*)
5.0
(**)
3.3
(*)
5.0
(**)
3.3
(*)
5.0
(**)
3.3
(*)
5.0
(**)
3.3
(*)
5.0
(**)
3.3
(*)
5.0
(**)
3.3
(*)
5.0
(**)
75
95
T
A
= 25°C
Min.
Typ.
6.5
5.0
7.0
5.0
6.5
5.0
1.5
1.5
-0.5
0
0.5
0
220
250
Max.
13.5
9.5
11.0
8.5
12.0
9.5
6.0
4.0
2.5
1.5
2.5
1.5
60
85
Value
-40 to 85°C
Min.
Max.
15.0
11.0
12.0
9.0
13.0
10.5
7.0
5.0
3.0
2.0
3.0
2.0
60
85
-55 to 125°C
Min.
Max.
16.5
11.5
13.0
9.5
14.0
11.5
7.0
5.0
3.0
2.0
3.0
2.0
ns
ns
Unit
t
PLH
t
PHL
Propagation Delay
Time
CK to Q
t
PZL
t
PZH
Output Enable
Time
t
PLZ
t
PHZ
Output Disable
Time
t
W
CLOCK Pulse
Width HIGH or
LOW
Setup Time D to
CK, HIGH or LOW
Hold Time D to CK,
HIGH or LOW
Maximum Clock
Frequency
ns
ns
t
s
t
h
f
MAX
ns
ns
MHz
(*) Voltage range is 3.3V
±
0.3V
(**) Voltage range is 5.0V
±
0.5V
CAPACITIVE CHARACTERISTICS
Test Condition
Symbol
Parameter
V
CC
(V)
5.0
5.0
5.0
f
IN
= 10MHz
T
A
= 25°C
Min.
Typ.
4
8
18
Max.
Value
-40 to 85°C
Min.
Max.
-55 to 125°C
Min.
Max.
pF
pF
pF
Unit
C
IN
C
OUT
C
PD
Input Capacitance
Output
Capacitance
Power Dissipation
Capacitance (note
1)
1) C
PD
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
CC(opr)
= C
PD
x V
CC
x f
IN
+ I
CC
/n (per circuit)
5/11
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