ST M74HCT574 User Manual
M74HCT574
OCTAL D-TYPE FLIP FLOP
WITH 3 STATE OUTPUT NON INVERTING
■ HIGH SPEED:
f
= 50MHz (TYP.) at VCC = 4.5V
MAX
■ LOW POWER DISSIPATION:
I
= 4µA(MAX.) at TA=25°C
CC
■ COMPAT I B LE WITH TT L OUTPUTS :
V
= 2V (MIN.) VIL = 0.8V (MAX)
IH
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
| = IOL = 6mA (MIN)
OH
■ BALANCED PROPAGATION DELAYS:
t
≅ t
PHL
PLH
■ PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 574
DESCRIPTION
The M74HCT574 is an high speed CMOS OCTAL
D-TYPE FLIP FLOP WITH 3-STATE OUTPUTS
INVERTING fabricated with sub-micron silicon
gate C
2
MOS technology.
This 8 bit D-TYPE FLIP FLOP is con trolled by a
clock input (CK) and an o utpu t enable input (OE
On the positive transition of the clock, the Q
outputs will be set to the logic state that were
setup at the D inputs.
While the OE
input is at low level, the eight outputs
will be in a norm al logic state (high or low logic
level) and while OE
is in high level the outputs will
be in a high impedance state.
ORDER CODES
PACKAGE TUBE T & R
DIP M74HCT574B1R
SOP M74HCT574M1R M74HCT574RM13TR
TSSOP M74HCT574TTR
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 are equipped with protection circuits
against static discharge and transient excess
voltage.
TSSOPDIP SOP
PIN CONNECTION AND IEC LOGIC SYMBOLS
1/11August 2001
M74HCT574
INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
PIN No SYMBOL NAME AND FUNCTION
1OE
2, 3, 4, 5, 6,
7, 8, 9
12, 13, 14,
15, 16, 17,
18, 19
11 CK Clock Input (LOW to
10 GND Ground (0V)
20 V
TRUTH TABLE
INPUTS OUTPUT
to D7 Data Inputs
D0
Q7 to Q0 3 State Outputs
CC
3 State Output Enable
Input (Active LOW)
HIGH, edge triggered)
Positive Supply Voltage
OE
HXXZ
L X NO CHANGE
LLL
LHH
X: Don’t Care
Z: High Impedance
LOGIC DIAGRAM
CK D Q
This log i c diagram has not be used to esti m ate propagation delays
2/11
M74HCT574
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
V
I
I
OK
I
I
or I
CC
P
T
T
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
(*) 500mW at 65
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Value Unit
V
V
V
T
t
r
Supply Voltage
CC
DC Input Voltage -0.5 to VCC + 0.5
I
DC Output Voltage -0.5 to VCC + 0.5
O
DC Input Diode Current
IK
DC Output Diode Current
DC Output Current
O
DC VCC or Ground Current
GND
Power Dissipation
D
Storage Temperature
stg
Lead Temperature (10 sec)
L
°C; derate to 300mW by 10mW/°C from 65°C to 85°C
Supply Voltage
CC
Input Voltage 0 to V
I
Output Voltage 0 to V
O
Operating Temperature
op
, t
Input Rise and Fall Time (VCC = 4.5 to 5.5V)
f
-0.5 to +7 V
± 20 mA
± 20 mA
± 35 mA
± 70 mA
500(*) mW
-65 to +150 °C
300 °C
4.5 to 5.5 V
CC
CC
-55 to 125 °C
0 to 500 ns
V
V
V
V
3/11
M74HCT574
DC SPECIFICATIONS
Symbol Parameter
V
V
V
V
I
I
∆ I
High Level Input
IH
Voltage
Low Level Input
IL
Voltage
High Level Output
OH
Voltage
Low Level Output
OL
Voltage
I
Input Leakage
I
Current
High Impedance
OZ
Output Leakage
Current
Quiescent Supply
CC
Current
Additional Worst
CC
Case Supply
Current
Test Condition Value
T
= 25°C
V
CC
(V)
A
Min. Typ. Max. Min. Max. Min. Max.
4.5
to
2.0 2.0 2.0 V
5.5
4.5
to
0.8 0.8 0.8 V
5.5
4.5
4.5
5.5
5.5
5.5
IO=-20 µA
I
=-6.0 mA
O
IO=20 µA
I
=6.0 mA
O
= VCC or GND
V
I
= VIH or V
V
I
VO = VCC or GND
= VCC or GND
V
I
5.5 Per Input pin
= 0.5V or
V
I
V
= 2.4V
I
4.4 4.5 4.4 4.4
4.18 4.31 4.13 4.10
0.0 0.1 0.1 0.1
0.17 0.26 0.33 0.40
± 0.1 ± 1 ± 1 µA
IL
± 0.5 ± 5 ± 10 µA
2.0 2.9 3.0 mA
Other Inputs at
V
or GND
CC
I
= 0
O
-40 to 85°C -55 to 125°C
Unit
V
V
44080µA
4/11
Loading...