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PDF 54AC574 Data sheet ( Hoja de datos )
| Número de pieza | 54AC574 | |
| Descripción | Octal D-Type Flip-Flop | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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September 1998
54AC574 • 54ACT574
Octal D-Type Flip-Flop with TRI-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 common
Output Enable (OE). The information presented to the D in-
puts 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
n ICC and IOZ reduced by 50%
n Inputs and outputs on opposite sides of package
allowing easy interface with microprocessors
n Useful as input or output port for microprocessors
n Functionally identical to ’AC/’ACT374
n TRI-STATE outputs for bus-oriented applications
n Outputs source/sink 24 mA
n ’ACT574 has TTL-compatible inputs
n Standard Microcircuit Drawing (SMD)
— ’ACT574: 5962-89601
Logic Symbols
IEEE/IEC
DS100256-1
DS100256-4
Pin Names
D0– D7
CP
OE
O0– O7
Description
Data Inputs
Clock Pulse Input
TRI-STATE Output Enable Input
TRI-STATE Outputs
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
FACT™ is a trademark of Fairchild Semiconductor Corporation.
© 1998 National Semiconductor Corporation DS100256
www.national.com
1 page  
DC Characteristics for ’AC Family Devices (Continued)
Symbol
IOLD
IOHD
ICC
Parameter
(Note 3) Minimum
Dynamic Output
Current
Maximum Quiescent
Supply Current
VCC
(V)
5.5
5.5
5.5
54AC
TA =
−55˚C to +125˚C
Guaranteed Limits
50
−50
80.0
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.
DC Characteristics for ’ACT Family Devices
Symbol
Parameter
VIH Minimum High
Level Input
Voltage
VIL Maximum Low
Level Input
Voltage
VOH Minimum High
Level
54ACT
VCC
TA =
(V) −55˚C to +125˚C
Guaranteed Limits
4.5 2.0
5.5 2.0
4.5 0.8
5.5 0.8
4.5 4.4
5.5 5.4
Units
mA
mA
µA
Units
V
V
V
VOL Maximum Low
Level Output
Voltage
4.5
5.5
4.5
5.5
3.70
4.70
0.1
0.1
IIN
IOZ
ICCT
IOLD
IOHD
ICC
Maximum Input
Leakage Current
Maximum
TRI-STATE
Leakage Current
Maximum ICC/Input
(Note 5) Minimum
Dynamic Output
Current
Maximum Quiescent
Supply Current
4.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
Note 4: All outputs loaded; thresholds on input associated with output under test.
Note 5: Maximum test duration 2.0 ms, one output loaded at a time.
0.50
0.50
±1.0
±5.0
1.6
50
−50
80.0
V
V
V
µA
µA
mA
mA
mA
µA
Conditions
VOLD = 1.65V
VOHD = 3.85V
VIN = VCC
or GND
Conditions
VOUT = 0.1V
or VCC − 0.1V
VOUT = 0.1V
or VCC − 0.1V
IOUT = −50 µA
(Note 4)
VIN = VIL or VIH
IOH −24 mA
−24 mA
IOUT = 50 µA
(Note 4)
VIN = VIL or VIH
IOL 24 mA
24 mA
VI = VCC, GND
VI = VIL, VIH
VO = VCC, GND
VI = VCC − 2.1V
VOLD = 1.65V
VOHD = 3.85V
VIN = VCC
or GND
5 www.national.com
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet 54AC574.PDF ] | |
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