DataSheet26.com

74273 PDF даташит

Спецификация 74273 изготовлена ​​​​«National Semiconductor» и имеет функцию, называемую «8-Bit Register with Clear».

Детали детали

Номер произв 74273
Описание 8-Bit Register with Clear
Производители National Semiconductor
логотип National Semiconductor логотип 

6 Pages
scroll

No Preview Available !

74273 Даташит, Описание, Даташиты
DM54LS273 DM74LS273
8-Bit Register with Clear
General Description
The ’LS273 is a high speed 8-bit register consisting of eight
D-type flip-flops with a common Clock and an asynchronous
active LOW Master Reset This device is supplied in a 20-
pin package featuring 0 3 inch row spacing
Features
Y Edge-triggered
Y 8-bit high speed register
Y Parallel in and out
Y Common clock and master reset
Connection Diagram
Dual-In-Line Package
April 1992
TL F 9825 – 1
Order Number DM54LS273E DM54LS273J
DM54LS273W DM74LS273M or DM74LS273N
See NS Package Number E20A J20A M20B
N20A or W20A
Pin Names
CP
D0 – D7
MR
Q0 – Q7
Description
Clock Pulse Input (Active Rising Edge)
Data Inputs
Asynchronous Master Reset Input
(Active LOW)
Flip-Flop Outputs
C1995 National Semiconductor Corporation TL F 9825
RRD-B30M115 Printed in U S A









No Preview Available !

74273 Даташит, Описание, Даташиты
Absolute Maximum Ratings (Note)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature Range
DM54LS
b55 C to a125 C
DM74LS
0 C to a70 C
Storage Temperature Range
b65 C to a150 C
Note The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran-
teed The device should not be operated at these limits The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation
Recommended Operating Conditions
Symbol
VCC
VIH
VIL
IOH
IOL
TA
ts(H)
ts(L)
th(H)
th(L)
tw(H)
tw(L)
tw(L)
trec
Parameter
Supply Voltage
High Level Input Voltage
Low Level Input Voltage
High Level Output Current
Low Level Output Current
Free Air Operating Temperature
Setup Time HIGH or LOW
Dn to CP
Hold Time HIGH or LOW
Dn to CP
CP Pulse Width HIGH or LOW
MR Pulse Width LOW
Recovery Time
MR to CP
Min
45
2
b55
15
15
5
5
20
20
20
DM54LS273
Nom
Max
5 55
07
b0 4
4
125
15
DM74LS273
Min Nom Max
4 75 5
5 25
2
08
b0 4
8
0 70
15
15
5
5
20
20
20
15
Units
V
V
V
mA
mA
C
ns
ns
ns
ns
ns
Electrical Characteristics
Over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
VI
VOH
Input Clamp Voltage
High Level Output
Voltage
VCC e Min II e b18 mA
VCC e Min IOH e Max
VIL e Max
DM54
DM74
25
27
VOL Low Level Output
Voltage
VCC e Min IOL e Max
VIH e Min
DM54
DM74
IOL e 4 mA VCC e Min
DM74
II
Input Current Max
VCC e Max VI e 7V
Input Voltage
VI e 10V (DM54)
IIH
High Level Input Current
VCC e Max VI e 2 7V
IIL
Low Level Input Current
VCC e Max VI e 0 4V
IOS Short Circuit
Output Current
VCC e Max
(Note 2)
DM54
DM74
b20
b20
ICC Supply Current
VCC e Max
Note 1 All typicals are at VCC e 5V TA e 25 C
Note 2 Not more than one output should be shorted at a time and the duration should not exceed one second
Typ
(Note 1)
34
0 35
0 25
Max
b1 5
04
05
04
01
20
b0 4
b100
b100
27
Units
V
V
V
mA
mA
mA
mA
mA
2









No Preview Available !

74273 Даташит, Описание, Даташиты
Switching Characteristics VCC e a5 0V TA ea25 C
Symbol
Parameter
CL e 15 pF
DM54LS
DM74LS
RL e 2 kX
Min Max Min Max
fmax
tPLH
tPHL
tPLH
Maximum Clock Frequency
30
30
Propagation Delay
CP to Qn
Propagation Delay
MR to Qn
24 24
24 24
27 27
Functional Description
The ’LS273 is an 8-bit parallel register with a common Clock
and common Master Reset When the MR input is LOW the
Q outputs are LOW independent of the other inputs Infor-
mation meeting the setup and hold time requirements of the
D inputs is transferred to the Q outputs on the LOW-to-
HIGH transition of the clock input
Logic Symbol
Truth Table
Inputs
MR CP
LX
HL
HL
Dn
X
H
L
H e HIGH Voltage Level
L e LOW Voltage Level
X e Immaterial
Outputs
Qn
L
H
L
Units
MHz
ns
ns
Logic Diagram
VCC e Pin 20
GND e Pin 10
TL F 9825 – 2
TL F 9825 – 3
3










Скачать PDF:

[ 74273.PDF Даташит ]

Номер в каталогеОписаниеПроизводители
7427Triple 3-Input NOR GateFairchild Semiconductor
Fairchild Semiconductor
74273OCTAL D TYPE FLIP FLOP WITH CLEARSTMicroelectronics
STMicroelectronics
74273Octal D-Type Flip-Flops with ClearFairchild Semiconductor
Fairchild Semiconductor
74273Octal D Flip-Flop with Common Clock and ResetMotorola  Inc
Motorola Inc

Номер в каталоге Описание Производители
TL431

100 мА, регулируемый прецизионный шунтирующий регулятор

Unisonic Technologies
Unisonic Technologies
IRF840

8 А, 500 В, N-канальный МОП-транзистор

Vishay
Vishay
LM317

Линейный стабилизатор напряжения, 1,5 А

STMicroelectronics
STMicroelectronics

DataSheet26.com    |    2020    |

  Контакты    |    Поиск