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PDF MC74ACT378 Data sheet ( Hoja de datos )
| Número de pieza | MC74ACT378 | |
| Descripción | PARALLEL D REGISTER WITH ENABLE | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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MC74AC378
MC74ACT378
Parallel D Register with Enable
The MC74AC378/74ACT378 is a 6-bit register with a buffered common Enable.
This device is similar to the MC74AC174/74ACT174, but with common Enable
rather than common Master Reset.
• 6-Bit High-Speed Parallel Register
• Positive Edge-Triggered D-Type Inputs
• Fully Buffered Common Clock and Enable Inputs
• Outputs Source/Sink 24 mA
• ′ACT378 Has TTL Compatible Inputs
VCC Q5 D5 D4 Q4 D3 Q3 CP
16 15 14 13 12 11 10 9
12345678
E Q0 D0 D1 Q1 D2 Q2 GND
PIN NAMES
E
D0–D5
CP
Q0–Q5
Enable Input
Data Inputs
Clock Pulse Input
Outputs
TRUTH TABLE
Inputs
Outputs
E CP Dn
Qn
H X No Change
L HH
L LL
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
= LOW-to-HIGH Transition
PARALLEL
D REGISTER
WITH ENABLE
N SUFFIX
CASE 648-08
PLASTIC
D SUFFIX
CASE 751B-05
PLASTIC
LOGIC SYMBOL
E D0 D1 D2 D3 D4 D5
CP
Q0 Q1 Q2 Q3 Q4 Q5
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FACT DATA
5-1
1 page  
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MC74AC378 MC74ACT378
DC CHARACTERISTICS
74ACT
74ACT
Symbol
Parameter
VCC
(V)
TA = +25°C
TA =
–40°C to +85°C
Unit
Conditions
Typ Guaranteed Limits
VIH
VIL
VOH
Minimum High Level
Input Voltage
Maximum Low Level
Input Voltage
Minimum High Level
Output Voltage
4.5 1.5 2.0
5.5 1.5 2.0
4.5 1.5 0.8
5.5 1.5 0.8
4.5 4.49 4.4
5.5 5.49 5.4
2.0
2.0
0.8
0.8
4.4
5.4
V
VOUT = 0.1 V
or VCC – 0.1 V
V
VOUT = 0.1 V
or VCC – 0.1 V
V IOUT = –50 µA
VOL
Maximum Low Level
Output Voltage
4.5 3.86
5.5 4.86
4.5 0.001 0.1
5.5 0.001 0.1
3.76
4.76
0.1
0.1
*VIN = VIL or VIH
V
IOH
–24 mA
–24 mA
V IOUT = 50 µA
IIN Maximum Input
Leakage Current
*VIN = VIL or VIH
4.5
5.5
0.36 0.44
0.36 0.44
V
IOL
24 mA
24 mA
5.5
±0.1 ±1.0
µA VI = VCC, GND
∆ICCT
IOLD
IOHD
ICC
Additional Max. ICC/Input
†Minimum Dynamic
Output Current
Maximum Quiescent
Supply Current
5.5 0.6
5.5
5.5
5.5 8.0
1.5
75
–75
80
mA VI = VCC – 2.1 V
mA VOLD = 1.65 V Max
mA VOHD = 3.85 V Min
µA VIN = VCC or GND
* All outputs loaded; thresholds on input associated with output under test.
† Maximum test duration 2.0 ms, one output loaded at a time.
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
74ACT
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
fmax
Maximum Clock
Frequency
tPLH
Propagation Delay
CP to On
tPHL
Propagation Delay
CP to On
* Voltage Range 5.0 V is 5.0 V ±0.5 V.
Min Typ Max
5.0 140
5.0 2.0
10
5.0 2.0
11
74ACT
TA = –40°C
to +85°C
CL = 50 pF
Min Max
120
1.5 11
1.5 12
Unit
MHz
ns
ns
Fig.
No.
3-3
3-6
3-6
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FACT DATA
5-5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet MC74ACT378.PDF ] | |
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