|
|
PDF MC74ACT194 Data sheet ( Hoja de datos )
| Número de pieza | MC74ACT194 | |
| Descripción | 4-Bit Bidirectional Universal Shift Register | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MC74ACT194 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
4ĆBit Bidirectional
Universal Shift Register
The MC74AC194/74ACT194 is a high-speed 4-bit bidirectional universal shift
register. As a high-speed multifunctional, sequential building block, it is useful in
a wide variety of applications. It may be used in serial-serial, shift left, shift right,
serial-parallel, parallel-serial, and parallel-parallel data register transfers. The
′AC/ACT194 is similar in operation to the ′AS195 universal shift register, with
added features of shift left without external connections and hold (do nothing)
modes of operation.
• Typical Shift Frequency of 150 MHz
• Asynchronous Master Reset
• Hold (Do Nothing) Mode
• Fully Synchronous Serial or Parallel Data Transfers
FUNCTIONAL DESCRIPTION
The MC74AC/74ACT194 contains four edge-triggered D flip-flops and the
necessary interstage logic to synchronously perform shift right, shift left, parallel
load and hold operations. Signals applied to the Select (S0, S1) inputs
determine the type of operation, as shown in the Mode Select Table. Signals
on the Select, Parallel data (P0–P3) and Serial data (DSR, DSL) inputs can
change when the clock is in either state, provided only that the recommended
setup and hold times, with respect to the clock rising edge, are observed. A
LOW signal on Master Reset (MR) overrides all other inputs and forces the
outputs LOW.
MODE SELECT TABLE
Operating
Mode
Reset
MR S1
LX
Inputs
S0 DSR
XX
DSL Pn
XX
Outputs
Q0 Q1 Q2 Q3
LLLL
Hold
Hl
l
Shift Left
Hh
Hh
l
l
Shift Right
Hl h
Hl h
Parallel Load H h h
X X X q0 q1 q2 q3
X l X q1 q2 q3 L
X h X q1 q2 q3 H
l X X L q0 q1 q2
h X X H q0 q1 q2
X X pn p0 p1 p2 p3
l = LOW voltage level one setup time prior to the LOW-to-HIGH clock transition.
h = HIGH voltage level one setup time prior to the LOW-to-HIGH clock transition.
Pn (qn) = Lower case letters indicate the state of the referenced input (or output) one setup
time prior to the LOW-to-HIGH clock transition.
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
FACT DATA
5-1
MC74AC194
MC74ACT194
4-BIT BIDIRECTIONAL
UNIVERSAL SHIFT
REGISTER
N SUFFIX
CASE 648-08
PLASTIC
D SUFFIX
CASE 751B-05
PLASTIC
MR 1
16 VCC
DSR 2
15 Q0
P0 3
P1 4
14 Q1
13 Q2
P2 5
12 Q3
P3 6
11 CP
7
DSL
8
GND
10 S1
9 S0
2 34 56 7
9 S0DSR P0 P1 P2 P3 DSL
10 S1
11 CP MR Q0 Q1 Q2 Q3
1 15 14 13 12
1 page  
MC74AC194 MC74ACT194
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 Input
Frequency
tPLH
Propagation Delay
CP to Q
tPHL
Propagation Delay
CP to Q
tPHL
Propagation Delay
MR to Q
* Voltage Range 5.0 V is 5.0 V ±0.5 V.
Min Typ Max
5.0 210
5.0 2.0
13.0
5.0 2.0
12.5
5.0 2.0
12.5
74ACT
TA = –40°C
to +85°C
CL = 50 pF
Min Max
150
1.5 13.5
1.5 14.0
1.5 14.0
Unit
MHz
ns
ns
ns
Fig.
No.
3-3
3-6
3-6
3-6
FACT DATA
5-5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet MC74ACT194.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MC74ACT194 | 4-Bit Bidirectional Universal Shift Register | Motorola Semiconductors |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |