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PDF DM74LS164 Data sheet ( Hoja de datos )
| Número de pieza | DM74LS164 | |
| Descripción | 8-Bit Serial In/Parallel Out Shift Registers | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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June 1989
54LS164 DM54LS164 DM74LS164
8-Bit Serial In Parallel Out Shift Registers
General Description
These 8-bit shift registers feature gated serial inputs and an
asynchronous clear A low logic level at either input inhibits
entry of the new data and resets the first flip-flop to the low
level at the next clock pulse thus providing complete con-
trol over incoming data A high logic level on either input
enables the other input which will then determine the state
of the first flip-flop Data at the serial inputs may be changed
while the clock is high or low but only information meeting
the setup and hold time requirements will be entered Clock-
ing occurs on the low-to-high level transition of the clock
input All inputs are diode-clamped to minimize transmis-
sion-line effects
Features
Y Gated (enable disable) serial inputs
Y Fully buffered clock and serial inputs
Y Asynchronous clear
Y Typical clock frequency 36 MHz
Y Typical power dissipation 80 mW
Y Alternate Military Aerospace device (54LS164) is avail-
able Contact a National Semiconductor Sales Office
Distributor for specifications
Connection Diagram
Function Table
Dual-In-Line Package
Inputs
Outputs
Clear Clock A B QA QB
QH
L
X XX L
L
H L X X QA0 QB0
uH H H H QAn
uH L X L QAn
uH X L L QAn
L
QH0
QGn
QGn
QGn
H e High Level (steady state) L e Low Level (steady state)
X e Don’t Care (any input including transitions)
u e Transition from low to high level
QA0 QB0 QH0 e The level of QA QB or QH respectively before the
indicated steady-state input conditions were established
uQAn QGn e The level of QA or QG before the most recent transition of
the clock indicates a one-bit shift
TL F 6398 – 1
Order Number 54LS164DMQB 54LS164FMQB
54LS164LMQB DM54LS164J DM54LS164W
DM74LS164M or DM74LS164N
See NS Package Number E20A
J14A M14A N14A or W14B
Logic Diagram
C1995 National Semiconductor Corporation TL F 6398
TL F 6398 – 2
RRD-B30M105 Printed in U S A
1 page  
Physical Dimensions inches (millimeters) (Continued)
14-Lead Small Outline Molded Package (M)
Order Number DM74LS164M
NS Package Number M14A
14-Lead Molded Dual-In-Line Package (N)
Order Number DM74LS164N
NS Package Number N14A
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet DM74LS164.PDF ] | |
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