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PDF DM74S195 Data sheet ( Hoja de datos )
| Número de pieza | DM74S195 | |
| Descripción | 4-Bit Parallel Access Shift Registers | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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June 1989
DM54S195 DM74S195 4-Bit Parallel Access
Shift Registers
General Description
These 4-bit registers feature parallel inputs parallel outputs
J-K serial inputs shift load control input and a direct over-
riding clear All inputs are buffered to lower the input drive
requirements The registers have two modes of operation
Parallel (broadside) load
Shift (in the direction QA toward QD)
Parallel loading is accomplished by applying the four bits of
data and taking the shift load control input low The data is
loaded into the associated flip-flop and appears at the out-
puts after the positive transition of the clock input During
loading serial data flow is inhibited
Shifting is accomplished synchronously when the shift load
control input is high Serial data for this mode is entered at
the J-K inputs These inputs permit the first stage to perform
as a J-K D or T-type flip-flop as shown in the truth table
The high-performance S195 with a 105 MHz typical shift
frequency is particularly attractive for very high-speed data
processing systems In most cases existing systems can be
upgraded merely by using this Schottky-clamped shift regis-
ter
Features
Y Synchronous parallel load
Y Positive-edge-triggered clocking
Y Parallel inputs and outputs from each flip-flop
Y Direct overriding clear
Y J and K inputs to first stage
Y Complementary outputs from last stage
Y For use in high-performance
accumulators processors
serial-to-parallel parallel-to-serial converters
Y Typical clock frequency 105 MHz
Y Typical power dissipation 350 mW
Connection Diagram
Dual-In-Line Package
Order Number DM54S195J or DM74S195N
See NS Package Number J16A or N16E
TL F 6476 – 1
C1995 National Semiconductor Corporation TL F 6476
RRD-B30M105 Printed in U S A
1 page  
Physical Dimensions inches (millimeters)
16-Lead Ceramic Dual-In-Line Package (J)
Order Number DM54S195J
NS Package Number J16A
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet DM74S195.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| DM74S195 | 4-Bit Parallel Access Shift Registers | National Semiconductor |
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