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DM54S195 の電気的特性と機能

DM54S195のメーカーはNational Semiconductorです、この部品の機能は「4-Bit Parallel Access Shift Registers」です。


製品の詳細 ( Datasheet PDF )

部品番号 DM54S195
部品説明 4-Bit Parallel Access Shift Registers
メーカ National Semiconductor
ロゴ National Semiconductor ロゴ 




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DM54S195 Datasheet, DM54S195 PDF,ピン配置, 機能
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





DM54S195 pdf, ピン配列
Switching Characteristics at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load)
Symbol
Parameter
From (Input)
To (Output)
RL e 280X
CL e 15 pF
CL e 50 pF
Min Max Min Max
Units
fMAX
Maximum Clock
Frequency
70 60 MHz
tPLH Propagation Delay Time Clock to
Low to High Level Output
Any Q
12 15 ns
tPHL Propagation Delay Time Clock to
High to Low Level Output
Any Q
16 5 20 ns
tPHL Propagation Delay Time Clear to
High to Low Level Output
Any Q
18 5 23 ns
Function Table
Inputs
Outputs
Shift
Serial
Parallel
Clear
Load
Clock
J
QA
K ABCD
QB
QC
L X X X X XXXX L L L
uH L
X X abcd a b c
H
H
L
X
X
X
X
X
X
QA0
QB0
QC0
uH H
L H X X X X QA0 QA0 QBn
uH H
L
L XXXX
L
QAn
QBn
uH H
H
H XXXX
H
QAn
QBn
uH H
H L X X X X QAn QAn QBn
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
a b c d e The level of steady state input at A B C or D respectively
QA0 QB0 QC0 QD0 e The level of QA QB QC or QD respectively before the indicated steady state input conditions were established
QAn QBn QCn e The level of QA QB QC respectively before the most recent transition of the clock
QD
L
d
QD0
QCn
QCn
QCn
QCn
Logic Diagram
QD
H
d
QD0
QCn
QCn
QCn
QCn
TL F 6476 – 2
3


3Pages


DM54S195 電子部品, 半導体
Physical Dimensions inches (millimeters) (Continued)
16-Lead Molded Dual-In-Line Package (N)
Order Number DM74S195N
NS Package Number N16E
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL
SEMICONDUCTOR CORPORATION As used herein
1 Life support devices or systems are devices or
systems which (a) are intended for surgical implant
into the body or (b) support or sustain life and whose
failure to perform when properly used in accordance
with instructions for use provided in the labeling can
be reasonably expected to result in a significant injury
to the user
2 A critical component is any component of a life
support device or system whose failure to perform can
be reasonably expected to cause the failure of the life
support device or system or to affect its safety or
effectiveness
National Semiconductor
Corporation
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Arlington TX 76017
Tel 1(800) 272-9959
Fax 1(800) 737-7018
National Semiconductor
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Tel (852) 2737-1600
Fax (852) 2736-9960
National Semiconductor
Japan Ltd
Tel 81-043-299-2309
Fax 81-043-299-2408
National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications

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共有リンク

Link :


部品番号部品説明メーカ
DM54S194

4-Bit Bidirectional Universal Shift Registers

National Semiconductor
National Semiconductor
DM54S195

4-Bit Parallel Access Shift Registers

National Semiconductor
National Semiconductor


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