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9314DMQB の電気的特性と機能

9314DMQBのメーカーはNational Semiconductorです、この部品の機能は「Quad Latch」です。


製品の詳細 ( Datasheet PDF )

部品番号 9314DMQB
部品説明 Quad Latch
メーカ National Semiconductor
ロゴ National Semiconductor ロゴ 




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9314DMQB Datasheet, 9314DMQB PDF,ピン配置, 機能
9314 DM9314 Quad Latch
General Description
The ’9314 is a multifunctional 4-bit latch designed for gener-
al purpose storage applications in high speed digital sys-
tems All outputs have active pull-up circuitry to provide high
capacitance drive and to provide low impedance in both
logic states for good noise immunity
Connection Diagram
Logic Symbol
Dual-In-Line Package
June 1989
TL F 9788 – 1
Order Number 9314DMQB 9314FMQB or DM9314N
See NS Package Number J16A N16E or W16A
VCC e Pin 16
GND e Pin 8
Pin Names
E
D0 – D3
S0 – S3
MR
Q0 – Q3
Description
Enable Input (Active LOW)
Data Inputs
Set Inputs (Active LOW)
Master Reset Input (Active LOW)
Latch Outputs
TL F 9788 – 2
C1995 National Semiconductor Corporation TL F 9788
RRD-B30M115 Printed in U S A

1 Page





9314DMQB pdf, ピン配列
Switching Characteristics VCC e a5 0V TA e a25 C (See Section 1 for waveforms and load configurations)
Symbol
Parameter
CL e 15 pF
Min Max
Units
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
Propagation Delay
E to Qn
Propagation Delay
Dn to Qn
Propagation Delay
MR to Qn
Propagation Delay
Sn to Qn
24
24
ns
12
24 ns
18 ns
24 ns
Functional Description
The ’9314 consists of four latches with a common active
LOW Enable input and active LOW Master Reset input
When the Enable goes HIGH data present in the latches is
stored and the state of the latch is no longer affected by the
Sn and Dn inputs The Master Reset when activated over-
rides all other input conditions forcing all latch outputs LOW
Each of the four latches can be operated in one of two
modes
D-TYPE LATCH For D-type operation the S input of a latch
is held LOW While the common Enable is active the latch
output follows the D input Information present at the latch
output is stored in the latch when the Enable goes HIGH
SET RESET LATCH During set reset operation when the
common Enable is LOW a latch is reset by a LOW on the D
input and can be set by a LOW on the S input if the D input
is HIGH If both S and D inputs are LOW the D input will
dominate and the latch will be reset When the Enable goes
HIGH the latch remains in the last state prior to disable-
ment The two modes of latch operation are shown in the
Truth Table
Truth Table
MR E D S
H LLL
H LHL
H HXX
H LLL
H LHL
H LLH
H LHH
H HXX
L XXX
H e HIGH Voltage Level
L e LOW Voltage Level
X e Immaterial
Qnb1 e Previous Output State
Qn e Present Output State
Qn
L
H
Qnb1
L
H
L
Qnb1
Qnb1
L
Operation
D Mode
R S Mode
Reset
3


3Pages


9314DMQB 電子部品, 半導体
Physical Dimensions inches (millimeters) (Continued)
16-Lead Ceramic Flat Package (W)
Order Number 9314FMQB
NS Package Number W16A
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
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Fax (852) 2736-9960
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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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部品番号部品説明メーカ
9314DMQB

Quad Latch

National Semiconductor
National Semiconductor


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