9334DMQB [NSC]
8-Bit Addressable Latch; 8位可寻址锁存器
| 型号： | 9334DMQB |
| 厂家： | 
National Semiconductor |
| 描述： | 8-Bit Addressable Latch |
| 文件： | 总6页 (文件大小：151K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
June 1989
9334/DM9334 8-Bit Addressable Latch
General Description
The DM9334 is a high speed 8-bit Addressable Latch de-
signed for general purpose storage applications in digital
systems. It is a multifunctional device capable of storing sin-
gle line data in eight addressable latches, and being a one-
of-eight decoder and demultiplexer with active level high
outputs. The device also incorporates an active level low
common clear for resetting all latches, as well as an active
level low enable.
When operating the device as an addressable latch, chang-
ing more than one bit of the address could impose a tran-
sient wrong address. Therefore, this should only be done
while in the memory mode.
The function tables summarize the operation of the product.
Features
Y
Common clear
The DM9334 has four modes of operation which are shown
in the mode selection table. In the addressable latch mode,
data on the data line (D) is written into the addressed latch.
The addressed latch will follow the data input with all non-
addressed latches remaining in their previous states. In the
memory mode, all latches remain in their previous state and
are unaffected by the data or address inputs.
Y
Easily expandable
Y
Random (addressable) data entry
Y
Serial to parallel capability
Y
8 bits of storage/output of each bit available
Y
Active high demultiplexing/decoding capability
Y
Alternate Military/Aerospace device (9334) is available.
Contact a National Semiconductor Sales Office/Distrib-
utor for specifications.
In the one-of-eight decoding or demultiplexing mode, the
addressed output will follow the state of the D input with all
other inputs in the low state. In the clear mode all outputs
are low and unaffected by the address and data inputs.
Connection Diagram
Dual-In-Line Package
TL/F/6609–1
Order Number 9334DMQB, 9334FMQB, DM9334J or DM9334N
See NS Package Number J16A, N16E or W16A
C
1995 National Semiconductor Corporation
TL/F/6609
RRD-B30M105/Printed in U. S. A.
Absolute Maximum Ratings (Note)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Note: The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran-
teed. The device should not be operated at these limits. The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings.
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation.
Supply Voltage
Input Voltage
7V
5.5V
Operating Free Air Temperature Range
Military
Commercial
b
b
a
55 C to 125 C
§
§
a
0 to 70 C
§
§
§
a
65 C to 150 C
Storage Temperature Range
§
Recommended Operating Conditions
Military
Nom
5
Commercial
Symbol
Parameter
Units
Min
4.5
2
Max
Min
4.75
2
Nom
Max
V
V
V
Supply Voltage
5.5
5
5.25
V
V
CC
High Level Input Voltage
Low Level Input Voltage
High Level Output Current
Low Level Output Current
IH
0.8
0.8
V
IL
b
b
I
I
0.8
0.8
mA
mA
OH
OL
16
16
t
ENABLE Pulse Width
(Fig. 1) (Note 4)
W
19
13
19
13
ns
ns
ns
t
SU
Setup Time
(Note 4)
Data 1 (Fig. 4)
20
20
13
14
20
20
13
14
Data 0 (Fig. 4)
Address (Fig. 6)
(Note 1)
10
5
10
5
b
b
b
b
t
H
Hold Time
(Note 4)
Data 1 (Fig. 4)
Data 0 (Fig. 4)
0
0
10
13
0
0
0
10
13
b
T
Free Air Operating Temperature
55
125
70
C
§
A
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Typ
Symbol
Parameter
Conditions
Min
Max
Units
(Note 2)
e
e
e b
e
b
1.5
V
V
Input Clamp Voltage
V
Min, I
Min, I
12 mA
V
V
I
CC
I
High Level Output
Voltage
V
V
Max
Min
OH
CC
OH
2.4
3.6
0.2
e
e
Max, V
IL
IH
e
e
V
OL
Low Level Output
Voltage
V
V
Min, I
Max
CC
OL
0.4
V
e
e
Min, V
Max
IH
IL
@
Input Current Max
e
e
I
I
I
V
Max, V
5.5V
I
CC
1
mA
mA
Input Voltage
e
2.4V
High Level Input
Current
V
V
Max
E Input
Others
E Input
Others
MIL
60
40
IH
CC
e
I
e
0.4V
b
I
I
I
Low Level Input
Current
V
V
Max
2.4
1.6
IL
CC
mA
e
I
b
e
(Note 3)
b
b
b
b
Short Circuit
V
Max
30
30
100
100
OS
CC
mA
mA
Output Current
COM
e
Supply Current
V
Max
56
86
CC
CC
Note 1: The ADDRESS setup time is the time before the negative ENABLE transition that the ADDRESS must be stable so that the correct latch is addressed
without affecting the other latches.
e
e
25 C.
Note 2: All typicals are at V
5V, T
§
Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second.
CC
A
e
e
5V.
Note 4: T
25 C and V
§
A
CC
2
e
e
25 C (See Section 1 for Test Waveforms and Output Load)
Switching Characteristics at V
5V and T
§
CC
A
e
e
L
From (Input)
To (Output)
R
400X, C
15 pF
Max
L
Symbol
Parameter
Units
Min
t
t
t
t
t
t
t
Propagation Delay Time
Low to High Level Output
Enable to
PLH
PHL
PLH
PHL
PLH
PHL
PHL
28
27
35
28
35
35
31
ns
ns
ns
ns
ns
ns
ns
Output, Fig. 1
Propagation Delay Time
High to Low Level Output
Enable to
Output, Fig. 1
Propagation Delay Time
Low to High Level Output
Data to
Output, Fig. 2
Propagation Delay Time
High to Low Level Output
Data to
Output, Fig. 2
Propagation Delay Time
Low to High Level Output
Address to
Output, Fig. 3
Propagation Delay Time
High to Low Level Output
Address to
Output, Fig. 3
Propagation Delay Time
High to Low Level Output
Clear to
Output, Fig. 5
Function Tables
E
C
Mode
L
H
L
H
H
L
Addressable Latch
Memory
Active High Eight
Channel Demultiplexer
Clear
H
L
Inputs
Present Output States
Mode
C
E
D
A0
A1
A2
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
L
H
X
X
X
X
L
L
L
L
L
L
L
L
Clear
L
L
L
L
#
#
#
L
L
L
L
L
#
#
#
L
L
H
L
H
#
L
L
L
L
L
L
#
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
#
#
#
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
L
L
H
Demultiplex
Memory
#
#
#
#
H
H
X
H
H
X
L
L
L
L
L
L
H
H
H
X
X
Q
b
N
1
H
H
H
H
#
#
#
H
H
e
e
e
L
L
L
L
#
#
#
L
L
H
L
H
#
#
#
L
L
L
L
L
L
L
#
L
L
L
L
L
Q
Q
Q
b
N
b
b
b
b
b
b
N
N
1
1
N
N
N
N
1
1
1
1
1
H
Q
Q
Q
Q
H
H
Q
Q
L
b
N
N
1
1
H
Addressable
Latch
b
#
#
#
#
#
H
H
H
H
H
Q
Q
Q
Q
L
b
b
b
b
N
N
1
1
N
1
1
L
H
H
H
N
X
L
Don’t Care Condition
Low Voltage Level
High Voltage Level
H
Q
e
1
Previous Output State
b
N
3
Logic Diagram
9334
TL/F/6609–2
Switching Time Waveforms
TL/F/6609–4
e
e
e
H, A Stable
Other Conditions: E
L, C
Figure 2
TL/F/6609–3
e
e
Stable
Other Conditions: C
H, A
Figure 1
TL/F/6609–6
TL/F/6609–5
e
e
Stable
Other Conditions: C
H, A
e
e
e
L, D H
Other Conditions: E
L, C
Figure 4
Figure 3
TL/F/6609–8
TL/F/6609–7
e
Other Conditions: C
H
e
Other Conditons: E
H
Figure 6
Figure 5
Note: The shaded areas indicate when the inputs are permitted to change for predictable output performance.
4
Physical Dimensions inches (millimeters)
16-Lead Ceramic Dual-In-Line Package (J)
Order Number 9334DMQB or DM9334J
NS Package Number J16A
16-Lead Molded Dual-In-Line Package (N)
Order Number DM9334N
NS Package Number N16E
5
Physical Dimensions inches (millimeters) (Continued)
16-Lead Ceramic Flat Package (W)
Order Number 9334FMQB
NS Package Number W16A
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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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