NSC DM9334W-883, DM9334J-883 Datasheet
TL/F/6609
9334/DM9334 8-Bit Addressable Latch
June 1989
9334/DM9334 8-Bit Addressable Latch
General Description
The DM9334 is a high speed 8-bit Addressable Latch designed for general purpose storage applications in digital
systems. It is a multifunctional device capable of storing single line data in eight addressable latches, and being a oneof-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.
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 nonaddressed 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.
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.
When operating the device as an addressable latch, changing more than one bit of the address could impose a transient 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
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/Distributor for specifications.
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 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.
Supply Voltage 7V
Input Voltage 5.5V
Operating Free Air Temperature Range
Military
b
55§Ctoa125§C
Commercial 0
§
toa70§C
Storage Temperature Range
b
65§Ctoa150§C
Note:
The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaranteed. 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.
Recommended Operating Conditions
Symbol Parameter
Military Commercial
Units
Min Nom Max Min Nom Max
V
CC
Supply Voltage 4.5 5 5.5 4.75 5 5.25 V
V
IH
High Level Input Voltage 2 2 V
V
IL
Low Level Input Voltage 0.8 0.8 V
I
OH
High Level Output Current
b
0.8
b
0.8 mA
I
OL
Low Level Output Current 16 16 mA
t
W
ENABLE Pulse Width
19 13 19 13 ns
(Fig. 1) (Note 4)
t
SU
Setup Time Data 1 (Fig. 4) 20 13 20 13
(Note 4)
Data 0 (Fig. 4) 20 14 20 14
ns
Address (Fig. 6)
10 5 10 5
(Note 1)
t
H
Hold Time Data 1 (Fig. 4) 0
b
10 0
b
10
ns
(Note 4)
Data 0 (Fig. 4) 0
b
13 0
b
13
T
A
Free Air Operating Temperature
b
55 125 0 70
§
C
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Symbol Parameter Conditions Min
Typ
Max Units
(Note 2)
V
I
Input Clamp Voltage V
CC
e
Min, I
I
eb
12 mA
b
1.5 V
V
OH
High Level Output V
CC
e
Min, I
OH
e
Max
2.4 3.6 V
Voltage V
IL
e
Max, V
IH
e
Min
V
OL
Low Level Output V
CC
e
Min, I
OL
e
Max
0.2 0.4 V
Voltage V
IH
e
Min, V
IL
e
Max
I
I
Input Current@Max V
CC
e
Max, V
I
e
5.5V
1mA
Input Voltage
I
IH
High Level Input V
CC
e
Max E Input 60
mA
Current V
I
e
2.4V
Others 40
I
IL
Low Level Input V
CC
e
Max E Input
b
2.4
mA
Current V
I
e
0.4V
Others
b
1.6
I
OS
Short Circuit V
CC
e
Max MIL
b
30
b
100
mA
Output Current (Note 3)
COM
b
30
b
100
I
CC
Supply Current V
CC
e
Max 56 86 mA
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.
Note 2: All typicals are at V
CC
e
5V, T
A
e
25§C.
Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 4: T
A
e
25§C and V
CC
e
5V.
2
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