NSC CD4724BMJ-MIL Datasheet
TL/F/6003
CD4723BM/CD4723BC Dual 4-Bit Addressable Latch
CD4724BM/CD4724BC 8-Bit Addressable Latch
February 1988
CD4723BM/CD4723BC Dual 4-Bit Addressable Latch
CD4724BM/CD4724BC 8-Bit Addressable Latch
General Description
The CD4723B is a dual 4-bit addressable latch with common control inputs, including two address inputs (A0, A1),
an active low enable input (E
), and an active high clear input
(CL). Each latch has a data input (D) and four outputs (Q0 –
Q3). The CD4724B is an 8-bit addressable latch with three
address inputs (A0 –A2), an active low enable input (E
), active high clear input (CL), a data input (D) and eight outputs
(Q0–Q7).
Data is entered into a particular bit in the latch when that is
addressed by the address inputs and the enable (E
) is low.
Data entry is inhibited when enable (E
) is high.
When clear (CL) and enable (E) are high, all outputs are low.
When clear (CL) is high and enable (E
) is low, the channel
demultiplexing occurs. The bit that is addressed has an active output which follows the data input while all unaddressed bits are held low. When operating in the address-
able latch mode (E
eCLe
low), 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 (E
e
high, CLelow).
Features
Y
Wide supply voltage range 3.0V to 15V
Y
High noise immunity 0.45 VDD(typ.)
Y
Low power TTL fan out of 2 driving 74L
compatibility or 1 driving 74LS
Y
Serial to parallel capability
Y
Storage register capability
Y
Random (addressable) data entry
Y
Active high demultiplexing capability
Y
Common active high clear
Connection Diagrams
CD4723B
Dual-In-Line Package
TL/F/6003– 1
Top View
CD4724B
Dual-In-Line Package
TL/F/6003– 2
Top View
Order Number CD4723B or
CD4724B
Truth Table
Mode Selection
E CL
Addressed Unaddressed
Mode
Latch Latch
L L Follows Data Holds Previous Data Addressable Latch
H L Hold Previous Data Holds Previous Data Memory
L H Follows Data Reset to ‘‘0’’ Demultiplexer
H H Reset to ‘0’’ Reset to ‘‘0’’ Clear
C
1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.
Absolute Maximum Ratings (Notes1&2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
DC Supply Voltage (V
DD
)
b
0.5V toa18 V
DC
Input Voltage (VIN)
b
0.5V to V
DD
a
0.5 V
DC
Storage Temperature (TS)
b
65§Ctoa150§C
Power Dissipation (PD)
Dual-In-Line 700 mW
Small Outline 500 mW
Lead Temperature (T
L
)
(Soldering, 10 seconds) 260
§
C
Recommended Operating
Conditions
(Note 2)
DC Supply Voltage (VDD) 3.0V to 15 V
DC
Input Voltage (VIN) 0VtoVDDV
DC
Operating Temperature Range (TA)
CD4723BM/CD4724BM
b
55§Ctoa125§C
CD4723BC/CD4724BC
b
40§Ctoa85§C
DC Electrical Characteristics CD4723BM/CD4724BM (Note 2)
Symbol Parameter Conditions
b
55§C
a
25§C
a
125§C
Units
Min Max Min Typ Max Min Max
I
DD
Quiescent Device V
DD
e
5V 5.0 0.02 5.0 150 m A
Current V
DD
e
10V 10 0.02 10 300 m A
V
DD
e
15V 20 0.02 20 600 m A
V
OL
Low Level
l
I
O
l
s
1 mA
Output Voltage V
DD
e
5V 0.05 0 0.05 0.05 V
V
DD
e
10V 0.05 0 0.05 0.05 V
V
DD
e
15V 0.05 0 0.05 0.05 V
V
OH
High Level
l
I
O
l
s
1 mA
Output Voltage V
DD
e
5V 4.95 4.95 5.0 4.95 V
V
DD
e
10V 9.95 9.95 10 9.95 V
V
DD
e
15V 14.95 14.95 15 14.95 V
V
IL
Low Level V
DD
e
5V, V
O
e
0.5V or 4.5V 1.5 2.25 1.5 1.5 V
Input Voltage V
DD
e
10V, V
O
e
1V or 9V 3.0 4.5 3.0 3.0 V
V
DD
e
15V, V
O
e
1.5V or 13.5V 4.0 6.75 4.0 4.0 V
V
IH
High Level V
DD
e
5V, V
O
e
0.5V or 4.5V 3.5 3.5 2.75 3.5 V
Input Voltage V
DD
e
10V, V
O
e
1V or 9V 7.0 7.0 5.5 7.0 V
V
DD
e
15V, V
O
e
1.5V or 13.5V 11.0 11.0 8.25 11.0 V
I
OL
Low Level Output V
DD
e
5V, V
O
e
0.4V 0.64 0.51 0.88 0.36 mA
Current V
DD
e
10V, V
O
e
0.5V 1.6 1.3 2.25 0.9 mA
(Note 3) V
DD
e
15V, V
O
e
1.5V 4.2 3.4 8.8 2.4 mA
I
OH
High Level Output V
DD
e
5V, V
O
e
4.6V
b
0.64
b
0.51b0.88
b
0.36 mA
Current V
DD
e
10V, V
O
e
9.5V
b
1.6
b
1.3b2.25
b
0.9 mA
(Note 3) V
DD
e
15V, V
O
e
13.5V
b
4.2
b
3.4b8.8
b
2.4 mA
I
IN
Input Current V
DD
e
15V, V
IN
e
0V
b
0.1
b
10
b
5
b
0.1
b
1.0 mA
V
DD
e
15V, V
IN
e
15V 0.1 10
b
5
0.1 1.0 mA
Note 1: ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed; they are not meant to imply that the devices
should be operated at these limits. The tables of ‘‘Recommended Operating Conditions’’ and Electrical Characteristics’’ provide conditions for actual device
operation.
Note 2: V
SS
e
0V unless otherwise specified.
Note 3: I
OL
and IOHare tested one output at a time.
2
DC Electrical Characteristics CD4723BC/CD4724BC (Note 2)
Symbol Parameter Conditions
b
40§C
a
25§C
a
85§C
Units
Min Max Min Typ Max Min Max
I
DD
Quiescent Device V
DD
e
5V 20 0.02 20 150 mA
Current V
DD
e
10V 40 0.02 40 300 mA
V
DD
e
15V 80 0.02 80 600 mA
V
OL
Low Level
l
I
O
l
s
1 mA
Output Voltage V
DD
e
5V 0.05 0 0.05 0.05 V
V
DD
e
10V 0.05 0 0.05 0.05 V
V
DD
e
15V 0.05 0 0.05 0.05 V
V
OH
High Level
l
I
O
l
s
1 mA
Output Voltage V
DD
e
5V 4.95 4.95 5.0 4.95 V
V
DD
e
10V 9.95 9.95 10 9.95 V
V
DD
e
15V 14.95 14.95 15 14.95 V
V
IL
Low Level V
DD
e
5V, V
O
e
0.5V or 4.5V 1.5 2.25 1.5 1.5 V
Input Voltage V
DD
e
10V, V
O
e
1V or 9V 3.0 4.5 3.0 3.0 V
V
DD
e
15V, V
O
e
1.5V or 13.5V 4.0 6.75 4.0 4.0 V
V
IH
High Level V
DD
e
5V, V
O
e
0.5V or 4.5V 3.5 3.5 2.75 3.5 V
Input Voltage V
DD
e
10V, V
O
e
1V or 9V 7.0 7.0 5.5 7.0 V
V
DD
e
15V, V
O
e
1.5V or 13.5V 11.0 11.0 8.25 11.0 V
I
OL
Low Level Output V
DD
e
5V, V
O
e
0.4V 0.52 0.44 0.88 0.36 mA
Current V
DD
e
10V, V
O
e
0.5V 1.3 1.1 2.25 0.9 mA
(Note 3) V
DD
e
15V, V
O
e
1.5V 3.6 3.0 8.8 2.4 mA
I
OH
High Level Output V
DD
e
5V, V
O
e
4.6V
b
0.52
b
0.44b0.88
b
0.36 mA
Current V
DD
e
10V, V
O
e
9.5V
b
1.3
b
1.1b2.25
b
0.9 mA
(Note 3) V
DD
e
15V, V
O
e
13.5V
b
3.6
b
3.0b8.8
b
2.4 mA
I
IN
Input Current V
DD
e
15V, V
IN
e
0V
b
0.30
b
10
b
5
b
0.30
b
1.0 mA
V
DD
e
15V, V
IN
e
15V 0.30 10
b
5
0.30 1.0 mA
Note 1: ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed; they are not meant to imply that the devices
should be operated at these limits. The tables of ‘‘Recommended Operating Conditions’’ and Electrical Characteristics’’ provide conditions for actual device
operation.
Note 2: V
SS
e
0V unless otherwise specified.
Note 3: I
OL
and IOHare tested one output at a time.
3
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