DM54L93N [NSC]
暂无描述;
| 型号： | DM54L93N |
| 厂家： | 
National Semiconductor |
| 描述： | 暂无描述 计数器 |
| 文件： | 总4页 (文件大小：88K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
June 1989
DM54L93
Decade, Divide-by-12, and Binary Counters
General Description
Features
Y
Typical power dissipation 16 mW
Each of these monolithic counters contains four master-
slave flip-flops and additional gating to provide a divide-by-
two counter and a three-stage binary counter for which the
count cycle length is divide-by-eight.
Y
Count frequency 15 MHz
To use their maximum count length (decade, divide-by-
twelve, or four-bit binary), the B input is connected to the Q
A
output. The input count pulses are applied to input A and the
outputs are as described in the appropriate truth table.
Connection Diagram
Function Tables
COUNT SEQUENCE
(See Note A)
Dual-In-Line Package
Output
Count
Q
Q
Q
Q
D
C
B
A
0
1
L
L
L
L
L
L
L
L
L
H
H
L
H
L
2
3
L
L
H
L
4
L
H
H
H
H
L
5
L
L
H
L
6
L
H
H
L
7
L
H
L
8
H
H
H
H
H
H
H
H
9
L
L
H
L
10
11
12
13
14
15
L
H
H
L
L
H
L
TL/F/6637–1
Order Number DM54L93J or DM54L93W
See NS Package Number J14A or W14B
H
H
H
H
L
H
L
H
H
H
RESET/COUNT TRUTH TABLE (Note B)
Reset Inputs
R0(1) R0(2)
Output
Q
D
Q
Q
Q
A
C
B
H
H
L
L
L
L
L
X
L
COUNT
COUNT
X
Note A: Output Q is connected to input B
A
e
e
e
Low Level, X Don’t Care.
Note B: H
High Level, L
C
1995 National Semiconductor Corporation
TL/F/6637
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
8V
5.5V
Operating Free Air Temperature Range
DM54L
b
b
a
55 C to 125 C
§
§
a
65 C to 150 C
Storage Temperature Range
§
§
Recommended Operating Conditions
DM54L93
Units
Symbol
Parameter
Min
4.5
2
Nom
Max
V
V
V
Supply Voltage
5
5.5
V
V
CC
High Level Input Voltage
Low Level Input Voltage
High Level Output Current
Low Level Output Current
Clock Frequency (Note 5)
Pulse Width (Note 5)
IH
0.7
V
IL
b
I
I
0.2
mA
mA
MHz
OH
OL
2
6
f
t
0
CLK
W
A
90
B
90
ns
Reset
200
200
t
Reset Release time (Note 5)
ns
REL
b
T
A
Free Air Operating Temperature
55
125
C
§
Electrical Characteristics over recommended operating free air temperature (unless otherwise noted)
Typ
Symbol
Parameter
Conditions
Min
Max
Units
(Note 1)
e
CC
e
e
V
High Level Output
Voltage
V
Min, I
OH
Max, V
Max
Min
OH
OL
2.4
3.4
V
V
e
V
IL
IH
e
e
e
e
V
Low Level Output
Voltage
V
V
Min, I
Max
Min
CC
OL
Max, V
IH
0.15
0.3
IL
(Note 4)
@
Input Current Max
e
CC
I
I
I
V
Max
Max
Max
Max
Reset
0.1
0.2
0.2
10
I
e
Input Voltage
V
I
5.5V
A
mA
mA
mA
B
e
2.4V
High Level Input
Current
V
V
Reset
IH
IL
CC
e
I
A
20
B
20
e
0.3V
b
Low Level Input
Current
V
V
Reset
0.18
0.36
0.36
CC
e
I
b
b
A
B
e
I
I
Short Circuit
V
CC
OS
CC
b
b
3
15
5.5
mA
mA
Output Current
(Note 2)
e
Max (Note 3)
Supply Current
V
CC
e
e
25 C.
Note 1: All typicals are at V
5V, T
§
CC
Note 2: Not more than one output should be shorted at a time.
Note 3: I is measured with all outputs open, R0 inputs grounded following momentary connection to 4.5V and all other inputs grounded.
A
CC
Note 4: Q outputs are tested at I
e
max plus the limit value of I for the B input. This permits driving the B input while maintaining full fan-out capability.
IL
A
OL
5V.
e
e
Note 5: T
25 C and V
§
CC
A
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
4 kX, C
L
R
50 pF
Max
From (Input)
To (Output)
L
Symbol
Parameter
Units
Min
f
t
Maximum Clock Frequency
A to Q
6
MHz
ns
MAX
A
D
Propagation Delay Time
Low to High Level Output
PLH
A to Q
400
400
t
Propagation Delay Time
High to Low Level Output
PHL
A to Q
ns
D
Logic Diagram
TL/F/6637–2
The J and K inputs shown without connection are for reference only and are functionally at a high level.
3
Physical Dimensions inches (millimeters)
14-Lead Ceramic Dual-In-Line Package (J)
Order Number DM54L93J
NS Package Number J14A
14-Lead Ceramic Flat Package (W)
Order Number DM54L93W
NS Package Number W14B
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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Corporation
National Semiconductor
Europe
National Semiconductor
Hong Kong Ltd.
National Semiconductor
Japan Ltd.
a
1111 West Bardin Road
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Tel: 1(800) 272-9959
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Fax:
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49) 0-180-530 85 86
@
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