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DM74LS90M

Datasheet DM74LS93N, DM74LS93M, DM74LS90N, DM74LS90M Datasheet (NSC)

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Page 1
DM74LS90/DM74LS93 Decade and Binary Counters
General Description
Each of these monolithic counters contains four master­slave flip-flops and additional gating to provide a divide-by­two counter and a three-stage binary counter for which the count cycle length is divide-by-five for the ’LS90 and divide­by-eight for the ’LS93.
All of these counters have a gated zero reset and the LS90 also has gated set-to-nine inputs for use in BCD nine’s com­plement applications.
To use their maximum count length (decade or four bit bina­ry), the B input is connected to the Q
Connection Diagrams (Dual-In-Line Packages)
output. The input
A
June 1989
count pulses are applied to input A and the outputs are as described in the appropriate truth table. A symmetrical di­vide-by-ten count can be obtained from the ’LS90 counters by connecting the Q input count to the B input which gives a divide-by-ten square wave at output Q
output to the A input and applying the
D
.
A
Features
Y
Typical power dissipation 45 mW
Y
Count frequency 42 MHz
DM74LS90/DM74LS93 Decade and Binary Counters
Order Number DM74LS90M or DM74LS90N
See NS Package Number M14A or N14A
C
1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.
TL/F/6381
TL/F/6381– 1
Order Number DM74LS93M or DM74LS93N
See NS Package Number M14A or N14A
TL/F/6381– 2
Page 2
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 (Reset) 7V
Operating Free Air Temperature Range
DM74LS 0
Storage Temperature Range
Ctoa70§C
§
b
65§Ctoa150§C
Recommended Operating Conditions
Symbol Parameter
V
CC
V
IH
V
IL
I
OH
I
OL
f
CLK
f
CLK
t
W
t
W
t
REL
t
REL
T
A
e
Note 1: C
L
e
Note 2: C
L
Supply Voltage 4.75 5 5.25 V
High Level Input Voltage 2 V
Low Level Input Voltage 0.8 V
High Level Output Current
Low Level Output Current 8 mA
Clock Frequency (Note 1) A to Q
BtoQ
Clock Frequency (Note 2) A to Q
BtoQ
Pulse Width (Note 1) A 15
B30 ns
Reset 15
Pulse Width (Note 2) A 25
B50 ns
Reset 25
Reset Release Time (Note 1) 25 ns
Reset Release Time (Note 2) 35 ns
Free Air Operating Temperature 0 70
15 pF, R
50 pF, R
e
L
e
L
2kX,T
2kX,T
e
A
e
A
25§C and V
25§C and V
e
5V.
CC
e
5V.
CC
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.
DM74LS90
Min Nom Max
b
0.4 mA
A
B
A
B
032
016
020
010
Units
MHz
MHz
C
§
’LS90 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol Parameter Conditions Min
e
V
I
V
OH
V
OL
I
I
Input Clamp Voltage V
High Level Output V Voltage V
Low Level Output V Voltage V
Input Current@Max V Input Voltage
CC
CC
e
IL
CC
e
IL
(Note 4)
e
I
OL
CC
V
CC
e
V
I
eb
Min, I
e
Min, I
Max, V
e
Min, I
Max, V
4 mA, V
e
Max, V
e
Max A 0.2 mA
5.5V
18 mA
I
e
Max
OH
e
Min
IH
e
Max
OL
e
Min 0.35 0.5
IH
e
Min 0.25 0.4
CC
e
7V Reset 0.1
I
2.7 3.4 V
B 0.4
2
Typ
(Note 1)
Max Units
b
1.5 V
V
Page 3
’LS90 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted) (Continued)
Symbol Parameter Conditions Min
I
IH
High Level Input V Current
CC
e
Max, V
e
2.7V Reset 20
I
A40mA
B80
I
IL
Low Level Input V Current
CC
e
Max, V
e
0.4V Reset
I
A
B
I
OS
I
CC
Note 1: All typicals are at V
Note 2: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 3: I
Note 4: Q
Short Circuit V Output Current
Supply Current V
e
e
5V, T
CC
is measured with all outputs open, both RO inputs grounded following momentary connection to 4.5V and all other inputs grounded.
CC
outputs are tested at I
A
25§C.
A
e
Max plus the limit value of IILfor the B input. This permits driving the B input while maintaining full fan-out capability.
OL
e
Max (Note 2)
CC
e
Max (Note 3) 9 15 mA
CC
b
20
’LS90 Switching Characteristics
e
at V
CC
5V and T
Symbol Parameter
f
MAX
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PHL
e
25§C (See Section 1 for Test Waveforms and Output Load)
A
From (Input)
To (Output)
Maximum Clock A to Q Frequency
Propagation Delay Time Low to High Level Output
Propagation Delay Time High to Low Level Output
Propagation Delay Time Low to High Level Output
Propagation Delay Time High to Low Level Output
Propagation Delay Time Low to High Level Output
Propagation Delay Time High to Low Level Output
Propagation Delay Time Low to High Level Output
Propagation Delay Time High to Low Level Output
Propagation Delay Time Low to High Level Output
Propagation Delay Time High to Low Level Output
BtoQ
AtoQ
AtoQ
AtoQ
AtoQ
BtoQ
BtoQ
BtoQ
BtoQ
BtoQ
BtoQ
A
B
A
A
D
D
B
B
C
C
D
D
Propagation Delay Time SET-9 to Low to High Level Output QA,Q
D
Propagation Delay Time SET-9 to High to Low Level Output Q
B,QC
Propagation Delay Time SET-0 to High to Low Level Output Any Q
e
R
2kX
e
C
L
L
15 pF C
Min Max Min Max
32 20
16 10
16 20 ns
18 24 ns
48 52 ns
50 60 ns
16 23 ns
21 30 ns
32 37 ns
35 44 ns
32 36 ns
35 44 ns
30 35 ns
40 48 ns
40 52 ns
Typ
(Note 1)
L
Max Units
b
0.4
b
2.4 mA
b
3.2
b
100 mA
e
50 pF Units
MHz
3
Page 4
Recommended Operating Conditions
Symbol Parameter
V
CC
V
IH
V
IL
I
OH
I
OL
f
CLK
f
CLK
t
W
t
W
t
REL
t
REL
T
A
Note 1: C
L
Note 2: C
L
Supply Voltage 4.75 5 5.25 V
High Level Input Voltage 2 V
Low Level Input Voltage 0.8 V
High Level Output Current
Low Level Output Current 8 mA
Clock Frequency (Note 1) A to Q
Clock Frequency (Note 2) A to Q
BtoQ
BtoQ
A
B
A
B
Pulse Width (Note 1) A 15
B30 ns
Reset 15
Pulse Width (Note 2) A 25
B50 ns
Reset 25
Reset Release Time (Note 1) 25 ns
Reset Release Time (Note 2) 35 ns
Free Air Operating Temperature 0 70
e
e
15 pF, R
50 pF, R
L
L
e
e
2kX,T
2kX,T
e
A
e
A
25§C and V
25§C and V
e
5V.
CC
e
5V.
CC
DM74LS93
Units
Min Nom Max
b
0.4 mA
032
016
MHz
020
010
C
§
’LS93 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol Parameter Conditions Min
e
V
I
V
OH
V
OL
I
I
I
IH
Input Clamp Voltage V
High Level Output V Voltage V
Low Level Output V Voltage V
Input Current@Max V Input Voltage
High Level Input V Current V
CC
CC
e
IL
CC
e
IL
(Note 4)
e
I
OL
CC
V
CC
e
V
I
CC
e
I
eb
Min, I
e
Min, I
Max, V
e
Min, I
Max, V
4 mA, V
e
Max, V
e
Max A 0.2 mA
5.5V
e
Max Reset 20
2.7V
18 mA
I
e
Max
OH
e
Min
IH
e
Max
OL
e
Min 0.35 0.5 V
IH
e
Min 0.25 0.4
CC
e
7V Reset 0.1
I
2.7 3.4 V
B 0.4
A40mA
B80
4
Typ
(Note 1)
Max Units
b
1.5 V
Page 5
’LS93 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted) (Continued)
Symbol Parameter Conditions Min
I
IL
I
OS
I
CC
Note 1: All typicals are at V
Note 2: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 3: I
Note 4: Q
’LS93 Switching Characteristics
at V
CC
Low Level Input V Current
Short Circuit V Output Current
Supply Current V
e
e
5V, T
CC
is measured with all outputs open, both RO inputs grounded following momentary connection to 4.5V and all other inputs grounded.
CC
outputs are tested at I
A
e
5V and T
e
25§C (See Section 1 for Test Waveforms and Output Load)
A
25§C.
A
e
max plus the limit value of IILfor the B input. This permits driving the B input while maintaining full fan-out capability.
OL
CC
CC
CC
e
e
e
Symbol Parameter
f
t
t
t
t
t
t
t
t
t
t
t
MAX
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
PHL
Maximum Clock A to Q Frequency
Propagation Delay Time Low to High Level Output
Propagation Delay Time High to Low Level Output
Propagation Delay Time Low to High Level Output
Propagation Delay Time High to Low Level Output
Propagation Delay Time Low to High Level Output
Propagation Delay Time High to Low Level Output
Propagation Delay Time Low to High Level Output
Propagation Delay Time High to Low Level Output
Propagation Delay Time Low to High Level Output
Propagation Delay Time High to Low Level Output
Propagation Delay Time SET-0 to High to Low Level Output Any Q
e
Max, V
0.4V Reset
I
A
B
Max (Note 2)
b
20
Max (Note 3) 9 15 mA
e
2kX
R
From (Input)
To (Output)
e
C
L
L
15 pF C
Min Max Min Max
32 20
16 10
16 20 ns
18 24 ns
70 85 ns
70 90 ns
16 23 ns
21 30 ns
32 37 ns
35 44 ns
51 60 ns
51 70 ns
BtoQ
AtoQ
AtoQ
AtoQ
AtoQ
BtoQ
BtoQ
BtoQ
BtoQ
BtoQ
BtoQ
A
B
A
A
D
D
B
B
C
C
D
D
40 52 ns
Typ
(Note 1)
L
Max Units
b
0.4
b
2.4 mA
b
1.6
b
100 mA
e
50 pF Units
MHz
5
Page 6
Function Tables
LS90
BCD Count Sequence
(See Note A)
Count
Q
D
Q
Output
C
Q
B
0LLLL 1LLLH 2LLHL 3LLHH 4LHLL 5LHLH 6LHHL 7LHHH 8HLLL 9HLLH
LS93
Count Sequence
(See Note C)
Count
Output
QDQCQBQ
A
0LLLL 1LLLH 2LLHL 3LLHH 4LHLL 5LHLH 6LHHL 7LHHH 8HLLL
9HLLH 10 H L H L 11 H L H H 12 H H L L 13 H H L H 14 H H H L 15 H H H H
Note A: Output QAis connected to input B for BCD count.
Note B: Output Q
Note C: Output Q
Note D: H
is connected to input A for bi-quinary count.
D
is connected to input B.
A
e
High Level, LeLow Level, XeDon’t Care.
LS90
Bi-Quinary (5-2)
(See Note B)
Q
A
Q
A
Count
Q
Output
D
0 LLLL 1 LLLH 2LLHL 3LLHH 4 LHL L 5HLLL 6HLLH 7 HLHL 8 HLHH 9HHLL
LS90
Reset/Count Truth Table
Reset Inputs Output
R0(1) R0(2) R9(1) R9(2) QDQCQBQ
HHL XLLLL HHX LLLLL
XXHHHLLH X L X L COUNT L X L X COUNT L X X L COUNT X L L X COUNT
LS93
Reset/Count Truth Table
Reset Inputs Output
R0(1) R0(2) Q
Q
D
Q
C
B
HHLLLL L X COUNT X L COUNT
Q
C
Q
Q
B
A
A
6
Page 7
Logic Diagrams
LS90
LS93
The J and K inputs shown without connection are for reference only and are functionally at a high level.
TL/F/6381– 3
7
TL/F/6381– 4
Page 8
8
Page 9
Physical Dimensions inches (millimeters)
14-Lead Small Outline Molded Package (M) Order Number DM74LS90M or DM74LS93M
NS Package Number M14A
9
Page 10
Physical Dimensions inches (millimeters) (Continued)
14-Lead Molded Dual-In-Line Package (N)
Order Number DM74LS90N or DM74LS93N
NS Package Number N14A
DM74LS90/DM74LS93 Decade and Binary Counters
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 2. A critical component is any component of a life systems which, (a) are intended for surgical implant support device or system whose failure to perform can into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life failure to perform, when properly used in accordance support device or system, or to affect its safety or with instructions for use provided in the labeling, can effectiveness. be reasonably expected to result in a significant injury to the user.
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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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a
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