DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE
(unless otherwise specified)
Limits
Symbol
VIH
VIL
VT+–VT–
VIK
VOH
Parameter
Input HIGH Voltage
54
Input LOW Voltage
74
Hysteresis
Input Clamp Diode Voltage
54, 74
Output HIGH Voltage
54, 74
54, 74
VOL
IOZH
IOZL
Output LOW Voltage
74
Output Off Current HIGH
Output Off Current LOW
D, E1, E2
IIH
Input HIGH Current
E1, E2
D Input
IIL
IOS
Input LOW Current
Output Short Circuit Current (Note 1)
Power Supply Current
Total, Output HIGH
ICC
Total, Output LOW
LS242
Total at HIGH Z
LS243
54
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
Min
2.0
Typ
Max
Unit
V
Test Conditions
Guaranteed Input HIGH Voltage for
All Inputs
Guaranteed Input LOW Voltage for
All Inputs
VCC = MIN
VCC = MIN, IIN = – 18 mA
VCC = MIN, IOH = – 3.0 mA
VCC = MIN, IOH = MAX
IOL = 12 mA
IOL = 24 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
0.7
V
0.8
0.2
0.4
– 0.65
2.4
2.0
0.25
0.35
0.4
0.5
40
– 200
20
0.1
0.1
– 0.2
– 40
– 225
38
50
50
mA
3.4
– 1.5
V
V
V
V
V
V
µA
µA
µA
mA
mA
mA
mA
VCC = MAX, VOUT = 2.7 V
VCC = MAX, VOUT = 0.4 V
VCC = MAX, VIN = 2.7 V
VCC = MAX, VIN = 7.0 V
VCC = MAX, VIN = 5.5 V
VCC = MAX, VIN = 0.4 V
VCC = MAX
VCC = MAX
FAST AND LS TTL DATA
5-394
SN54/74LS242
•
SN54/74LS243
AC CHARACTERISTICS
(TA = 25°C, VCC = 5.0 V)
Limits
LS242
Symbol
tPLH
tPHL
tPZH
tPZL
tPLZ
tPHZ
Parameter
Propagation Delay, Data to Output
Output Enable Time to HIGH Level
Output Enable Time to LOW Level
Output Disable Time from LOW Level
Output Disable Time from HIGH Level
Min
Typ
9.0
12
15
20
15
10
Max
14
18
23
30
25
18
Min
LS243
Typ
12
12
15
20
15
10
Max
18
18
23
30
25
18
Unit
ns
ns
ns
ns
ns
CL = 5.0 pF,
RL = 667
Ω
CL = 45 pF,
RL = 667
Ω
Test Conditions
AC WAVEFORMS
VIN
1.3 V
tPLH
1.3 V
tPHL
1.3 V
VCC
VOUT
1.3 V
RL
Figure 1
TO OUTPUT
UNDER TEST
SW1
VIN
1.3 V
tPHL
1.3 V
tPLH
1.3 V
CL*
5 k
Ω
VOUT
1.3 V
SW2
Figure 2
VE
VE
1.3 V
tPZL
1.3 V
1.3 V
tPLZ
SWITCH POSITIONS
SYMBOL
tPZH
tPZL
tPLZ
tPHZ
SW1
Open
Closed
Closed
Closed
SW2
Closed
Open
Closed
Closed
VOUT
≈
1.3 V
VOL
0.5 V
Figure 3
VE
1.3 V
VE
tPZH
VOUT
1.3 V
1.3 V
tPHZ
≥
VOH
0.5 V
Figure 5
≈
1.3 V
Figure 4
FAST AND LS TTL DATA
5-395
Case 751A-02 D Suffix
14-Pin Plastic
SO-14
-A-
14
8
NOTES:
1.
DIMENSIONS A" AND B" ARE DATUMS AND
T" IS A DATUM SURFACE.
2.
DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
3.
4.
CONTROLLING DIMENSION: MILLIMETER.
DIMENSION A AND B DO NOT INCLUDE MOLD
PROTRUSION.
5.
MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
6.
751A 01 IS OBSOLETE, NEW STANDARD
751A 02.
-B-
1
7
P
7 PL
0.25 (0.010)
M
B
M
G
C
SEATING
PLANE
R X 45°
D
14 PL
0.25 (0.010)
M
K
T
B
S
M
F
J
A
S
DIM
A
B
C
D
F
G
J
K
M
P
R
MILLIMETERS
MIN
MAX
8.55
3.80
1.35
0.35
0.40
8.75
4.00
1.75
0.49
1.25
INCHES
MIN
MAX
0.337
0.150
0.054
0.014
0.016
0.344
0.157
0.068
0.019
0.049
1.27 BSC
0.19
0.10
0
0.25
0.25
7
0.050 BSC
0.008
0.004
0
0.009
0.009
7
°
°
°
°
5.80
0.25
6.20
0.50
0.229
0.010
0.244
0.019
Case 632-08 J Suffix
14-Pin Ceramic Dual In-Line
-A-
14
8
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
-B-
1
7
3. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
4. DIM F MAY NARROW TO 0.76 (0.030) WHERE
THE LEAD ENTERS THE CERAMIC BODY.
5. 632 01 THRU 07 OBSOLETE, NEW STANDARD
C
L
632 08.
-T-
SEATING
PLANE
K
F
D
14 PL
0.25 (0.010)
M
G
T
A
S
N
J
14 PL
M
0.25 (0.010)
M
T
B
S
DIM
A
B
C
D
F
G
J
K
L
M
N
MILLIMETERS
MIN
MAX
19.05
6.23
3.94
0.39
1.40
19.94
7.11
5.08
0.50
1.65
INCHES
MIN
MAX
0.750
0.245
0.155
0.015
0.055
0.785
0.280
0.200
0.020
0.065
2.54 BSC
0.21
3.18
0.38
4.31
0.100 BSC
0.008
0.125
0.015
0.170
7.62 BSC
0
°
15
°
0.300 BSC
0
°
15
°
0.51
1.01
0.020
0.040
Case 646-06 N Suffix
14-Pin Plastic
NOTES:
1.
LEADS WITHIN 0.13 mm (0.005) RADIUS OF TRUE
POSITION AT SEATING PLANE AT MAXIMUM
MATERIAL CONDITION.
14
8
B
1
7
2.
DIMENSION L" TO CENTER OF LEADS WHEN
FORMED PARALLEL.
3.
DIMENSION B" DOES NOT INCLUDE MOLD
FLASH.
4.
5.
ROUNDED CORNERS OPTIONAL.
646 05 OBSOLETE, NEW STANDARD 646 06.
A
F
C
N
H
G
D
SEATING
PLANE
NOTE 4
L
J
K
M
DIM
A
B
C
D
F
G
H
J
K
L
M
N
MILLIMETERS
MIN
MAX
18.16
6.10
3.69
0.38
1.02
19.56
6.60
4.69
0.53
1.78
INCHES
MIN
MAX
0.715
0.240
0.145
0.015
0.040
0.770
0.260
0.185
0.021
0.070
2.54 BSC
1.32
0.20
2.92
2.41
0.38
3.43
0.100 BSC
0.052
0.008
0.115
0.095
0.015
0.135
7.62 BSC
0
°
10
°
0.300 BSC
0
°
10
°
0.39
1.01
0.015
0.039
FAST AND LS TTL DATA
5-396
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the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit,
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are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer.
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