Motorola SN54LS20J, SN74LS20D, SN74LS20N Datasheet
5-29
FAST AND LS TTL DATA
DUAL 4-INPUT NAND GATE
14 13 12 11 10 9
1 2 3 4 5 6
V
CC
8
7
GND
GUARANTEED OPERATING RANGES
Symbol Parameter Min Typ Max Unit
V
CC
Supply Voltage 54
74
4.5
4.75
5.0
5.0
5.5
5.25
V
T
A
Operating Ambient Temperature Range 54
74
–55
0
25
25
125
70
°C
I
OH
Output Current — High 54, 74 –0.4 mA
I
OL
Output Current — Low 54
74
4.0
8.0
mA
SN54/74LS20
DUAL 4-INPUT NAND GATE
LOW POWER SCHOTTKY
J SUFFIX
CERAMIC
CASE 632-08
N SUFFIX
PLASTIC
CASE 646-06
14
1
14
1
ORDERING INFORMATION
SN54LSXXJ Ceramic
SN74LSXXN Plastic
SN74LSXXD SOIC
14
1
D SUFFIX
SOIC
CASE 751A-02
5-30
FAST AND LS TTL DATA
SN54/74LS20
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Parameter
Min Typ Max
Unit
Test Conditions
V
IH
Input HIGH Voltage 2.0 V
Guaranteed Input HIGH Voltage for
All Inputs
54 0.7
VILInput LOW Voltage
74 0.8
V
Guaranteed Input LOW Voltage for
All Inputs
V
IK
Input Clamp Diode Voltage –0.65 –1.5 V VCC = MIN, IIN = –18 mA
54 2.5 3.5 V
CC
= MIN, IOH = MAX, VIN = V
IH
VOHOutput HIGH Voltage
74 2.7 3.5 V
VCC = MIN, IOH = MAX, VIN = V
IH
or VIL per Truth Table
54, 74 0.25 0.4 V IOL = 4.0 mA
VOLOutput LOW Voltage
74 0.35 0.5 V IOL = 8.0 mA
VIN = VIL or V
IH
per Truth Table
20 µA VCC = MAX, VIN = 2.7 V
IIHInput HIGH Current
0.1 mA VCC = MAX, VIN = 7.0 V
I
IL
Input LOW Current –0.4 mA VCC = MAX, VIN = 0.4 V
I
OS
Short Circuit Current (Note 1) –20 –100 mA VCC = MAX
0.8
= MAX
I
CC
2.2
mA
VCC = MAX
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (T
A
= 25°C)
Limits
Symbol
Parameter
Min Typ Max
Unit
Test Conditions
t
PLH
Turn-Off Delay, Input to Output 9.0 15 ns
CC
= 5.0 V
t
PHL
Turn-On Delay, Input to Output 10 15 ns
VCC = 5.0 V
CL = 15 pF
I
Power Supply Current
Total, Output HIGH
Total, Output LOW
mA V
Guaranteed Input LOW Voltage for
V
VCC = VCC MIN,
V
Loading...