INTEGRAL IN74LS14

TECHNICAL DATA
IN74LS14
Hex Schmitt-Trigger Inverter
This device contains six independent gates each of which performs
the logic INVERT function. Each input has hysteresis which increases
the noise immunity and transforms a slowly changing input signal to a
fast changing, jitter free output.
ORDERING INFORMATION
IN74LS14N Plastic
IN74LS14D SOIC
TA = 0° to 70° C for all
packages
LOGIC DIAGRAM
PIN ASSIGNMENT
FUNCTION TABLE
Inputs
Output
A
Y
L
H
H
L
PIN 14 =VCC
PIN 7 = GND
1
IN74LS14
MAXIMUM RATINGS*
Symbol
Parameter
Value
Unit
VCC
Supply Voltage
7.0
V
VIN
Input Voltage
7.0
V
VOUT
Output Voltage
5.5
V
Tstg
Storage Temperature Range
-65 to +150
°C
*
Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
Max
Unit
4.75
5.25
V
VCC
Supply Voltage
IOH
High Level Output Current
-15
mA
IOL
Low Level Output Current
24
mA
TA
Ambient Temperature Range
+70
°C
0
DC ELECTRICAL CHARACTERISTICS over full operating conditions
Guaranteed Limit
Symbol
Parameter
Test Conditions
Min
Max
Unit
VT+ -
Positive-Going Input Threshold
Voltage
VCC = 5 V
0.5
1
V
VT- -
Negative-Going Input Threshold
Voltage
VCC = 5 V
1.4
1.9
V
Hysteresis
VCC = 5 V
0.4
VIK
Input Clamp Voltage
VCC = min, IIN = -18 mA
VOH
High Level Output Voltage
VCC = min, IOH = -0.4 mA,
VI=0.5 V
VOL
Low Level Output Voltage
VCC = min, IOL = 4 mA
VI=1.9 V
0.4
VCC = min, IOL = 8 mA
VI=1.9 V
0.5
VCC = max, VIN = 2.7 V
20
µA
VCC = max, VIN = 7.0 V
0.1
mA
-0.4
mA
-100
mA
16
mA
VT+ - VT-
IIH
High Level Input Current
IIL
Low Level Input Current
VCC = max, VIN = 0.4 V
IO
Output Short Circuit Current
VCC = max, VO =0 V
(Note 1)
ICC
Supply Current
VCC = max
Total with
outputs high
Total with
outputs low
V
-1.5
2.7
-20
V
V
V
21
Note 1: Not more than one output should be shorted at a time, and the duration should not exceed one second.
2
IN74LS14
AC ELECTRICAL CHARACTERISTICS (TA = 25°C, VCC = 5.0 V, CL = 15 pF,
RL = 2 kΩ, tr = 15 ns, tf = 6.0 ns)
Symbol
Parameter
Min
Max
Unit
tPLH
Propagation Delay, Input A to Output Y
22
ns
tPHL
Propagation Delay, Input A to Output Y
22
ns
Figure 1. Switching Waveforms
NOTES A. CL includes probe and jig capacitance.
B. All diodes are 1N916 or 1N3064.
Figure 2. Test Circuit
3