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SL74LS14
Semiconductor
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.
LOGIC DIAGRAM
ORDERING INFORMATION
SL74LS14N Plastic
SL74LS14D SOIC
TA = 0° to 70° C for all
packages
PIN ASSIGNMENT
SLS
System Logic
PIN 14 =VCC
PIN 7 = GND
FUNCTION TABLE
Inputs Output
A Y
L H
H L
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SL74LS14
Semiconductor
MAXIMUM RATINGS*
Symbol Parameter Value Unit
VCC Supply Voltage 7.0 V
VIN Input Voltage 7.0 V
V
Output Voltage 5.5 V
OUT
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
VCC Supply Voltage 4.75 5.25 V
IOH High Level Output Current -15 mA
IOL Low Level Output Current 24 mA
TA Ambient Temperature Range 0 +70 °C
DC ELECTRICAL CHARACTERISTICS over full operating conditions
Guaranteed Limit
Symbol Parameter Test Conditions Min Max Unit
VT+ - Positive-Going Input Threshold
Voltage
VT- - Negative-Going Input Threshold
Voltage
VT+ - VT- Hysteresis VCC = 5 V 0.4 V
VIK Input Clamp Voltage VCC = min, IIN = -18 mA -1.5 V
VOH High Level Output Voltage VCC = min, IOH = -0.4 mA,
VOL Low Level Output Voltage VCC = min, IOL = 4 mA
VCC = min, IOL = 8 mA
IIH High Level Input Current VCC = max, VIN = 2.7 V 20 µA
VCC = 5 V 0.5 1 V
VCC = 5 V 1.4 1.9 V
2.7 V
VI=0.5 V
0.4 V
VI=1.9 V
0.5
VI=1.9 V
VCC = max, VIN = 7.0 V 0.1 mA
IIL Low Level Input Current VCC = max, VIN = 0.4 V -0.4 mA
IO Output Short Circuit Current VCC = max, VO =0 V
(Note 1)
ICC Supply Current Total with
outputs high
Total with
outputs low
VCC = max 16 mA
21
-20 -100 mA
System Logic
SLS
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SL74LS14
Semiconductor
Note 1: Not more than one output should be shorted at a time, and the duration should not exceed one second.
SLS
System Logic
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SL74LS14
Semiconductor
AC ELECTRICAL CHARACTERISTICS (T
RL = 2 kΩ, tr = 15 ns, tf = 6.0 ns)
Symbol Parameter Min Max Unit
t
Propagation Delay, Input A to Output Y 22 ns
PLH
t
Propagation Delay, Input A to Output Y 22 ns
PHL
= 25°C, VCC = 5.0 V, CL = 15 pF,
A
Figure 1. Switching Waveforms
NOTES A. CL includes probe and jig capacitance.
B. All diodes are 1N916 or 1N3064.
Figure 2. Test Circuit
SLS
System Logic
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