SN5414, SN54LS14,
SN7414, SN74LS14
HEX SCHMITT-TRIGGER INVERTERS
SDLS049B – DECEMBER 1983 – REVISED FEBRUARY 2002
†
TYPICAL CHARACTERISTICS OF ’14 CIRCUITS
THRESHOLD VOLTAGES
vs
DISTRIBUTION OF UNITS
FOR HYSTERESIS
SUPPLY VOLTAGE
2.0
V
T
= 5 V
CC
= 25°C
T
= 25°C
A
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
A
Positive-Going Threshold Voltage, V
T+
Negative-Going Threshold Voltage, V
T–
740
800 820 840 860 880 900
4.5
4.75
5
5.25
5.5
760 780
V – V – Hysteresis – mV
T+ T–
V
T+
– V – Hysteresis – mV
T–
Figure 6
Figure 7
OUTPUT VOLTAGE
vs
HYSTERESIS
vs
INPUT VOLTAGE
SUPPLY VOLTAGE
4
3
2
2.0
V
T
A
= 5 V
= 25°C
CC
T
A
= 25°C
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
V
T–
V
T+
1
0
4.5
4.75
V
5
5.25
5.5
0
0.4
V
0.8
1.2
1.6
2
– Supply Voltage – V
– Supply Voltage – V
CC
CC
Figure 8
Figure 9
†
Data for temperatures below 0°C and above 70°C and supply voltage below 4.75 V and above 5.25 V are applicable for SN5414 only.
9
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