SN5414, SN54LS14,
SN7414, SN74LS14
HEX SCHMITT-TRIGGER INVERTERS
SDLS049B – DECEMBER 1983 – REVISED FEBRUARY 2002
†
TYPICAL CHARACTERISTICS OF ’LS14 CIRCUITS
POSITIVE-GOING THRESHOLD VOLTAGE
NEGATIVE-GOING THRESHOLD VOLTAGE
vs
vs
FREE-AIR TEMPERATURE
FREE-AIR TEMPERATURE
1.70
0.90
V
= 5 V
CC
V
= 5 V
CC
1.69
1.68
1.67
1.66
1.65
1.64
1.63
1.62
1.61
1.60
0.89
0.88
0.87
0.86
0.85
0.84
0.83
0.82
0.81
0.80
–75 –50 –25
0
25
50
75 100 125
–75 –50 –25
0
25
50
75 100 125
T
A
– Free-Air Temperature – °C
T
A
– Free-Air Temperature – °C
Figure 10
Figure 11
HYSTERESIS
vs
FREE-AIR TEMPERATURE
DISTRIBUTION OF UNITS
FOR HYSTERESIS
850
V
T
A
= 5 V
= 25°C
CC
V
CC
= 5 V
840
830
820
810
800
790
780
770
760
750
99% ARE
ABOVE
735 mV
720
740 760 780 800 820 840 860 880
–75 –50 –25
0
25
50
75 100 125
T
A
– Free-Air Temperature – °C
V – V – Hysteresis – mV
T+ T–
Figure 12
Figure 13
†
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.
10
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TI [ TEXAS INSTRUMENTS ]
