74HCT14 Datasheet, PDF (10/23 Pages) NXP Semiconductors – Hex inverting Schmitt trigger

Philips Semiconductors
Hex inverting Schmitt trigger
Product specification
74HC14; 74HCT14
TRANSFER CHARACTERISTICS
Type 74HC
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
SYMBOL
PARAMETER
TEST CONDITIONS
WAVEFORMS
V_CC (V)
MIN.
T_amb = 25 °C; note 1
V_T+
positive-going threshold Figs 7 and 8
2.0
0.7
4.5
1.7
6.0
2.1
V_T−
negative-going threshold Figs 7 and 8
2.0
0.3
4.5
0.9
6.0
1.2
V_H
hysteresis (V_T+ − V_T−)
Figs 7 and 8
2.0
0.2
4.5
0.4
6.0
0.6
T_amb = −40 to +85 °C
V_T+
positive-going threshold Figs 7 and 8
2.0
0.7
4.5
1.7
6.0
2.1
V_T−
negative-going threshold Figs 7 and 8
2.0
0.3
4.5
0.90
6.0
1.20
V_H
hysteresis (V_T+ − V_T−)
Figs 7 and 8
2.0
0.2
4.5
0.4
6.0
0.6
T_amb = −40 to +125 °C
V_T+
positive-going threshold Figs 7 and 8
2.0
0.7
4.5
1.7
6.0
2.1
V_T−
negative-going threshold Figs 7 and 8
2.0
0.30
4.5
0.90
6.0
1.2
V_H
hysteresis (V_T+ − V_T−)
Figs 7 and 8
2.0
0.2
4.5
0.4
6.0
0.6
TYP.
1.18
2.38
3.14
0.52
1.40
1.89
0.66
0.98
1.25
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
Note
1. All typical values are measured at T_amb = 25 °C.
MAX. UNIT
1.5
V
3.15
V
4.2
V
0.90
V
2.00
V
2.60
V
1.0
V
1.4
V
1.6
V
1.5
V
3.15
V
4.2
V
0.90
V
2.00
V
2.60
V
1.0
V
1.4
V
1.6
V
1.5
V
3.15
V
4.2
V
0.90
V
2.00
V
2.60
V
1.0
V
1.4
V
1.6
V
2003 Oct 30
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