74HC14 Datasheet, PDF (4/8 Pages) NXP Semiconductors – Hex inverting Schmitt trigger

Philips Semiconductors
Hex inverting Schmitt trigger
Product specification
74HC/HCT14
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Transfer characteristics are
given below.
Output capability: standard
I_CC category: SSI
Transfer characteristics for 74HC
Voltages are referenced to GND (ground = 0 V)
SYMBOL PARAMETER
T_amb (°C)
74HC
+25
−40 to +85
min. typ. max. min. max.
−40 to +125
min. max.
UNIT
TEST CONDITIONS
V_CC
(V)
WAVEFORMS
V_T+
positive-going
0.7 1.18 1.5 0.7 1.5 0.7 1.5 V
2.0 Figs 6 and 7
threshold
1.7 2.38 3.15 1.7 3.15 1.7 3.15
4.5
2.1 3.14 4.2 2.1 4.2 2.1 4.2
6.0
V_T−
negative-going
0.3 0.52 0.90 0.3 0.90 0.30 0.90 V
2.0 Figs 6 and 7
threshold
0.9 1.40 2.00 0.90 2.00 0.90 2.00
4.5
1.2 1.89 2.60 1.20 2.60 1.2 2.60
6.0
V_H
hysteresis
(V_T+ − V_T−)
0.2 0.66 1.0 0.2 1.0 0.2 1.0 V
0.4 0.98 1.4 0.4 1.4 0.4 1.4
0.6 1.25 1.6 0.6 1.6 0.6 1.6
2.0 Figs 6 and 7
4.5
6.0
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t_f = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
SYMBOL PARAMETER
74HC
+25
−40 to +85
min. typ. max. min. max.
t_PHL/ t_PLH propagation delay
41 125
155
nA to nY
15 25
31
12 21
26
t_THL/ t_TLH output transition
19 75
95
time
7 15
19
6 13
15
−40 to +125
min. max.
190
38
32
110
22
19
UNIT
ns
ns
TEST CONDITIONS
V_CC
(V)
WAVEFORMS
2.0 Fig.8
4.5
6.0
2.0 Fig.8
4.5
6.0
September 1993
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