74HC14 Datasheet, PDF (5/9 Pages) NXP Semiconductors – Hex inverting Schmitt trigger

74HC14
AC CHARACTERISTICS (C_L = 50pF, Input t_r = t_f = 6ns)
Symbol
Parameter
Guaranteed Limit
V_CC
(V) −55 to 25°C ≤85°C
≤125°C Unit
t_PLH,
t_PHL
Maximum Propagation Delay, Input A or B to Output Y
(Figures 1 and 2)
2.0
75
3.0
30
4.5
15
6.0
13
95
110
ns
40
55
19
22
16
19
t_TLH,
t_THL
Maximum Output Transition Time, Any Output
(Figures 1 and 2)
2.0
75
3.0
27
4.5
15
6.0
13
95
110
ns
32
36
19
22
16
19
C_in
Maximum Input Capacitance
10
10
10
pF
NOTE: For propagation delays with loads other than 50 pF, and information on typical parametric values, see Chapter 2 of the ON
Semiconductor High−Speed CMOS Data Book (DL129/D).
Typical @ 25°C, V_CC = 5.0 V
C_PD
Power Dissipation Capacitance (Per Inverter)*
22
pF
* Used to determine the no−load dynamic power consumption: P_D = C_PD V_CC2f + I_CC V_CC. For load considerations, see Chapter 2 of the
ON Semiconductor High−Speed CMOS Data Book (DL129/D).
t_f
t_r
INPUT A
90%
50%
10%
t_PLH
OUTPUT Y
90%
50%
10%
t_TLH
V_CC
GND
t_PHL
t_THL
Figure 1. Switching Waveforms
DEVICE
UNDER
TEST
TEST
POINT
OUTPUT
C_L*
*Includes all probe and jig capacitance
Figure 2. Test Circuit
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