MC14584B
PULSE
GENERATOR
INPUT
VDD
14
OUTPUT
7 VSS
CL
20 ns
INPUT
tPHL
OUTPUT
90%
50%
10%
90%
50%
10%
tf
Figure 1. Switching Time Test Circuit and Waveforms
20 ns
VDD
VSS
tPLH VOH
VOL
tr
Vin
Vout
VH
VDD
VH
VDD
VT+
VT+
Vin
VT–
Vin
VT–
VSS
VSS
VDD
VDD
Vout
Vout
VSS
(a) Schmitt Triggers will square up inputs with slow
rise and fall times.
VSS
(b) A Schmitt trigger offers maximum noise immunity
in gate applications.
Figure 2. Typical Schmitt Trigger Applications
VDD
0
0
VT– VT+
VDD
VH
Vin, INPUT VOLTAGE (Vdc)
Figure 3. Typical Transfer Characteristics
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