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SN74AHCT14DGVRE4 Folha de dados(PDF) 6 Page - Texas Instruments

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Nome de Peças SN74AHCT14DGVRE4
Descrição Electrónicos  SNx4AHCT14 Hex Schmitt-Trigger Inverters
Download  33 Pages
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

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SN54AHCT14, SN74AHCT14
SCLS246Q – OCTOBER 1995 – REVISED JULY 2014
www.ti.com
7.7 Noise Characteristics
VCC = 5 V, CL = 50 pF, TA = 25°C
(1)
SN74AHCT14
PARAMETER
UNIT
MIN
TYP
MAX
VOL(P)
Quiet output, maximum dynamic VOL
0.9
V
VOL(V)
Quiet output, minimum dynamic VOL
–0.7
V
VOH(V)
Quiet output, minimum dynamic VOH
4.3
V
VIH(D)
High-level dynamic input voltage
2.1
V
VIL(D)
Low-level dynamic input voltage
0.5
V
(1)
Characteristics are for surface-mount packages only.
7.8 Operating Characteristics
VCC = 5 V, TA = 25°C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance
No load,
f = 1 MHz
112
pF
7.9 Typical Characteristics
One common misconception is that the current consumption will be less when switching a slow signal into a Schmitt trigger.
This is partly true because the Schmitt trigger prevents oscillation which can draw a lot of current; however, you will see
higher ICC current due to the amount of time the input is not at the rail. This is Delta ICC. Delta ICC is where the inputs are not
at the rails and upper or lower drive transistors are partially on. Figure 1 shows ICC across the input voltage sweep.
Figure 1. Supply Current vs Input Voltage
6
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Product Folder Links: SN54AHCT14 SN74AHCT14


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