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74HC_HCT4538 Folha de dados(PDF) 10 Page - NXP Semiconductors

Nome de Peças 74HC_HCT4538
Descrição Electrónicos  Dual retriggerable precision monostable multivibrator
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Fabricante Electrônico  PHILIPS [NXP Semiconductors]
Página de início  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74HC_HCT4538 Folha de dados(HTML) 10 Page - NXP Semiconductors

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74HC_HCT4538_3
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 8 June 2009
10 of 24
NXP Semiconductors
74HC4538; 74HCT4538
Dual retriggerable precision monostable multivibrator
tW
pulse width
nA LOW; see Figure 8
VCC = 2.0 V
80
17
-
100
-
120
-
ns
VCC = 4.5 V
16
6
-
20
-
24
-
ns
VCC = 6.0 V
14
5
-
17
-
20
-
ns
nB HIGH; see Figure 8
VCC = 2.0 V
80
17
-
100
-
120
-
ns
VCC = 4.5 V
16
6
-
20
-
24
-
ns
VCC = 6.0 V
14
5
-
17
-
20
-
ns
nCD LOW; see Figure 8
VCC = 2.0 V
80
19
-
100
-
120
-
ns
VCC = 4.5 V
16
7
-
20
-
24
-
ns
VCC = 6.0 V
14
6
-
17
-
20
-
ns
nQ and nQ HIGH or LOW;
see Figure 8
VCC = 5.0 V;
CEXT = 0.1 µF;
REXT = 10 kΩ
630
700
770
602
798
595
805
µs
trec
recovery time
nCD to nA, nB;
see Figure 8
VCC = 2.0 V
35
6
-
45
-
55
-
ns
VCC = 4.5 V
7
2
-
9
-
11
-
ns
VCC = 6.0 V
6
2
-
8
-
9
-
ns
trtrig
retrigger time
nA, nB; see Figure 8;
X=CEXT / (4.5 × VCC)
VCC = 2.0 V
-
455 + X
-----
ns
VCC = 4.5 V
-
80 + X
-----
ns
VCC = 6.0 V
-
55 + X
-----
ns
REXT
external timing
resistor
VCC = 2.0 V
10
-
1000
----
k
VCC = 5.0 V
2
-
1000
----
k
CEXT
external timing
capacitor
no limits
CPD
power
dissipation
capacitance
per multivibrator;
VI = GND to VCC
[3]
-
136
-----
pF
Table 7.
Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 9.
Symbol Parameter
Conditions
25
°C
−40 °C to
+85
°C
−40 °C to
+125
°C
Unit
Min
Typ[1]
Max
Min
Max
Min
Max


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