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74HC257DB Folha de dados(PDF) 6 Page - NXP Semiconductors

Nome de Peças 74HC257DB
Descrição Electrónicos  Quad 2-input multiplexer; 3-state
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Fabricante Electrônico  NXP [NXP Semiconductors]
Página de início  http://www.nxp.com
Logo NXP - NXP Semiconductors

74HC257DB Folha de dados(HTML) 6 Page - NXP Semiconductors

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74HC_HCT257_5
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 05 — 13 January 2010
6 of 17
NXP Semiconductors
74HC257; 74HCT257
Quad 2-input multiplexer; 3-state
9.
Static characteristics
Table 6.
Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
25
°C
−40 °C to
+85
°C
−40 °C to
+125
°C
Unit
Min
Typ
Max
Min
Max
Min
Max
74HC257
VIH
HIGH-level
input voltage
VCC = 2.0 V
1.5
1.2
-
1.5
-
1.5
-
V
VCC = 4.5 V
3.15
2.4
-
3.15
-
3.15
-
V
VCC = 6.0 V
4.2
3.2
-
4.2
-
4.2
-
V
VIL
LOW-level
input voltage
VCC = 2.0 V
-
0.8
0.5
-
0.5
-
0.5
V
VCC = 4.5 V
-
2.1
1.35
-
1.35
-
1.35
V
VCC = 6.0 V
-
2.8
1.8
-
1.8
-
1.8
V
VOH
HIGH-level
output voltage
VI = VIH or VIL
IO = −20 μA; VCC = 2.0 V
1.9
2.0
-
1.9
-
1.9
-
V
IO = −20 μA; VCC = 4.5 V
4.4
4.5
-
4.4
-
4.4
-
V
IO = −20 μA; VCC = 6.0 V
5.9
6.0
-
5.9
-
5.9
-
V
IO = −6.0 mA; VCC = 4.5 V
3.98
4.32
-
3.84
-
3.7
-
V
IO = −7.8 mA; VCC = 6.0 V
5.48
5.81
-
5.34
-
5.2
-
V
VOL
LOW-level
output voltage
VI = VIH or VIL
IO = 20 μA; VCC = 2.0 V
-
0
0.1
-
0.1
-
0.1
V
IO = 20 μA; VCC = 4.5 V
-
0
0.1
-
0.1
-
0.1
V
IO = 20 μA; VCC = 6.0 V
-
0
0.1
-
0.1
-
0.1
V
IO = 6.0 mA; VCC = 4.5 V
-
0.15
0.26
-
0.33
-
0.4
V
IO = 7.8 mA; VCC = 6.0 V
-
0.16
0.26
-
0.33
-
0.4
V
II
input leakage current VI = VCC or GND; VCC = 6.0 V
-
-
±0.1
-
±1.0 ±1.0
±1.0 μA
IOZ
OFF-state
output current
VI = VIH or VIL;
VO = VCC or GND;
VCC = 6.0 V
-
-
±0.5
-
±5.0 ±10.0 ±10.0 μA
ICC
supply current
VI = VCC or GND; IO = 0 A;
VCC = 6.0 V
-
-
8.0
-
80
160
160
μA
Ci
input capacitance
-
3.5
-
pF
74HCT257
VIH
HIGH-level
input voltage
VCC = 4.5 V to 5.5 V
2.0
1.6
-
2.0
-
2.0
-
V
VIL
LOW-level
input voltage
VCC = 4.5 V to 5.5 V
-
1.2
0.8
-
0.8
-
0.8
V
VOH
HIGH-level
output voltage
VI = VIH or VIL; VCC = 4.5 V
IO = −20 μA
4.4
4.5
-
4.4
-
4.4
-
V
IO = −6 mA
3.98
4.32
-
3.84
-
3.7
-
V
VOL
LOW-level
output voltage
VI = VIH or VIL; VCC = 4.5 V
-
0.1
-
0.1
IO = 20 μA
-
0
0.1
-
0.33
-
0.4
V
IO = 6.0 mA
-
0.15
0.26
-
±1.0
-
±1.0 V
II
input leakage current VI = VCC or GND; VCC = 5.5 V
-
-
±0.1
-
±5.0
-
±10 μA


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