74AHC257 Просмотр технического описания (PDF) - NXP Semiconductors.
Номер в каталоге
Компоненты Описание
Список матч
74AHC257 Datasheet PDF : 16 Pages
| |||
Nexperia
74AHC257; 74AHCT257
Quad 2-input multiplexer; 3-state
8. Recommended operating conditions
Table 5. Operating conditions
Symbol Parameter
74AHC257
VCC
VI
VO
Tamb
∆t/∆V
supply voltage
input voltage
output voltage
ambient temperature
input transition rise and fall rate
74AHCT257
VCC
VI
VO
Tamb
∆t/∆V
supply voltage
input voltage
output voltage
ambient temperature
input transition rise and fall rate
Conditions
VCC = 3.0 V to 3.6 V
VCC = 4.5 V to 5.5 V
VCC = 4.5 V to 5.5 V
9. Static characteristics
Min
Typ
Max
Unit
2.0
5.0
5.5
V
0
-
5.5
V
0
-
VCC
V
−40
+25
+125
°C
-
-
100
ns/V
-
-
20
ns/V
4.5
5.0
5.5
V
0
-
5.5
V
0
-
VCC
V
−40
+25
+125
°C
-
-
20
ns/V
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
74AHC257
VIH
HIGH-level VCC = 2.0 V
input voltage VCC = 3.0 V
1.5 -
-
1.5
-
1.5
-
V
2.1 -
-
2.1
-
2.1
-
V
VCC = 5.5 V
3.85 -
- 3.85
-
3.85
-
V
VIL
LOW-level
VCC = 2.0 V
input voltage VCC = 3.0 V
-
- 0.5
-
0.5
-
0.5 V
-
- 0.9
-
0.9
-
0.9 V
VCC = 5.5 V
-
- 1.65 -
1.65
-
1.65 V
VOH
HIGH-level VI = VIH or VIL
output voltage IO = −50 µA; VCC = 2.0 V
1.9 2.0
-
1.9
-
1.9
-
V
IO = −50 µA; VCC = 3.0 V 2.9 3.0 -
2.9
-
2.9
-
V
IO = −50 µA; VCC = 4.5 V 4.4 4.5 -
4.4
-
4.4
-
V
IO = −4.0 mA; VCC = 3.0 V 2.58 -
- 2.48
-
2.40
-
V
IO = −8.0 mA; VCC = 4.5 V 3.94 -
- 3.80
-
3.70
-
V
VOL
LOW-level
VI = VIH or VIL
output voltage IO = 50 µA; VCC = 2.0 V
-
0 0.1
-
0.1
-
0.1 V
IO = 50 µA; VCC = 3.0 V
-
0 0.1
-
0.1
-
0.1 V
IO = 50 µA; VCC = 4.5 V
-
0 0.1
-
0.1
-
0.1 V
IO = 4.0 mA; VCC = 3.0 V
-
- 0.36 -
0.44
-
0.55 V
IO = 8.0 mA; VCC = 4.5 V
-
- 0.36 -
0.44
-
0.55 V
74AHC_AHCT257_2
Product data sheet
Rev. 02 — 9 May 2008
© Nexperia B.V. 2017. All rights reserved
6 of 16
Share Link: 