74HCT7540 데이터 시트보기 (PDF) - Nexperia B.V. All rights reserved
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74HCT7540
Nexperia B.V. All rights reserved
74HCT7540 Datasheet PDF : 15 Pages
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Nexperia
74HC7540; 74HCT7540
Octal Schmitt trigger buffer/line driver; 3-state; inverting
12. Transfer characteristics
Table 10. Transfer characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V); see Figure 8 and Figure 9.
Symbol Parameter Conditions
Tamb = 25 C
Tamb = 40 C
to +85 C
Tamb = 40 C Unit
to +125 C
Min Typ Max Min
Max
Min
Max
74HC7540
VT+
positive-going VCC = 2.0 V
threshold
voltage
VCC = 4.5 V
VCC = 6.0 V
VT
negative-going VCC = 2.0 V
threshold
voltage
VCC = 4.5 V
VCC = 6.0 V
VH
hysteresis
VCC = 2.0 V
voltage
VCC = 4.5 V
VCC = 6.0 V
74HCT7540
-
- 1.5
-
1.5
-
1.5 V
-
- 3.15 -
3.15
-
3.15 V
-
- 4.2
-
4.2
-
4.2 V
0.3 -
-
0.3
-
0.3
-
V
1.35 -
- 1.35
-
1.35
-
V
1.8 -
-
1.8
-
1.8
-
V
0.1 0.20 -
0.1
-
0.1
-
V
0.25 0.40 - 0.25
-
0.25
-
V
0.3 0.5 -
0.3
-
0.3
-
V
VT+
positive-going VCC = 4.5 V
threshold
voltage
VCC = 5.5 V
-
- 2.0
-
2.0
-
2.0 V
-
- 2.1
-
2.1
-
2.1 V
VT
negative-going VCC = 4.5 V
threshold
voltage
VCC = 5.5 V
0.7 -
- 0.64
-
0.6
-
V
0.8 -
- 0.74
-
0.7
-
V
VH
hysteresis
VCC = 4.5 V
voltage
VCC = 5.5 V
0.17 0.23 -
-
-
-
-
V
0.17 0.23 -
-
-
-
-
V
13. Transfer characteristics waveforms
92
97
9,
9+
97
9+
97
97
Fig 8. Transfer characteristics
9,
PQD
92
PQD
Fig 9. Transfer characteristics definitions
74HC_HCT7540
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 26 May 2016
© Nexperia B.V. 2017. All rights reserved
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