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PDF 74HC7540 Data sheet ( Hoja de datos )
| Número de pieza | 74HC7540 | |
| Descripción | Octal Schmitt trigger buffer/line driver 3-state inverting | |
| Fabricantes | Philips | |
| Logotipo |  |
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INTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
• The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications
• The IC06 74HC/HCT/HCU/HCMOS Logic Package Information
• The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines
74HC/HCT7540
Octal Schmitt trigger buffer/line
driver; 3-state; inverting
Product specification
Supersedes data of March 1988
File under Integrated Circuits, IC06
December 1990
1 page  
Philips Semiconductors
Octal Schmitt trigger buffer/line driver;
3-state; inverting
Product specification
74HC/HCT7540
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Transfer characteristics are given below (not applicable for OEn inputs).
Output capability: bus driver
ICC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
SYMBOL PARAMETER
74HC
UNIT
+25 −40 to +85 −40 to +125
min. typ. max. min. max. min. max.
tPHL/ tPLH propagation delay
An to Yn
tPZH/ tPZL
tPHZ/ tPLZ
tTHL/ tTLH
3-state output enable
time
OEn to Yn
3-state output disable
time
OEn to Yn
output transition time
39 120
14 24
11 20
41 150
15 30
12 26
52 150
19 30
15 26
14 60
5 12
4 10
150
30
26
190
38
33
190
38
33
75
15
13
180 ns
36
31
225 ns
45
38
225 ns
45
38
90 ns
18
15
TEST CONDITIONS
VCC
(V)
WAVEFORMS
2.0 Fig.8
4.5
6.0
2.0 Fig.9
4.5
6.0
2.0 Fig.9
4.5
6.0
2.0 Fig.8
4.5
6.0
TRANSFER CHARACTERISTICS FOR 74HC
Voltages are referred to GND (ground = 0 V)
Tamb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
+25
min. typ. max.
74HC
−40 to +85
min. max.
−40 to +125
min. max.
UNIT
VCC
(V)
WAVEFORMS
VT+ positive-going threshold
1.50 1.50
3.15 3.15
4.20 4.20
1.50 V
3.15
4.20
2.0 Figs 6 and 7
4.5
6.0
VT− negative-going threshold 0.30
1.35
1.80
0.30 0.30
1.35 1.35
1.80 1.80
V 2.0 Figs 6 and 7
4.5
6.0
VH hysteresis (VT+ − VT−) 0.10 0.20
0.25 0.40
0.30 0.50
0.10
0.25
0.30
0.10
0.25
0.30
V 2.0 Figs 6 and 7
4.5
6.0
December 1990
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet 74HC7540.PDF ] | |
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