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SN74LS645 Fiches technique(PDF) 3 Page - Motorola, Inc

No de pièce SN74LS645
Description  OCTAL BUS TRANSCEIVERS
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Fabricant  MOTOROLA [Motorola, Inc]
Site Internet  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

SN74LS645 Fiches technique(HTML) 3 Page - Motorola, Inc

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5-3
FAST AND LS TTL DATA
SN54/74LS641
• SN54/74LS642
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
54
74
4.5
4.75
5.0
5.0
5.5
5.25
V
TA
Operating Ambient Temperature Range
54
74
–55
0
25
25
125
70
°C
VOH
Output Current — High
54, 74
5.5
V
IOL
Output Current — Low
54
74
12
24
mA
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Sb l
P
Limits
Ui
T
C
di i
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
VIH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage for
All Inputs
VIL
Input LOW Voltage
54
0.5
V
Guaranteed Input LOW Voltage for
VIL
Input LOW Voltage
74
0.6
V
pg
All Inputs
VIK
Input Clamp Diode Voltage
– 0.65
– 1.5
V
VCC = MIN, IIN = – 18 mA
IOH
Output HIGH Current
54, 74
100
µA
VCC = MIN, VOH = MAX
VOL
Output LOW Voltage
54, 74
0.25
0.4
V
IOL = 12 mA
VCC = VCC MIN,
VIN =VIL or VIH
VOL
Output LOW Voltage
74
0.35
0.5
V
IOL = 24 mA
VIN = VIL or VIH
per Truth Table
IIH
Input HIGH Current
20
µA
VCC = MAX, VIN = 2.7 V
IIH
Input HIGH Current
–0.1
mA
VCC = MAX, VIN = 7.0 V
IIL
Input LOW Current
– 0.4
mA
VCC = MAX, VIN = 0.4 V
I
Power Supply Current
Total, Output HIGH
70
mA
V
MAX
ICC
Total, Output LOW
90
mA
VCC = MAX
Total at HIGH Z
95
AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V)
Sb l
P
Limits
Ui
T
C
di i
Sb l
P
LS641
LS642
Ui
T
C
di i
Symbol
Parameter
Min
Typ
Max
Min
Typ
Max
Unit
Test Conditions
tPLH
tPHL
Propagation Delay,
A to B
17
16
25
25
19
14
25
25
ns
C45 F
tPLH
tPHL
Propagation Delay,
B to A
17
16
25
25
19
14
25
25
ns
CL = 45 pF,
tPLH
tPHL
Propagation Delay,
G, DIR to A
23
34
40
50
26
43
40
60
ns
L
p,
RL = 667 Ω
tPLH
tPHL
Propagation Delay,
G, DIR to B
25
37
40
50
28
39
40
60
ns


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