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74LS645 データシート(PDF) 3 Page - Motorola, Inc

部品番号 74LS645
部品情報  OCTAL BUS TRANSCEIVERS
PDF  3 Pages
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メーカー  MOTOROLA [Motorola, Inc]
ホームページ  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

74LS645 データシート(HTML) 3 Page - Motorola, Inc

  74LS645 Datasheet HTML 1Page - Motorola, Inc 74LS645 Datasheet HTML 2Page - Motorola, Inc 74LS645 Datasheet HTML 3Page - Motorola, Inc  
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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)
Symbol
Parameter
Limits
Unit
Test Conditions
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
All Inputs
VIL
Input LOW Voltage
74
0.6
V
Guaranteed Input LOW Voltage for
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
per Truth Table
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
ICC
Power Supply Current
Total, Output HIGH
70
mA
VCC = MAX
ICC
Total, Output LOW
90
mA
VCC = MAX
Total at HIGH Z
95
AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V)
Symbol
Parameter
Limits
Unit
Test Conditions
Symbol
Parameter
LS641
LS642
Unit
Test Conditions
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
CL = 45 pF,
RL = 667 Ω
tPLH
tPHL
Propagation Delay,
B to A
17
16
25
25
19
14
25
25
ns
CL = 45 pF,
RL = 667 Ω
tPLH
tPHL
Propagation Delay,
G, DIR to A
23
34
40
50
26
43
40
60
ns
CL = 45 pF,
RL = 667 Ω
tPLH
tPHL
Propagation Delay,
G, DIR to B
25
37
40
50
28
39
40
60
ns



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