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74LS645 датащи(PDF) 4 Page - ON Semiconductor

номер детали 74LS645
подробное описание детали  LOW POWER SCHOTTKY
PDF  8 Pages
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производитель  ONSEMI [ON Semiconductor]
домашняя страница  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

74LS645 датащи(HTML) 4 Page - ON Semiconductor

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SN74LS640 SN74LS641 SN74LS642 SN74LS645
http://onsemi.com
4
SN74LS641
• SN74LS642
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
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
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
100
µA
VCC = MIN, VOH = MAX
VO
Output LOW Voltage
0.25
0.4
V
IOL = 12 mA
VCC = VCC MIN,
VIN =VIL or VIH
VOL
Output LOW Voltage
0.35
0.5
V
IOL = 24 mA
VIN = VIL or VIH
per Truth Table
I
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
A
V
MAX
ICC
Total, Output LOW
90
mA
VCC = MAX
Total at HIGH Z
95
AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V)
Limits
LS641
LS642
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
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
RL = 667 Ω
tPLH
tPHL
Propagation Delay,
G, DIR to B
25
37
40
50
28
39
40
60
ns



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