SN74LS640 Просмотр технического описания (PDF) - ON Semiconductor
Номер в каталоге
Компоненты Описание
производитель
SN74LS640 Datasheet PDF : 8 Pages
| |||
SN74LS640 SN74LS641 SN74LS642 SN74LS645
SN74LS640 • SN74LS645
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Symbol
Parameter
Limits
Min Typ Max Unit
Test Conditions
Guaranteed Input HIGH Voltage for
VIH
Input HIGH Voltage
2.0
V
All Inputs
VIL
Input LOW Voltage
0.6
V
Guaranteed Input LOW Voltage for
All Inputs
VIK
Input Clamp Diode Voltage
VOH
Output HIGH Voltage
VOL
Output LOW Voltage
– 0.65 – 1.5
V
VCC = MIN, IIN = – 18 mA
2.4
3.4
V
VCC = MIN, IOH = 3.0 mA
2.0
V
VCC = MIN, IOH = MAX
0.25 0.4
0.35 0.5
V
IOL = 12 mA
V
IOL = 24 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
IOZH
IOZL
IIH
IIL
IOS
ICC
Output Off Current HIGH
Output Off Current LOW
A or B, DIR or G
Input HIGH Current DIR or G
A or B
Input LOW Current
Output Short Circuit Current (Note 1)
– 40
Power Supply Current
Total Output HIGH
Total, Output LOW
20
µA VCC = MAX, VOUT = 2.7 V
– 400 µA VCC = MAX, VOUT = 0.4 V
20
µA VCC = MAX, VIN = 2.7 V
0.1
mA VCC = MAX, VIN = 7.0 V
0.1
mA VCC = MAX, VIN = 5.5 V
– 0.4 mA VCC = MAX, VIN = 0.4 V
– 225 mA VCC = MAX
70
90
mA VCC = MAX
Total at HIGH Z
95
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V)
Limits
LS640
LS645
Symbol
Parameter
Min Typ Max Min Typ Max Unit
tPLH
Propagation Delay
tPHL
A to B
6.0 10
8.0 15
8.0 15
11 15
ns
tPLH
Propagation Delay
tPHL
B to A
6.0 10
8.0 15
8.0 15
11 15
ns
tPZL
Output Enable Time
tPZH
G, DIR to A
31 40
23 40
31 40
26
40
ns
tPZL
Output Enable Time
tPZH
G, DIR to B
31 40
23 40
31
26
40
40
ns
tPLZ
Output Disable Time
tPHZ
G, DIR to A
15 25
15 25
15
15
25
25
ns
tPLZ
Output Disable Time
tPHZ
G, DIR to B
15 25
15 25
15 25
15
25
ns
Test Conditions
CL = 45 pF,
RL = 667 Ω
CL = 5.0 pF
http://onsemi.com
3
Share Link: 