SN74LS670 查看數據表（PDF） - Motorola => Freescale
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SN74LS670 Datasheet PDF : 6 Pages
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SN54 / 74LS670
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
Supply Voltage
TA
Operating Ambient Temperature Range
IOH
Output Current — High
IOL
Output Current — Low
Min
Typ
Max
Unit
54
4.5
5.0
5.5
V
74
4.75
5.0
5.25
54
– 55
25
125
°C
74
0
25
70
54
–1.0
mA
74
–2.6
54
12
mA
74
24
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
54
VIL
Input LOW Voltage
74
0.7
Guaranteed Input LOW Voltage for
0.8
V
All Inputs
VIK
VOH
Input Clamp Diode Voltage
54
Output HIGH Voltage
74
– 0.65 – 1.5
2.4
3.4
2.4
3.1
V
VCC = MIN, IIN = – 18 mA
V
VCC = MIN, IOH = MAX, VIN = VIH
V
or VIL per Truth Table
VOL
Output LOW Voltage
54, 74
74
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
Output Off Current HIGH
20
µA VCC = MAX, VO = 2.7 V
IOZL
Output Off Current LOW
–20
µA VCC = MAX, VO = 0.4 V
Input HIGH Current
D, R, W
EW
IIH
ER
D, R, W
EW
ER
20
40
µA VCC = MAX, VIN = 2.7 V
60
0.1
0.2
mA VCC = MAX, VIN = 7.0 V
0.3
Input LOW Current
IIL
D, R, W
EW
ER
– 0.4
– 0.8
–1.2
mA VCC = MAX, VIN = 0.4 V
IOS
Short Circuit Current (Note 1)
– 30
– 130 mA VCC = MAX
ICC
Power Supply Current
50
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
mA VCC = MAX
FAST AND LS TTL DATA
5-599
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