SN74LS248N データシートの表示（PDF） - Motorola => Freescale
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SN74LS248N Datasheet PDF : 8 Pages
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SN54 / 74LS248
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
Supply Voltage
TA
Operating Ambient Temperature Range
IOH
Output Current — High BI / RBO
Output Current — High a – g
IOL
Output Current — Low BI / RBO
Output Current — Low BI / RBO
Output Current — Low a – g
Output Current — Low a – g
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, 74
– 50
µA
54, 74
– 100
54
1.6
mA
74
3.2
54
2.0
74
6.0
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
Output HIGH Voltage
54
a – g and BI / RBO
74
– 0.65 – 1.5
2.4
4.2
2.4
4.2
V VCC = MIN, IIN = – 18 mA
V VCC = MIN, IOH = MAX, VIN = VIH
V or VIL per Truth Table
IOH
VOL
IIH
IIL
Output Current
a–g
Output LOW Voltage
a–g
BI / RBO
54, 74 – 1.3
54, 74
74
54, 74
74
Input HIGH Current
Any Input, except BI/ RBO
Input LOW Current
Any Input, except BI/ RBO
BI / RBO
– 2.0
0.25
0.35
0.25
0.35
0.4
0.5
0.4
0.5
20
0.1
– 0.4
– 1.2
mA
VCC = MIN, VO = 0.85 V,
Input Conditions as for VOH
V IOL = 2.0 mA
IOL = 6.0 mA
IOL = 1.6 mA
V
IOL = 3.2 mA
VCC = MIN, VIH = 2.0 V,
VIL = per Truth Table
µA VCC = MAX, VIN = 2.7 V
mA VCC = MAX, VIN = 7.0 V
mA VCC = MAX, VIN = 0.4 V
IOS
Short Circuit Current
BI / RBO (Note 1)
– 0.3
– 2.0 mA VCC = MAX
ICC
Power Supply Current
25
38
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
mA VCC = MAX
AC CHARACTERISTICS (VCC = 5.0 V, TA = 25°C)
Symbol
tPLH
tPHL
tPHL
tPLH
Parameter
Propagation Delay Time, High-to-Low-Level Output from A Input
Propagation Delay Time, Low-to-High-Level Output from A Input
Propagation Delay Time, High-to-Low-Level Output from RBI Input
Propagation Delay Time, Low-to-High-Level Output from RBI Input
Limits
Min Typ Max Unit
100
100
ns
100
100
ns
Test Conditions
CL = 15 pF
RL = 4.0 kΩ
CL = 15 pF
RL = 6.0 kΩ
FAST AND LS TTL DATA
5-406
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