SN74LS248 Motorola, SN74LS248 Datasheet - Page 5

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SN74LS248

Manufacturer Part Number
SN74LS248
Description
BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS
Manufacturer
Motorola
Datasheet
GUARANTEED OPERATING RANGES
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS
V CC
T A
I OH
I OL
V IH
V IL
V IL
V IK
V OH
V OH
I OH
V OL
V OL
V OL
I IH
I IH
I IL
I IL
I OS
I CC
t PLH
t PHL
t PHL
t PLH
OH
Symbol
Symbol
Symbol
Symbol
Symbol
Supply Voltage
Operating Ambient Temperature Range
Output Current — High BI / RBO
Output Current — High
Output Current — Low BI / RBO
Output Current — Low
Output Current — Low
Output Current — Low
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
Input HIGH Voltage
Input LOW Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH Voltage
Output HIGH Voltage
Output Current
Output LOW Voltage
Input HIGH Current
Input HIGH Current
Input LOW Current
Short Circuit Current
Power Supply Current
a – g and BI / RBO
a – g and BI / RBO
a – g
a – g
BI / RBO
Any Input, except BI/ RBO
Any Input, except BI/ RBO
Any Input, except BI/ RBO
BI / RBO
BI / RBO (Note 1)
(V CC = 5.0 V, T A = 25 C)
Parameter
Parameter
Parameter
BI / RBO
a – g
a – g
a – g
Parameter
Parameter
54, 74
54, 74
54, 74
54
74
54
74
74
74
FAST AND LS TTL DATA
SN54/74LS248
– 1.3
– 0.3
Min
2.0
2.4
2.4
Limits
– 0.65
5-406
– 2.0
0.25
0.35
0.25
0.35
Typ
4.2
4.2
25
– 1.5
– 0.4
– 1.2
– 2.0
Max
54, 74
54, 74
0.7
0.8
0.4
0.5
0.4
0.5
0.1
20
38
54
74
54
74
54
74
54
74
(unless otherwise specified)
Min
Unit
Unit
mA
mA
mA
mA
mA
mA
V
V
V
V
V
V
V
V
V
V
A
4.75
– 55
Min
4.5
Limits
0
Guaranteed Input HIGH Voltage for
All Inputs
Guaranteed Input LOW Voltage for
Guaranteed Input LOW Voltage for
All Inputs
All Inputs
V CC = MIN, I IN = – 18 mA
V CC = MIN, I OH = MAX, V IN = V IH
V CC = MIN, I OH = MAX, V IN = V IH
or V IL per Truth Table
or V IL per Truth Table
V CC = MIN, V O = 0.85 V,
Input Conditions as for V OH
I OL = 2.0 mA
I OL = 6.0 mA
I OL = 1.6 mA
I OL = 3.2 mA
V CC = MAX, V IN = 2.7 V
V CC = MAX, V IN = 7.0 V
V CC = MAX, V IN = 0.4 V
V CC = MAX, V IN = 0.4 V
V CC = MAX
V CC = MAX
Typ
Max
100
100
100
100
Typ
5.0
5.0
25
25
Test Conditions
Test Conditions
Unit
Unit
ns
ns
V CC = MIN, V IH = 2.0 V,
V CC = MIN, V IH = 2.0 V,
V IL = per Truth Table
V IL = per Truth Table
V IL = per Truth Table
– 100
Max
5.25
– 50
125
5.5
1.6
3.2
2.0
6.0
70
Test Conditions
Test Conditions
R L = 4.0 k
R L = 6.0 k
C L = 15 pF
C L = 15 pF
Unit
mA
V
C
A

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