SN74LS256D MOTOROLA [Motorola, Inc], SN74LS256D Datasheet - Page 3

• Manufacturer Part Number: SN74LS256D
• Description: DUAL 4-BIT ADDRESSABLE LATCH
• Manufacturer: MOTOROLA [Motorola, Inc]

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 OL
V OL
I IH
I IH
I IL
I OS
I CC
t PLH
t PHL
t PLH
t PHL
t PLH
t PHL
t PHL
Symbol
Symbol
Symbol
Symbol
Symbol
Supply Voltage
Operating Ambient Temperature Range
Output Current — High
Output Current — Low
Input HIGH Voltage
Input LOW Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH Voltage
Output LOW Voltage
Output LOW Voltage
Input HIGH Current
Input LOW Current
Short Circuit Current (Note 1)
Power Supply Current
Turn-Off Delay, Enable to Output
Turn-On Delay, Enable to Output
Turn-Off Delay, Data to Output
Turn-On Delay, Data to Output
Turn-Off Delay, Address to Output
Turn-On Delay, Address to Output
Turn-On Delay, Clear to Output
Others
E Input
Others
E Input
Others
E Input
(T A = 25 C)
Parameter
Parameter
Parameter
Parameter
Parameter
54, 74
54, 74
54
74
74
FAST AND LS TTL DATA
SN54/74LS256
– 20
Min
2.0
2.4
Min
Limits
– 0.65
Limits
5-423
0.25
0.35
Typ
3.5
Typ
20
16
20
13
20
14
12
– 100
– 1.5
– 0.4
– 0.8
Max
Max
54, 74
0.7
0.8
0.4
0.5
0.1
0.2
20
40
30
27
24
30
20
30
24
23
54
74
54
74
54
74
(unless otherwise specified)
Unit
Unit
Unit
Unit
mA
mA
mA
mA
ns
ns
ns
ns
ns
ns
ns
V
V
V
V
V
V
V
A
4.75
– 55
Min
4.5
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
or V IL per Truth Table
I OL = 4.0 mA
I OL = 8.0 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 CC = MAX
Figure 1
Figure 2
Figure 3
Figure 5
Typ
5.0
5.0
25
25
Test Conditions
Test Conditions
Test Conditions
Test Conditions
V CC = V CC MIN,
V IN = V IL or V IH
V IN = V IL or V IH
per Truth Table
per Truth Table
– 0.4
Max
5.25
125
5.5
4.0
8.0
70
V CC = 5.0 V,
V CC = 5.0 V,
C L = 15 pF
C L = 15 pF
C L = 15 pF
Unit
mA
mA
V
C