NSC DM74LS466 Tri-state octal buffer Datasheet

DM74LS465 (DM81LS95A)/DM74LS466 (DM81LS96A)/
DM74LS467 (DM81LS97A)/DM74LS468 (DM81LS98A)
TRI-STATEÉ Octal Buffer
General Description
These devices provide eight, two-input buffers in each package. All employ the newest low-power-Schottky TTL technology. One of the two inputs to each buffer is used as a
control line to gate the output into the high-impedance
state, while the other input passes the data through the buffer. The ’LS465 and ’LS467 present true data at the outputs,
while the ’LS466 and ’LS468 are inverting. On the ’LS465
and ’LS466 versions, all eight TRI-STATE enable lines are
common, with access through a 2-input NOR gate. On the
’LS467 and ’LS468 versions, four buffers are enabled from
one common line, and the other four buffers are enabled
from another common line. In all cases the outputs are
placed in the TRI-STATE condition by applying a high logic
level to the enable pins. These devices represent octal, low
power-Schottky versions of the very popular DM54/74365,
366, 367, and 368 (DM8095, 96, 97, and 98) TRI-STATE
hex buffers.
Features
Y
Y
Y
Y
Octal versions of popular DM74365, 366, 367, and 368
(DM8095, 96, 97 and 98)
Typical power dissipation
LS465, 467, (LS95A, 97A) 80 mW
LS466, 468, (LS96A, 98A) 65 mW
Typical propagation delay
LS465, 467 (LS95A, 97A) 15 ns
LS466, 468 (LS96A, 98A) 10 ns
Low power-Schottky, TRI-STATE technology
Connection Diagrams
Dual-In-Line Packages
TL/F/6435 – 1
TL/F/6435 – 2
TL/F/6435 – 3
TL/F/6435 – 4
Order Numbers DM74LS465WM/DM81LS95AWM, DM74LS465N/DM81LS95AN,
DM74LS466WM/DM81LS96AWM, DM74LS466N/DM81LS96AN,
DM74LS467WM/DM81LS97AWM, DM74LS467N/DM81LS97AN,
DM74LS468WM/DM81LS98AWM or DM74LS468N/DM81LS98AN
See NS Package Number M20B or N20A
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.
C1995 National Semiconductor Corporation
TL/F/6435
RRD-B30M105/Printed in U. S. A.
DM74LS465 (DM81LS95A)/DM74LS466 (DM81LS96A)/DM74LS467 (DM81LS97A)/
DM74LS468 (DM81LS98A) TRI-STATE Octal Buffer
September 1991
Absolute Maximum Ratings (Note)
Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature Range
DM74LS/DM81LS
Storage Temperature Range
Note: The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. the
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings.
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation.
0§ C to a 70§ C
b 65§ C to a 150§ C
Recommended Operating Conditions
Symbol
Parameter
VCC
Supply Voltage
VIH
High Level Input Voltage
VIL
Low Level Input Voltage
IOH
High Level Output Current
IOL
Low Level Output Current
TA
Free Air Operating Temperature
Min
Nom
Max
4.75
5
5.25
Units
V
2
V
0
0.8
V
b 5.2
mA
24
mA
70
§C
’LS465 (’LS95A) and ’LS467 (’LS97A) Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
Typ
(Note 1)
Max
Units
b 1.5
V
VI
Input Clamp Voltage
VCC e Min, II e b18 mA
VOH
High Level Output
Voltage
VCC e Min, IOH e Max
VIL e Max, VIH e Min
VOL
Low Level Output
Voltage
VCC e Min, IOL e Max
VIL e Max, VIH e Min
0.5
IOL e 12 mA, VCC e Min
0.4
0.1
mA
20
mA
II
Input Current @ Max
Input Voltage
VCC e Max, VI e 7V
IIH
High Level Input Current
VCC e Max, VI e 2.7V
IIL
Low Level Input
Current
VCC e Max
IOZH
2.7
V
VI e 0.5V
A (Note 3)
b 20
VI e 0.4V
A (Note 4)
b 50
G
b 50
V
mA
Off-State Output Current
with High Level Output
Voltage Applied
VCC e Max, VO e 2.4V
VIH e Min, VIL e Max
20
mA
Off-State Output Current
with Low Level Output
Voltage Applied
VCC e Max, VO e 0.4V
VIH e Min, VIL e Max
b 20
mA
IOS
Short Circuit
Output Current
VCC e Max
(Note 2)
b 100
mA
ICC
Supply Current
VCC e Max (Note 3)
26
mA
IOZL
b 20
16
Note 1: All typicals are at VCC e 5V, TA e 25§ C.
Note 2: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 3: Both G inputs are at 2V.
Note 4: Both G inputs are at 0.4V.
2
’LS465 and ’LS467 Switching Characteristics
VCC e 5V, TA e 25§ C
RL e 667X
Symbol
Parameter
CL e 50 pF
Min
CL e 150 pF
Max
Min
Units
Max
tPLH
Propagation Delay Time
Low to High Level Output
16
25
ns
tPHL
Propagation Delay Time
High to Low Level Output
28
40
ns
tPZH
Output Enable Time
to High Level Output
25
30
ns
tPZL
Output Enable Time
to Low Level Output
30
42
ns
tPHZ
Output Disable Time
from High Level Output (Note 1)
20
ns
tPLZ
Output Disable Time
from Low Level Output (Note 1)
27
ns
Note 1: CL e 5 pF.
’LS466 (’LS96A) and ’LS468 (’LS98A) Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
Typ
(Note 2)
Max
Units
b 1.5
V
VI
Input Clamp Voltage
VCC e Min, II e b18 mA
VOH
High Level Output
Voltage
VCC e Min, IOH e Max
VIL e Max, VIH e Min
VOL
Low Level Output
Voltage
VCC e Min, IOL e Max
VIL e Max, VIH e Min
0.5
IOL e 12 mA, VCC e Min
0.4
VCC e Max, VI e 7V
0.1
mA
20
mA
II
Input Current
Input Voltage
IIH
High Level Input Current
VCC e Max, VI e 2.7V
IIL
Low Level Input
Current
VCC e Max
IOZH
@ Max
2.7
V
VI e 0.5V
A (Note 4)
b 20
VI e 0.4V
A (Note 5)
b 50
G
b 50
V
mA
Off-State Output Current
with High Level Output
Voltage Applied
VCC e Max, VO e 2.4V
VIH e Min, VIL e Max
20
mA
Off-State Output Current
with Low Level Output
Voltage Applied
VCC e Max, VO e 0.4V
VIH e Min, VIL e Max
b 20
mA
IOS
Short Circuit
Output Current
VCC e Max
(Note 3)
b 100
mA
ICC
Supply Current
VCC e Max (Note 5)
21
mA
IOZL
b 20
13
Note 2: All typicals are at VCC e 5V, TA e 25§ C.
Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 4: Both G inputs are at 2V.
Note 5: Both G inputs are at 0.4V.
3
’LS466 and ’LS468 Switching Characteristics
for test waveforms and output load. VCC e 5V, TA e 25§ C
RL e 667X
Symbol
Parameter
CL e 50 pF
Min
CL e 150 pF
Max
Min
Units
Max
tPLH
Propagation Delay Time
Low to High Level Output
10
16
ns
tPHL
Propagation Delay Time
High to Low Level Output
17
30
ns
tPZH
Output Enable Time
to High Level Output
15
30
ns
tPZL
Output Enable Time
to Low Level Output
35
45
ns
tPHZ
Output Disable Time
from High Level Output (Note 1)
20
ns
tPLZ
Output Disable Time
from Low Level Output (Note 1)
27
ns
Note 1: CL e 5 pF.
Function Tables
LS465 (LS95A)
Inputs
G1
G2
A
H
X
L
L
X
H
L
L
X
X
H
L
LS466 (LS96A)
Output
Y
Inputs
Hi-Z
Hi-Z
H
L
G1
G2
A
H
X
L
L
X
H
L
L
X
X
H
L
LS467 (LS97A)
Inputs
G
A
H
L
L
X
H
L
Output
Y
Hi-Z
Hi-Z
L
H
LS468 (LS98A)
Output
Y
Inputs
Hi-Z
H
L
H e High Logic Level
L e Low Logic Level
X e Either High or Low Logic Level
Hi-Z e High Impedance (Off) State
4
G
A
H
L
L
X
H
L
Output
Y
Hi-Z
L
H
Physical Dimensions inches (millimeters)
20-Lead Wide Small Outline Molded Package (M)
Order Numbers DM74LS465WM/DM81LS95AWM, DM74LS466WM/DM81LS96AWM,
DM74LS467WM/DM81LS97AWM or DM74LS468WM/DM81LS98AWM
NS Package Number M20B
5
DM74LS465 (DM81LS95A)/DM74LS466 (DM81LS96A)/DM74LS467 (DM81LS97A)/
DM74LS468 (DM81LS98A) TRI-STATE Octal Buffer
Physical Dimensions inches (millimeters) (Continued)
20-Lead Molded Dual-In-Line Package (N)
Order Numbers DM74LS465N/DM81LS95AN, DM74LS466N/DM81LS96AN,
DM74LS467N/DM81LS97AN or DM74LS468N/DM81LS98AN
NS Package Number N20A
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