Fairchild DM81LS95AN 3-state octal buffer Datasheet

Revised May 1999
DM81LS95A • DM81LS96A • DM81LS97A
3-STATE Octal Buffer
General Description
Features
These devices provide eight, two-input buffers in each
package. All employ 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
DM81LS95A and DM81LS97A present true data at the outputs, while the DM81LS96A is inverting. On the
DM81LS95A and DM81LS96A versions, all eight 3-STATE
enable lines are common, with access through a 2-input
NOR gate. On the DM81LS97A version, four buffers are
enabled from one common line, and the other four buffers
are enabled form another common line. In all cases the
outputs are placed in the 3-STATE condition by applying a
high logic level to the enable pins.
■ Typical power dissipation
DM81LS95A, DM81LS97A
80 mW
DM81LS96A
65 mW
■ Typical propagation delay
DM81LS95A, DM81LS97A
15 ns
DM81LS96A
10 ns
■ Low power-Schottky, 3-STATE technology
Ordering Code:
Order Number
DM81LS95AWM
Package Number
Package Description
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
DM81LS95AN
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
DM81LS96AWM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
DM81LS96AN
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
DM81LS97AN
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Pin Descriptions
DM81LS95A and DM92LS96A
Pin Names
A1–A8
Descriptions
Inputs
Y1–Y8
Outputs
G1–G2
Active LOW Output Enables (Note 1)
Note 1: Both G1 and G2 must be LOW for outputs to be enabled.
DM81LS97A
Pin Names
A1–A8
© 1999 Fairchild Semiconductor Corporation
DS006435
Descriptions
Inputs
Y1–Y8
Outputs
G1
Active LOW Output Enable (Y1–Y4)
G2
Active LOW Output Enable (Y5–Y8)
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DM81LS95A • DM81LS96A • DM81LS97A 3-STATE Octal Buffer
September 1991
DM81LS95A • DM81LS96A • DM81LS97A
Logic Symbols
Truth Tables
DM81LS95A
DM81LS95A
Inputs
Output
G1
G2
A
Y
H
X
X
Hi-Z
X
H
X
Hi-Z
L
L
H
H
L
L
L
L
DM81LS96A
DM81LS96A
Inputs
Output
G1
G2
A
Y
H
X
X
Hi-Z
X
H
X
Hi-Z
L
L
H
L
L
L
L
H
DM81LS97A
DM81LS97A
Inputs
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2
Output
G1
A1–A4
Y1–Y4
H
X
Hi-Z
L
H
H
L
L
L
G2
A5–A6
Y5–Y8
H
X
Hi-Z
L
H
H
L
L
L
Supply Voltage
7V
Input Voltage
7V
Note 2: 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 tables are not guaranteed at the absolute maximum ratings.
The Recommended Operating Conditions table will define the conditions
for actual device operation.
0°C to +70°C
Operating Free Air Temperature Range
−65°C to +150°C
Storage Temperature Range
Recommended Operating Conditions
Symbol
Parameter
Min
Nom
Max
4.75
5
5.25
Units
VCC
Supply Voltage
VIH
HIGH Level Input Voltage
VIL
LOW Level Input Voltage
0.8
V
IOH
HIGH Level Output Current
−5.2
mA
IOL
LOW Level Output Current
24
mA
TA
Free Air Operating Temperature
70
°C
2
0
3
V
V
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DM81LS95A • DM81LS96A • DM81LS97A
Absolute Maximum Ratings(Note 2)
DM81LS95A • DM81LS96A • DM81LS97A
DC Electrical Characteristics
DM81LS95A and DM81LS97A
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
VI
Input Clamp Voltage
VCC = Min, II = −18 mA
VOH
HIGH Level Output Voltage
VCC = Min, IOH = Max
VOL
LOW Level Output Voltage
VCC = Min, IOL = Max
Typ
Min
(Note 3)
VCC = Max, VI = 7V
HIGH Level Input Current
VCC = Max, VI = 2.7V
LOW Level Input Current
VCC = Max
VI = 0.5V
VI = 0.4V
IOZH
Off-State Output Current
VCC = Max, VO = 2.4V
with HIGH Level Output
VIH = Min, VIL = Max
V
0.4
Input Voltage
IIL
V
0.5
IOL = 12 mA, VCC = Min
IIH
−1.5
V
IOL = Max, VIH = Min
Input Current @ Max
Units
2.7
VIL = Max, VIH = Min
II
Max
0.1
mA
20
µA
A (Note 4)
−20
A (Note 5)
−50
G
−50
µA
20
µA
−20
µA
−100
mA
26
mA
Voltage Applied
IOZL
Off-State Output Current
VCC = Max, VO = 0.4V
with LOW Level Output
VIH = Min, VIL = Max
Voltage Applied
IOS
ICC
Short Circuit
VCC = Max
Output Current
(Note 6)
Supply Current
VCC = Max (Note 4)
−20
16
Note 3: All typicals are at VCC = 5V, TA = 25°C.
Note 4: Both G inputs are at 2V.
Note 5: Both G inputs are at 0.4V.
Note 6: Not more than one output should be shorted at a time, and the duration should not exceed one second.
AC Electrical Characteristics
DM81LS95A and DM81LS97A
VCC = 5V, TA = 25°C
RL = 667 Ω
Symbol
CL = 50 pF
Parameter
Min
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
tPZH
Output Enable Time
to HIGH Level Output
tPZL
Output Enable Time
to LOW Level Output
tPHZ
Output Disable Time
from HIGH Level Output (Note 7)
tPLZ
Output Disable Time
from LOW Level Output (Note 7)
Note 7: CL = 5 pF.
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CL = 150 pF
Max
Min
Units
Max
16
25
ns
28
40
ns
25
30
ns
30
42
ns
20
ns
27
ns
DM81LS96A
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
VI
Input Clamp Voltage
VCC = Min, II = −18 mA
VOH
HIGH Level Output Voltage
VCC = Min, IOH = Max
VOL
LOW Level Output Voltage
VCC = Min, IOL = Max
Typ
Min
(Note 8)
VCC = Max, VI = 7V
HIGH Level Input Current
VCC = Max, VI = 2.7V
LOW Level Input Current
VCC = Max
VI = 0.5V
VI = 0.4V
IOZH
Off-State Output Current
VCC = Max, VO = 2.4V
with HIGH Level Output
VIH = Min, VIL = Max
V
0.4
Input Voltage
IIH
V
0.5
IOL = 12 mA, VCC = Min
IIL
−1.5
V
IOL = Max, VIH = Min
Input Current @ Max
Units
2.7
VIL = Max, VIH = Min
II
Max
0.1
mA
20
µA
A (Note 9)
−20
A (Note 10)
−50
G
−50
µA
20
µA
−20
µA
Voltage Applied
IOZL
Off-State Output Current
VCC = Max, VO = 0.4V
with LOW Level Output
VIH = Min, VIL = Max
Voltage Applied
IOS
ICC
Short Circuit
VCC = Max
Output Current
(Note 11)
Supply Current
VCC = Max (Note 10)
−20
13
−100
mA
21
mA
Note 8: All typicals are at VCC = 5V, TA = 25°C.
Note 9: Both G inputs are at 2V.
Note 10: Both G inputs are at 0.4V.
Note 11: Not more than one output should be shorted at a time, and the duration should not exceed one second.
AC Electrical Characteristics
DM81LS96A
VCC = 5V, TA = 25°C
RL = 667 Ω
Symbol
CL = 50 pF
Parameter
Min
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
tPZH
Output Enable Time
to HIGH Level Output
tPZL
Output Enable Time
to LOW Level Output
tPHZ
Output Disable Time
from HIGH Level Output (Note 12)
tPLZ
Output Disable Time
from LOW Level Output (Note 12)
CL = 150 pF
Max
Min
Units
Max
10
16
ns
17
30
ns
15
30
ns
35
45
ns
20
ns
27
ns
Note 12: CL = 5 pF.
5
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DM81LS95A • DM81LS96A • DM81LS97A
DC Electrical Characteristics
DM81LS95A • DM81LS96A • DM81LS97A
Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
Package Number M20B
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6
DM81LS95A • DM81LS96A • DM81LS97A 3-STATE Octal Buffer
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Package Number N20A
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
2. A critical component in any component of a life support
device or system whose failure to perform can be reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the
user.
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