Page 1
TL/F/6572
DM54367 Hex TRI-STATE Buffers
June 1989
DM54367 Hex TRI-STATEÉBuffers
General Description
This device contains six independent gates each of which
performs a non-inverting buffer function. The outputs have
the TRI-STATE feature. When enabled, the outputs exhibit
the low impedance characteristics of a standard TTL output
with additional drive capability to permit the driving of bus
lines without external resistors. When disabled, both the
output transistors are turned off presenting a high-impedance state to the bus line. Thus the output will act neither as
a signficant load nor as a driver. To minimize the possibility
that two outputs will attempt to take a common bus to opposite logic levels, the disable time is shorter than the enable
time of the outputs.
Connection Diagram
Dual-In-Line Package
TL/F/6572– 1
Order Number DM54367J or DM54367W
See NS Package Number J16A or W16A
Function Table
YeA
Input Output
G AY
LL L
LH H
H X Hi-Z
HeHigh Logic Level
L
e
Low Logic Level
X
e
Either Low or High Logic Level
Hi-Z
e
TRI-STATE (Outputs are disabled)
TRI-STATEÉis a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.
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Absolute Maximum Ratings (Note)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage 7V
Input Voltage 5.5V
Operating Free Air Temperature
Range
b
55§Ctoa125§C
Storage Temperature Range
b
65§Ctoa150§C
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.
Recommended Operating Conditions
Symbol Parameter
DM54367
Units
Min Nom Max
V
CC
Supply Voltage 4.5 5 5.5 V
V
IH
High Level Input Voltage 2 V
V
IL
Low Level Input Voltage 0.8 V
I
OH
High Level Output Current
b
2mA
IOLLow Level Output Current 32 mA
T
A
Free Air Operating Temperature
b
55 125
§
C
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Symbol Parameter Conditions Min
Typ
Max Units
(Note 1)
V
I
Input Clamp Voltage V
CC
e
Min, I
I
eb
12 mA
b
1.5 V
V
OH
High Level Output V
CC
e
Min, I
OH
e
Max
2.4 3.1 V
Voltage V
IL
e
Max, V
IH
e
Min
V
OL
Low Level Output V
CC
e
Min, I
OL
e
Max
0.2 0.4 V
Voltage V
IH
e
Min, V
IL
e
Max
I
I
Input Current@Max V
CC
e
Max, V
I
e
5.5V
1mA
Input Voltage
I
IH
High Level Input Current V
CC
e
Max, V
I
e
2.4V 40 mA
I
IL
Low Level Input V
CC
e
Max A
b
40
Current V
I
e
0.5V (Note 4)
V
CC
e
Max A
b
1.6 mA
V
I
e
0.4V (Note 5)
V
CC
e
Max G
b
1.6
V
I
e
0.4V
I
OZH
Off-State Output Current V
CC
e
Max, V
O
e
2.4V
with High Level Output V
IH
e
Min, V
IL
e
Max 40 mA
Voltage Applied
I
OZL
Off-State Output Current V
CC
e
Max, V
O
e
0.4V
with Low Level Output V
IH
e
Min, V
IL
e
Max
b
40 mA
Voltage Applied
I
OS
Short Circuit Output Current V
CC
e
Max (Note 2)
b
40
b
115 mA
I
CC
Supply Current V
CC
e
Max (Note 3) 65 85 mA
Note 1: All typicals are at V
CC
e
5V, T
A
e
25§C.
Note 2: Not more than one output should be shorted at a time.
Note 3: I
CC
is measured with the data inputs grounded and the output controls at 4.5V.
Note 4: Both G
inputs are at 2V.
Note 5: Both G
inputs are at 0.4V.
2
Page 3
Switching Characteristics at V
CC
e
5V and T
A
e
25§C (See Section 1 for Test Waveforms and Output Load)
R
L
e
400X
Symbol Parameter C
L
e
5pF C
L
e
50 pF Units
Min Max Min Max
t
PLH
Propagation Delay Time
16 ns
Low to High Level Output
t
PHL
Propagation Delay Time
22 ns
High to Low Level Output
t
PZH
Output Enable Time
35 ns
to High Level Output
t
PZL
Output Enable Time
37 ns
to Low Level Output
t
PHZ
Output Disable Time
11 ns
from High Level Output
t
PLZ
Output Disable Time
27 ns
from Low Level Output
Physical Dimensions inches (millimeters)
16-Lead Ceramic Dual-In-Line Package (J)
Order Number DM54367J
NS Package Number J16A
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Page 4
DM54367 Hex TRI-STATE Buffers
Physical Dimensions inches (millimeters) (Continued)
16-Lead Ceramic Flat Package (W)
Order Number DM54367W
NS Package Number W16A
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failure to perform, when properly used in accordance support device or system, or to affect its safety or
with instructions for use provided in the labeling, can effectiveness.
be reasonably expected to result in a significant injury
to the user.
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