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DM74125N

Part # DM74125N
Description IC BUFF TRI-ST QD N-INV 14-DIP
Category Microcircuit
Availability In Stock
Qty 35
Qty Price
1 + $0.16508
Manufacturer Available Qty
National Semiconductor Corp
Date Code: 8810
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

TL/F/6540
54125/DM54125/DM74125 Quad TRI-STATE Buffers
June 1989
54125/DM54125/DM74125
Quad TRI-STATE
É
Buffers
General Description
This device contains four 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 at the high Logic level to per-
mit the driving of bus lines without external pull-up 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 significant 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.
Features
Y
Alternate Military/Aerospace device (54125) is avail-
able. Contact a National Semiconductor Sales Office/
Distributor for specifications.
Connection Diagram
Dual-In-Line Package
TL/F/65401
Order Number 54125DMQB, 54125FMQB, DM54125J, DM54125W or DM74125N
See NS Package Number J14A, N14A or W14B
Function Table
Y
e
A
Inputs Output
AC Y
LL L
HL H
X H Hi-Z
H
e
High Logic Level
L
e
Low Logic Level
X
e
Either Low or High Logic Level
Hi-Z
e
TRI-STATE (Outputs are disabled)
TRI-STATE
É
is a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.
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
DM54 and 54
b
55
§
Cto
a
125
§
C
DM74 0
§
Cto
a
70
§
C
Storage Temperature Range
b
65
§
Cto
a
150
§
C
Note:
The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran-
teed. 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
DM54125 DM74125
Units
Min Nom Max Min Nom Max
V
CC
Supply Voltage 4.5 5 5.5 4.75 5 5.25 V
V
IH
High Level Input Voltage 2 2 V
V
IL
Low Level Input Voltage 0.8 0.8 V
I
OH
High Level Output Current
b
2
b
5.2 mA
I
OL
Low Level Output Current 16 16 mA
T
A
Free Air Operating Temperature
b
55 125 0 70
§
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 3.3 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 Current V
CC
e
Max, V
I
e
0.4V
b
1.6 mA
I
IZL
Off-State Input Current V
CC
e
Max, V
I
e
0.4V
with Low Level Input
b
40 mA
Voltage Applied
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 V
CC
e
Max DM54
b
30
b
70
mA
Output Current (Note 2)
DM74
b
28
b
70
I
CC
Supply Current V
CC
e
Max (Note 3) 36 54 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 output control (C) inputs at 4.5V, the data inputs grounded, and the outputs open.
2
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
15 ns
Low to High Level Output
t
PHL
Propagation Delay Time
18 ns
High to Low Level Output
t
PZH
Output Enable Time to
18 ns
High Level Output
t
PZL
Output Enable Time to
25 ns
Low Level Output
t
PHZ
Output Disable Time from
8ns
High Level Output
t
PLZ
Output Disable Time from
14 ns
Low Level Output
Physical Dimensions inches (millimeters)
14-Lead Ceramic Dual-In-Line Package (J)
Order Number 54125DMQB or DM54125J
NS Package Number J14A
3
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