February 1986
DS16149/DS36149, DS16179/DS36179 Hex MOS Drivers
DS16149/DS36149, DS16179/DS36179 Hex MOS Drivers
General Description
The DS16149/DS36149 and DS16179/DS36179 are Hex
MOS drivers with outputs designed to drive large capacitive
loads up to 500 pF associated with MOS memory systems.
PNP input transistors are employed to reduce input currents
allowing the large fan-out to these drivers needed in memory systems. The circuit has Schottky-clamped transistor logic for minimum propagation delay, and a disable control that
places the outputs in the logic ‘‘1’’ state (see truth table).
This is especially useful in MOS RAM applications where a
set of address lines has to be in the logic ‘’1’’ state during
refresh.
The DS16149/DS36149 has a 15 X resistor in series with
the outputs to dampen transients caused by the fast-switching output. The DS16179/DS36179 has a direct low impedance output for use with or without an external resistor.
Schematic Diagram
Features
Y
High speed capabilities
Typ 9 ns driving 50 pF
#
Typ 29 ns driving 500 pF
#
Y
Built-in 15 X damping resistor (DS16149/DS36149)
Y
Same pin-out as DM8096 and DM74366
TL/F/7553– 1
C
1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.
TL/F/7553
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage 7.0V
Logical ‘‘1’’ Input Voltage 7.0V
Logical ‘‘0’’ Input Voltage
Storage Temperature Range
b
b
1.5V
65§Ctoa150§C
Operating Conditions
Supply Voltage (V
Temperature (T
DS16149, DS16179
CC
)
A
DS36149, DS36179 0
Min Max Units
) 4.5 5.5 V
b
55
a
125
a
70
C
§
C
§
Maximum Power Dissipation* at 25§C
Cavity Package 1371 mW
Molded Package 1280 mW
Lead Temperature (Soldering 10 seconds) 300
*Derate cavity package 9.1 mW/§C above 25§C; derate molded package
C above 25§C.
10.2 m/W
§
C
§
DC Electrical Characteristics (Notes 2 and 3)
Symbol Parameter Conditions Min Typ Max Units
VIN(1) Logical ‘‘1’’ Input Voltage 2.0 V
VIN(0) Logical ‘‘0’’ Input Voltage 0.8 V
IIN(1) Logical ‘‘1’’ Input Current V
IIN(0) Logical ‘‘0’’ Input Current V
V
CLAMP
V
OH
V
OL
V
OH
V
OL
I
ID
I
OD
I
CC
Input Clamp Voltage V
Logical ‘‘1’’ Output Voltage
(No Load)
Logical ‘‘0’’ Output Voltage
(No Load)
Logical ‘‘1’’ Output Voltage DS16149 2.4 3.5 V
(With Load)
Logical ‘‘0’’ Output Voltage DS16149 0.6 1.1 V
(With Load)
Logical ‘‘1’’ Drive Current V
Logical ‘‘0’’ Drive Current V
Power Supply Current Disable Inputse0V
e
5.5V, V
CC
e
5.5V, V
CC
e
4.5V, I
CC
e
4.5V, I
V
CC
e
V
4.5V, I
CC
e
4.5V, I
V
CC
e
4.5V, I
V
CC
e
4.5V, V
CC
e
4.5V, V
CC
e
V
5.5V
CC
e
5.5V 0.1 40 mA
IN
IN
OH
OL
OH
IN
e
eb
eb
e
eb
0.5V
18 mA
10 mA
10 mA
1.0 mA
DS16149/DS16179 3.4 4.3 V
DS36149/DS36179 3.5 4.3 V
DS16149/DS16179 0.25 0.4 V
DS36149/DS36179 0.25 0.35 V
DS16179 2.5 3.5 V
DS36149 2.6 3.5 V
b
b
50
250 mA
b
0.75b1.2 V
DS36179 2.7 3.5 V
e
20 mA
OL
DS16179 0.4 0.5 V
DS36149 0.6 1.0 V
DS36179 0.4 0.5 V
e
0V, (Note 4)
OUT
e
4.5V, (Note 4) 150 mA
OUT
All Other Inputs
e
3V
b
250 mA
33 60 mA
All Inputse0V 14 20 mA
Switching Characteristics (V
CC
e
5V, T
e
25§C) (Note 4)
A
Symbol Parameter Conditions Min Typ Max Units
e
t
g
S
t
’
S
t
F
Storage Delay Negative Edge
Storage Delay Positive Edge
Fall Time
Figure 1
(
(
Figure 1
Figure 1
(
C
50 pF 4.5 7 ns
L
)
)
)
e
C
500 pF 7.5 12 ns
L
e
50 pF 5 8 ns
C
L
e
C
500 pF 8 13 ns
L
e
C
50 pF 5 8 ns
L
e
C
500 pF 22 35 ns
L
2
Switching Characteristics (V
CC
e
5V, T
e
25§C) (Note 4) (Continued)
A
Symbol Parameter Conditions Min Typ Max Units
Figure 2
Figure 3
e
25§C and V
e
50 pF 6 9 ns
L
e
C
500 pF 26 35 ns
L
)
)
e
5V.
CC
t
R
t
LH
t
HL
Note 1: ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed. Except for ‘‘Operating Temperature Range’’
they are not meant to imply that the devices should be operated at these limits. The table of ‘‘Electrical Characteristics’’ provides conditions for actual device
operation.
Note 2: Unless otherwise specified min/max limits apply across the
a
70§C range for the DS36149 and DS36179. All typical values are for T
Note 3: All currents into device pins shown as positive, out of device pins as negative, all voltages referenced to ground unless otherwise noted. All values shown
as max or min on absolute value basis.
Note 4: When measuring output drive current and switching response for the DS16179 and DS36179 a 15 X resistor should be placed in series with each output.
This resistor is internal to the DS16149/DS36149 and need not be added.
Rise Time (
Delay from Disable Input R
to Logical ‘‘1’’ C
Delay from Disable Input R
to Logical ‘‘0’’ C
Figure 1
)C
e
2kXto Gnd, 15 22 ns
L
e
50 pF, (
L
e
2kXto VCC,1118ns
L
e
50 pF, (
L
b
55§Ctoa125§C temperature range for the DS16149 and DS16179 and across the 0§Cto
A
Connection Diagram
Dual In-Line Package
Truth Table
Disable Input
DIS 1 DIS2
000 1
001 0
01X 1
10X 1
11X 1
e
X
Don’t care
TL/F/7553– 2
Top View
Order Number DS16149J, DS36149J, DS16179J,
DS36179J, DS36149N or DS36179N
See NS Package Number J16A or N16A
AC Test Circuits and Switching Time Waveforms
t
,t
,tR,t
g
g
S
S
F
Input Output
FIGURE 1
3
TL/F/7553– 3
AC Test Circuits and Switching Time Waveforms (Continued)
*Internal on DS16149 and DS36149
Note 1: The pulse generator has the following characteristics: Z
Note 2: C
includes probe and jig capacitance.
L
Typical Applications
FIGURE 2
FIGURE 3
e
50 X and PRRs1 MHz. Rise and fall times between 10% and 90% pointss5 ns.
OUT
TL/F/7553– 4
TL/F/7553– 5
TL/F/7553– 6
4
Physical Dimensions inches (millimeters)
Ceramic Dual-In-Line Package (J)
Order Number DS16149J, DS36149J
DS16179J or DS36179J
NS Package Number J16A
5
Physical Dimensions inches (millimeters) (Continued)
Molded Dual-In-Line Package (N)
Order Number DS36149N, DS36149N
NS Package Number N16A
DS16149/DS36149, DS16179/DS36179 Hex MOS Drivers
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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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