DS1679 [ETC]
;
| 型号： | DS1679 |
| 厂家： | 
ETC |
| 描述： |
|
| 文件： | 总6页 (文件大小：142K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
March 1986
DS1649/DS3649/DS1679/DS3679 Hex TRI-STATE TTL
É
to MOS Drivers
General Description
The DS1649/DS3649 and DS1679/DS3679 are Hex
TRI-STATE 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 re-
duce input currents allowing the large fan-out to these driv-
ers needed in memory systems. The circuit has Schottky-
clamped transistor logic for minimum propagation delay,
and TRI-STATE outputs for bus operation.
output. The DS1679/DS3679 has a direct low impedance
output for use with or without an external resistor.
Features
Y
High speed capabilities
#
Typ 9 ns driving 50 pF
Typ 30 ns driving 500 pF
#
TRI-STATE outputs for data bussing
Y
The DS1649/DS3649 has a 15X resistor in series with the
outputs to dampen transients caused by the fast-switching
Y
Built-in 15X damping resistor (DS1649/DS3649)
Y
Same pin-out as DM8096 and DM74366
TRI-STATEÉ is a registered trademark of National Semiconductor Corp.
Schematic Diagram
Truth Table
Disable Input
Input Output
DIS 1 DIS 2
0
0
0
1
1
0
0
1
0
1
0
1
1
0
X
X
X
Hi-Z
Hi-Z
Hi-Z
e
X
Don’t care
e
Hi-Z
TRI-STATE mode
*DS1649/DS3649 only
TL/F/7515–1
Connection Diagram
Typical Application
Dual-In-Line Package
TL/F/7515–2
Top View
Order Number DS1649J, DS3649J,
DS1679J, DS3679J, DS3649N or DS3679N
See NS Package Number J16A or N16A
TL/F/7515–3
RRD-B30M105/Printed in U. S. A.
C
1995 National Semiconductor Corporation
TL/F/7515
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Operating Conditions
Min
Max
Units
Supply Voltage (V
CC
4.5
5.5
V
Temperature (T )
A
b
a
125
Supply Voltage
7.0V
7.0V
1.5V
DS1649, DS1679
DS3649, DS3679
55
C
§
§
a
0
70
C
Logical ‘‘1’’ Input Voltage
Logical ‘‘0’’ Input Voltage
Storage Temperature Range
*Derate cavity package 9.1 mW/ C above 25 C; derate molded package
§
§
b
10.2 mW/ C above 25 C.
§
§
b
a
65 C to 150 C
§
§
Maximum Power Dissipation* at 25 C
Cavity Package
Molded Package
§
1371 mW
1280 mW
Lead Temperature (Soldering, 10 sec.)
300 C
§
Electrical Characteristics (Note 2 and 3)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
V
V
Logical ‘‘1’’ Input Voltage
Logical ‘‘0’’ Input Voltage
Logical ‘‘1’’ Input Current
Logical ‘‘0’’ Input Current
Input Clamp Voltage
2.0
IN(1)
IN(0)
IN(1)
IN(0)
0.8
40
V
e
e
e
e
e
e
I
I
V
V
V
V
5.5V, V
5.5V, V
5.5V
0.5V
0.1
mA
mA
V
CC
CC
CC
CC
IN
b
b
250
50
IN
e b
b
0.75
3.6
b
1.2
V
4.5V, I
4.5V, I
18 mA
CLAMP
OH
IN
e b
V
Logical ‘‘1’’ Output Voltage
(No Load)
10 mA
DS1649/DS1679
DS3649/DS3679
DS1649/DS1679
DS3649/DS3679
DS1649
2.7
2.8
V
OH
3.6
e
e
e
10 mA
V
V
Logical ‘‘0’’ Output Voltage
(No Load)
V
CC
V
CC
4.5V, I
4.5V, I
0.25
0.25
3.5
0.4
V
V
OL
OL
0.35
e b
Logical ‘‘1’’ Output Voltage
(With Load)
1.0 mA
2.4
2.5
2.6
2.7
V
OH
OH
DS1679
3.5
V
DS3649
3.5
V
DS3679
3.5
V
e
e
V
OL
Logical ‘‘0’’ Output Voltage
(With Load)
V
CC
4.5V, I
20 mA
DS1649
0.6
1.1
0.5
1.0
0.5
V
OL
DS1679
0.4
V
DS3649
0.6
V
DS3679
0.4
V
e
e
e
e
b
I
I
Logical ‘‘1’’ Drive Current
Logical ‘‘0’’ Drive Current
TRI-STATE Output Current
Power Supply Current
V
V
V
V
4.5V, V
4.5V, V
0V (Note 4)
250
mA
mA
mA
1D
0D
CC
OUT
4.5V (Note 4)
150
CC
OUT
e
e
b
40
Hi-Z
0.4V to 2.4V, DIS1 or DIS2
2.0V
40
75
20
OUT
e
CC
e
3.0V
e
I
5.5V One DIS Input
CC
42
11
mA
mA
All Other Inputs
X
e
All Inputs
0V
2
e
e
25 C) (Note 4)
Switching Characteristics (V
5V, T
§
CC
A
Symbol
Parameter
Conditions
Min
Typ
4.5
7.5
5
Max
7
Units
ns
e
e
e
e
e
e
e
e
t
t
t
t
Storage Delay Negative Edge
(Figure 1)
(Figure 1)
(Figure 1)
(Figure 1)
C
L
C
L
C
L
C
L
C
L
C
L
C
L
C
L
50 pF
g
S
S
F
R
500 pF
50 pF
12
8
ns
Storage Delay Positive Edge
Fall Time
ns
g
500 pF
50 pF
8
13
8
ns
5
ns
500 pF
50 pF
22
6
35
9
ns
Rise Time
ns
500 pF
21
35
ns
e
e
t
t
t
t
Delay from Disable Input to Logical ‘‘0’’
Level (from High Impedance State)
C
50 pF
ZL
ZH
LZ
HZ
L
10
8
15
15
25
25
ns
ns
ns
ns
R
2 kX to V (Figure 2)
CC
L
e
e
Delay from Disable Input to Logical ‘‘1’’
Level (from High Impedance State)
C
L
50 pF
R
2 kX to GND (Figure 2)
L
e
e
Delay from Disable Input to High Impedance
State (from Logical ‘‘0’’ Level)
C
L
50 pF
15
10
R
400X to V (Figure 3)
CC
L
e
e
Delay from Disable Input to High Impedance
State (from Logical ‘‘1’’ Level)
C
L
50 pF
R
400X to GND (Figure 3)
L
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.
b
a
Note 2: Unless otherwise specified min/max limits apply across the 55 C to 125 C temperature range for the DS1649 and DS1679 and across the 0 C to
§
§
25 C and V
§
a
e
e
5V.
CC
70 C range for the DS3649 and DS3679. All typical values are for T
§
§
A
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 DS1679 and DS3679 a 15X resistor should be placed in series with each output. This
resistor is internal to the DS1649/DS3649 and need not be added.
AC Test Circuits and Switching Time Waveforms
t
, t , t , t
’
S R F
g
S
TL/F/7515–5
TL/F/7515–4
FIGURE 1
3
AC Test Circuits and Switching Time Waveforms (Continued)
t
t
ZL
ZH
TL/F/7515–6
TL/F/7515–7
TL/F/7515–8
FIGURE 2
t
HZ
t
LZ
TL/F/7515–9
TL/F/7515–10
*Internal on DS1649 and DS3649
TL/F/7515–11
FIGURE 3
s
s
e
Note 1: The pulse generator has the following characteristics: Z
OUT
50X and PRR
1 MHz. Rise and fall times between 10% and 90% points
5 ns.
Note 2: C includes probe and jig capacitance.
L
4
Physical Dimensions inches (millimeters)
Ceramic Dual-In-Line Package (J)
Order Number DS1649J, DS3649J,
DS1679J or DS3679J
NS Package Number J16A
5
Physical Dimensions inches (millimeters) (Continued)
Molded Dual-In-Line Package (N)
Order Number DS3649N or DS3679N
NS Package Number N16A
LIFE SUPPORT POLICY
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DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL
SEMICONDUCTOR CORPORATION. As used herein:
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systems which, (a) are intended for surgical implant
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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.
2. A critical component is 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.
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