NSC DS1649 Hex tri-statee ttl to mos driver Datasheet

DS1649/DS3649/DS1679/DS3679 Hex TRI-STATEÉ TTL
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 reduce input currents allowing the large fan-out to these drivers needed in memory systems. The circuit has Schottkyclamped transistor logic for minimum propagation delay,
and TRI-STATE outputs for bus operation.
The DS1649/DS3649 has a 15X resistor in series with the
outputs to dampen transients caused by the fast-switching
output. The DS1679/DS3679 has a direct low impedance
output for use with or without an external resistor.
Features
Y
Y
Y
Y
High speed capabilities
# Typ 9 ns driving 50 pF
# Typ 30 ns driving 500 pF
TRI-STATE outputs for data bussing
Built-in 15X damping resistor (DS1649/DS3649)
Same pin-out as DM8096 and DM74366
TRI-STATEÉ is a registered trademark of National Semiconductor Corp.
Schematic Diagram
Truth Table
Disable Input
DIS 1
DIS 2
0
0
0
1
1
0
0
1
0
1
Input Output
0
1
X
X
X
1
0
Hi-Z
Hi-Z
Hi-Z
X e Don’t care
Hi-Z e 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
C1995 National Semiconductor Corporation
TL/F/7515
TL/F/7515 – 3
RRD-B30M105/Printed in U. S. A.
DS1649/DS3649/DS1679/DS3679 Hex TRI-STATE TTL to MOS Drivers
March 1986
Absolute Maximum Ratings (Note 1)
Operating Conditions
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage
Logical ‘‘1’’ Input Voltage
Logical ‘‘0’’ Input Voltage
Storage Temperature Range
Maximum Power Dissipation* at 25§ C
Cavity Package
Molded Package
Lead Temperature (Soldering, 10 sec.)
Supply Voltage (VCC
Temperature (TA)
DS1649, DS1679
DS3649, DS3679
7.0V
7.0V
Min
4.5
Max
5.5
Units
V
b 55
a 125
a 70
§C
§C
0
*Derate cavity package 9.1 mW/§ C above 25§ C; derate molded package
10.2 mW/§ C above 25§ C.
b 1.5V
b 65§ C to a 150§ C
1371 mW
1280 mW
300§ C
Electrical Characteristics (Note 2 and 3)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
0.8
V
VIN(1)
Logical ‘‘1’’ Input Voltage
VIN(0)
Logical ‘‘0’’ Input Voltage
IIN(1)
Logical ‘‘1’’ Input Current
VCC e 5.5V, VIN e 5.5V
0.1
40
mA
IIN(0)
Logical ‘‘0’’ Input Current
VCC e 5.5V, VIN e 0.5V
b 50
b 250
mA
VCLAMP
Input Clamp Voltage
VCC e 4.5V, IIN e b18 mA
b 0.75
b 1.2
V
VOH
Logical ‘‘1’’ Output Voltage
(No Load)
VCC e 4.5V, IOH e b10 mA
VOL
Logical ‘‘0’’ Output Voltage
(No Load)
VCC e 4.5V, IOL e 10 mA
DS1649/DS1679
VOH
Logical ‘‘1’’ Output Voltage
(With Load)
VCC e 4.5V, IOH e b1.0 mA
DS1649
VOL
Logical ‘‘0’’ Output Voltage
(With Load)
2.0
DS1649/DS1679
2.7
3.6
DS3649/DS3679
2.8
3.6
DS3649/DS3679
VCC e 4.5V, IOL e 20 mA
V
2.4
V
0.25
0.4
0.25
0.35
3.5
V
V
V
DS1679
2.5
3.5
V
DS3649
2.6
3.5
V
DS3679
2.7
3.5
V
DS1649
0.6
1.1
V
DS1679
0.4
0.5
V
DS3649
0.6
1.0
V
DS3679
0.4
0.5
V
I1D
Logical ‘‘1’’ Drive Current
VCC e 4.5V, VOUT e 0V (Note 4)
I0D
Logical ‘‘0’’ Drive Current
VCC e 4.5V, VOUT e 4.5V (Note 4)
Hi-Z
TRI-STATE Output Current
VOUT e 0.4V to 2.4V, DIS1 or DIS2 e 2.0V
ICC
Power Supply Current
VCC e 5.5V
b 250
mA
150
b 40
mA
40
mA
One DIS Input e 3.0V
All Other Inputs e X
42
75
mA
All Inputs e 0V
11
20
mA
2
Switching Characteristics (VCC e 5V, TA e 25§ C) (Note 4)
Symbol
tS g
tS g
tF
tR
Parameter
Conditions
(Figure 1 )
Storage Delay Negative Edge
(Figure 1 )
Storage Delay Positive Edge
(Figure 1 )
Fall Time
(Figure 1 )
Rise Time
Typ
Max
Units
CL e 50 pF
Min
4.5
7
ns
CL e 500 pF
7.5
12
ns
CL e 50 pF
5
8
ns
CL e 500 pF
8
13
ns
CL e 50 pF
5
8
ns
CL e 500 pF
22
35
ns
CL e 50 pF
6
9
ns
CL e 500 pF
21
35
ns
tZL
Delay from Disable Input to Logical ‘‘0’’
Level (from High Impedance State)
CL e 50 pF
RL e 2 kX to VCC (Figure 2 )
10
15
ns
tZH
Delay from Disable Input to Logical ‘‘1’’
Level (from High Impedance State)
CL e 50 pF
RL e 2 kX to GND (Figure 2 )
8
15
ns
tLZ
Delay from Disable Input to High Impedance
State (from Logical ‘‘0’’ Level)
CL e 50 pF
RL e 400X to VCC (Figure 3 )
15
25
ns
tHZ
Delay from Disable Input to High Impedance
State (from Logical ‘‘1’’ Level)
CL e 50 pF
RL e 400X to GND (Figure 3 )
10
25
ns
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 b 55§ C to a 125§ C temperature range for the DS1649 and DS1679 and across the 0§ C to
a 70§ C range for the DS3649 and DS3679. All typical values are for TA e 25§ C and VCC e 5V.
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
tS g , tS ’ , tR, tF
TL/F/7515 – 5
TL/F/7515 – 4
FIGURE 1
3
AC Test Circuits and Switching Time Waveforms (Continued)
tZH
tZL
TL/F/7515 – 6
TL/F/7515 – 7
TL/F/7515 – 8
FIGURE 2
tLZ
tHZ
TL/F/7515 – 9
TL/F/7515 – 10
*Internal on DS1649 and DS3649
TL/F/7515 – 11
FIGURE 3
Note 1: The pulse generator has the following characteristics: ZOUT e 50X and PRR s 1 MHz. Rise and fall times between 10% and 90% points s 5 ns.
Note 2: CL includes probe and jig capacitance.
4
Physical Dimensions inches (millimeters)
Ceramic Dual-In-Line Package (J)
Order Number DS1649J, DS3649J,
DS1679J or DS3679J
NS Package Number J16A
5
DS1649/DS3649/DS1679/DS3679 Hex TRI-STATE TTL to MOS Drivers
Physical Dimensions inches (millimeters) (Continued)
Molded Dual-In-Line Package (N)
Order Number DS3649N or DS3679N
NS Package Number N16A
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