TL F 9499
54F74F2244
Octal
BufferLine
Driver
with
25
X
Series
Resistors
in
Outputs
August 1995
54F 74F2244
Octal Buffer Line Driver with 25X Series
Resistors in Outputs
General Description
The 'F2244 is an octal buffer line driver designed to drive
the capacitive inputs of MOS memory drivers address driv-
ers clock drivers and bus-oriented transmitters receivers
The 25X series resistors in the outputs reduce ringing and
eliminate the need for external resistors
Features
Y
TRI-STATE
outputs drive bus lines or buffer memory
address registers
Y
12 mA source current
Y
25X series resistors in outputs eliminate the need for
external resistors
Y
Designed to drive the capacitive inputs of MOS devices
Y
Guaranteed 4000V minimum ESD protection
Commercial
Military
Package
Package Description
Number
74F2244PC
N20B
20-Lead (0 300 Wide) Molded Dual-In-Line
54F2244DM (Note 2)
J20A
20-Lead Ceramic Dual-In-Line
74F2244SC (Note 1)
M20B
20-Lead (0 300 Wide) Molded Small Outline JEDEC
74F2244MSA (Note 1)
MSA20
20-Lead Molded Shrink Small Outline EIAJ Type II
54F2244FM (Note 2)
W20A
20-Lead Cerpak
54F2244LM (Note 2)
E20A
20-Lead Ceramic Leadless Chip Carier Type C
Note 1
Devices also available in 13
reel Use suffix
e
SCX and MSAX
Note 2
Military grade device with environmental and burn-in processing Use suffix
e
DMQB FMQB and LMQB
Connection Diagrams
Pin Assignment for LCC
'F2244
TL F 9499 3
Pin Assignment for DIP SOIC and SSOP
'F2244
TL F 9499 4
TRI-STATE
is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation
RRD-B30M105 Printed in U S A
Logic Symbol
IEEE IEC
'F2244
TL F 9499 6
Unit Loading Fan Out
54F 74F
Pin Names
Description
U L
Input I
IH
I
IL
HIGH LOW
Output I
OH
I
OL
OE
1
OE
2
TRI-STATE Output Enable Input (Active LOW)
1 0 1 667
20 mA
b
1 mA
OE
2
TRI-STATE Output Enable Input (Active HIGH)
1 0 1 667
20 mA
b
1 mA
I
an
I
bn
Inputs
1 0 2 667
20 mA
b
1 6 mA
O
an
O
bn
Outputs
750 20
b
15 mA 12 mA
Worst-case 'F2244 disabled
Truth Table
'F2244
OE
1
I
an
O
an
OE
2
I
bn
O
bn
H
X
Z
H
X
Z
L
H
H
L
H
H
L
L
L
L
L
L
H
e
HIGH Voltage Level
L
e
LOW Voltage Level
X
e
Immaterial
Z
e
High Impedance
2
Absolute Maximum Ratings
(Note 1)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Storage Temperature
b
65 C to
a
150 C
Ambient Temperature under Bias
b
55 C to
a
125 C
Junction Temperature under Bias
b
55 C to
a
175 C
Plastic
b
55 C to
a
150 C
V
CC
Pin Potential to
Ground Pin
b
0 5V to
a
7 0V
Input Voltage (Note 2)
b
0 5V to
a
7 0V
Input Current (Note 2)
b
30 mA to
a
5 0 mA
Voltage Applied to Output
in HIGH State (with V
CC
e
0V)
Standard Output
b
0 5V to V
CC
TRI-STATE Output
b
0 5V to
a
5 5V
Current Applied to Output
in LOW State (Max)
twice the rated I
OL
(mA)
ESD Last Passing Voltage (Min)
4000V
Note 1
Absolute maximum ratings are values beyond which the device may
be damaged or have its useful life impaired Functional operation under
these conditions is not implied
Note 2
Either voltage limit or current limit is sufficient to protect inputs
Recommended Operating
Conditions
Free Air Ambient Temperature
Military
b
55 C to
a
125 C
Commercial
0 C to
a
70 C
Supply Voltage
Military
a
4 5V to
a
5 5V
Commercial
a
4 5V to
a
5 5V
DC Electrical Characteristics
Symbol
Parameter
54F 74F
Units
V
CC
Conditions
Min
Typ
Max
V
IH
Input HIGH Voltage
2 0
V
Recognized as a HIGH Signal
V
IL
Input LOW Voltage
0 8
V
Recognized as a LOW Signal
V
CD
Input Clamp Diode Voltage
b
1 2
V
Min
I
IN
e b
18 mA
V
OH
Output HIGH
54F 10% V
CC
2 4
I
OH
e b
3 mA
Voltage
54F 10% V
CC
2 0
I
OH
e b
12 mA
74F 10% V
CC
2 4
V
Min
I
OH
e b
3 mA
74F 10% V
CC
2 0
I
OH
e b
15 mA
74F 5% V
CC
2 7
I
OH
e b
3 mA
V
OL
Output LOW
0 50
V
Min
I
OL
e
1 mA
Voltage
0 75
I
OL
e
12 mA
I
IH
Input HIGH
54F
20 0
m
A
Max
V
IN
e
2 7V
Current
74F
5 0
I
BVI
Input HIGH Current
54F
100
m
A
Max
V
IN
e
7 0V
Breakdown Test
74F
7 0
I
CEX
Output HIGH
54F
250
m
A
Max
V
OUT
e
V
CC
Leakage Current
74F
50
V
ID
Input Leakage
74F
4 75
V
0 0
I
ID
e
1 9 mA
Test
All other pins grounded
I
OD
Output Leakage
74F
3 75
m
A
0 0
V
IOD
e
150 mV
Circuit Current
All other pins grounded
I
IL
Input LOW Current
b
1 0
mA
Max
V
IN
e
0 5V (OE
1
OE
2
OE
2
)
b
1 6
V
IN
e
0 5V (I
n
)
I
OZH
Output Leakage Current
50
m
A
Max
V
OUT
e
2 7V
I
OZL
Output Leakage Current
b
50
m
A
Max
V
OUT
e
0 5V
I
OS
Output Short-Circuit Current
b
100
b
225
mA
Max
V
OUT
e
0V
I
CCH
Power Supply Current
40
60
mA
Max
V
O
e
HIGH
I
CCL
Power Supply Current
60
90
mA
Max
V
O
e
LOW
I
CCZ
Power Supply Current
60
90
mA
Max
V
O
e
HIGH Z
3
AC Electrical Characteristics
74F
54F
74F
T
A
e a
25 C
T
A
V
CC
e
Mil
T
A
V
CC
e
Com
Symbol
Parameter
V
CC
e a
5 0V
C
L
e
50 pF
C
L
e
50 pF
Units
C
L
e
50 pF
Min
Typ
Max
Min
Max
Min
Max
t
PLH
Propagation Delay
1 5
7 0
2 0
6 5
1 5
7 0
ns
t
PHL
Data to Output
2 5
8 0
2 0
7 0
2 0
8 0
t
PZH
Output Enable Time
1 5
9 0
2 0
7 0
1 0
9 5
t
PZL
2 5
11 5
2 0
8 5
2 5
12 0
ns
t
PHZ
Output Disable Time
1 5
9 0
2 0
7 0
1 0
9 5
t
PLZ
1 5
8 5
2 0
7 5
1 5
9 5
Ordering Information
The device number is used to form part of a simplified purchasing code where a package type and temperature range are
defined as follows
74F
2244
S
C
X
Temperature Range Family
Special Variations
74F
e
Commercial
QB
e
Military grade device with
54F
e
Military
environmental and burn-in
processing
Device Type
X
e
Devices shipped in 13 reel
Package Code
Temperature Range
P
e
Plastic DIP
C
e
Commercial (0 C to
a
70 C)
D
e
Ceramic DIP
M
e
Military (
b
55 C to
a
125 C)
S
e
Small Outline Package (SOIC)
MSA
e
Shrink Small Outline Package SOIC EIAJ
Type II (74F244 only)
L
e
Leadless Chip Carrier (LCC)
F
e
Flatpak
4
5
Physical Dimensions
inches (millimeters)
20-Lead Ceramic Leadless Chip Carrier Type C (L)
NS Package Number E20A
20-Lead Ceramic Dual-In-Line Package (D)
NS Package Number J20A
6
Physical Dimensions
inches (millimeters) (Continued)
20-Lead Molded Shrink Small Outline Package EIAJ Type II (MSA)
NS Package Number MSA20
20-Lead (0 300 Wide) Molded Dual-In-Line Package (P)
NS Package Number N20B
7
54F74F2244
Octal
BufferLine
Driver
with
25
X
Series
Resistors
in
Outputs
Physical Dimensions
inches (millimeters) (Continued)
20-Lead Cerpak (F)
NS Package Number W20A
LIFE SUPPORT POLICY
NATIONAL'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL
SEMICONDUCTOR CORPORATION As used herein
1 Life support devices or systems are devices or
2 A critical component is any component of a life
systems which (a) are intended for surgical implant
support device or system whose failure to perform can
into the body or (b) support or sustain life and whose
be reasonably expected to cause the failure of the life
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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