54F2244 [NSC]
Octal Buffer/Line Driver with 25X Series Resistors in Outputs; 用25X系列电阻在输出的八路缓冲器/线路驱动器型号: | 54F2244 |
厂家: | National Semiconductor |
描述: | Octal Buffer/Line Driver with 25X Series Resistors in Outputs |
文件: | 总8页 (文件大小:150K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
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.
Features
Y
TRI-STATE outputs drive bus lines or buffer memory
É
address registers
Y
Y
12 mA source current
25X series resistors in outputs eliminate the need for
external resistors.
The 25X series resistors in the outputs reduce ringing and
eliminate the need for external resistors.
Y
Y
Designed to drive the capacitive inputs of MOS devices
Guaranteed 4000V minimum ESD protection
Package
Commercial
74F2244PC
Military
Package Description
Number
N20B
20-Lead (0.300 Wide) Molded Dual-In-Line
×
54F2244DM (Note 2)
J20A
20-Lead Ceramic Dual-In-Line
74F2244SC (Note 1)
74F2244MSA (Note 1)
M20B
MSA20
W20A
E20A
20-Lead (0.300 Wide) Molded Small Outline JEDEC
×
20-Lead Molded Shrink Small Outline EIAJ Type II
20-Lead Cerpak
54F2244FM (Note 2)
54F2244LM (Note 2)
20-Lead Ceramic Leadless Chip Carier, Type C
e
Note 1: Devices also available in 13 reel. Use suffix
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
Pin Assignment for DIP, SOIC and SSOP
’F2244
TL/F/9499–3
TL/F/9499–4
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation
TL/F/9499
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 /I
IH IL
Output I /I
HIGH/LOW
OH OL
b
20 mA/ 1 mA
b
20 mA/ 1 mA
b
20 mA/ 1.6 mA
b
15 mA/12 mA
OE , OE
1
TRI-STATE Output Enable Input (Active LOW)
1.0/1.667
1.0/1.667
1.0/2.667*
750/20
2
OE
TRI-STATE Output Enable Input (Active HIGH)
2
I
, I
an bn
Inputs
O
,O
an bn
Outputs
*Worst-case ’F2244 disabled
Truth Table
’F2244
OE
1
I
O
OE
2
I
O
bn
an
an
bn
H
L
L
X
H
L
Z
H
L
L
X
H
L
Z
H
L
H
L
e
e
e
e
H
L
HIGH Voltage Level
LOW Voltage Level
Immaterial
X
Z
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.
Recommended Operating
Conditions
Free Air Ambient Temperature
Military
Commercial
b
a
55 C to 125 C
§
0 C to 70 C
§
§
b
b
a
65 C to 150 C
Storage Temperature
§
§
§
§
§
a
§
a
55 C to 125 C
Ambient Temperature under Bias
§
Supply Voltage
Military
Commercial
b
b
a
a a
4.5V to 5.5V
a a
4.5V to 5.5V
Junction Temperature under Bias
Plastic
55 C to 175 C
§
§
a
55 C to 150 C
V
Pin Potential to
CC
Ground Pin
b
a
0.5V to 7.0V
b
a
0.5V to 7.0V
Input Voltage (Note 2)
Input Current (Note 2)
Voltage Applied to Output
b
a
30 mA to 5.0 mA
e
in HIGH State (with V
Standard Output
TRI-STATE Output
0V)
CC
b
0.5V to 5.5V
0.5V to V
CC
b
a
Current Applied to Output
in LOW State (Max)
twice the rated I (mA)
OL
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.
DC Electrical Characteristics
54F/74F
Symbol
Parameter
Units
V
CC
Conditions
Min
Typ
Max
V
V
V
V
Input HIGH Voltage
2.0
V
V
V
Recognized as a HIGH Signal
Recognized as a LOW Signal
IH
Input LOW Voltage
0.8
IL
b
e b
18 mA
Input Clamp Diode Voltage
1.2
Min
Min
I
IN
CD
OH
e b
e b
e b
e b
e b
Output HIGH
Voltage
54F 10% V
2.4
2.0
2.4
2.0
2.7
I
I
I
I
I
3 mA
12 mA
3 mA
15 mA
3 mA
CC
CC
CC
CC
CC
OH
OH
OH
OH
OH
54F 10% V
74F 10% V
74F 10% V
V
74F 5% V
e
e
V
Output LOW
Voltage
0.50
0.75
I
I
1 mA
OL
OL
V
Min
Max
Max
Max
0.0
12 mA
OL
I
I
I
Input HIGH
Current
54F
74F
20.0
5.0
IH
e
e
mA
mA
mA
V
V
V
V
2.7V
IN
IN
Input HIGH Current
Breakdown Test
54F
74F
100
7.0
BVI
7.0V
Output HIGH
54F
74F
250
50
CEX
e
V
CC
OUT
Leakage Current
e
All other pins grounded
V
Input Leakage
Test
I
ID
1.9 mA
ID
OD
IL
74F
74F
4.75
e
All other pins grounded
I
I
Output Leakage
Circuit Current
V
150 mV
IOD
3.75
mA
mA
0.0
b
b
e
e
Input LOW Current
1.0
1.6
V
V
0.5V (OE , OE , OE )
1 2 2
0.5V (I )
IN
Max
IN
n
e
I
I
I
I
I
I
Output Leakage Current
Output Leakage Current
Output Short-Circuit Current
Power Supply Current
Power Supply Current
Power Supply Current
50
mA
mA
mA
mA
mA
mA
Max
Max
Max
Max
Max
Max
V
V
V
V
V
V
2.7V
0.5V
0V
OZH
OZL
OS
OUT
OUT
OUT
b
e
e
50
b
b
225
100
e
40
60
60
60
90
90
HIGH
LOW
CCH
CCL
CCZ
O
e
O
e
HIGH Z
O
3
AC Electrical Characteristics
74F
54F
74F
e a
T
25 C
§
5.0V
A
e
50 pF
e
T
, V
CC
e
Mil
T
, V
Com
e
50 pF
A
A CC
e a
Symbol
Parameter
V
Units
CC
C
C
L
L
e
C
50 pF
L
Min
Typ
Max
Min
Max
Min
Max
t
t
Propagation Delay
Data to Output
1.5
2.5
7.0
8.0
2.0
2.0
6.5
7.0
1.5
2.0
7.0
8.0
PLH
ns
ns
PHL
t
t
Output Enable Time
1.5
2.5
9.0
2.0
2.0
7.0
8.5
1.0
2.5
9.5
PZH
11.5
12.0
PZL
t
t
Output Disable Time
1.5
1.5
9.0
8.5
2.0
2.0
7.0
7.5
1.0
1.5
9.5
9.5
PHZ
PLZ
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
e
e
e
74F
54F
Commercial
Military
QB
Military grade device with
environmental and burn-in
processing
Device Type
e
X
Devices shipped in 13 reel
×
Package Code
Temperature Range
e
e
e
e
P
D
S
MSA
Plastic DIP
Ceramic DIP
Small Outline Package (SOIC)
Shrink Small Outline Package SOIC EIAJ
Type II (74F244 only)
e
e
a
C
M
Commercial (0 C to 70 C)
§
§
b a
Military ( 55 C to 125 C)
§
§
e
e
L
F
Leadless Chip Carrier (LCC)
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
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
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and whose
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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Corporation
National Semiconductor
Europe
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Hong Kong Ltd.
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Japan Ltd.
a
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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
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