54F 74F243 Quad Bus Transceiver with TRI-STATE Outputs
November 1994
54F 74F243
Quad Bus Transceiver with TRI-STATE Outputs
General Description
The ’F243 is a quad bus transmitter receiver designed for
4-line asynchronous 2-way data communications between
data busses
Features
Y
Y
Y
2-Way asynchronous data bus communication
Input clamp diodes limit high-speed termination effects
Guaranteed 4000V minimum ESD protection
Commercial
Military
54F243DM (Note 2)
Package
Number
J14A
M14A
Package Description
14-Lead Ceramic Dual-In-Line
14-Lead (0 150 Wide) Molded Small Outline JEDEC
14-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier Type C
74F243SC (Note 1)
54F243FM (Note 2)
54F243LM (Note 2)
Note 1
Devices also available in 13 reel Use Suffix
e
SCX
W14B
E20A
Note 2
Military grade device with environmental and burn-in processing Use suffix
e
DMQB FMQB and LMQB
Logic Symbol
IEEE IEC
Connection Diagrams
Pin Assignment
for DIP SOIC and Flatpak
Pin Assignment
for LCC
TL F 9502 – 1
TL F 9502 – 2
TL F 9502–3
TRI-STATE is a registered trademark of National Semiconductor Corporation
C
1995 National Semiconductor Corporation
TL F 9502
RRD-B30M105 Printed in U S A
Unit Loading Fan Out
54F 74F
Pin Names
Description
UL
HIGH LOW
Input I
IH
I
IL
Output I
OH
I
OL
E
1
E
2
A
n
B
n
Enable Input (Active LOW)
1 0 1 67
20
mA
b
1 mA
Enable Input (Active HIGH)
1 0 1 67
20
mA
b
1 mA
Inputs
3 5 2 67
70
mA
b
1 6 mA
Outputs
600 106 6(80)
b
12 mA 64 mA(48 mA)
Truth Table
Inputs
E
1
L
L
H
H
E
2
L
H
L
H
Inputs Outputs
A
n
Input
N A
Z
A
e
B
B
n
B
e
A
N A
Z
Input
H
e
HIGH Voltage Level
L
e
LOW Voltage Level
Z
e
High Impedance
N A
e
Not Allowed
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
b
65 C to
a
150 C
Storage Temperature
Ambient Temperature under Bias
Junction Temperature under Bias
Plastic
V
CC
Pin Potential to
Ground Pin
Input Voltage (Note 2)
Input Current (Note 2)
Voltage Applied to Output
in HIGH State (with V
CC
e
0V)
Standard Output
TRI-STATE Output
Current Applied to Output
in LOW State (Max)
ESD Last Passing Voltage (Min)
b
55 C to
a
125 C
b
55 C to
a
175 C
b
55 C to
a
150 C
b
0 5V to
a
7 0V
b
0 5V to
a
7 0V
b
30 mA to
a
5 0 mA
Recommended Operating
Conditions
Free Air Ambient Temperature
Military
Commercial
Supply Voltage
Military
Commercial
b
55 C to
a
125 C
0 C to
a
70 C
a
4 5V to
a
5 5V
a
4 5V to
a
5 5V
b
0 5V to V
CC
b
0 5V to
a
5 5V
twice the rated I
OL
(mA)
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
Symbol
V
IH
V
IL
V
CD
V
OH
Parameter
Min
Input HIGH Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH
Voltage
54F 10% V
CC
54F 10% V
CC
74F 10% V
CC
74F 10% V
CC
74F 5% V
CC
54F 10% V
CC
74F 10% V
CC
54F
74F
54F
74F
54F
74F
54F
74F
74F
74F
4 75
3 75
b
1 0
54F 74F
Typ
Max
Units
V
08
b
1 2
V
CC
Conditions
Recognized as a HIGH Signal
Recognized as a LOW Signal
20
V
V
Min
I
IN
e b
18 mA
I
OH
I
OH
I
OH
I
OH
I
OH
e
e
e
e
e
b
3 mA (A
n
B
n
)
b
12 mA (A
n
B
n
)
b
3 mA (A
n
B
n
)
b
15 mA (A
n
B
n
)
b
3 mA (A
n
B
n
)
24
20
24
20
27
0 55
0 55
20 0
50
100
70
10
05
250
50
V
Min
V
OL
I
IH
I
BVI
I
BVIT
I
CEX
V
ID
I
OD
I
IL
I
IH
a
I
OZH
I
IL
a
I
OZL
I
OS
I
CCH
I
CCL
I
CCZ
Output LOW
Voltage
Input HIGH
Current
Input HIGH Current
Breakdown Test
Input HIGH Current
Breakdown (I O)
Output HIGH
Leakage Current
Input Leakage
Test
Output Leakage
Circuit Current
Input LOW Current
V
mA
mA
mA
mA
V
mA
mA
mA
mA
mA
mA
mA
mA
Min
Max
Max
Max
Max
00
00
Max
Max
Max
Max
Max
Max
Max
I
OL
e
48 mA (A
n
B
n
)
I
OL
e
64 mA (A
n
B
n
)
V
IN
e
2 7V
V
IN
e
7 0V (E
1
E
2
)
V
IN
e
5 5V (A
n
B
n
)
V
OUT
e
V
CC
I
ID
e
1 9
mA
All Other Pins Grounded
V
IOD
e
150 mV
All Other Pins Grounded
V
IN
e
0 5V (E
1
E
2
)
V
OUT
e
2 7V (A
n
B
n
)
V
OUT
e
0 5V (A
n
B
n
)
V
OUT
e
0V (A
n
B
n
)
V
O
e
HIGH
V
O
e
LOW
V
O
e
HIGH Z
Output Leakage Current
Output Leakage Current
Output Short-Circuit Current
Power Supply Current
Power Supply Current
Power Supply Current
3
b
100
70
b
1 6
b
225
64
64
71
80
90
90
AC Electrical Characteristics
74F
Symbol
Parameter
Min
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation Delay
A
n
to B
n
B
n
to A
n
Output Enable Time
E
1
to B
n
E
2
to A
n
Output Disable Time
E
1
to B
n
E
2
to A
n
25
25
20
20
20
20
T
A
e a
25 C
V
CC
e a
5 0V
C
L
e
50 pF
Typ
40
40
43
58
45
45
Max
52
52
57
75
60
60
54F
T
A
V
CC
e
Mil
C
L
e
50 pF
Min
20
20
20
20
15
20
Max
65
85
80
10 5
75
85
74F
T
A
V
CC
e
Com
C
L
e
50 pF
Min
20
20
20
20
15
20
Max
62
65
67
85
70
70
ns
Units
ns
Ordering Information
The device number is used to form part of a simplified purchasing code where the package type and temperature range are
defined as follows
74F
Temperature Range Family
74F
e
Commercial
54F
e
Military
Device Type
Package Code
D
e
Ceramic DIP
F
e
Flatpak
L
e
Leadless Chip Carrier (LCC)
S
e
Small Outline SOIC JEDEC
243
S
C
X
Special Variations
QB
e
Military grade device with
environmental and burn-in
processing
X
e
Devices shipped in 13 reel
Temperature Range
C
e
Commercial (0 C to
a
70 C)
M
e
Military (
b
55 C to
a
125 C)
Physical Dimensions
inches (millimeters)
20-Lead Ceramic Leadless Chip Carrier (L)
NS Package Number E20A
4
Physical Dimensions
inches (millimeters) (Continued)
14-Lead Ceramic Dual-In-Line Package (D)
NS Package Number J14A
14-Lead (0 150 Wide) Molded Small Outline Package JEDEC (S)
NS Package Number M14A
5
ADI · 世健工业技术
