Fairchild Semiconductor 54F243DMQB

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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

TL/F/9502
54F/74F243 Quad Bus Transceiver with TRI-STATE Outputs
November 1994
54F/74F243
Quad Bus Transceiver with TRI-STATE
É
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
2-Way asynchronous data bus communication
Y
Input clamp diodes limit high-speed termination effects
Y
Guaranteed 4000V minimum ESD protection
Commercial Military
Package
Package Description
Number
54F243DM (Note 2) J14A 14-Lead Ceramic Dual-In-Line
74F243SC (Note 1) M14A 14-Lead (0.150
×
Wide) Molded Small Outline, JEDEC
54F243FM (Note 2) W14B 14-Lead Cerpack
54F243LM (Note 2) E20A 20-Lead Ceramic Leadless Chip Carrier, Type C
Note 1: Devices also available in 13
×
reel. Use Suffix
e
SCX.
Note 2: Military grade device with environmental and burn-in processing. Use suffix
e
DMQB, FMQB and LMQB.
Logic Symbol
IEEE/IEC
TL/F/95023
Connection Diagrams
Pin Assignment
for DIP, SOIC and Flatpak
TL/F/95021
Pin Assignment
for LCC
TL/F/95022
TRI-STATE
É
is a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.
Unit Loading/Fan Out
54F/74F
Pin Names Description
U.L. Input I
IH
/I
IL
HIGH/LOW Output I
OH
/I
OL
E
1
Enable Input (Active LOW) 1.0/1.67 20 mA/
b
1mA
E
2
Enable Input (Active HIGH) 1.0/1.67 20 mA/
b
1mA
A
n
,B
n
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 Inputs/Outputs
E
1
E
2
A
n
B
n
H
e
HIGH Voltage Level
L
e
LOW Voltage Level
L L Input B
e
A
Z
e
High Impedance
N/A
e
Not Allowed
L H N/A N/A
HL Z Z
HHA
e
B Input
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
§
Cto
a
150
§
C
Ambient Temperature under Bias
b
55
§
Cto
a
125
§
C
Junction Temperature under Bias
b
55
§
Cto
a
175
§
C
Plastic
b
55
§
Cto
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
§
Cto
a
125
§
C
Commercial 0
§
Cto
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
eb
18 mA
V
OH
Output HIGH 54F 10% V
CC
2.4 I
OH
eb
3mA(A
n
,B
n
)
Voltage 54F 10% V
CC
2.0 I
OH
eb
12 mA (A
n
,B
n
)
74F 10% V
CC
2.4 V Min I
OH
eb
3mA(A
n
,B
n
)
74F 10% V
CC
2.0 I
OH
eb
15 mA (A
n
,B
n
)
74F 5% V
CC
2.7 I
OH
eb
3mA(A
n
,B
n
)
V
OL
Output LOW 54F 10% V
CC
0.55
V Min
I
OL
e
48 mA (A
n
,B
n
)
Voltage 74F 10% V
CC
0.55 I
OL
e
64 mA (A
n
,B
n
)
I
IH
Input HIGH 54F 20.0
mA Max
V
IN
e
2.7V
Current 74F 5.0
I
BVI
Input HIGH Current 54F 100
mA Max
V
IN
e
7.0V (E
1
,E
2
)
Breakdown Test 74F 7.0
I
BVIT
Input HIGH Current 54F 1.0
mA Max
V
IN
e
5.5V (A
n
,B
n
)
Breakdown (I/O) 74F 0.5
I
CEX
Output HIGH 54F 250
mA 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 mA 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 (E
1
,E
2
)
I
IH
a
I
OZH
Output Leakage Current 70 mA Max V
OUT
e
2.7V (A
n
,B
n
)
I
IL
a
I
OZL
Output Leakage Current
b
1.6 mA Max V
OUT
e
0.5V (A
n
,B
n
)
I
OS
Output Short-Circuit Current
b
100
b
225 mA Max V
OUT
e
0V (A
n
,B
n
)
I
CCH
Power Supply Current 64 80 mA Max V
O
e
HIGH
I
CCL
Power Supply Current 64 90 mA Max V
O
e
LOW
I
CCZ
Power Supply Current 71 90 mA Max V
O
e
HIGH Z
3
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