54F243 Datasheet PDF - National Semiconductor

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54F243
National Semiconductor

Part Number 54F243
Description Quad Bus Transceiver with TRI-STATE Outputs
Page 6 Pages


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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 2-Way asynchronous data bus communication
Y Input clamp diodes limit high-speed termination effects
Y Guaranteed 4000V minimum ESD protection
Commercial
74F243SC (Note 1)
Military
54F243DM (Note 2)
54F243FM (Note 2)
54F243LM (Note 2)
Package
Number
J14A
M14A
W14B
E20A
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
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
Connection Diagrams
IEEE IEC
Pin Assignment
for DIP SOIC and Flatpak
Pin Assignment
for LCC
TL F 9502–3
TL F 9502 – 1
TL F 9502 – 2
TRI-STATE is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL F 9502
RRD-B30M105 Printed in U S A



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Unit Loading Fan Out
54F 74F
Pin Names
Description
UL
HIGH LOW
Input IIH IIL
Output IOH IOL
E1
E2
An Bn
Enable Input (Active LOW) 1 0 1 67
20 mA b1 mA
Enable Input (Active HIGH) 1 0 1 67
20 mA b1 mA
Inputs
3 5 2 67
70 mA b1 6 mA
Outputs
600 106 6(80) b12 mA 64 mA(48 mA)
Truth Table
Inputs
E1 E2
LL
LH
HL
HH
Inputs Outputs
An
Input
NA
Z
AeB
Bn
BeA
NA
Z
Input
H e HIGH Voltage Level
L e LOW Voltage Level
Z e High Impedance
N A e Not Allowed
2



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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
b65 C to a150 C
Ambient Temperature under Bias
b55 C to a125 C
Junction Temperature under Bias
Plastic
b55 C to a175 C
b55 C to a150 C
VCC Pin Potential to
Ground Pin
b0 5V to a7 0V
Input Voltage (Note 2)
b0 5V to a7 0V
Input Current (Note 2)
b30 mA to a5 0 mA
Voltage Applied to Output
in HIGH State (with VCC e 0V)
Standard Output
TRI-STATE Output
b0 5V to VCC
b0 5V to a5 5V
Current Applied to Output
in LOW State (Max)
ESD Last Passing Voltage (Min)
twice the rated IOL (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
Recommended Operating
Conditions
Free Air Ambient Temperature
Military
Commercial
b55 C to a125 C
0 C to a70 C
Supply Voltage
Military
Commercial
a4 5V to a5 5V
a4 5V to a5 5V
DC Electrical Characteristics
Symbol
Parameter
54F 74F
Min Typ Max
Units VCC
Conditions
VIH
VIL
VCD
VOH
VOL
IIH
Input HIGH Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH
Voltage
Output LOW
Voltage
Input HIGH
Current
54F 10% VCC
54F 10% VCC
74F 10% VCC
74F 10% VCC
74F 5% VCC
54F 10% VCC
74F 10% VCC
54F
74F
20
24
20
24
20
27
V Recognized as a HIGH Signal
08 V
Recognized as a LOW Signal
b1 2 V Min IIN e b18 mA
IOH e b3 mA (An Bn)
IOH e b12 mA (An Bn)
V Min IOH e b3 mA (An Bn)
IOH e b15 mA (An Bn)
IOH e b3 mA (An Bn)
0 55
0 55
V
Min
IOL e 48 mA (An Bn)
IOL e 64 mA (An Bn)
20 0
50
mA Max VIN e 2 7V
IBVI Input HIGH Current 54F
Breakdown Test
74F
100
70
mA Max VIN e 7 0V (E1 E2)
IBVIT
Input HIGH Current 54F
Breakdown (I O)
74F
10
05
mA Max VIN e 5 5V (An Bn)
ICEX
Output HIGH
Leakage Current
54F
74F
250
50
mA Max VOUT e VCC
VID
Input Leakage
Test
74F
4 75
V
00
IID e 1 9 mA
All Other Pins Grounded
IOD
Output Leakage
Circuit Current
74F
3 75
mA
00
VIOD e 150 mV
All Other Pins Grounded
IIL
IIH a IOZH
IIL a IOZL
IOS
ICCH
ICCL
ICCZ
Input LOW Current
Output Leakage Current
Output Leakage Current
Output Short-Circuit Current
Power Supply Current
Power Supply Current
Power Supply Current
b1 0 mA Max VIN e 0 5V (E1 E2)
70 mA Max VOUT e 2 7V (An Bn)
b1 6 mA Max VOUT e 0 5V (An Bn)
b100
b225 mA Max VOUT e 0V (An Bn)
64 80 mA Max VO e HIGH
64 90 mA Max VO e LOW
71 90 mA Max VO e HIGH Z
3



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AC Electrical Characteristics
Symbol
Parameter
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay
An to Bn Bn to An
Output Enable Time
E1 to Bn E2 to An
Output Disable Time
E1 to Bn E2 to An
74F
TA e a25 C
VCC e a5 0V
CL e 50 pF
Min Typ Max
25 40 52
25 40 52
20 43 57
20 58 75
20 45 60
20 45 60
54F
TA VCC e Mil
CL e 50 pF
Min Max
20 65
20 85
20 80
2 0 10 5
15 75
20 85
74F
TA VCC e Com
CL e 50 pF
Min Max
20 62
20 65
20 67
20 85
15 70
20 70
Units
ns
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 243 S C X
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
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 a70 C)
M e Military (b55 C to a125 C)
Physical Dimensions inches (millimeters)
20-Lead Ceramic Leadless Chip Carrier (L)
NS Package Number E20A
4



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