54F 74F253 Dual 4-Input Multiplexer with TRI-STATE Outputs
November 1994
54F 74F253
Dual 4-Input Multiplexer with TRI-STATE Outputs
General Description
The ’F253 is a dual 4-input multiplexer with TRI-STATE
outputs It can select two bits of data from four sources
using common select inputs The output may be individually
switched to a high impedance state with a HIGH on the
respective Output Enable (OE) inputs allowing the outputs
to interface directly with bus oriented systems
Features
Y
Y
Y
Multifunction capability
Non-inverting TRI-STATE outputs
Guaranteed 4000V minimum ESD protection
Commercial
74F253PC
Military
Package
Number
N16E
Package Description
16-Lead (0 300 Wide) Molded Dual-In-Line
16-Lead Ceramic Dual-In-Line
16-Lead (0 150 Wide) Molded Small Outline JEDEC
16-Lead (0 300 Wide) Molded Small Outline EIAJ
16-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier Type C
54F253DM (Note 2)
74F253SC (Note 1)
74F253SJ (Note 1)
54F253FM (Note 2)
54F253LL (Note 2)
J16A
M16A
M16D
W16A
E20A
Note 1
Devices also available in 13 reel Use suffix
e
SCX and SJX
Note 2
Military grade device with environmental and burn-in processing Use suffix
e
DMQB FMQB and LMQB
Logic Symbols
Connection Diagrams
Pin Assignment for
DIP SOIC and Flatpak
Pin Assignment
for LCC
TL F 9505–3
IEEE IEC
TL F 9505 – 1
TL F 9505 – 2
TL F 9505–5
TRI-STATE is a registered trademark of National Semiconductor Corporation
C
1995 National Semiconductor Corporation
TL F 9505
RRD-B30M75 Printed in U S A
Unit Loading Fan Out
54F 74F
Pin Names
I
0a
–I
3a
I
0b
– I
3b
S
0
–S
1
OE
a
OE
b
Z
a
Z
b
Description
Side A Data Inputs
Side B Data Inputs
Common Select Inputs
Side A Output Enable Input (Active LOW)
Side B Output Enable Input (Active LOW)
TRI-STATE Outputs
UL
HIGH LOW
10 10
10 10
10 10
10 10
10 10
150 40(33 3)
Input I
IH
I
IL
Output I
OH
I
OL
20
mA
b
0 6 mA
20
mA
b
0 6 mA
20
mA
b
0 6 mA
20
mA
b
0 6 mA
20
mA
b
0 6 mA
b
3 mA 24 mA (20 mA)
Functional Description
This device contains two identical 4-input multiplexers with
TRI-STATE outputs They select two bits from four sources
selected by common Select inputs (S
0
S
1
) The 4-input mul-
tiplexers have individual Output Enable (OE
a
OE
b
) inputs
which when HIGH force the outputs to a high impedance
(High Z) state This device is the logic implementation of a
2-pole 4-position switch where the position of the switch is
determined by the logic levels supplied to the two select
inputs The logic equations for the outputs are shown below
Z
a
e
OE
a
(I
0a
S
1
S
0
a
I
1a
S
1
S
0
a
I
2a
S
1
S
0
a
I
3a
S
1
S
0
)
Z
b
e
OE
b
(I
0b
S
1
S
0
a
I
1b
S
1
S
0
a
I
2b
S
1
S
0
a
I
3b
S
1
S
0
)
If the outputs of TRI-STATE devices are tied together all
but one device must be in the high impedance state to avoid
high currents that would exceed the maximum ratings De-
signers should ensure that Output Enable signals to TRI-
STATE devices whose outputs are tied together are de-
signed so that there is no overlap
Truth Table
Select
Inputs
S
0
X
L
L
H
H
L
L
H
H
S
1
X
L
L
L
L
H
H
H
H
I
0
X
L
H
X
X
X
X
X
X
Data Inputs
I
1
X
X
X
L
H
X
X
X
X
I
2
X
X
X
X
X
L
H
X
X
I
3
X
X
X
X
X
X
X
L
H
Output
Enable
OE
H
L
L
L
L
L
L
L
L
Output
Z
Z
L
H
L
H
L
H
L
H
Address inputs S
0
and S
1
are common to both sections
H
e
HIGH Voltage Level
L
e
LOW Voltage Level
X
e
Immaterial
Z
e
High Impedance
Logic Diagram
TL F 9505 – 4
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays
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
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
b
65 C to
a
150
b
55 C to
a
125
b
55 C to
a
175
b
55 C to
a
150
Current Applied to Output
in LOW State (Max)
ESD Last Passing Voltage (Min)
twice the rated I
OL
(mA)
4000V
C
C
C
C
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
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
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
74F 5% V
CC
54F 10% V
CC
74F 10% V
CC
54F
74F
54F
74F
54F
74F
74F
74F
4 75
3 75
b
0 6
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
I
OH
e
e
e
e
e
e
b
1 mA
b
3 mA
b
1 mA
b
3 mA
b
1 mA
b
3 mA
25
24
25
24
27
27
05
05
20 0
50
100
70
250
50
V
Min
V
OL
I
IH
I
BVI
I
CEX
V
ID
I
OD
I
IL
I
OZH
I
OZL
I
OS
I
ZZ
I
CCH
I
CCL
I
CCZ
Output LOW
Voltage
Input HIGH
Current
Input HIGH Current
Breakdown Test
Output HIGH
Leakage Current
Input Leakage
Test
Output Leakage
Circuit Current
Input LOW Current
V
mA
mA
mA
V
mA
mA
mA
mA
mA
mA
mA
mA
mA
Min
Max
Max
Max
00
00
Max
Max
Max
Max
0 0V
Max
Max
Max
I
OL
e
20 mA
I
OL
e
24 mA
V
IN
e
2 7V
V
IN
e
7 0V
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
V
OUT
e
2 7V
V
OUT
e
0 5V
V
OUT
e
0V
V
OUT
e
0V
V
OUT
e
V
CC
V
O
e
HIGH
V
O
e
LOW
V
O
e
HIGH Z
Output Leakage Current
Output Leakage Current
Output Short-Circuit Current
Bus Drainage Test
Power Supply Current
Power Supply Current
Power Supply Current
11 5
16
16
b
60
b
100
50
b
50
b
150
b
225
500
16
23
23
3
AC Electrical Characteristics
74F
Symbol
Parameter
Min
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation Delay
S
n
to Z
n
Propagation Delay
I
n
to Z
n
Output Enable Time
Output Disable Time
45
30
30
25
30
30
20
20
T
A
e a
25 C
V
CC
e a
5 0V
C
L
e
50 pF
Typ
85
65
55
45
60
60
37
44
Max
11 5
90
70
60
80
80
50
60
54F
T
A
V
CC
e
Mil
C
L
e
50 pF
Min
35
25
25
25
25
25
20
20
Max
15 0
11 0
90
80
10 0
10 0
65
80
74F
T
A
V
CC
e
Com
C
L
e
50 pF
Min
45
30
30
25
30
30
20
20
Max
13 0
10 0
80
70
90
90
60
70
ns
ns
Units
ns
4
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
P
e
Plastic DIP
D
e
Ceramic DIP
F
e
Flatpak
L
e
Leadless Chip Carrier (LCC)
S
e
Small Outline SOIC JEDEC
SJ
e
Small Outline SOIC EIAJ
253
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
5
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