74F253SJ PDF даташит
Спецификация 74F253SJ изготовлена «National» и имеет функцию, называемую «Dual 4-Input Multiplexer with TRI-STATE Outputs». |
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Детали детали
Номер произв | 74F253SJ |
Описание | Dual 4-Input Multiplexer with TRI-STATE Outputs |
Производители | National |
логотип |
8 Pages
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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 Multifunction capability
Y Non-inverting TRI-STATE outputs
Y Guaranteed 4000V minimum ESD protection
Commercial
74F253PC
74F253SC (Note 1)
74F253SJ (Note 1)
Military
54F253DM (Note 2)
54F253FM (Note 2)
54F253LL (Note 2)
Package
Number
N16E
J16A
M16A
M16D
W16A
E20A
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
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
IEEE IEC
TL F 9505–3
TL F 9505 – 1
TL F 9505 – 2
TL F 9505–5
TRI-STATE is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL F 9505
RRD-B30M75 Printed in U S A
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Unit Loading Fan Out
Pin Names
I0a – I3a
I0b – I3b
S0 – S1
OEa
OEb
Za Zb
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
54F 74F
UL
HIGH LOW
10 10
10 10
10 10
10 10
10 10
150 40(33 3)
Input IIH IIL
Output IOH IOL
20 mA b0 6 mA
20 mA b0 6 mA
20 mA b0 6 mA
20 mA b0 6 mA
20 mA b0 6 mA
b3 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 (S0 S1) The 4-input mul-
tiplexers have individual Output Enable (OEa OEb) 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
Za e OEa (I0a S1 S0 a I1a S1 S0 a
I2a S1 S0 a I3a S1 S0)
Zb e OEb (I0b S1 S0 a I1b S1 S0 a
I2b S1 S0 a I3b S1 S0)
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
Logic Diagram
Truth Table
Select
Inputs
S0 S1
XX
LL
LL
HL
Data Inputs
I0 I1 I2 I3
XXXX
LXXX
HXXX
XLXX
Output
Enable
OE
H
L
L
L
Output
Z
Z
L
H
L
H L XHXX
L H XXLX
L H XXHX
H H XXXL
H H XXXH
L
L
L
L
L
Address inputs S0 and S1 are common to both sections
H e HIGH Voltage Level
L e LOW Voltage Level
X e Immaterial
Z e High Impedance
H
L
H
L
H
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
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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)
twice the rated IOL (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
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
VIH
VIL
VCD
VOH
VOL
IIH
IBVI
ICEX
VID
IOD
IIL
IOZH
IOZL
IOS
IZZ
ICCH
ICCL
ICCZ
Parameter
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
74F 5% VCC
54F 10% VCC
74F 10% VCC
54F
74F
Input HIGH Current 54F
Breakdown Test
74F
Output HIGH
Leakage Current
54F
74F
Input Leakage
Test
74F
Output Leakage
Circuit Current
74F
Input LOW Current
Output Leakage Current
Output Leakage Current
Output Short-Circuit Current
Bus Drainage Test
Power Supply Current
Power Supply Current
Power Supply Current
54F 74F
Min Typ Max
20
08
b1 2
25
24
25
24
27
27
05
05
20 0
50
100
70
250
50
4 75
3 75
b60
b100
11 5
16
16
b0 6
50
b50
b150
b225
500
16
23
23
Units
V
V
V
V
V
mA
mA
mA
V
mA
mA
mA
mA
mA
mA
mA
mA
mA
VCC
Min
Min
Min
Max
Max
Max
00
00
Max
Max
Max
Max
0 0V
Max
Max
Max
Conditions
Recognized as a HIGH Signal
Recognized as a LOW Signal
IIN e b18 mA
IOH e b1 mA
IOH e b3 mA
IOH e b1 mA
IOH e b3 mA
IOH e b1 mA
IOH e b3 mA
IOL e 20 mA
IOL e 24 mA
VIN e 2 7V
VIN e 7 0V
VOUT e VCC
IID e 1 9 mA
All Other Pins Grounded
VIOD e 150 mV
All Other Pins Grounded
VIN e 0 5V
VOUT e 2 7V
VOUT e 0 5V
VOUT e 0V
VOUT e 0V
VOUT e VCC
VO e HIGH
VO e LOW
VO e HIGH Z
3
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74F253SJ | Dual 4-Input Multiplexer with TRI-STATE Outputs | National |
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