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74F352
Dual 4-Input Multiplexer
74F352 Dual 4-Input Multiplexer
May 1988
Revised August 1999
General Description
The 74F352 is a very h igh-speed dual 4-i nput multiplexer
with common Select inputs and individual Enable inputs for
each section. It can select two bits of data from four
sources. The two buffered outputs present data in the
inverted (compleme ntary) form. The 74F352 is the functional equivalent of the 74F153 exce pt with inverted outputs.
Features
■ Inverted version of 74F153
■ Separate enables for each multiple xer
■ Input clamp diode limits high speed termination effects
Ordering Code:
Order Number Package Number Package Description
74F352SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74F352PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also availab le in Tape and Reel. Specify by appending th e s uffix let t er “X” to the ordering cod e.
Logic Symbols
IEEE/IEC
Connection Diagram
Truth T able
Select
Inputs
S
0S1
XXHXXXX H
LLLLXXX H
LLLHXXX L
HLLXLXX H
Inputs (a or b) Output
E I0I1I2I3Z
HLLXHXX L
LHLXXLX H
LHLXXHX L
HHLXXXL H
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
© 1999 Fairchild Semiconductor Corporation DS009519 www.fairchildsemi.com
HHLXXXH L
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Unit Loading/Fan Out
74F352
Pin Names Description
I0a–I
I
0b–I3b
S
0–S1
E
a
E
b
, Z
Z
a
3a
Side A Data Inputs 1.0/1.0 20 µA/−0.6 mA
Side B Data Inputs 1.0/1.0 20 µA/−0.6 mA
Common Select Inputs 1.0/1.0 20 µA/−0.6 mA
Side A Enabl e Input (Active LOW) 1.0/1.0 20 µA/−0.6 mA
Side B Enabl e Input (Active LOW) 1.0/1.0 20 µA/−0.6 mA
Multiplexer Outputs (Inverted) 50/33.3 −1 mA/20 mA
b
Functional Description
The 74F352 is a dual 4-input multiplexer. It selects two bits
of data from up to f our sources under the control of the
common Select inputs (S
circuits have indivi du al a cti ve LOW E nab les ( E
can be used to strobe the outputs independently. When the
Enables (E
Z
b
, Eb) are HIGH, the cor resp on di ng ou tpu ts (Za,
a
) are forced HIGH. Th e logic equations for the outpu ts
are shown below:
= Ea • (I0a • S1 • S0 + I1a • S1• S0 +
Z
a
I
= Eb • (I0b • S1 • S0 + I1b • S1• S0 +
Z
b
I
, S1). The two 4-input multiplexer
0
• S1 • S0 + I3a • S1 • S0)
2a
• S1 • S0 + I3b • S1 • S0)
2b
, Eb) which
a
U.L.
HIGH/LOW
Input I
Output I
IH/IIL
OH/IOL
The 74F352 can be used to move data from a group of registers to a common output bu s. Th e pa rtic u lar r egister from
which the data came would be det ermined by the state of
the Select inputs. A less obvious app lication is as a function generator. The 74F352 can ge nerate two functions of
three variables. This is useful for implementing highly irregular random logic.
Logic Diagram
Please note that this diagram is provided o nly f or t he understanding of lo gic operations and shou ld not be used to estimate propagation delays.
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Absolute Maximum Ratings(Note 1) Recommended Operating
Storage Temperature −65°C to +150°C
Ambient Temperature under Bias −55°C to +125°C
Junction Temperature under Bias −55°C to +150°C
Pin Potential to Ground Pin −0.5V to +7.0V
V
CC
Input Voltage (Note 2) −0.5V to +7.0V
Input Current (Note 2) −30 mA to +5.0 mA
Voltage Applied to Output
in HIGH State (with V
CC
= 0V)
Standard Output −0.5V to V
3-STATE Output −0.5V to +5.5V
Current Applied to Output
in LOW State (Max) twice the rated I
OL
Conditions
Free Air Ambient Temperature 0°C to +70°C
Supply Voltage +4.5V to +5.5V
Note 1: Absolute maximum ratings are values beyon d which the device
may be damaged or have its useful life impaired . Functional operation
CC
under these condit ions is not implied.
Note 2: Either voltage limit or curren t limit is sufficient to protect in puts.
(mA)
DC Electrical Characteristics
74F352
Symbol Parameter Min Typ Max Units
V
IH
V
IL
V
CD
V
OH
V
OL
Input HIGH Voltage 2.0 V Recognized as a HIGH Signal
Input LOW Voltage 0.8 V Recognized as a LOW Signal
Input Clamp Diode Voltage −1.2 V Min IIN = −18 mA
Output HIGH 10% V
Voltage 5% V
Output LOW 10% V
2.5
CC
2.7 IOH = −1 mA
CC
CC
0.5 V Min IOL = 20 mA
Voltage
I
IH
I
BVI
I
CEX
V
I
OD
I
IL
I
OS
I
CCH
I
CCL
ID
Input HIGH
Current
Input HIGH Current
Breakdown Test
Output HIGH
Leakage Current
Input Leakage
Test All Other Pins Grounded
4.75 V 0.0
Output Leakage
Circuit Current All Other Pins Grounded
5.0 µAMaxVIN = 2.7V
7.0 µAMaxVIN = 7.0V
50 µAMaxV
3.75 µA0.0
Input LOW Current −0.6 mA Max VIN = 0.5V
Output Short-Circuit Current −60 −150 mA Max V
Power Supply Current 9.3 14 mA Max VO = HIGH
Power Supply Current 13.3 20 mA Max VO = LOW
AC Electrical Characteristics
TA = +25°CT
Symbol Parameter
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
Propagation Delay 4.0 8.0 11.0 3.5 12.5
Sn to Z
n
Propagation Delay 3.0 4.5 6.0 2.5 7.0
En to Z
n
Propagation Delay 2.0 5.2 7.0 2.0 8.0
In to Z
n
VCC = +5.0V VCC = +5.0V
CL = 50 pF CL = 50 pF
Min T yp Max Min Max
3.56.58.53.09.5
3.05.07.02.58.0
1.32.54.01.04.5
V
CC
VMin
IOH = −1 mA
IID = 1.9 µA
V
= 0°C to +70°C
A
= V
OUT
= 150 mV
IOD
= 0V
OUT
Conditions
CC
Units
ns
ns
ns
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Physical Dimensions inches (millimeters) unless otherwise noted
74F352
16-Lead Small Outline Package ( SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M16D
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
74F352 Dual 4-Input Multiplexer
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent license s are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or syste ms
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provide d in the labe l ing, can be re asonably expected to result in a significant injury to the
user.
Package Number N16E
2. A critical component in any componen t of a life s uppor t
device or system whose failu re to perform can b e reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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