Datasheet MC74F352D, MC54F352J, MC74F352N Datasheet (Motorola)

4-157

FAST AND LS TTL DATA

DUAL 4-INPUT MULTIPLEXER

The MC54/74F352 is a very high speed dual 4-input 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 (complementary) form. The F352 is the functional equivalent of
the F153 except with inverted outputs.

• Inverted Version of the F153

• Separate Enables for Each Multiplexer

• Input Clamp Diode Limits High-Speed Termination Effects

CONNECTION DIAGRAM (TOP VIEW)

1516 14 13 12 11 10

21 3 4 5 6 7

V

CC

9

8

E

bS0I3bI2bI1bI0bZb

E

aS1I3aI2aI1aI0aZa

GND

LOGIC DIAGRAM

Ea

I

0aI1aI2aI3aS1S0I0bI1bI2bI3b

E

b

Z

a

Z

b

MC54/74F352

DUAL 4-INPUT
MULTIPLEXER

FAST SCHOTTKY TTL

J SUFFIX

CERAMIC

CASE 620-09

N SUFFIX

PLASTIC

CASE 648-08

16

1

16

1

ORDERING INFORMATION

MC54FXXXJ Ceramic
MC74FXXXN Plastic
MC74FXXXD SOIC

16

1

D SUFFIX

SOIC

CASE 751B-03

LOGIC SYMBOL

2 14

1
6

5
4

3
10
11

12
13

15

9

7

Z

a

Z

b

S

1

S

0

E

a

I

0a

I

1a

I

2a

I

3a

I

0b

I

1b

I

2b

I

3b

E

b

VCC = PIN 14
GND = PIN 7

4-158

FAST AND LS TTL DATA

MC54/74F352

GUARANTEED OPERATING RANGES

Symbol Parameter Min Typ Max Unit

V

CC

Supply Voltage 54, 74 4.5 5.0 5.5 V

T

A

Operating Ambient Temperature Range

54 - 55 25 125

A

74 0 25 70

°C

I

OH

Output Current — High 54, 74 –1.0 mA

I

OL

Output Current — Low 54, 74 20 mA

FUNCTIONAL DESCRIPTION

The F352 is a dual 4-input multiplexer. It selects two bits of

data from up to four sources under the control of the common
Select inputs (S0, S1).The two 4-input multiplexer circuits
have individual active-LOW Enables(E

a

, Eb) which can be
used to strobe the outputs independently . When the Enables
(E

a

, Eb) are HIGH, the corresponding outputs (Za, Zb) are

forced HIGH.

The logic equations for the outputs are shown below:

The F352 can be used to move data from a group of regis­ters to a common output bus. The particular register from
which the data came would be determined by the state of the
Select inputs. A less obvious application is as a function gen­erator. The F352 can generate two functions of three vari­ables. This is useful for implementing highly irregular random
logic.

Z

a

=Ea • (I0a • S1 • S0 + I1a • S1 • S0 + I2a • S1 • S0 + I3a • S1 • S0)

Z

b

=Eb • (I0b • S1 • S0 + I1b • S1 • S0 + I2b • S1 • S0 + I3b • S1 • S0)

FUNCTION TABLE

Select

Inputs

Inputs (a or b) Output

S0S

1

E I

0

I1I2I

3

Z

X X H X X X X H
L L L L X X X H
L L L H X X X L
H L L X L X X H
H L L X H X X L
L H L X X L X H
L H L X X H X L
H H L X X X L H
H H L X X X H L

H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care

4-159

FAST AND LS TTL DATA

MC54/74F352

DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)

Limits

Symbol Parameter Min Typ Max Unit Test Conditions

V

IH

Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage

V

IL

Input LOW Voltage 0.8 V Guaranteed Input LOW Voltage

V

IK

Input Clamp Diode Voltage –1.2 V IIN = –18 mA VCC = MIN

V

OH

Output HIGH Voltage 54, 74 2.5 3.4 V IOH = –1.0 mA VCC = 4.50 V
74 2.7 3.4 V IOH = –1.0 mA VCC = 4.75 V
V

OL

Output LOW Voltage 0.35 0.5 V IOL = 20 mA VCC = MIN
I

IH

Input HIGH Current 20

µA

VIN = 2.7 V VCC = MAX

100 VIN = 7.0 V

I

IL

Input LOW Current –0.6 mA VIN = 0.5 V VCC = MAX
I

OS

Output Short Circuit Current (Note 2) –60 –150 mA V

OUT

= 0 V VCC = MAX

I

CCH

Power Supply Current 9.3 14 mA VIN = GND VCC = MAX
I

CCL

13.3 20 VIN = HIGH

NOTES:

1. For conditions shown as MIN or MAX, use the appropriate value specified under guaranteed operating ranges.

2. Not more than one output should be shorted at a time, nor for more than 1 second.

AC CHARACTERISTICS

54/74F 54F 74F

TA = +25°C TA = 55°C to +125°C TA = 0°C to + 70°C

VCC = +5.0 V VCC = 5.0 V ± 10% VCC = 5.0 V ± 10%

CL = 50 pF CL = 50 pF CL = 50 pF

Symbol Parameter Min Typ Max Min Max Min Max Unit

t

PLH

Propagation Delay 3.5 7.4 11 3.0 14 3.0 12.5 ns
t

PHL

Sn to Z

n

3.0 7.0 8.5 2.5 11 2.5 9.5

t

PLH

Propagation Delay 2.5 5.0 7.0 2.0 10 2.0 8.0 ns
t

PHL

E

n

to Z

n

3.0 5.0 7.0 2.5 9.0 2.5 8.0

t

PLH

Propagation Delay 2.5 4.9 7.0 2.0 9.0 2.0 8.0 ns
t

PHL

In to Z

n

1.5 3.0 3.5 1.0 5.0 1.0 4.0