Datasheet MC74F382DW, MC74F382N, MC54F382J Datasheet (Motorola)

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Printed on:Mon, Feb 6, 1995 09:49:57
From book:DL121CH4 (5) VIEW
Document:MC74F382 (5) VIEW
Last saved on:Fri, Feb 3, 1995 16:07:09

4-184

FAST AND LS TTL DATA

4-BIT ARITHMETIC LOGIC UNIT

The MC54/74F382 performs three arithmetic and three logic operations on
two 4-bit words, A and B. Two additional Select input codes force the Function
outputs LOW or HIGH. An Overflow output is provided for convenience in twos
complement arithmetic. A Carry output is provided for ripple expansion. For
high-speed expansion using a Carry Lookahead Generator, refer to the F381
data sheet.

• Performs Six Arithmetic and Logic Functions

• Selectable Low (Clear) and High (Preset) Functions

• LOW Input Loading Minimizes Drive Requirements

• Carry Output for Ripple Expansion

• Overflow Output for Twos Complement Arithmetic

CONNECTION DIAGRAM

18 17 16 15 14 13

1 2 3 4 5 6

7

20 19

8

V

CC

A

1

A2B2A3B

3

C

n+4

C

n

OVR

B1A0B0S0S1S2F

0

9 10

F1GND

12 11

F3F

2

LOGIC SYMBOL

C

n

S

2

S

1

S

0

C

n+4

OVR

A

0

B3A3B2A

2

B0A1B

1

F

0

F

3

F

2

F

1

3 4 1 2 19 18 17 16

15

7
6
5

14
13

8 9 11 12

GUARANTEED OPERATING RANGES

Symbol Parameter Min Typ Max Unit

V

CC

Supply Voltage 54, 74 4.5 5.0 5.5 V

54 –55 25 125

TAOperating Ambient Temperature Range

74 0 25 70

°C

I

OH

Output Current — High 54, 74 –1.0 mA

I

OL

Output Current — Low 54, 74 20 mA

MC54/74F382

4-BIT ARITHMETIC LOGIC UNIT

FAST SCHOTTKY TTL

ORDERING INFORMATION

MC54FXXXJ Ceramic
MC74FXXXN Plastic
MC74FXXXDW SOIC

20

1

J SUFFIX

CERAMIC

CASE 732-03

20

1

N SUFFIX

PLASTIC

CASE 738-03

20

1

DW SUFFIX

SOIC

CASE 751D-03

4-185

FAST AND LS TTL DATA

MC54/74F382

LOGIC DIAGRAM

Please note that this diagram is provided
only for the understanding of logic
operations and should not be used to
estimate propagation delays.

C

n

B

0

A

0

B

1

A

1

B

2

A

2

B

3

A

3

S

0

S

1

S

2

F

0

F

1

F

2

F

3

P

G
OVR

Cn+4

F381
ONLY

F382
ONLY

4-186

FAST AND LS TTL DATA

MC54/74F382

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

54, 74 2.5 3.4 V IOH = –1.0 mA VCC = 4.5 V

VOHOutput HIGH Voltage

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

20 µA VIN = 2.7 V

IIHInput HIGH Current

100 µA VIN = 7.0 V

VCC = MAX

Input LOW Current
S0–S2 Inputs

–0.6 mA

I

IL

Other Inputs

–2.4 mA

VIN = 0.5 V

VCC = MAX

Cn Input

–3.0 mA

I

OS

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

OUT

= 0 V VCC = MAX

I

CC

Power Supply Current 54 81 mA

S0, Cn = HIGH;
Other Inputs GND

VCC = MAX

NOTES:

1. For conditions such 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.

FUNCTIONAL DESCRIPTION

Signals applied to the Select inputs S0–S2 determine the
mode of operation, as indicated in the Function Select Table.
An extensive listing of input and output levels is shown in the
Truth Table. The circuit performs the arithmetic functions for
either active HIGH or active LOW operands, with output levels
in the same convention. In the Subtract operating modes, it is
necessary to force a carry (HIGH for active HIGH operands,

LOW for active LOW operands) into the Cn input of the least
significant package. Ripple expansion is illustrated in Figure

1. The overflow output OVR is the Exclusive-OR of Cn + 3 and
C

n+4

; a HIGH signal on OVR indicates overflow in twos
complement operation. Typical delays for Figure 1 are given
in Figure 2.

FUNCTION SELECT TABLE

Select

S

0

S

1

S

2

Operation

L L L Clear

H L L B Minus A

L H L A Minus B

H H L A Plus B

L L H A⊕B

H L H A + B

L H H AB

H H H Preset

H = HIGH Voltage Level L = LOW Voltage Level

4-187

FAST AND LS TTL DATA

MC54/74F382

Figure 1. 16-Bit Ripple Carry ALU Expansion

SELECT

3

3

C

in

A0–A3B0–B

3

A4–A7B4–B

7

A8–A11B8–B

11

A12–A15B12–B

15

4 4

A B

C

n

S

F382

Cn+4

OVR

F12–F

15

F0–F

3

F4–F

7

F8–F

11

OVERFLOW

C

out

3

4 4

A B

C

n

S

F382

Cn+4

3

4 4

A B

C

n

S

F382

Cn+4

3

4 4

A B

C

n

S

F382

Cn+4

Toward

Output

Path Segment

Toward

F

Output

Cn + 4, OVR

Ai or Bi to Cn +

4

6.5 ns 6.5 ns

Cn to Cn +

4

6.3 ns 6.3 ns

Cn to Cn +

4

6.3 ns 6.3 ns
Cn to F 8.1 —
Cn to Cn + 4, OVR — 8.0 ns

Total Delay 27.2 ns 27.1 ns

Figure 2. 16-Bit Delay Tabulation

AC CHARACTERISTICS

54/74F 54F 74F

TA = +25°C TA = –55 to +125°C TA = 0 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 3.0 8.1 12 3.0 15 3.0 13

t

PHL

Cn to F

i

2.5 5.7 8.0 2.5 11 2.5 9.0

ns

t

PLH

Propagation Delay 4.0 10.4 15 4.0 18 4.0 16

t

PHL

Any A or B to Any F 3.5 8.2 11 3.5 14 3.5 12

ns

t

PLH

Propagation Delay 6.0 11 15 6.0 21 6.0 16

t

PHL

Si to F

i

4.0 8.2 20.5 4.0 23.5 4.0 21.5

ns

t

PLH

Propagation Delay 3.5 6.0 8.5 3.5 11.5 3.5 9.5

t

PHL

Ai or Bi to Cn +

4

3.0 6.5 9.0 3.0 12.5 3.0 10.5

ns

t

PLH

Propagation Delay 7.0 12.5 16.5 7.0 19.5 7.0 17.5

t

PHL

Si to OVR or Cn +

4

4.5 9.0 12 4.5 15 4.5 13

ns

t

PLH

Propagation Delay 2.5 5.6 8.0 2.5 11 2.5 9.0

t

PHL

Cn to Cn +

4

2.5 6.3 9.0 2.5 12 2.5 10

ns

t

PLH

Propagation Delay 3.5 8.0 11 3.5 14 3.5 12

t

PHL

Cn to OVR 3.5 7.1 10 3.5 13 3.5 11

ns

t

PLH

Propagation Delay 6.5 11.5 15.5 6.5 18.5 6.5 16.5

t

PHL

Ai or Bi to OVR 5.5 8.0 10.5 5.5 13.5 5.5 11.5

ns

4-188

FAST AND LS TTL DATA

MC54/74F382

TRUTH TABLE

INPUTS OUTPUTS

Function S

0

S1S

2

CnAnB

n

F

0

F

1

F

2

F

3

OVR Cn +

4

0 X X 0 0 0 0 1 1

CLEAR

0 0 0

1 X X 0 0 0 0 1 1
0 0 0 1 1 1 1 0 0

0 0 1 0 1 1 1 0 1
0 1 0 0 0 0 0 0 0
0 1 1 1 1 1 1 0 0

B MINUS A

100

1 0 0 0 0 0 0 0 1
1 0 1 1 1 1 1 0 1
1 1 0 1 0 0 0 0 0
1 1 1 0 0 0 0 0 1

0 0 0 1 1 1 1 0 0
0 0 1 0 0 0 0 0 0
0 1 0 0 1 1 1 0 1
0 1 1 1 1 1 1 0 0

A MINUS B

010

1 0 0 0 0 0 0 0 1
1 0 1 1 0 0 0 0 0
1 1 0 1 1 1 1 0 1
1 1 1 0 0 0 0 0 1

0 0 0 0 0 0 0 0 0
0 0 1 1 1 1 1 0 0
0 1 0 1 1 1 1 0 0

A PLUS B

0 1 1 0 1 1 1 0 1

110

1 0 0 1 0 0 0 0 0
1 0 1 0 0 0 0 0 1
1 1 0 0 0 0 0 0 1
1 1 1 1 1 1 1 0 1

X 0 0 0 0 0 0 0 0

X 0 1 1 1 1 1 0 0
A⊕B 0 0 1 0 1 0 1 1 1 1 0 0
X 1 1 0 0 0 0 1 1

1 1 0 1 1 1 1 1 1

X 0 0 0 0 0 0 0 0

X 0 1 1 1 1 1 0 0
A + B 1 0 1 X 1 0 1 1 1 1 0 0
0 1 1 1 1 1 1 0 0

1 1 1 1 1 1 1 1 1

X 0 0 0 0 0 0 1 1

X 0 1 0 0 0 0 0 0
AB 0 1 1 X 1 0 0 0 0 0 1 1
0 1 1 1 1 1 1 0 0

1 1 1 1 1 1 1 1 1

X 0 0 1 1 1 1 0 0

X 0 1 1 1 1 1 0 0
PRESET 1 1 1 X 1 0 1 1 1 1 0 0
0 1 1 1 1 1 1 0 0

1 1 1 1 1 1 1 1 1

1 = HIGH Voltage Level
0 = LOW Voltage Level
X = Immaterial