MC54F381J [MOTOROLA]
4-BIT ARITHMETIC LOGIC UNIT; 4位算术逻辑单元
| 型号： | MC54F381J |
| 厂家： | 
MOTOROLA |
| 描述： | 4-BIT ARITHMETIC LOGIC UNIT |
| 文件： | 总7页 (文件大小：80K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
For:char
Printed on:Mon, Feb 6, 1995 09:49:45
From book:DL121CH4 (5) VIEW
Document:MC74F381 (5) VIEW
Last saved on:Fri, Feb 3, 1995 16:06:52
MC54/74F381
4-BIT ARITHMETIC LOGIC UNIT
The MC54/74F381 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. Carry Propagate and Generate outputs are provided
for use with the F182 Carry Lookahead Generator for high-speed expansion
to longer word lengths. For ripple expansion, refer to the F382 ALU data
sheet.
4-BIT ARITHMETIC LOGIC UNIT
FAST SCHOTTKY TTL
• Low Input Loading Minimizes Drive Requirements
• Performs Six Arithmetic and Logic Functions
• Selectable Low (Clear) and High (Preset) Functions
• Carry Generate and Propagate Outputs for use with
Carry Lookahead Generator
J SUFFIX
CERAMIC
CONNECTION DIAGRAM
CASE 732-03
V
A
B
A
B
C
P
G
F
F
2
CC
20
2
2
3
3
n
3
20
19
18
17
16
15
14
13
12
11
1
N SUFFIX
PLASTIC
CASE 738-03
20
1
1
2
3
4
5
6
8
9
10
7
A
B
A
B
S
S
S
F
F
1
GND
1
1
0
0
0
1
2
0
DW SUFFIX
SOIC
CASE 751D-03
20
LOGIC SYMBOL
1
3
4
1
2
19 18 17 16
ORDERING INFORMATION
A
B
A
B
A
B
A
B
0
0
1
1
2
2
3 3
15
7
C
MC54FXXXJ
MC74FXXXN Plastic
MC74FXXXDW SOIC
Ceramic
n
13
14
G
P
V
= PIN 20
S
S
S
CC
2
1
0
GND = PIN 10
6
5
F
F
F
F
3
0
1
2
8
9
11
12
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
4.5
–55
0
Typ
Max
5.5
Unit
V
Supply Voltage
54, 74
54
5.0
25
25
V
CC
125
70
T
A
Operating Ambient Temperature Range
°C
74
I
I
Output Current — High
Output Current — Low
54, 74
54, 74
–1.0
20
mA
mA
OH
OL
FAST AND LS TTL DATA
4-179
MC54/74F381
LOGIC DIAGRAM
C
B
n
0
Please note that this diagram is provided
only for the understanding of logic
operations and should not be used to
estimate propagation delays.
F
F
F
F
0
1
2
3
A
B
0
1
A
B
1
2
A
B
2
3
P
A
S
3
F381
ONLY
G
0
OVR
F382
ONLY
C +4
n
S
S
1
2
FAST AND LS TTL DATA
4-180
MC54/74F381
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Min
Typ
Max
Symbol
Parameter
Input HIGH Voltage
Unit
V
Test Conditions
Guaranteed Input HIGH Voltage
Guaranteed Input LOW Voltage
V
IH
2.0
V
V
Input LOW Voltage
0.8
V
IL
Input Clamp Diode Voltage
–1.2
V
I
I
I
I
= –18 mA
V
V
V
V
= MIN
IK
IN
CC
CC
CC
CC
54, 74
74
2.5
2.7
3.4
3.4
V
= –1.0 mA
= –1.0 mA
= 20 mA
= 2.7 V
= 4.5 V
= 4.75 V
= MIN
OH
OH
OL
V
Output HIGH Voltage
Output LOW Voltage
Input HIGH Current
Input LOW Current
OH
OL
V
V
0.35
0.5
20
V
µA
µA
V
IN
IN
I
I
V
CC
= MAX
IH
100
V
= 7.0 V
S –S Inputs
–0.6
–2.4
mA
mA
V
V
= 0.5 V
= 0.5 V
0
2
IN
VCC = MAX
IL
Other Inputs
IN
Output Short Circuit
Current (Note 2)
I
I
–60
–150
89
mA
mA
V
= 0 V
V
V
= MAX
= MAX
OS
OUT
CC
S –S = GND;
0
2
Power Supply Current
59
CC
CC
Other Inputs HIGH
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 S –S determine the
ands, LOW for active-LOW operands) into the C input of the
n
0
2
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 lev-
els in the same convention. In the Subtract operating modes,
it is necessary to force a carry (HIGH for active-HIGH oper-
least significant package.
The Carry Generate (G) and Carry Propagate (P) outputs
supply input signals to the F182 carry lookahead generator for
expansion to longer word length, as shown in Figure 1. Note
that an F382 ALU is used for the most significant package.
Typical delays for Figure 1 are given in Figure 2.
FUNCTION SELECT TABLE
Select
S
0
S
1
S
2
Operation
L
H
L
H
L
H
L
L
L
H
H
L
L
H
H
L
L
L
Clear
B Minus A
A Minus B
A Plus B
A B
A + B
AB
L
H
H
H
H
H
Preset
H = HIGH Voltage Level
L = LOW Voltage Level
FAST AND LS TTL DATA
4-181
MC54/74F381
A –A
0
B –B
A –A
B –B
A –A
8
B –B
11
A
–A
B
–B
3
0
3
4
7
4
7
11
8
12 15
12 15
4
4
4
4
4
4
4
4
A
B
P
A
B
P
A
B
P
A
B
C
C
C
n
C
S
C
n
C
n
C +4
n
F382
OUT
OVERFLOW
IN
n
F381
F381
G
F381
G
S
F
S
F
S
OVR
F
G
F
3
3
3
3
SELECT
3
F –F
F –F
F –F
F
–F
12 15
0
3
4
7
8
11
G
P
C
G
P
C
G
P
C
n+z
0
0
n+z
1
1
n+y
2
2
C
n
F182 CLA
Figure 1. 16-Bit Lookahead Carry ALU Expansion
Toward
F
Output
C
+ 4, OVR
Path Segment
n
A or B to P
7.2 ns
6.2 ns
8.1 ns
—
7.2 ns
6.2 ns
—
i
i
P to C
(’F182)
i
n + j
C
C
to F
to C
n + 4
n
n
, OVR
8.0 ns
Total Delay
21.5 ns
21.4 ns
Figure 2. 16-Bit Delay Tabulation
AC CHARACTERISTICS
54/74F
= +25°C
54F
= – 55 to +125°C
74F
T
V
C
T
V
T
A
= 0 to +70°C
= 5.0 V ±10%
C = 50 pF
L
A
A
= +5.0 V
= 50 pF
= 5.0 V ±10%
V
CC
CC
L
CC
C
= 50 pF
L
Min
Typ
Max
Min
Max
Min
Max
Symbol
Parameter
Unit
t
t
Propagation Delay
2.5
2.5
8.1
5.7
12
8.0
2.5
2.5
15
11
2.5
2.5
13
9.0
PLH
PHL
ns
C
to F
n
i
t
t
Propagation Delay
Any A or B to Any F
4.0
3.5
10.4
8.2
15
11
4.0
3.5
18
14
4.0
3.5
16
12
PLH
PHL
ns
ns
ns
ns
ns
t
t
Propagation
4.5
4.0
8.3
8.2
20
13
4.5
4.0
23.5
16
4.5
4.0
21.5
14
PLH
PHL
S to F
i
i
t
t
Propagation Delay
A or B to G
3.0
4.0
6.4
6.8
9.0
10
3.0
4.0
12
13
3.0
4.0
10
11
PLH
PHL
i
i
t
t
Propagation Delay
A or B to P
2.5
3.5
7.2
6.5
10.5
9.5
2.5
3.5
13.5
12.5
2.5
3.5
11.5
10.5
PLH
PHL
i
i
t
t
Propagation Delay
S to G or P
4.0
4.5
7.8
10.2
12
13.5
4.0
4.5
15
16.5
4.0
4.5
13
14.5
PLH
PHL
i
FAST AND LS TTL DATA
4-182
MC54/74F381
TRUTH TABLE
INPUTS
OUTPUTS
FUNCTION
CLEAR
S
S
S
C
A
B
F
F
F
F
3
G
P
0
1
2
n
n
n
0
1
2
0
0
0
X
X
X
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
1
0
0
1
0
1
1
0
1
1
0
1
0
1
0
0
1
1
0
1
0
1
0
0
1
1
0
1
0
1
0
0
1
0
1
1
1
0
1
1
0
0
1
0
0
0
1
0
B MINUS A
A MINUS B
A PLUS B
1
0
1
0
1
1
0
0
0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
1
0
0
1
0
1
1
0
1
0
1
1
0
0
1
0
1
0
1
1
0
0
1
0
1
0
1
1
0
0
1
0
1
1
0
1
1
1
0
1
0
1
0
0
0
1
0
0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
1
0
1
0
0
1
0
1
1
1
0
0
0
1
0
1
1
1
0
0
0
1
0
1
1
1
0
0
0
1
1
1
1
0
1
1
1
0
1
0
0
0
1
0
0
0
X
X
X
X
0
0
1
1
0
1
0
1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
0
A B
0
1
0
1
0
0
1
1
1
1
1
X
X
X
X
0
0
1
1
0
1
0
1
0
1
1
1
0
1
1
1
0
1
1
1
0
1
1
1
0
1
1
1
0
1
1
0
A+B
X
X
X
X
0
0
1
1
0
1
0
1
0
0
0
1
0
0
0
0
0
0
1
0
0
0
1
0
1
0
1
0
1
0
0
AB
1
X
X
X
X
0
0
1
1
0
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
PRESET
1
1 = HIGH Voltage Level
0 = LOW Voltage Level
X = Immaterial
FAST AND LS TTL DATA
4-183
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