L4C381
DEVICES INCORPORATED
16-bit Cascadable ALU
SWITCHING CHARACTERISTICS — COMMERCIAL OPERATING RANGE (0°C to +70°C)
GUARANTEED MAXIMUM COMBINATIONAL DELAYS Notes 9, 10 (ns)
*
*
*
L4C381-26
To Output
L4C381-55
L4C381-40
From Input
F15-F0 P, G OVF, Z C16 F15-F0 P, G OVF, Z C16 F15-F0 P, G OVF, Z C16
FTAB = 0, FTF = 0
Clock
32
—
—
38
—
42
53
34
42
36
22
42
26
—
—
30
—
32
44
28
34
32
20
35
22
—
—
22
—
22
26
18
22
22
18
22
C0
S2-S0, OSA, OSB
FTAB = 0, FTF = 1
Clock
56
37
55
38
—
42
53
34
42
36
22
42
46
30
40
30
—
32
44
28
34
32
20
35
28
22
26
22
—
22
26
18
22
22
18
22
C0
S2-S0, OSA, OSB
FTAB = 1, FTF = 0
A15-A0, B15-B0
Clock
—
32
—
—
36
—
—
42
46
—
34
42
37
—
22
42
—
26
—
—
30
—
—
32
40
—
28
34
32
—
20
35
—
22
—
—
22
—
—
22
22
—
18
22
22
—
18
22
C0
S2-S0, OSA, OSB
FTAB = 1, FTF = 1
A15-A0, B15-B0
Clock (OSA, OSB = 0)
C0
55
56
37
55
36
38
—
42
46
53
34
42
37
36
22
42
40
46
30
40
30
30
—
32
40
44
28
34
32
32
20
35
26
28
22
26
22
22
—
22
22
26
18
22
22
22
18
22
S2-S0, OSA, OSB
GUARANTEED MINIMUM SETUP AND HOLD TIMES WITH RESPECT TO CLOCK RISING EDGE Notes 9, 10 (ns)
*
*
*
L4C381-55
FTAB = 0 FTAB = 1
Setup Hold Setup Hold Setup Hold Setup Hold Setup Hold Setup Hold
L4C381-40
L4C381-26
FTAB = 0 FTAB = 1
FTAB = 0 FTAB = 1
Input
A15-A0, B15-B0
C0
8
2
0
0
2
35
21
44
10
2
0
0
2
8
2
0
0
2
28
16
32
10
2
0
0
2
8
8
2
0
0
2
16
8
2
0
0
2
21
44
10
16
32
10
S2-S0, OSA, OSB
ENA, ENB, ENF
18
8
18
8
TRI-STATE ENABLE/DISABLE TIMES Notes 9, 10, 11 (ns)
CLOCK CYCLE TIME AND PULSE WIDTH Notes 9, 10 (ns)
*
*
*
*
*
*
L4C381-26
L4C381-55
L4C381-40 L4C381-26
L4C381-55
L4C381-40
Minimum Cycle Time
Highgoing Pulse
Lowgoing Pulse
tENA
tDIS
20
20
18
18
16
16
43
15
15
34
10
10
20
10
10
*DISCONTINUED SPEED GRADE
Arithmetic Logic Units
08/16/2000–LDS.381-P
4
LOGIC [ LOGIC DEVICES INCORPORATED ]
