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零件编号
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74F382 查看數據表(PDF) - Philips Electronics
零件编号
产品描述 (功能)
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74F382
Arithmetic Logic Unit
Philips Electronics
74F382 Datasheet PDF : 12 Pages
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Philips Semiconductors
Arithmetic logic unit
Product specification
74F382
FUNCTION SELECT TABLE
SELECT
S0
S1
S2
L
L
L
H
L
L
L
H
L
H
H
L
L
L
H
H
L
H
L
H
H
H
H
H
H = High voltage level
L = Low voltage level
Table 1. 16-Bit Delay Tabulation
PATH SEGMENT
Ai or Bi to Cn+4
Cn to Cn+4
TOWARD
F
6.5ns
6.3ns
Cn to Cn+4
Cn to F
Cn to Cn+4, OVR
Total Delay
6.3ns
8.1ns
–
27.2ns
OPERATING
MODE
Clear
B minus A
A minus B
A Plus B
A
ę
B
A+B
AB
Preset
OUTPUT
Cn+4, OVR
6.5ns
6.3ns
6.3ns
–
8.0ns
27.1ns
Table 2. Two’s Complement Arithmetic
MSB
LSB Numerical Values
L
L
L
L
0
L
L
L
H
1
L
L
H
L
2
L
L
H
H
3
L
H
L
L
4
L
H
L
H
5
L
H
H
L
6
L
H
H
H
7
H
L
L
L
–8
H
L
L
H
–7
H
L
H
L
–6
H
L
H
H
–5
H
H
L
L
–4
H
H
L
H
–3
H
H
H
L
–2
H
H
H
H
–1
H = High voltage level
L = Low voltage level
APPLICATION
C
IN
SELECT
3
A0–A3 B0–B3
4
4
A
B
Cn
Cn+4
S
74F382
F
3
A4–A7 B4–B7
4
4
A
B
Cn
Cn+4
S
74F382
F
3
A8–A11 B8–B11
4
4
A
B
Cn
Cn+4
S
74F382
F
3
A12–A15 B12–B15
4
4
A
B
Cn
Cn+4
S
74F382
F
OVR
3
C
OUT
OVERFLOW
F0–F3
F4–F7
F8–F11
Figure 1. 16-bit Look-ahead Carry ALU Expansion
F12–F15
SF00939
1990 Jul 12
6
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