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SN74AS882ANT

更新时间： 2024-11-19 23:03:11
品牌 Logo 应用领域
德州仪器 - TI 逻辑集成电路光电二极管
页数 文件大小 规格书
9页 142K
描述
32-BIT LOOK-AHEAD CARRY GENERATORS

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SN74AS882ANT 数据手册

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SN54AS882A, SN74AS882A  
32-BIT LOOK-AHEAD CARRY GENERATORS  
SDAS235 – D2661, DECEMBER 1982 – REVISED NOVEMBER 1985  
SN54AS882A . . . JT PACKAGE  
SN74AS882A . . . DW OR NT PACKAGE  
• Directly Compatible With ’AS181B,  
’AS1181, ’AS881B, and ’AS1881 ALUs  
(TOP VIEW)  
• Package Options Include Plastic Small  
Outline Packages, Both Plastic and  
Ceramic Chip Carriers, and Standard  
Plastic and Ceramic 300-mil DIPs  
C
V
CC  
NC  
1
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
n
G0  
P0  
G1  
P1  
2
C
3
n + 32  
• Capable of Anticipating the Carry Across a  
P7  
G7  
P6  
G6  
C
4
Group of Eight 4-Bit Binary Adders  
5
C
• Cascadable to Perform Look-Ahead Across  
6
n + 8  
G2  
P2  
G3  
P3  
n-Bit Adders  
7
8
n + 24  
• Typical Carry Time, C to Any C , is Less  
n
n+i  
P5  
G5  
P4  
G4  
9
Than 6 ns  
10  
11  
12  
• Dependable Texas Instruments Quality and  
C
n – 16  
GND  
Reliability  
description  
SN54AS882A . . . FK PACKAGE  
The ’AS882A is a high-speed look-ahead carry  
generator capable of anticipating the carry across  
a group of eight 4-bit adders permitting the  
designertoimplementlook-aheadfora32-bitALU  
with a single package or, by cascading ’AS882As,  
full look-ahead is possible across n-bit adders.  
SN74AS882A . . . DW OR NT PACKAGE  
(TOP VIEW)  
4
3
2 1 28 27 26  
The SN54AS882A is characterized for operation  
over the full military temperature range of –55°C  
to 125°C. The SN74AS882A is characterized for  
operation from 0°C to 70°C.  
5
G1  
P1  
25 P7  
G7  
23 P6  
6
24  
C
7
n + 8  
NC  
NC  
22  
8
G2  
P2  
G3  
G6  
C
P5  
9
21  
20  
19  
’AS882A LOGIC EQUATIONS  
10  
n + 24  
11  
C
C
=
=
G1 + P1G0+P1P0C  
n
n+8  
12 13 14 15 16 17 18  
G3 + P3G2 + P3P2G1 + P3P2P1G0  
+ P3P2P1P0C  
n+16  
n
C
=
=
G5 + P5G4 + P5P4G3 + P5P4P3G2  
+ P5P4P3P2G1 + P5P4P3P2P1G0  
n+24  
n+32  
NC – No internal connection  
+ P5P4P3P2P1P0C  
n
C
G7 + P7G6 + P7P6G5 + P7P6P5G4  
+ P7P6P5P4G3 + P7P6P5P4P3G2  
+ P7P6P5P4P3P2G1 + P7P6P5P4P3P2P1G0  
+ P7P6P5P4P3P2P1P0C  
n
Copyright 1985, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...9

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