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SN74ALS29818DWR PDF预览

SN74ALS29818DWR

更新时间: 2024-11-19 12:22:31
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德州仪器 - TI /
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描述
8-BIT DIAGNOSTICS/PIPELINE REGISTERS

SN74ALS29818DWR 数据手册

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ꢀꢁ ꢂꢃ ꢄꢅ ꢀ ꢆꢇ ꢈ ꢉ ꢊꢀ ꢁꢂ ꢃꢄ ꢅꢀ ꢋꢈ ꢆꢇ ꢆ  
ꢆ ꢌꢍꢎ ꢏꢊ ꢐꢎꢄ ꢑꢁꢒ ꢀ ꢏꢎ ꢓꢀꢔ ꢕꢎꢕ ꢖꢅ ꢎꢁ ꢖꢊꢗꢖ ꢑ ꢎꢀ ꢏꢖ ꢗ ꢀ  
SDAS105A − JANUARY 1986 − REVISED OCTOBER 1986  
High-Speed 8-Bit Parallel Pipeline Register  
Serial Shadow Register With Right-Shift Only  
SN74ALS819 . . . DW OR JT PACKAGE  
(TOP VIEW)  
PE  
SRCLK  
DQ0  
DQ1  
DQ2  
DQ3  
DQ4  
DQ5  
DQ6  
V
CC  
1
2
3
4
5
6
7
8
9
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
’ALS29818 Performs Parallel-to-Serial and  
MODE  
Serial-to-Parallel Conversion  
Y0  
Y1  
Y2  
Y3  
Y4  
Y5  
Y6  
Y7  
Designed Specifically for Use in Applications  
Such As:  
Write Control Store (’ALS29818)  
Serial Shadow-Register Diagnostics  
’ALS819 Provides Even-Parity Output  
DQ7 10  
SDI  
GND  
11  
12  
SDO  
ORCLK  
Low Power Dissipation . . . 215 mW Typical  
’ALS29818 is Functionally Equivalent to AMD  
SN74ALS819 . . . FN PACKAGE  
(TOP VIEW)  
AM29818  
Package Options include Plastic Small Outline  
Packages, Standard Plastic DIPs, and Plastic  
Chip Carriers  
4 3 2 1 28 27 26  
Y1  
Y2  
Y3  
NC  
Y4  
Y5  
5
6
7
8
9
10  
11  
DQ1  
DQ2  
DQ3  
NC  
DQ4  
DQ5  
DQ6  
25  
24  
23  
description  
The SN74ALS819 and SN74ALS29818 are 8-bit  
pipeline registers each with an on-chip shadow  
register. They are for use in applications such as  
write control store and shadow register diagnos-  
tics.  
22  
21  
20  
19 Y6  
12 1314 1516 1718  
The output registers of the ’ALS819 and  
’ALS29818 are loaded in parallel from either the  
I/O port (DQ0āāDQ7) or the shadow register. The  
shadow register of the ’ALS2981A 8 can be  
loaded serially or from either the I/O port (Y0āāY7)  
or the pipeline register. The ’ALS819 shadow  
register can be loaded serially or from the I/O port  
(DQ0āāDQ7). In addition, the ’ALS819 provides a  
Parity-Even (PE) output, which monitors parity of  
the output register. Operation of these devices is  
controlled by the Mode and SDI inputs as shown  
in the function table.  
SN74ALS29818 . . . DW OR NT PACKAGE  
(TOP VIEW)  
OEY  
SRCLK  
DQ0  
V
CC  
1
2
3
4
5
6
7
8
9
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
MODE  
Y0  
DQ1  
Y1  
DQ2  
Y2  
DQ3  
Y3  
DQ4  
Y4  
DQ5  
Y5  
DQ6  
Y6  
DQ7 10  
SDI 11  
Y7  
SDO  
ORCLK  
12  
GND  
The SN74ALS819 and SN74ALS29818 are  
characterized for operation from 0°C to 70°C.  
SN74ALS29818 . . . FN PACKAGE  
(TOP VIEW)  
4
3
2 1 28 27 26  
25  
5
6
7
8
9
Y1  
Y2  
Y3  
NC  
Y4  
Y5  
DQ1  
DQ2  
DQ3  
NC  
DQ4  
DQ5  
DQ6  
24  
23  
22  
21  
20  
10  
11  
19 Y6  
12 13 14 1516 1718  
NC − No internal connection  
ꢏꢥ  
Copyright 1986, Texas Instruments Incorporated  
ꢡ ꢥ ꢢ ꢡꢚ ꢛꢯ ꢝꢜ ꢠ ꢨꢨ ꢦꢠ ꢞ ꢠ ꢟ ꢥ ꢡ ꢥ ꢞ ꢢ ꢪ  
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
POST OFFICE BOX 1443 HOUSTON, TEXAS 77001  

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