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CD54HC688

更新时间： 2024-11-22 21:59:15
品牌 Logo 应用领域
德州仪器 - TI 逻辑集成电路
页数 文件大小 规格书
7页 46K
描述
High Speed CMOS Logic 8-Bit Magnitude Comparator

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中文翻译

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CD54HC688 数据手册

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CD74HC688,  
CD74HCT688  
Data sheet acquired from Harris Semiconductor  
SCHS196  
High Speed CMOS Logic  
September 1997  
8-Bit Magnitude Comparator  
Features  
Description  
• Cascadable  
The Harris CD74HC688 and CD74HCT688 are 8-bit  
magnitude comparators designed for use in computer and  
logic applications that require the comparison of two 8-bit  
binary words. When the compared words are equal the  
output (Y) is low and can be used as the enabling input for  
the next device in a cascaded application.  
• Fanout (Over Temperature Range)  
[ /Title  
(CD74  
HC688  
,
- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads  
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads  
o
o
• Wide Operating Temperature Range . . . -55 C to 125 C  
• Balanced Propagation Delay and Transition Times  
CD74  
HCT68  
8)  
/Sub-  
ject  
(High  
Speed  
CMOS  
Ordering Information  
• Significant Power Reduction Compared to LSTTL  
Logic ICs  
PKG.  
o
PART NUMBER TEMP. RANGE ( C) PACKAGE  
NO.  
E20.3  
E20.3  
• HC Types  
CD74HC688E  
CD74HCT688E  
CD74HC688M  
CD74HCT688M  
CD54HC688  
NOTES:  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
20 Ld PDIP  
20 Ld PDIP  
- 2V to 6V Operation  
- High Noise Immunity: N = 30%, N = 30%of V  
IL IH CC  
at  
V
= 5V  
20 Ld SOIC M20.3  
20 Ld SOIC M20.3  
Wafer  
CC  
• HCT Types  
- 4.5V to 5.5V Operation  
- Direct LSTTL Input Logic Compatibility,  
V = 0.8V (Max), V = 2V (Min)  
IL  
IH  
- CMOS Input Compatibility, I ≤ 1µA at V , V  
OL OH  
1. When ordering, use the entire part number. Add the suffix 96 to  
obtain the variant in the tape and reel.  
l
2. Die for this part number is available which meets all electrical  
specifications. Please contact your local sales office or Harris  
customer service for ordering information.  
Pinout  
CD74HC688, CD74HCT688  
(PDIP, SOIC)  
TOP VIEW  
1
2
3
4
5
6
7
8
9
V
Y
E
A0  
B0  
A1  
B1  
A2  
B2  
A3  
B3  
20  
19  
CC  
18 B7  
17 A7  
16 B6  
15 A6  
14 B5  
13 A5  
12  
B4  
GND 10  
11 A4  
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.  
File Number 1646.1  
Copyright © Harris Corporation 1997  
1
1234567

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