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CD74HCT688M96E4

更新时间： 2024-11-23 05:18:23
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德州仪器 - TI /
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14页 358K
描述
High-Speed CMOS Logic 8-Bit Magnitude Comparator

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CD74HCT688M96E4 数据手册

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CD54HC688, CD74HC688,  
CD54HCT688, CD74HCT688  
Data sheet acquired from Harris Semiconductor  
SCHS196C  
High-Speed CMOS Logic  
8-Bit Magnitude Comparator  
September 1997 - Revised August 2003  
Features  
Description  
• Cascadable  
The ’HC688 and ’HCT688 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  
o
• Significant Power Reduction Compared to LSTTL  
Logic ICs  
PART NUMBER  
CD54HC688F3A  
CD54HCT688F3A  
CD74HC688E  
TEMP. RANGE ( C)  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
PACKAGE  
20 Ld CERDIP  
20 Ld CERDIP  
20 Ld PDIP  
• HC Types  
- 2V to 6V Operation  
- High Noise Immunity: N = 30%, N = 30%of V  
IL IH  
at  
CC  
V
= 5V  
CC  
CD74HC688M  
20 Ld SOIC  
20 Ld SOIC  
20 Ld SOP  
• HCT Types  
CD74HC688M96  
CD74HC688NSR  
CD74HC688PWR  
CD74HC688PWT  
CD74HCT688E  
CD74HCT688M  
CD74HCT688M96  
- 4.5V to 5.5V Operation  
- Direct LSTTL Input Logic Compatibility,  
V = 0.8V (Max), V = 2V (Min)  
IL IH  
20 Ld TSSOP  
20 Ld TSSOP  
20 Ld PDIP  
- CMOS Input Compatibility, I ≤ 1µA at V , V  
OL OH  
l
20 Ld SOIC  
20 Ld SOIC  
NOTE: When ordering, use the entire part number. The suffixes 96  
and R denote tape and reel. The suffix T denotes a small-quantity  
reel of 250.  
Pinout  
CD54HC688, CD54HCT688 (CERDIP)  
CD74HC688 (PDIP, SOIC, SOP, TSSOP)  
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.  
Copyright © 2003, Texas Instruments Incorporated  
1
1234567...14

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