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CD74ACT280

更新时间： 2024-11-04 22:40:23
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
5页 31K
描述
9-Bit Odd/Even Parity Generator/Checker

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CD74ACT280 数据手册

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CD74AC280,  
CD74ACT280  
Data sheet acquired from Harris Semiconductor  
SCHS250  
August 1998  
9-Bit Odd/Even Parity Generator/Checker  
Features  
Description  
• Buffered Inputs  
The CD74AC280 and CD74ACT280 9-bit odd/even parity  
generator/checkers that utilize the Harris Advanced CMOS  
Logic technology. Bothe even and odd parity outputs are  
available for checking or generating parity for words up to  
nine bits long. Even parity is indicated (∑Eoutput is HIGH)  
when an even number of data inputs is HIGH. Odd parity is  
indicated (∑O output is HIGH) when an odd number of data  
inputs is HIGH. Parity checking for words larger than nine  
bits can be accomplished by tying the ∑E output to any input  
of an additional AC/ACT280 parity checker.  
• Typical Propagation Delay  
o
- 10ns at V  
= 5V, T = 25 C, C = 50pF  
A L  
CC  
• Exceeds 2kV ESD Protection MIL-STD-883, Method  
3015  
• SCR-Latchup-Resistant CMOS Process and Circuit  
Design  
• Speed of Bipolar FAST™/AS/S with Significantly  
Reduced Power Consumption  
Ordering Information  
• Balanced Propagation Delays  
• AC Types Feature 1.5V to 5.5V Operation and  
Balanced Noise Immunity at 30% of the Supply  
PART  
NUMBER  
TEMP.  
RANGE ( C)  
PKG.  
NO.  
o
PACKAGE  
o
CD74AC280E  
CD74ACT280E  
CD74AC280M  
0 to 70 C, -40 to 85, 14 Ld PDIP  
-55 to 125  
E14.3  
• ±24mA Output Drive Current  
- Fanout to 15 FAST™ ICs  
o
0 to 70 C, -40 to 85, 14 Ld PDIP  
E14.3  
- Drives 50Ω Transmission Lines  
-55 to 125  
o
0 to 70 C, -40 to 85, 14 Ld SOIC  
M14.15  
M14.15  
-55 to 125  
Pinout  
o
CD74ACT280M 0 to 70 C, -40 to 85, 14 Ld SOIC  
-55 to 125  
CD74AC280, CD74ACT280  
(PDIP, SOIC)  
NOTES:  
TOP VIEW  
1. When ordering, use the entire part number. Add the suffix 96 to  
obtain the variant in the tape and reel.  
2. Wafer and die for this part number is available which meets all elec-  
trical specifications. Please contact your local sales office or Harris  
customer service for ordering information.  
I6  
I7  
1
2
3
4
5
6
7
14 V  
CC  
13 I5  
12 I4  
11 I3  
10 I2  
NC  
I8  
Functional Diagram  
∑E  
∑O  
GND  
9
8
I1  
I0  
8
I0  
9
I1  
10  
I2  
I3  
5
6
∑ EVEN  
∑ ODD  
11  
12  
13  
1
I4  
I5  
I6  
2
4
I7  
I8  
GND = 7  
= 14  
V
CC  
NC = 3  
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.  
FAST™ is a Trademark of Fairchild Semiconductor.  
Copyright © Harris Corporation 1998  
File Number 1957.1  
1
12345

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