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CD74AC280E 数据表(PDF) 1 Page - Texas Instruments

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部件名 CD74AC280E
功能描述  9-Bit Odd/Even Parity Generator/Checker
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

CD74AC280E 数据表(HTML) 1 Page - Texas Instruments

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Data sheet acquired from Harris Semiconductor
SCHS250
Features
• Buffered Inputs
• Typical Propagation Delay
- 10ns at VCC = 5V, TA = 25
oC, C
L = 50pF
• 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
• Balanced Propagation Delays
• AC Types Feature 1.5V to 5.5V Operation and
Balanced Noise Immunity at 30% of the Supply
±24mA Output Drive Current
- Fanout to 15 FAST™ ICs
- Drives 50
Ω Transmission Lines
Pinout
CD74AC280, CD74ACT280
(PDIP, SOIC)
TOP VIEW
Description
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.
Functional Diagram
I6
I7
NC
I8
∑E
∑O
GND
VCC
I5
I4
I3
I2
I1
I0
1
2
3
4
5
6
7
14
13
12
11
10
9
8
Ordering Information
PART
NUMBER
TEMP.
RANGE (oC)
PACKAGE
PKG.
NO.
CD74AC280E
0 to 70oC, -40 to 85,
-55 to 125
14 Ld PDIP
E14.3
CD74ACT280E
0 to 70oC, -40 to 85,
-55 to 125
14 Ld PDIP
E14.3
CD74AC280M
0 to 70oC, -40 to 85,
-55 to 125
14 Ld SOIC
M14.15
CD74ACT280M
0 to 70oC, -40 to 85,
-55 to 125
14 Ld SOIC
M14.15
NOTES:
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.
8
9
10
11
13
2
1
12
5
6
ODD
EVEN
I0
I1
I2
I3
I5
I6
I7
I4
4
I8
GND = 7
VCC = 14
NC = 3
August 1998
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
CD74AC280,
CD74ACT280
9-Bit Odd/Even Parity Generator/Checker
File Number
1957.1


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