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CD74HC280 Folha de dados(PDF) 1 Page - Texas Instruments

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Nome de Peças CD74HC280
Descrição Electrónicos  High Speed CMOS Logic 9-Bit Odd/Even Parity Generator/Checker
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Fabricante Electrônico  TI [Texas Instruments]
Página de início  http://www.ti.com
Logo TI - Texas Instruments

CD74HC280 Folha de dados(HTML) 1 Page - Texas Instruments

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Data sheet acquired from Harris Semiconductor
SCHS175
Features
• Typical Propagation Delay = 17ns at VCC = 5V,
CL = 15pF, TA = 25
oC
• Replaces 74LS180 Types
• Easily Cascadable
• Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55oC to 125oC
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC
at VCC = 5V
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
VIL= 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH
Description
The
Harris
CD74HC280
and
CD74HCT280
are
9-bit
odd/even parity, generator checker devices. Both even and
odd parity outputs are available for checking or generating
parity for words up to nine bits long. Even parity is indicated
(
ΣE output is high) when an even number of data inputs is
high. Odd parity is indicated (
ΣO output is high) when an odd
number of data inputs is high. Parity checking for words larger
than 9 bits can be accomplished by tying the
ΣE output to any
input of an additional HC/HCT280 parity checker.
Ordering Information
Pinout
CD74HC280, CD74HCT280
(PDIP)
TOP VIEW
Functional Diagram
I6
I7
NC
I8
ΣE
ΣO
GND
VCC
I5
I4
I3
I2
I1
I0
1
2
3
4
5
6
7
14
13
12
11
10
9
8
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
November 1997
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
© Harris Corporation 1997
CD74HC280,
CD74HCT280
High Speed CMOS Logic
9-Bit Odd/Even Parity Generator/Checker
File Number
1669.1
[ /Title
(CD74
HC280
,
CD74
HCT28
0)
/Sub-
ject
(High
Speed
CMOS
Logic
9-Bit
Odd/E
ven
Parity


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