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CD74HC280 Folha de dados(PDF) 1 Page - Texas Instruments |
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CD74HC280 Folha de dados(HTML) 1 Page - Texas Instruments |
1 / 5 page 1 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 |
Nº de peça semelhante - CD74HC280 |
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Descrição semelhante - CD74HC280 |
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