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| 74F280 9-Bit Parity Generator/Checker April 1988 Revised September 2000 74F280 9-Bit Parity Generator/Checker General Description The F280 is a high-speed parity generator/checker that accepts nine bits of input data and detects whether an even or an odd number of these inputs is HIGH. If an even number of inputs is HIGH, the Sum Even output is HIGH. If an odd number is HIGH, the Sum Even output is LOW. The Sum Odd output is the complement of the Sum Even output. Ordering Code: Order Number 74F280SC 74F280SJ 74F280PC Package Number M14A M14D N14A Package Description 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter "X" to the ordering code. Logic Symbols Connection Diagram IEEE/IEC (c) 2000 Fairchild Semiconductor Corporation DS009512 www.fairchildsemi.com 74F280 Unit Loading/Fan Out Pin Names I0-I8 Description Data Inputs Odd Parity Output Even Parity Output U.L. HIGH/LOW 1.0/1.0 50/33.3 50/33.3 Input IIH/IIL Output IOH/IOL 20 A/-0.6 mA O E -1 mA/20 mA -1 mA/20 mA Truth Table Number of HIGH Inputs I0-I8 0, 2, 4, 6, 8 1, 3, 5, 7, 9 H = HIGH Voltage Level L = LOW Voltage Level Outputs Even H L Odd L H Logic Diagram Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. www.fairchildsemi.com 2 74F280 Absolute Maximum Ratings(Note 1) Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias VCC Pin Potential to Ground Pin Input Voltage (Note 2) Input Current (Note 2) Voltage Applied to Output in HIGH State (with VCC = 0V) Standard Output 3-STATE Output Current Applied to Output in LOW State (Max) ESD Last Passing Voltage (Min) twice the rated IOL (mA) 4000V -65C to +150C -55C to +125C -55C to +150C -0.5V to +7.0V -0.5V to +7.0V -30 mA to +5.0 mA Recommended Operating Conditions Free Air Ambient Temperature Supply Voltage 0C to +70C +4.5V to +5.5V -0.5V to VCC -0.5V to +5.5V Note 1: Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired. Functional operation under these conditions is not implied. Note 2: Either voltage limit or current limit is sufficient to protect inputs. DC Electrical Characteristics Symbol VIH VIL VCD VOH VOL IIH IBVI ICEX VID IOD IIL IOS ICCH Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage Output LOW Voltage Input HIGH Current Input HIGH Current Breakdown Test Output HIGH Leakage Current Input Leakage Test Output Leakage Circuit Current Input LOW Current Output Short-Circuit Current Power Supply Current -60 25 4.75 3.75 -0.6 -150 38 10% VCC 5% VCC 10% VCC 2.5 2.7 0.5 5.0 7.0 50 V A A A V A mA mA mA Min Max Max Max 0.0 0.0 Max Max Max Min 2.0 0.8 -1.2 Typ Max Units V V V V Min Min VCC Conditions Recognized as a HIGH Signal Recognized as a LOW Signal IIN = -18 mA IOH = -1 mA IOH = -1 mA IOL = 20 mA VIN = 2.7V VIN = 7.0V VOUT = VCC IID = 1.9 A All Other Pins Grounded VIOD = 150 mV All Other Pins Grounded VIN = 0.5V VOUT = 0V VO = HIGH AC Electrical Characteristics TA = +25C Symbol Parameter Min tPLH tPHL tPLH tPHL Propagation Delay In to E Propagation Delay In to O 6.5 6.5 6.0 6.5 VCC = +5.0V CL = 50 pF Typ 10.0 11.0 10.0 11.0 Max 15.0 16.0 15.0 16.0 TA = -55C to +125C VCC = 5.0V CL = 50 pF Min 6.5 6.5 5.0 6.5 Max 20.0 21.0 20.0 21.0 TA = 0C to +70C VCC = 5.0V CL = 50 pF Min 6.5 6.5 6.0 6.5 Max 16.0 17.0 16.0 17.0 ns ns Units 3 www.fairchildsemi.com 74F280 Physical Dimensions inches (millimeters) unless otherwise noted 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow Package Number M14A www.fairchildsemi.com 4 74F280 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M14D 5 www.fairchildsemi.com 74F280 9-Bit Parity Generator/Checker Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N14A Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. www.fairchildsemi.com 6 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com This datasheet has been download from: www..com Datasheets for electronics components. |
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