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MC74AC646DW データシート(PDF) 3 Page - ON Semiconductor |
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MC74AC646DW データシート(HTML) 3 Page - ON Semiconductor |
3 / 12 page MC74AC646, MC74ACT646 http://onsemi.com 3 FUNCTION TABLE Inputs Data I/O* Operation or F nction G DIR CAB CBA SAB SBA A0–A7 B0–B7 Operation or Function H H X X H or L H or L X X X X Input Input Isolation Store A and B Data L L L L X X X X X X L H Output Input Real Time B Data to A Bus Stored B Data to A Bus L L H H X H or L X X L H X X Input Output Real Time A Data to B Bus Stored A Data to B Bus *The data output functions may be enabled or disabled by various signals at the G and DIR inputs. Data input functions are always enabled; i.e., data at the bus pins will be stored on every LOW–to–HIGH transition of the appropriate clock inputs. NOTE: H = HIGH Voltage Level; L = LOW Voltage Level; X = Immaterial; = LOW–to–HIGH Transition MAXIMUM RATINGS* Symbol Parameter Value Unit VCC DC Supply Voltage (Referenced to GND) –0.5 to +7.0 V Vin DC Input Voltage (Referenced to GND) –0.5 to VCC +0.5 V Vout DC Output Voltage (Referenced to GND) –0.5 to VCC +0.5 V Iin DC Input Current, per Pin ±20 mA Iout DC Output Sink/Source Current, per Pin ±50 mA ICC DC VCC or GND Current per Output Pin ±50 mA Tstg Storage Temperature –65 to +150 °C *Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recom- mended Operating Conditions. RECOMMENDED OPERATING CONDITIONS Symbol Parameter Min Typ Max Unit V Supply Voltage ′AC 2.0 5.0 6.0 V VCC Supply Voltage ′ACT 4.5 5.0 5.5 V Vin, Vout DC Input Voltage, Output Voltage (Ref. to GND) 0 – VCC V VCC @ 3.0 V – 150 – tr, tf Input Rise and Fall Time (Note 1) ′AC Devices except Schmitt Inputs VCC @ 4.5 V – 40 – ns/V r, f ′AC Devices except Schmitt Inputs VCC @ 5.5 V – 25 – ttf Input Rise and Fall Time (Note 2) VCC @ 4.5 V – 10 – ns/V tr, tf In ut Rise and Fall Time (Note 2) ′ACT Devices except Schmitt Inputs VCC @ 5.5 V – 8.0 – ns/V TJ Junction Temperature (PDIP) – – 140 °C TA Operating Ambient Temperature Range –40 25 85 °C IOH Output Current – High – – –24 mA IOL Output Current – Low – – 24 mA 1. Vin from 30% to 70% VCC; see individual Data Sheets for devices that differ from the typical input rise and fall times. 2. Vin from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times. |
同様の部品番号 - MC74AC646DW |
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同様の説明 - MC74AC646DW |
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