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74VHC245 Datasheet(PDF) 2 Page - STMicroelectronics |
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74VHC245 Datasheet(HTML) 2 Page - STMicroelectronics |
2 / 12 page 74VHC245 2/12 Figure 2: Input Equivalent Circuit Table 2: Pin Description Table 3: Truth Table X : Don‘t Care Z : High Impedance Table 4: Absolute Maximum Ratings Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied Table 5: Recommended Operating Conditions 1) VIN from 30% to 70% of VCC PIN N° SYMBOL NAME AND FUNCTION 1 DIR Directional Control 2, 3, 4, 5, 6, 7, 8, 9 A1 to A8 Data Inputs/Outputs 18, 17, 16, 15, 14, 13, 12, 11 B1 to B8 Data Inputs/Outputs 19 G Output Enable Input 10 GND Ground (0V) 20 VCC Positive Supply Voltage INPUTS FUNCTION OUTPUT G DIR A BUS B BUS L L OUTPUT INPUT A = B L H INPUT OUTPUT B = A H X ZZZ Symbol Parameter Value Unit VCC Supply Voltage -0.5 to +7.0 V VI DC Input Voltage (DIR, G) -0.5 to +7.0 V VI/O Bus I/O Voltage -0.5 to VCC + 0.5 V VO DC Output Voltage -0.5 to VCC + 0.5 V IIK DC Input Diode Current - 20 mA IOK DC Output Diode Current ± 20 mA IO DC Output Current ± 25 mA ICC or IGND DC VCC or Ground Current ± 75 mA Tstg Storage Temperature -65 to +150 °C TL Lead Temperature (10 sec) 300 °C Symbol Parameter Value Unit VCC Supply Voltage 2 to 5.5 V VI Input Voltage (DIR, G) 0 to 5.5 V VI/O Bus I/O Voltage 0 to VCC V VO Output Voltage 0 to VCC V Top Operating Temperature -55 to 125 °C dt/dv Input Rise and Fall Time (note 1) (VCC = 3.3 ± 0.3V) (VCC = 5.0 ± 0.5V) 0 to 100 0 to 20 ns/V |
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