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HCF4054B Folha de dados(PDF) 2 Page - STMicroelectronics |
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HCF4054B Folha de dados(HTML) 2 Page - STMicroelectronics |
2 / 11 page HCF4054B 2/11 IINPUT EQUIVALENT CIRCUIT PIN DESCRIPTION TRUTH TABLE X = Don’t Care. (*) Depends upon the input mode previously applied when ST=1. PIN No SYMBOL NAME AND FUNCTION 6, 5, 4, 3 OUT1 to OUT4 Outputs 9, 11, 13, 15 IN1 to IN4 Inputs 10, 12, 14, 1 STROBE1 STROBE4 Strobe Input 2 DISPLAY FREQ. IN Display Frequency Input 7 VEE Negative Supply Voltage 8 VSS Negative Supply Voltage 16 VDD Positive Supply Voltage DF IN STROBE OUT LL H L HLH H LH H H HHH L XX L * can be converted to output signal swings (VDD to VEE) of +5V to -5V. The level shifted function permits the use of different input and output signal swings. The input swings from a low level of VSS to a high level of VDD, while the outputs swings from a low level of VEE to the same high level of VDD . Thus, the input and output swings can be selected independently of each other over a 3 to 18V range. VSS may be connected to VEE when no level-shift function is required. Data is transferred from input to output by placing a high voltage level at the strobe input. A low voltage level at the strobe input latches the data input and the corresponding output segments remain selected (or non selected) while the strobe is low. |
Nº de peça semelhante - HCF4054B_02 |
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Descrição semelhante - HCF4054B_02 |
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