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HCF40147B датащи(PDF) 1 Page - STMicroelectronics |
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HCF40147B датащи(HTML) 1 Page - STMicroelectronics |
1 / 12 page HCC40147B HCF40147B April 1991 10 TO 4 LINE BCD PRIORITY ENCODER EY (Plastic Package) DESCRIPTION ORDER CODES : HCC40147BF HCF40147BM1 HCF40147BEY HCF40147BC1 F (Ceramic Package) M1 (Micro Package) C1 (Chip Carrier) PIN CONNECTIONS . ENCODES 10 LINE TO 4 LINE BCD . ACTIVE LOW INPUTS AND OUTPUTS . STANDARDIZED, SYMMETRICAL OUTPUT CHARACTERIZATION . 100 % TESTED FOR QUIESCENT CURRENT AT 20 V . 5V, 10V AND 15V PARAMETRIC RATINGS . MAXIMUM INPUT CURREENT OF 1 µA AT 18V OVER FULL PACKAGE TEMPERATURE RANGE; 100 nA AT 18 V AND 25 oC . NOISE MARGIN (FULL PACKAGE TEMPERA- TURE RANGE): 1V AT VDD = 5V, 2V AT VDD = 10V, 2.5V AT VDD = 15V APPLICATIONS: . KEYBOARD ENCODING . 10 LINE TO BCD ENCODING . RANGE SELECTION The HCC/HCF40147B CMOS encoder features priority encoding of the inputs to ensure that only the highest order data line is encoded. Ten data input lines (0-9) are encoded to four line (8, 4, 2, 1) BCD. The highest priority line is line 9. All four output lines are logic 1 (VSS) when all input lines are logic 0. All inputs and outputs are buffered, and each output can drive one TTL Low Power Schottky load. The HCC/HCFF40147 is functionally similar to the T54/T74LS147 if pin 15 is tied low. The HCC/HCF40147B types are supplied in 16 lead plastic or ceramic and plastic micropackage. 1/12 |
Аналогичный номер детали - HCF40147B |
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Аналогичное описание - HCF40147B |
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