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Martian писал(а):Посмотреть D+ D- ?
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The usb D+/D- needs full bidirectional (analog) connectivity between host and device
* install pull ups on the 4052 board
* Use GND / OPEN on the microcontroller board to control the A/B lines. The same way as you do with mechanical switches.
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, где ключевое replacing , так как у меня плата готова, а функциональные схемы этих микросхем одинаковые, то полагаю, единственный вариант - заменить напрямую.Test board I made as per artwork in my previous post, worked perfectly fine with replacing CD4052 with 74HC4052.
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Пн сен 04, 2023 20:34:51
The MAX4617/MAX4618/MAX4619 are pin compatible
with the industry-standard 74HC4051/74HC4052/
74HC4053. In single-supply applications, they function identically and
have identical logic diagrams, although these parts differ electrically.
Guaranteed 1Ω On-Resistance
Low ON resistance: 80 Ω (typical) at VCC VEE = 4.5 V
Drain to Source ON Resistance - 470 Ω VDD = 5
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