8574TS Просмотр технического описания (PDF) - Philips Electronics

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8574TS

Remote 8-bit I/O expander for I2C-BUS

Philips Electronics 

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slave address (PCF8574A)

data to port

SDA S 0 1 1 1 A2 A1 A0 0 A

1

start condition

R/W acknowledge

P3

from slave

SCL

12 345 678

P3

OUTPUT

VOLTAGE

P3

PULL-UP

OUTPUT

CURRENT

A

I OHt

data to port

0

P3

AP

MBD971

I OH

Fig.15 Transient pull-up current IOHt while P3 changes from LOW-to-HIGH and back to LOW.

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