CS1112 데이터 시트보기 (PDF) - ON Semiconductor

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CS1112

Quad Power Output Driver

ON Semiconductor 

CS1112

PACKAGE PIN DESCRIPTION (continued)

PACKAGE PIN #

24 Lead SOIC

15

PIN SYMBOL

OUT2

16

IN2

21

IN3

22

OUT3

23

STATUS

24

ROSC

FUNCTION

Open drain output three.

Parallel input three.

Parallel input four.

Open drain output four.

Open drain output, which is asserted when an open load or

overcurrent condition occurs at any of the outputs.

82 kΩ resistor tied to ground to set up accurate internal cur-

rent sources.

CIRCUIT DESCRIPTION

Typical Operation

Control of the CS1112 can be done using the Serial

Peripheral Interface (SPI) port using the Data Input

information in Table 1, or the outputs can be controlled via

the parallel inputs (IN0, IN1, IN2, IN3). IN0 controls OUT0,

IN1 controls OUT1, IN2 controls OUT2, and IN3 controls

OUT3. Turning the output drivers on is an OR function with

the SPI input and the parallel inputs.

Note: To prevent damage to the IC or the output load, VDD

must be above the Power on Reset threshold (3.5 V) before

IN0, IN1, IN2, or IN3 are asserted high (< 70% VDD).

TIMING DIAGRAM

CS

SCLK

SI

Don’t Care

OUT0

OUT1

OUT2

OUT3

Table 1. SPI Inputs

D7

D6

D5

X

X

X

MSB

X = Don’t Care; MSB is Transferred first.

Time

D4

D3

D2

D1

D0

X

OUT3

OUT2

OUT1

OUT0

LSB

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