PCA9554APWR datasheet(19/33 Pages) TI

Part #	PCA9554APWR

Description	REMOTE 8-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS

PDF	33 Pages

Scroll/Zoom	100%

Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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A0 1

Data 1

Data 2

Start

Condition

8 Bits

(One Data Bytes)

From Port

Data From Port

Slave Address

R/W

tir

tsps

tiv

Address

Data 1

Data 2

INT

Data

Into

Port

INT

R/W

tir

0.7

× VCC

0.3

× VCC

0.7

× VCC

0.3

× VCC

0.7

× VCC

0.3

× VCC

0.7

× VCC

0.3

× VCC

INT

SCL

View B−B

View A−A

tiv

RL = 4.7 kΩ

VCC

CL = 100 pF

(see Note A)

INTERRUPT LOAD CONFIGURATION

DUT

INT

ACK

From Slave

ACK

From Slave

1.5 V

PCA9554A

REMOTE 8-BIT I2C AND SMBus I/O EXPANDER

WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS

SCPS127A – SEPTEMBER 2006 – REVISED FEBRUARY 2007

PARAMETER MEASUREMENT INFORMATION (continued)

CL includes probe and jig capacitance.

All inputs are supplied by generators having the following characteristics: PRR

≤ 10 MHz, Z

O = 50 Ω, tr/tf ≤ 30 ns.

All parameters and waveforms are not applicable to all devices.

Figure 11. Interrupt Load Circuit and Voltage Waveforms

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PCA9554APWR Datasheet(PDF) 19 Page - Texas Instruments

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