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PCA9554DW Datasheet(PDF) 11 Page - Texas Instruments

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Part # PCA9554DW
Description  SMBus I/O Expander With Interrupt Output
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

PCA9554DW Datasheet(HTML) 11 Page - Texas Instruments

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A
A
A
A
S
0
1
0
0
A1
A2
A0 1
Data 1
1
P
Data 2
Start
Condition
8 Bits
(One Data Bytes)
From Port
Data From Port
Slave Address
R/W
8
7
6
5
4
3
2
1
tir
tir
tsps
tiv
Address
Data 1
Data 2
INT
Data
Into
Port
B
B
A
A
Pn
INT
R/W
A
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
PCA9554
www.ti.com
SCPS128C – JULY 2006 – REVISED JUNE 2014
Parameter Measurement Information (continued)
A.
CL includes probe and jig capacitance.
B.
All inputs are supplied by generators having the following characteristics: PRR
≤ 10 MHz, ZO = 50 Ω, tr/tf ≤ 30 ns.
C.
All parameters and waveforms are not applicable to all devices.
Figure 15. Interrupt Load Circuit And Voltage Waveforms
Copyright © 2006–2014, Texas Instruments Incorporated
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