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TCA9554A Datasheet(PDF) 11 Page - Texas Instruments

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Part # TCA9554A
Description  TCA9554A Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Configuration Registers
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TCA9554A Datasheet(HTML) 11 Page - Texas Instruments

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DUT
INT
CL = 100 pF
(see Note A)
RL = 4.7 lQ
VCC
Interrupt Load configuration
INT
0.7 x VCC
0.3 x VCC
Data into
Port (Pn)
tiv
0.7 x VCC
0.3 x VCC
INT
A
R/W
tir
0.7 x VCC
0.3 x VCC
0.7 x VCC
0.3 x VCC
SCL
TCA9554A
www.ti.com
SCPS196D – DECEMBER 2010 – REVISED AUGUST 2015
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 11. Interrupt Load Circuit And Voltage Waveforms
Copyright © 2010–2015, Texas Instruments Incorporated
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