TCA9554_15 Datasheet, PDF (11/38 Pages) Texas Instruments – TCA9554 Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Configuration Registers

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TCA9554
SCPS233D – MARCH 2012 – REVISED AUGUST 2015
Parameter Measurement Information (continued)
VCC
R_L = 4.7 l3
INT
DUT
C_L = 100 pF
(see Note A)
Interrupt Load configuration
0.7 x V_CC
SCL
R/W
A
INT
0.3 x V_CC
t_iv
t_ir
Data into
Port (Pn)
INT
0.7 x V_CC
0.3 x V_CC
A. C_L includes probe and jig capacitance.
B. All inputs are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z_O = 50 Ω, t_r/t_f ≤ 30 ns.
C. All parameters and waveforms are not applicable to all devices.
Figure 11. Interrupt Load Circuit And Voltage Waveforms
0.7 x V_CC
0.3 x V_CC
0.7 x V_CC
0.3 x V_CC
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