TCA9534_16 Datasheet, PDF (13/38 Pages) Texas Instruments – Low Voltage 8-Bit I2C and SMBUS Low-Power I/O Expander with Interrupt Output and Configuration Registers

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TCA9534
SCPS197B – SEPTEMBER 2014 – REVISED NOVEMBER 2016
Parameter Measurement Information (continued)
DUT
Pn
CL = 50 pF
(see Note A)
500 Ÿ
500 Ÿ
2 x VCC
P-PORT LOAD CONFIGURATION
SCL
SDA
0.7 x VCC
P0
A
P3
0.3 x VCC
Slave
ACK
tpv
(see Note B)
Unstable Data
Last Stable Bit
WRITE MODE (R/W = 0)
SCL
Pn
P0
tps
A
tph
0.7 x VCC
P3
0.3 x VCC
0.7 x VCC
0.3 x VCC
READ MODE (R/W = 1)
A. C_L includes probe and jig capacitance.
B. t_pv is measured from 0.7 × V_CC on SCL to 50% I/O (Pn) output.
C. All inputs are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z_O = 50 Ω, t_r/t_f ≤ 30 ns.
D. The outputs are measured one at a time, with one transition per measurement.
E. All parameters and waveforms are not applicable to all devices.
Figure 21. P-Port Load Circuit and Voltage Waveforms
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