TCA7408 Datasheet, PDF (17/25 Pages) Texas Instruments – Low-Voltage 8-Bit I2C and SMBus I/O Expander with Interrupt Output, RESET, I/ODirection Registers, and Programmable Pull-up/Pull-down

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TCA7408
SCPS235 – NOVEMBER 2011
PARAMETER MEASUREMENT INFORMATION (continued)
NOTE: C_L includes probe and jig capacitance. tpv is measured from 0.7 × V_CC on SCL to 50% I/O (Pn) output. All inputs are
supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z_O = 50 Ω, t_r/t_f ≤ 30 ns. The outputs are
measured one at a time, with one transition per measurement. All parameters and waveforms are not applicable to all
devices.
Figure 10. GPIO-port Load Circuit and Timing Waveforms
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