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| TCA6424 Datasheet, PDF (22/29 Pages) Texas Instruments – LOW-VOLTAGE 24-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS | |||
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TCA6424
LOW-VOLTAGE 24-BIT I2C AND SMBus I/O EXPANDER
WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS
SCPS175 â NOVEMBER 2007
PARAMETER MEASUREMENT INFORMATION (continued)
VCCI
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SDA
DUT
RL = 1 kW
CL = 50 pF
(see Note A)
DUT
Pn
CL = 50 pF
(see Note A)
500 W
500 W
2 ´ VCCP
SDA LOAD CONFIGURATION
P PORT LOAD CONFIGURATION
SCL
Start
ACK or Read Cycle
SDA
RESET
tREC
tRESET
0.3 ´ VCCI
VCCP/2
tREC
tW
Pn
VCCP/2
tRESET
A. CL includes probe and jig capacitance.
B. All inputs are supplied by generators having the following characteristics: PRR ⤠10 MHz, ZO = 50 â¦, tr/tf ⤠30 ns.
C. The outputs are measured one at a time, with one transition per measurement.
D. I/Os are configured as inputs.
E. All parameters and waveforms are not applicable to all devices.
Figure 13. Reset Load Circuits and Voltage Waveforms
22
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Copyright © 2007, Texas Instruments Incorporated
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