The TCAL9539 device provides general purpose parallel input/output (I/O)
expansion for the two-line bidirectional I2C bus (or SMBus) protocol and
is designed for 1.08-V to 3.6-V VCC operation.
The device supports 100-kHz
(Standard-mode), 400-kHz (Fast-mode), and 1-MHz (fast-mode-plus) I2C
clock frequencies. I/O expanders such as the TCAL9539
provide a simple solution when additional I/Os are needed for switches, sensors,
push-buttons, LEDs, fans, and so on.
The TCAL9539 has Agile I/O ports which include additional features designed to
enhance the I/O performance in terms of speed, power consumption and EMI. The
additional features are: programmable output drive strength, programmable pull-up
and pull-down resistors, latchable inputs, maskable interrupt, interrupt status
register, and programmable open-drain or push-pull outputs.
The TCAL9539 device provides general purpose parallel input/output (I/O)
expansion for the two-line bidirectional I2C bus (or SMBus) protocol and
is designed for 1.08-V to 3.6-V VCC operation.
The device supports 100-kHz
(Standard-mode), 400-kHz (Fast-mode), and 1-MHz (fast-mode-plus) I2C
clock frequencies. I/O expanders such as the TCAL9539
provide a simple solution when additional I/Os are needed for switches, sensors,
push-buttons, LEDs, fans, and so on.
The TCAL9539 has Agile I/O ports which include additional features designed to
enhance the I/O performance in terms of speed, power consumption and EMI. The
additional features are: programmable output drive strength, programmable pull-up
and pull-down resistors, latchable inputs, maskable interrupt, interrupt status
register, and programmable open-drain or push-pull outputs.