TCAL6416R Series

16-bit translating I²C-bus/SMBus I/O expander with interrupt, reset, sticky registers, and agile

Catalog

16-bit translating I²C-bus/SMBus I/O expander with interrupt, reset, sticky registers, and agile

Part	Features	Supplier Device Package	Mounting Type	Interface	Current - Output Source/Sink [custom]	Current - Output Source/Sink [custom]	Output Type	Package / Case	Voltage - Supply [Min]	Voltage - Supply [Max]	Number of I/O	Interrupt Output	Operating Temperature [Max]	Operating Temperature [Min]
Texas Instruments TCAL6416RDTOR	POR	24-X2QFN (2x2)	Surface Mount	I2C SMBus	10 mA	25 mA	Open Drain Push-Pull	24-QFN 24-XFLGA	1.08 V	3.6 V	16		125 °C	-40 °C

Catalog

16-bit translating I²C-bus/SMBus I/O expander with interrupt, reset, sticky registers, and agile

Key Features

• Operating power-supply voltage range of 1.08V to 3.6VAllows bidirectional voltage-level translation and GPIO expansion between 1.2V, 1.8V, 2.5V, and 3.3V I2C bus and p-portsLow standby current consumption of 1µA typical at 1.8V1MHz fast mode plus I2C busHardware address pin allows two devices on the same I2C, SMBus busActive-low reset input (RESET)Sticky registers retain values when device is reset with RESETI2C functional state machine is resetOpen-drain active-low interrupt output (INT)Input or output configuration registerPolarity inversion registerConfigurable I/O drive strength register10kΩ pull-up and pull-down resistor configuration registerInternal power-on resetSoftware reset call supportNoise filter on SCL or SDA inputsLatched outputs with high-current drive maximum capability for directly driving LEDsLatch-up performance exceeds 100mA per JESD 78, class IIESD protection exceeds JESD 224000V Human-body model (A114-A)1000V Charged-device model (C101)Operating power-supply voltage range of 1.08V to 3.6VAllows bidirectional voltage-level translation and GPIO expansion between 1.2V, 1.8V, 2.5V, and 3.3V I2C bus and p-portsLow standby current consumption of 1µA typical at 1.8V1MHz fast mode plus I2C busHardware address pin allows two devices on the same I2C, SMBus busActive-low reset input (RESET)Sticky registers retain values when device is reset with RESETI2C functional state machine is resetOpen-drain active-low interrupt output (INT)Input or output configuration registerPolarity inversion registerConfigurable I/O drive strength register10kΩ pull-up and pull-down resistor configuration registerInternal power-on resetSoftware reset call supportNoise filter on SCL or SDA inputsLatched outputs with high-current drive maximum capability for directly driving LEDsLatch-up performance exceeds 100mA per JESD 78, class IIESD protection exceeds JESD 224000V Human-body model (A114-A)1000V Charged-device model (C101)

Description

The TCAL6416R provides general purpose parallel input and output (I/O) expansion for the two-line bidirectional I2C bus (or SMBus) protocol. The device operates with a power supply voltage ranging from 1.08V to 3.6V on the I2C bus side (VCCI), and a power supply voltage ranging from 1.08V to 3.6V on the P-port side (VCCP). The device supports 100kHz (standard-mode), 400kHz (fast-mode), and 1MHz (fast-mode-plus) I2C clock frequencies. I/O expanders, such as the TCAL6416R, provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and so on. The TCAL6416R 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 RESET pin only resets the I2C state machine when stuck to regain access to the I2C. I/O pins and sticky registers retain the last configured state while the I2C is being re-initialized. The TCAL6416R provides general purpose parallel input and output (I/O) expansion for the two-line bidirectional I2C bus (or SMBus) protocol. The device operates with a power supply voltage ranging from 1.08V to 3.6V on the I2C bus side (VCCI), and a power supply voltage ranging from 1.08V to 3.6V on the P-port side (VCCP). The device supports 100kHz (standard-mode), 400kHz (fast-mode), and 1MHz (fast-mode-plus) I2C clock frequencies. I/O expanders, such as the TCAL6416R, provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and so on. The TCAL6416R 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 RESET pin only resets the I2C state machine when stuck to regain access to the I2C. I/O pins and sticky registers retain the last configured state while the I2C is being re-initialized.