Packaging information
| Package | Pins X2QFN (DTO) | 24 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 3,000 | LARGE T&R |
Features for the TCAL6416R
- Operating power-supply voltage range of 1.08V to 3.6V
- Allows bidirectional voltage-level translation and GPIO expansion between 1.2V, 1.8V, 2.5V, and 3.3V I2C bus and p-ports
- Low standby current consumption of 1µA typical at 1.8V
- 1MHz fast mode plus I2C bus
- Hardware address pin allows two devices on the same I2C, SMBus bus
- Active-low reset input
(RESET)
- Sticky registers retain values when device is reset with RESET
- I2C functional state machine is reset
- Open-drain active-low interrupt output (INT)
- Input or output configuration register
- Polarity inversion register
- Configurable I/O drive strength register
- 10kΩ pull-up and pull-down resistor configuration register
- Internal power-on reset
- Software reset call support
- Noise filter on SCL or SDA inputs
- Latched outputs with high-current drive maximum capability for directly driving LEDs
- Latch-up performance exceeds 100mA per JESD 78, class II
- ESD protection exceeds JESD 22
- 4000V Human-body model (A114-A)
- 1000V Charged-device model (C101)
Description for the TCAL6416R
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.