MxL82423
Overview
| Information | 16-Bit SPI GPIO Expander with Reset Input |
|---|---|
| CPU Interface | SPI |
| No. of GPIOs | 16 |
| Interrupt Output Pin | Yes |
| Reset Input Pin | ✔ |
| Integrated Level Shifters | |
| Internal Pull-Up Resistors Enabled at Power-up | |
| 5V Tolerant Inputs | ✔ |
| Supply Voltage Range VCC (V) | 1.62V to 5.5V |
| Max UART/GPIO Input Voltage (V) | 5.5 |
| Max UART/GPIO Output Voltage (V) | VCC |
| Temperature Range (°C) | -40 to 85 |
| Package | QFN-24, TSSOP-24 |
The MxL82403 and MxL82423 are 16-bit GPIO expander with an SPI interface. After power-up, the MxL82403 and MxL82423 have internal 100K ohm pull-up resistors on each I/O pin that can be individually enabled.
In addition, the GPIOs on the MxL82403 and MxL82423 can individually be controlled and configured. As outputs, the GPIOs can be outputs that are high, low or in three-state mode. The three-state mode feature is useful for applications where the power is removed from the remote devices, but they may still be connected to the GPIO expander.
As inputs, the internal pull-up resistors can be enabled or disabled and the input polarity can be inverted. The interrupt behavior is configurable. It can be set to trigger on a rising edge, falling edge, or both edges. The interrupt
condition is cleared either when the input returns to its original state or when the current input state is read.
By default, the MxL82403 has the IRQ enabled while the MxL82423 has the IRQ disabled.
The MxL82403 is available in 24-pin TSSOP package, while the MxL82423 is available 24-pin QFN package.
1.62V to 5.5V operating voltage
16 General Purpose I/Os (GPIOs)
5V tolerant inputs
Maximum stand-by current of 1uA at +1.8V
SPI bus interface
SPI Clock Frequency up to 26MHz
Individually programmable inputs
Internal pull-up resistors
Polarity inversion
Individual interrupt enable
Rising edge and/or Falling edge interrupt
Input filter
Individually programmable outputs
Output Level Control
Output Three-State Control
Open-drain active low interrupt output
Active-low reset input
3kV HBM ESD protection per JESD22-A114F
200mA latch-up performance per JESD78B
- Personal Digital Assistants (PDA)
- Cellular Phones/Data Devices
- Battery-Operated Devices
- Global Positioning System (GPS)
- Bluetooth
Documentation & Design Tools
| Type | Title | Version | Date | File Size |
|---|---|---|---|---|
| Product Brochures | Serial Transceivers & Bridges Brochure | R03 | May 2025 | 3.6 MB |
Parts & Purchasing
| Part Number | Min Temp | Max Temp | Status |
|---|---|---|---|
| MxL82423I-AQB-R | -40 | 85 | PRE |
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
