PCA9554ADGVR
Obsolete8-BIT 2.3- TO 5.5-V I2C/SMBUS I/O EXPANDER WITH INTERRUPT, WEAK PULL-UP & CONFIG REGISTERS
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PCA9554ADGVR
Obsolete8-BIT 2.3- TO 5.5-V I2C/SMBUS I/O EXPANDER WITH INTERRUPT, WEAK PULL-UP & CONFIG REGISTERS
Technical Specifications
Parameters and characteristics for this part
| Specification | PCA9554ADGVR |
|---|---|
| Clock Frequency | 400 kHz |
| Current - Output Source/Sink [custom] | 10 mA |
| Current - Output Source/Sink [custom] | 25 mA |
| Features | POR |
| Interface | I2C, SMBus |
| Interrupt Output | True |
| Mounting Type | Surface Mount |
| Number of I/O | 8 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Type | Push-Pull |
| Package / Case | 16-TFSOP |
| Package / Case [x] | 0.173 in |
| Package / Case [y] | 4.4 mm |
| Supplier Device Package | 16-TVSOP |
| Voltage - Supply [Max] | 5.5 V |
| Voltage - Supply [Min] | 2.3 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Texas Instruments | LARGE T&R | 1 | $ 1.42 | |
| 100 | $ 1.17 | |||
| 250 | $ 0.84 | |||
| 1000 | $ 0.63 | |||
Description
General part information
PCA9554A Series
The PCA9554A open-drain interrupt (INT) output is activated when any input state differs from its corresponding Input Port register state and is used to indicate to the system master that an input state has changed.
INTcan be connected to the interrupt input of a microcontroller. By sending an interrupt signal on this line, the remote I/O can inform the microcontroller if there is incoming data on its ports without having to communicate via the I2C bus. Thus, the PCA9554A can remain a simple slave device.
The device’s outputs (latched) have high-current drive capability for directly driving LEDs and low current consumption.
Documents
Technical documentation and resources
