| Part Number | PCA9554 |
|---|---|
| Manufacturer | onsemi |
| Overview |
The PCA9554 is a CMOS device that provides 8−bit parallel input/output port expansion for I2C and SMBus compatible applications. This I/O expander provides a simple solution in applications where addi.
an active low interrupt output which indicates to the system master that an input state has changed.
The device’s extended addressing capability allows up to 8 devices to share the same bus.
Features
* 400 kHz I2C Bus Compatible (Note 1) * 2.3 V to 5.5 V Operation * Low Standby Current * 5 V Toleran. |
PCA9554 Datasheet
The PCA9554 is a 8-bit I2C and SMBus I/O Port.
| Part Number | PCA9554 |
|---|---|
| Description | 8-bit I2C and SMBus I/O port |
| Manufacturer | NXP Semiconductors |
| Overview |
The PCA9554 and PCA9554A are 16-pin CMOS devices that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and were developed to enhance the NXP Semi.
and benefits
* Operating power supply voltage range of 2.3 V to 5.5 V * 5 V tolerant I/Os * Polarity Inversion register * Active LOW interrupt output * Low standby current * Noise filter on SCL/SDA inputs * No glitch on power-up * Internal power-on reset * 8 I/O pins which default to 8 inputs * 0 Hz. |
| Part Number | PCA9554 |
|---|---|
| Description | Remote 8-Bit I2C AND SMBus I/O Expander |
| Manufacturer | Texas Instruments |
| Overview |
This 8-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.3-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via th.
*1 I2C to Parallel Port Expander * Open-Drain Active-Low Interrupt Output * Operating Power-Supply Voltage Range of 2.3 V to 5.5 V * 5-V Tolerant I/Os * 400-kHz Fast I2C Bus * Three Hardware Address Pins Allow up to Eight Devices on the I2C/SMBus * Input/Output Configuration Register * Polarity Inve. |