| Part Number | PCA9554A |
|---|---|
| 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. |
PCA9554A Datasheet
The PCA9554A is a 8-bit I2C and SMBus I/O port.
| Part Number | PCA9554A |
|---|---|
| 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. |