Description
The Texas Instruments PCA9555DW is a high-speed, low-power I/O expander designed for use in industrial control systems, automotive applications, and other environments requiring robust data transmission. It features a battery-backed real-time clock (RTC), programmable pull-up resistors, and overcurrent protection.
The device has 24 general-purpose I/O lines that can be used as inputs or outputs, with Schmitt trigger input circuits for noise immunity. The PCA9555DW also includes a high-speed serial interface for transmitting data at speeds up to 400 kHz.
This I/O expander is suitable for applications requiring reliable and efficient communication between devices, such as industrial control systems, automotive electronics, and medical equipment. Its low power consumption and robust design make it an attractive solution for many industries.
Package
The package type of PCA9555DW is SOIC (DW)-24.
Pinout
The PCA9555DW is a 24-pin SOIC I/O expander from Texas Instruments, designed for low-voltage operation. It features:
- High-speed parallel interface
- Low-voltage operation capability (1.8V to 3.6V)
- Interrupt generation on output change
- Schmitt trigger input and programmable pull-up resistor
The device is suitable for applications requiring real-time clock functionality, high-speed serial transmission, and data integrity verification.
Manufacturer
The manufacturer of the PCA9555DW is Texas Instruments (TI), a leading semiconductor company that designs, manufactures, and tests semiconductors and related technologies. TI is a global company with a wide range of products and solutions for various industries, including automotive, industrial, medical, and consumer electronics.
Specifications
| Number of I/Os |
16 |
Features |
Configuration registers, Interrupt pin |
| Supply voltage (min) (V) |
2.3 |
Supply voltage (max) (V) |
5.5 |
| Addresses |
8 |
Rating |
Catalog |
| Frequency (max) (MHz) |
0.4 |
Operating temperature range (°C) |
-40 to 85 |
| feature-number-of-i-os |
16 |
feature-number-of-addresses |
8 |
| feature-manual-reset |
No |
feature-interface-type |
I2C|SMBus |
| feature-interface-speed-khz |
100|400 |
feature-i2c-bus-interface-mode |
Fast Mode |
| feature-interrupt-output |
Yes |
feature-output-type |
Open Drain |
| feature-minimum-operating-supply-voltage-v |
2.3 |
feature-maximum-operating-supply-voltage-v |
5.5 |
| feature-maximum-sink-current-per-bit-ma |
25 |
feature-maximum-source-current-per-bit-ma |
-10 |
| feature-maximum-quiescent-current-ua |
1 |
feature-packaging |
Tube |
| feature-rad-hard |
|
feature-pin-count |
24 |
| feature-cecc-qualified |
No |
feature-esd-protection |
Yes |
| feature-military |
No |
feature-aec-qualified |
No |
| feature-aec-qualified-number |
|
feature-auto-motive |
No |
| feature-p-pap |
No |
feature-eccn-code |
EAR99 |
| feature-svhc |
No |
feature-svhc-exceeds-threshold |
No |
| Package/Case |
SOP24
|
Payment
Shipping & Packing
Warranty
