text.skipToContent text.skipToNavigation

Référence fabricant


PCA9502 Series 8-Bit I/O Expander w/ I2C-bus/SPI Interface - HVQFN-24

Modèle ECAD:
Nom du fabricant: NXP
Emballage standard:
Product Variant Information section
Code de date:
Product Specification Section
NXP PCA9502BS,128 - Caractéristiques techniques
Attributes Table
Interface Circuit Type: I2C / SPI
No of Channels: 1
Clock Frequency-Max: 400kHz
No of I/O Lines: 8
Supply Voltage-Nom: 2.3V to 3.6V
Supply Current: ±10mA
Style d'emballage :  HVQFN-24
Méthode de montage : Surface Mount
$Fonctionnalités et applications
The PCA9501 is an 8-bit I/O expander with an on-board 2-kbit EEPROM.

The I/O expandable eight quasi-bidirectional data pins can be independently assigned as inputs or outputs to monitor board level status or activate indicator devices such as LEDs. The system master writes to the I/O configuration bits in the same way as for the PCF8574. The data for each input or output is kept in the corresponding input or output register. The system master can read all registers.


  • 8 general purpose input/output expander/collector
  • Replacement for PCF8574 with integrated 2-kbit EEPROM
  • Internal 256 ´ 8 EEPROM
  • Self timed write cycle (5 ms typical)
  • 16 byte page write operation
  • I2C-bus and SMBus interface logic
  • Internal power-on reset
  • Noise filter on SCL/SDA inputs
  • Active LOW interrupt output


  • Board version tracking and configuration
  • Board health monitoring and status reporting
  • Multi-card systems in telecom, networking, and base station infrastructure equipment
  • Field recall and troubleshooting functions for installed boards
  • General-purpose integrated I/O with memory
  • Replacement for PCF8574 with integrated 2-kbit EEPROM
  • Bus master sees GPIO and EEPROM as two separate devices

View the PCA9501PW,118 family of I2C

Pricing Section
Stock globale:
d’Allemagne (En ligne seulement):
Sur commande :
Stock d'usine :Stock d'usine :
Commande minimale :
Multiples de :
2 895,00 $
Prix Internet
1 500
3 000
4 500
6 000+
Product Variant Information section