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TEXAS INSTRUMENTS  PCA9555DWR  I/O Expander, 16bit, 400 kHz, I2C, SMBus, 2.3 V, 5.5 V, SOIC

TEXAS INSTRUMENTS PCA9555DWR
Technical Data Sheet (1.27MB) EN Technical Data Sheet (1.26MB) EN See all Technical Docs

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Product Overview

The PCA9555DWR is a 16-bit I/O Expander for the two-line bidirectional bus (I²C) is designed for 2.3 to 5.5V VCC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I²C interface [serial clock (SCL), serial data (SDA)]. The PCA9555 consists of two 8-bit configuration (input or output selection), input port, output port and polarity inversion (active high or active low operation) registers. At power on, the I/Os are configured as inputs. The system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding Input or Output register. The polarity of the input port register can be inverted with the Polarity Inversion register. The device outputs (latched) have high-current drive capability for directly driving LEDs. All registers can be read by the system master.
  • Open-drain active-low interrupt (INT)\ output
  • Compatible with most microcontrollers
  • 400kHz Fast I²C bus
  • Address by 3 hardware address pins for use of up to 8 devices
  • Polarity inversion register
  • Latched outputs with high-current drive capability for directly driving LEDs
  • 1µA Maximum low standby-current consumption
  • Green product and no Sb/Br
Device has limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

 

Product Information

Chip Configuration:
16bit
Bus Frequency:
400kHz
IC Interface Type:
I2C, SMBus
Supply Voltage Min:
2.3V
Supply Voltage Max:
5.5V
Interface Case Style:
SOIC
No. of Pins:
24Pins
No. of I/O's:
16I/O's
Packaging:
Each
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (15-Jun-2015)

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Applications

  • Communications & Networking

Legislation and Environmental

Moisture Sensitivity Level:
MSL 1 - Unlimited
Country of Origin:
Taiwan

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85437090
Weight (kg):
.002

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