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PCA9539PWR - TI
Manufacturer:
TI
ManyChip's Part#:
MC23666631
Category:
Interface IC, Interface Controller
Package:
TSSOP-24
Datasheet:
Datasheet 3D Model
Description:
TEXAS INSTRUMENTS PCA9539PWR I/O Expander, 16Bit, 400kHz, I2C, SMBus, 2.3V, 5.5V, TSSOP
Stock Locations:
Availability:
221 pcs In Stock
MOQ:
1 pcs
Unit Price:
$ 0.81

Updated at 30/10/2025 10:30:15(UTC+8)

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Description

Description
This 16-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 the I2C interface [serial clock (SCL), serial data (SDA)].
The PCA9539 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. All registers can be read by the system master.
Features
• Low Standby-Current Consumption of 1 μA Max
• I2C to Parallel Port Expander
• Open-Drain Active-Low Interrupt Output
• Active-Low Reset Input
• 5-V Tolerant I/O Ports
• Compatible With Most Microcontrollers
• 400-kHz Fast I2C Bus
• Polarity Inversion Register
• Address by Two Hardware Address Pins for Use of up to Four Devices
• Latched Outputs With High-Current Drive Capability for Directly Driving LEDs
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 1000-V Charged-Device Model (C101)

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PCA9539PWR Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Surface Mount
Number of Pins	24 Pin
Case/Package	TSSOP-24
Supply Voltage (DC)	2.30V ~ 5.50V
Number of Outputs	16 Output
Clock Speed	400 kHz
Voltage Nodes	2.70 V, 3.30 V, 3.60 V, 5.00 V
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	2.3V ~ 5.5V
Supply Voltage (Max)	5.5 V
Supply Voltage (Min)	2.3 V
	Show
Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Not Recommended for New Designs
Packaging	Tape & Reel (TR)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance Edition	2015/06/15

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