TCA9535 Remote 16-Bit I2C and SMBus, Low-Power I/O Expander With Interrupt Output and Config Registers | TI.com

TCA9535 (ACTIVE)

Remote 16-Bit I2C and SMBus, Low-Power I/O Expander With Interrupt Output and Config Registers

Remote 16-Bit I2C and SMBus, Low-Power I/O Expander With Interrupt Output and Config Registers - TCA9535
 

Description

The TCA9535 is a 24-pin device that provides 16 bits of general purpose parallel input and output (I/O) expansion for the two-line bidirectional I2C bus or (SMBus) protocol. The device can operate with a power supply voltage ranging from 1.65 V to 5.5 V.

The TCA9535 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 TCA9535 is identical to the TCA9555, except that the TCA9535 does not include the internal I/O pull-up resistor, which requires pull-ups and pull-downs on unused I/O pins when configured as an input and undriven.

Features

  • I2C to Parallel Port Expander
  • Wide Power Supply Voltage Range of 1.65 V to 5 V
  • Low Standby-Current Consumption
  • Open-Drain Active-Low Interrupt Output
  • 5-V Tolerant I/O Ports
  • 400-kHz Fast I2C Bus
  • Polarity Inversion Register
  • Address by Three Hardware Address Pins for Use of up to Eight 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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Parametrics Compare all products in I2C General Purpose I/O (GPIO)

 
Voltage Nodes (V)
fSCLK (Max) (MHz)
VCC (Min) (V)
Frequency (Max) (kHz)
VCC (Max) (V)
I2C Address
Number of I/Os
Rating
Operating Temperature Range (C)
Package Group
Pin/Package
TCA9535
1.8
2.7
3.3
3.6
5    
0.4    
1.65    
400    
5.5    
0100 xxx    
16    
Catalog    
-40 to 85    
SSOP
TSSOP
VQFN
WQFN    
24SSOP
24TSSOP
24VQFN
24WQFN    
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