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See Technical Specifications

TCA9535DBR

16-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt & config registers

Manufacturer:

TI
Mfr.Part #:

TCA9535DBR
Datasheet:

TCA9535DBR Datasheet (PDF)
Number of I/Os:

16
Features:

Configuration registers, Interrupt pin
Supply voltage (min) (V):

1.65
Supply voltage (max) (V):

5.5
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TCA9535DBR General 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 controller 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.

Key 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)

Specifications

Number of I/Os	16	Features	Configuration registers, Interrupt pin
Supply voltage (min) (V)	1.65	Supply voltage (max) (V)	5.5
Addresses	8	Rating	Catalog
Frequency (max) (MHz)	0.4	Operating temperature range (°C)	-40 to 85