Specification	TCA6416RTWR

Clock Frequency	400 kHz
Current - Output Source/Sink [custom]	10 mA
Current - Output Source/Sink [custom]	25 mA
Features	POR
Interface	I2C, SMBus
Interrupt Output	True
Mounting Type	Surface Mount
Number of I/O	16
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Type	Push-Pull
Package / Case	24-WFQFN Exposed Pad
Supplier Device Package	24-WQFN (4x4)
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	1.65 V

TCA6416A Series

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

Part	Interface	Current - Output Source/Sink [custom]	Current - Output Source/Sink [custom]	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply [Max]	Voltage - Supply [Min]	Package / Case	Package / Case	Supplier Device Package	Number of I/O	Clock Frequency	Mounting Type	Output Type	Features
Texas Instruments TCA6416PWR	I2C SMBus	10 mA	25 mA	85 °C	-40 °C	5.5 V	1.65 V	24-TSSOP	0.173 in 4.4 mm	24-TSSOP	16	400 kHz	Surface Mount	Push-Pull	POR
Texas Instruments TCA6416APWR	I2C SMBus	10 mA	25 mA	85 °C	-40 °C	5.5 V	1.65 V	24-TSSOP	0.173 in 4.4 mm	24-TSSOP	16	400 kHz	Surface Mount	Push-Pull	POR
Texas Instruments TCA6416ARTWR	I2C SMBus	10 mA	25 mA	85 °C	-40 °C	5.5 V	1.65 V	24-WFQFN Exposed Pad		24-WQFN (4x4)	16	400 kHz	Surface Mount	Push-Pull	POR
Texas Instruments TCA6416PWT	I2C SMBus	10 mA	25 mA	85 °C	-40 °C	5.5 V	1.65 V	24-TSSOP	0.173 in 4.4 mm	24-TSSOP	16	400 kHz	Surface Mount	Push-Pull	POR
Texas Instruments TCA6416RTWR	I2C SMBus	10 mA	25 mA	85 °C	-40 °C	5.5 V	1.65 V	24-WFQFN Exposed Pad		24-WQFN (4x4)	16	400 kHz	Surface Mount	Push-Pull	POR
Texas Instruments TCA6416PW	I2C	10 mA	25 mA	85 °C	-40 °C	5.5 V	1.65 V	24-TSSOP	0.173 in 4.4 mm	24-TSSOP	16	400 kHz	Surface Mount	Push-Pull	POR
Texas Instruments TCA6416RTWT	I2C SMBus	10 mA	25 mA	85 °C	-40 °C	5.5 V	1.65 V	24-WFQFN Exposed Pad		24-WQFN (4x4)	16	400 kHz	Surface Mount	Push-Pull	POR

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tape & Reel (TR)	3000	$ 1.58
		6000	$ 1.52
Texas Instruments	LARGE T&R	1	$ 2.73
		100	$ 2.39
		250	$ 1.67
		1000	$ 1.35

Description

General part information

TCA6416A Series

This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed to provide general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL) and serial data (SDA)].

The major benefit of this device is its wide VCCrange. It can operate from 1.65 V to 5.5 V on the P-port side and on the SDA/SCL side. This allows the TCA6416 to interface with next-generation microprocessors and microcontrollers on the SDA/SCL side, where supply levels are dropping down to conserve power. In contrast to the dropping power supplies of microprocessors and microcontrollers, some PCB components, such as LEDs, remain at a 5-V power supply.

The bidirectional voltage level translation in the TCA6416 is provided through VCCI. VCCIshould be connected to the VCCof the external SCL/SDA lines. This indicates the VCClevel of the I2C bus to the TCA6416. The voltage level on the P-port of the TCA6416 is determined by the VCCP.

Documents

Technical documentation and resources

TCA6416 Low-Voltage 16-Bit I2C and SMBus I/O Expander datasheet (Rev. B)

Data sheet