TCA6416 Datasheet, PDF (1/31 Pages) Texas Instruments – LOW-VOLTAGE 16-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS

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TCA6416
LOW-VOLTAGE 16-BIT I²C AND SMBus I/O EXPANDER
WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS
SCPS153 – DECEMBER 2007
FEATURES
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• Operating Power-Supply Voltage Range of
1.65 V to 5.5 V
• Allows Bidirectional Voltage-Level Translation
and GPIO Expansion Between:
– 1.8-V SCL/SDA and
1.8-V, 2.5-V, 3.3-V, or 5-V P Port
– 2.5-V SCL/SDA and
1.8-V, 2.5-V, 3.3-V, or 5-V P Port
– 3.3-V SCL/SDA and
1.8-V, 2.5-V, 3.3-V, or 5-V P Port
– 5-V SCL/SDA and
1.8-V, 2.5-V, 3.3-V, or 5-V P Port
• I²C to Parallel Port Expander
• Low Standby Current Consumption of 1 µA
• Schmitt-Trigger Action Allows Slow Input
Transition and Better Switching Noise
Immunity at the SCL and SDA Inputs
– V_hys = 0.18 V Typ at 1.8 V
– V_hys = 0.25 V Typ at 2.5 V
– V_hys = 0.33 V Typ at 3.3 V
– V_hys = 0.5 V Typ at 5 V
• 5-V Tolerant I/O Ports
• Active-Low Reset Input (RESET)
• Open-Drain Active-Low Interrupt Output (INT)
• 400-kHz Fast I²C Bus
• Input/Output Configuration Register
• Polarity Inversion Register
• Internal Power-On Reset
• Power Up With All Channels Configured as
Inputs
• No Glitch On Power Up
• Noise Filter on SCL/SDA Inputs
• Latched Outputs With High-Current Drive
Maximum 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)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
PW PACKAGE
(TOP VIEW)
RTW PACKAGE
(TOP VIEW)
INT ¹
V_CCI ²
RESET ³
P00 ⁴
P01 ⁵
P02 6
P03 7
P04 8
P05 9
P06 10
P07 11
GND 12
24 V_CCP
23 _SDA
22 SCL
21 ADDR
20 P17
19 P16
18 P15
17 P14
16 P13
15 P12
14 P11
13 P10
P00
P01
P02
P03
P04
P05
24 23 22 21 20 19
1
18
2
17
3
16
4
15
5
14
6
13
7 8 9 10 11 12
ADDR
P17
P16
P15
P14
P13
ZQS PACKAGE
(TOP VIEW)
E
D
C
B
A
54321
DESCRIPTION/ORDERING INFORMATION
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 V_CC range. 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.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCT PREVIEW information concerns products in the
formative or design phase of development. Characteristic data and
other specifications are design goals. Texas Instruments reserves
the right to change or discontinue these products without notice.
Copyright © 2007, Texas Instruments Incorporated