TCA6416A
I/O ExpanderThe TCA6416A is a i/o expander from Texas Instruments. View the full TCA6416A datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
Manufacturer
Texas Instruments
Category
I/O Expander
Key Specifications
| Parameter | Value |
|---|---|
| Packaging | MouseReel |
| Standard Pack Qty | 3000 |
Overview
Part: TCA6416A — Texas Instruments
Type: 16-bit I2C and SMBus I/O Expander
Description: A 24-pin, 1.65–5.5 V operating voltage, 16-bit I/O expander for I2C/SMBus protocols, offering bidirectional level translation, interrupt output, and reset input.
Operating Conditions:
- Supply voltage (VCCI, VCCP): 1.65–5.5 V (for -40 °C ≤ TA ≤ 85 °C), 1.65–3.6 V (for 85 °C < TA ≤ 125 °C)
- Operating temperature: -40 to 125 °C (for 1.65 V ≤ VCC ≤ 3.6 V), -40 to 85 °C (for 3.6 V < VCC ≤ 5.5 V)
- I2C bus clock frequency: 100 kHz (Standard mode), 400 kHz (Fast mode)
Absolute Maximum Ratings:
- Max supply voltage (VCCI, VCCP): 6.5 V
- Max continuous output low current (P port): 50 mA
- Max continuous output low current (SDA, INT): 25 mA
- Max junction temperature (TJ): 130 °C (VCC ≤ 3.6 V), 90 °C (3.6 V < VCC ≤ 5.5 V)
- Storage temperature: -65 to 150 °C
Key Specs:
- Low standby current: 3 μA
- I/O port voltage tolerance: 5V
- SDA/INT low-level output current (IOL): 3 mA (min, V_OL = 0.4 V)
- P-port high-level output current (IOH): 10 mA (max)
- P-port low-level output current (IOL): 25 mA (max, TJ ≤ 65 °C)
- ESD Human-body model (HBM): ±2000 V
- ESD Charged-device model (CDM): ±1000 V
Features:
- I2C to parallel port expander
- 1.65V to 5.5V operating supply voltage range
- Supports bidirectional level translation and GPIO expansion between 1.8V, 2.5V, 3.3V, and 5V I2C bus and P-ports
- 3 μA low standby current
- 5V tolerant I/O ports
- 400kHz Fast I2C bus
- Hardware address pin, allowing two TCA6416A devices on the same I2C/SMBus bus
- Active-low reset input (RESET)
- Open-drain active-low interrupt output (INT)
- Input/output configuration register
- Polarity inversion register
- Internal power-on reset
- All channels configured as inputs at power-on
- No glitch at power-on
- Noise filter on SCL/SDA inputs
- Latched outputs with maximum high current drive capability for direct LED driving
Applications:
- Servers
- Routers (telecom switching equipment)
- Personal computers
- Personal electronics (e.g., game consoles)
- Industrial automation
- Products with GPIO-limited processors
Package:
- TSSOP (24) - 7.80mm × 4.40mm
- WQFN (24) - 4.00mm x 4.00mm
- BGA Microstar Junior (24) - 3.00mm x 3.00mm
Pin Configuration
PW Package 24-Pin TSSOP Top View
The exposed center pad, if used, must be connected only as a secondary GND or must be left electrically open.
表 5-1. ZQS Package Pin Assignments
| E | P13 | P11 | P10 | GND | P06 |
|---|---|---|---|---|---|
| D | P15 | P14 | P12 | P07 | P05 |
| C | P16 | P17 | P01 | P04 | P03 |
| B | ADDR | VCCP | VCCI | NB (1) | P02 |
| A | SCL | SDA | INT | RESET | P00 |
| 5 | 4 | 3 | 2 | 1 |
- (1) NB -No ball at this position
表 5-1. ZQS Package Pin Assignments
ZQS Package 24-Pin BGA Microstar Junior Top View
Electrical Characteristics
over recommended operating free-air temperature range, VCCI = 1.65 V to 5.5 V (unless otherwise noted)
| PARAMETER | PARAMETER | TEST CONDITIONS | TEST CONDITIONS | V CCP | MIN | TYP (1) | MAX | UNIT |
|---|---|---|---|---|---|---|---|---|
| V IK | Input diode clamp voltage | I I = - 18 mA | I I = - 18 mA | 1.65 V to 5.5 V | - 1.2 | V | ||
| V POR | Power-on reset voltage | V I = V CCP or GND, I O = 0 | V I = V CCP or GND, I O = 0 | 1.65 V to 5.5 V 1.65 V 2.3 V 3 V 4.5 V | 1.2 1.8 2.6 4.1 | 1 | 1.4 | V |
| V OH | P-port high- level output voltage P-port low- | 85 °C < T A ≤ 125 °C -40 °C ≤ T A ≤ 85 °C -40 °C ≤ T A ≤ 125 °C -40 °C ≤ T A ≤ 85 °C -40 °C ≤ T A ≤ 125 °C -40 °C ≤ T ≤ 85 °C | 1.65 V 2.3 V 3 V 4.5 V 1.65 V 2.3 V 3 V 4.5 | 1.0 1.1 1.7 2.5 4.0 | 0.45 0.25 0.2 | 0.25 | V | |
| V OL | level output voltage | A -40 °C ≤ T A ≤ 125 °C -40 °C ≤ T ≤ 85 °C A | V 1.65 V 2.3 V 3 V 4.5 V | 0.6 0.3 0.25 0.2 | V | |||
| I OL | SDA | V OL = 0.4 V | V OL = 0.4 V | 1.65 V to 5.5 V | 3 | mA | ||
| INT | V OL = 0.4 V | V OL = 0.4 V | 1.65 V to 5.5 V | 3 | 15 | |||
| I I | SCL, SDA, RESET ADDR | V I = V CCI or GND V I = V CCP or GND | V I = V CCI or GND V I = V CCP or GND | 1.65 V to 5.5 V | ±0.1 ±0.1 | μ A | ||
| I IH | P port | V I = V CCP | V I = V CCP | 1 | μ | A | ||
| I IL | P port | V I = GND | V I = GND -40 °C ≤ T A ≤ 85 °C | 1.65 V to 5.5 V 3.6 V to 5.5 V 2.3 V to 3.6 V | 1 10 6.5 | 20 15 | μ A | |
| Operating mode | 85 °C < T ≤ 125 °C | 1.65 V to 2.3 V 2.3 V to 3.6 V | 4 | 9 35 | 40 | |||
| I CC (I CCI + | Standby mode | A -40 °C ≤ T ≤ 85 °C A 85 °C < T A ≤ 125 °C | 1.65 V to 2.3 V 3.6 V to 5.5 V 2.3 V to 3.6 V 1.65 V to 2.3 V 2.3 V to 3.6 V 1.65 V to 2.3 V | 1.5 7 1 3.2 0.5 1.7 10 7 | μ A | |||
| Δ I CCI | SCL, SDA, ADDR | Input at V CCI - 0.6 V, Other inputs at V CCI or GND | Input at V CCI - 0.6 V, Other inputs at V CCI or GND | 1.65 V to 5.5 V | 25 | |||
| RESET | RESET at V CCI - 0.6 V, Other inputs at V CCI or GND | RESET at V CCI - 0.6 V, Other inputs at V CCI or GND | 55 | μ A | ||||
| Δ I CCP | P port | One input at V CCP - 0.6 V, Other inputs at V CCP or GND | One input at V CCP - 0.6 V, Other inputs at V CCP or GND | 1.65 V to 5.5 V | 80 | |||
| C i | SCL | V I = V CCI or GND | V I = V CCI or GND | 6 7 | pF |
Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
| MIN | MAX | UNIT | ||||
|---|---|---|---|---|---|---|
| V CCI | Supply voltage | Supply voltage | - 0.5 | 6.5 | V | |
| V CCP | Supply voltage | Supply voltage | - 0.5 | 6.5 | V | |
| V I | Input voltage (2) | Input voltage (2) | - 0.5 | 6.5 | V | |
| V O | Output voltage (2) | Output voltage (2) | - 0.5 | 6.5 V | ||
| I IK | Input clamp current | ADDR, RESET, SCL | V I < 0 | ±20 | mA | |
| I OK | Output clamp current | INT | V O < 0 | ±20 | mA | |
| I IOK | Input/output clamp current | P port | V O < 0 or V O > V CCP | ±20 | mA | |
| SDA | V O < 0 or V O > V CCI | ±20 | mA | |||
| I OL | Continuous output low current | P port | V O = 0 to V CCP | 50 | mA | |
| SDA, INT | V O = 0 to V CCI | 25 | mA | |||
| I OH | Continuous output high current | P port | V O = 0 to V CCP | 50 | mA | |
| I CC | Continuous current through GND Continuous current through V CCP Continuous current through V CCI | 200 160 10 | mA mA mA | |||
| T J | Max junction temperature | V CC ≤ 3.6 V 3.6 V < V CC ≤ 5.5 V | 130 90 | °C °C | ||
| T stg | Storage temperature | - 65 | 150 | °C |
Recommended Operating Conditions
| MIN | MAX | UNIT | ||||
|---|---|---|---|---|---|---|
| V CCI | Supply voltage | -40 °C ≤ T A ≤ 85 °C | -40 °C ≤ T A ≤ 85 °C | 1.65 | 5.5 | V |
| V CCI | 85 °C < T A ≤ 125 °C | 85 °C < T A ≤ 125 °C | 1.65 | 3.6 | V | |
| V CCP | Supply voltage | -40 °C ≤ T A ≤ 85 °C | -40 °C ≤ T A ≤ 85 °C | 1.65 | 5.5 | V |
| V CCP | 85 °C < T A ≤ 125 °C | 85 °C < T A ≤ 125 °C | 1.65 | 3.6 | V | |
| V IH | High-level input voltage | SCL, SDA | SCL, SDA | 0.7 × V CCI | V CCI (1) | V |
| V IH | RESET | RESET | 0.7 × V CCI | 5.5 | V | |
| V IH | ADDR, P17 - P00 | ADDR, P17 - P00 | 0.7 × V CCP | 5.5 | V | |
| V IL | Low-level input voltage | SCL, SDA, RESET | SCL, SDA, RESET | - 0.5 | 0.3 × V CCI | V |
| V IL | ADDR, P17 - P00 | ADDR, P17 - P00 | - 0.5 | 0.3 × V CCP | V | |
| I OH | High-level output current | P17 - P00 | P17 - P00 | 10 | mA | |
| I OL | Low-level output current | T J ≤ 65 °C | 25 | mA | ||
| I OL | T J ≤ 85 °C | 18 | mA | |||
| I OL | T J ≤ 105 °C | 9 | mA | |||
| I OL | T J ≤ 125 °C | 4.5 | mA | |||
| I OL | T J ≤ 135 °C | 3.5 | mA | |||
| T A | Operating free-air temperature | 1.65 V ≤ V CC ≤ 3.6 V | 1.65 V ≤ V CC ≤ 3.6 V | - 40 | 125 | °C |
| T A | 3.6 V < V CC ≤ 5.5 V | 3.6 V < V CC ≤ 5.5 V | - 40 | 85 | °C |
Thermal Information
| TCA6416A | TCA6416A | TCA6416A | ||
|---|---|---|---|---|
| THERMAL METRIC (1) | THERMAL METRIC (1) | PW (TSSOP) | RTW (WQFN) | ZQS (BGA MICROSTAR JUNIOR) |
| 24 PINS | 24 PINS | 24 PINS | ||
| R θ JA | Junction-to-ambient thermal resistance | 108.8 | 43.6 | 159.2 |
| R θ JC(top) | Junction-to-case (top) thermal resistance | 54.0 | 46.2 | 138.2 |
| R θ JB | Junction-to-board thermal resistance | 62.8 | 22.1 | 93.6 |
| ψ JT | Junction-to-top characterization parameter | 11.1 | 1.5 | 10.7 |
| ψ JB | Junction-to-board characterization parameter | 62.3 | 22.2 | 95.7 |
| R θ JC(bot) | Junction-to-case (bottom) thermal resistance | N/A | 10.7 | N/A |
Typical Application
Applications of the TCA6416A will have this device connected as a slave to an I2C master (processor), and the I2C bus may contain any number of other slave devices. The TCA6416A will be in a remote location from the master, placed close to the GPIOs to which the master needs to monitor or control.
A typical application of the TCA6416A will operate with a lower voltage on the master side (VCCI), and a higher voltage on the P-port side (VCCP). The P-ports can be configured as outputs connected to inputs of devices such as enable, reset, power select, the gate of a switch, and LEDs. The P-ports can also be configured as inputs to receive data from interrupts, alarms, status outputs, or push buttons.
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| TCA6416APWR | Texas Instruments | — |
| TCA6416ARTWR | Texas Instruments | WQFN-24-EP(4x4) |
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