- Pinout
- Footprint
TI TCA9544APWR
| Manufacturer | |
| MPN | TCA9544APWR |
| LCSC Part # | C2674619 |
| Packaging | TSSOP-20 |
| Customer # | |
| Key Attributes | Low-voltage 4-channel I²C and System Management Bus (SMbus) multiplexer with interrupt logic circuit |
| Datasheet |  TI TCA9544APWR |
Products Specifications
Show similar products (0) >| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Logic/Signal Switches, Multiplexers, Decoders | |
| Manufacturer | TI | |
| Packaging | TSSOP-20 | |
| Type | - | |
| Number of Channels | - | |
| Voltage - Supply | 1.65V~5.5V | |
| Operating Temperature | -40℃~+85℃ | |
| Features | Level shifting;Hot-swap protection | |
| Quiescent Current | 2uA | |
| Current - Output High(IOH) | 10uA | |
| Propagation Delay | 1ns@50pF | |
| Current - Output Low(IOL) | 7mA |
Additional Information
| Type | Details |
|---|---|
| Minimum | 1 |
| Multiple | 1 |
| Standard Packaging | 2000 |
| Sales Unit | Piece |
| EDA Models | EasyEDA Model |
Introduction
The TCA9544A is a four-channel bidirectional switching I²C multiplexer. The master SCL/SDA signal pair can be directed to any one of the four channels (SC0/SD0 - SC3/SD3) of the slave device. Four interrupt inputs (INT3 - INT0) are provided, with each interrupt input corresponding to a downstream pair. An interrupt output (INT̅) can serve as the AND operation of the four interrupt inputs. A power-on reset function returns the registers to the default state and initializes the I²C state machine, with all channels deselected at this time. A conducting gate is built on the switch, so that the VCC pin can be used to limit the maximum high voltage that will be passed by the TCA9544A. This allows different bus voltages to be used on each pair, so that 1.8V, 2.5V, or 3.3V components can communicate with 5V components without any additional protection. For each channel, an external pull-up resistor pulls the bus voltage up to the required voltage level. All I/O pins can withstand a voltage of 5.5V.
Applications
- Servers
- Routers (telecom switching equipment)
- Factory automation
- Products with I2C slave address conflicts (e.g., multiple identical temperature sensors)
| Qty | Unit Price | Total Amount |
|---|---|---|
| 1+ | $ 0.8649 | $ 0.86 |
| 10+ | $ 0.7065 | $ 7.07 |
| 30+ | $ 0.6289 | $ 18.87 |
| 100+ | $ 0.5497 | $ 54.97 |
| 500+ | $ 0.4996 | $ 249.80 |
| 1,000+ | $ 0.4753 | $ 475.30 |
Standard Packaging2000/Full Reel | ||
Products Specifications
Show similar products (0) >| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Logic/Signal Switches, Multiplexers, Decoders | |
| Manufacturer | TI | |
| Packaging | TSSOP-20 | |
| Type | - | |
| Number of Channels | - | |
| Voltage - Supply | 1.65V~5.5V | |
| Operating Temperature | -40℃~+85℃ | |
| Features | Level shifting;Hot-swap protection | |
| Quiescent Current | 2uA | |
| Current - Output High(IOH) | 10uA | |
| Propagation Delay | 1ns@50pF | |
| Current - Output Low(IOL) | 7mA |
Additional Information
| Type | Details |
|---|---|
| Minimum | 1 |
| Multiple | 1 |
| Standard Packaging | 2000 |
| Sales Unit | Piece |
| EDA Models | EasyEDA Model |
Introduction
The TCA9544A is a four-channel bidirectional switching I²C multiplexer. The master SCL/SDA signal pair can be directed to any one of the four channels (SC0/SD0 - SC3/SD3) of the slave device. Four interrupt inputs (INT3 - INT0) are provided, with each interrupt input corresponding to a downstream pair. An interrupt output (INT̅) can serve as the AND operation of the four interrupt inputs. A power-on reset function returns the registers to the default state and initializes the I²C state machine, with all channels deselected at this time. A conducting gate is built on the switch, so that the VCC pin can be used to limit the maximum high voltage that will be passed by the TCA9544A. This allows different bus voltages to be used on each pair, so that 1.8V, 2.5V, or 3.3V components can communicate with 5V components without any additional protection. For each channel, an external pull-up resistor pulls the bus voltage up to the required voltage level. All I/O pins can withstand a voltage of 5.5V.
Applications
- Servers
- Routers (telecom switching equipment)
- Factory automation
- Products with I2C slave address conflicts (e.g., multiple identical temperature sensors)
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
| Type | Details |
|---|---|
| RoHS | |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |