TCA9546ADR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments TCA9546ADR is a 4-channel I2C bus multiplexer with up to 400 kHz operation and 70 Ω on-state resistance in a 16-pin SOIC package. It enables address conflict resolution for multiple identical I2C devices. Available in stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- TCA9546ADR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5241(MOQ 100)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TCA9546ADR?
- 4-channel I2C multiplexing enables connecting up to 4 separate I2C bus segments on a single master
- Low 70 Ω on-state resistance and 400 kHz fast-mode I2C compatibility for reliable bus communication
- I2C address selection via 3 hardware pins allows up to 8 devices on one bus, expanding system flexibility
What is TCA9546ADR used for?
The TCA9546ADR is widely used in embedded systems where multiple I2C sensors share the same 7-bit address, such as multi-sensor boards with identical IMUs or EEPROMs. It is ideal for server management and industrial IoT nodes where I2C bus isolation between subsystems is required. The device also fits camera module multiplexing in multi-camera platforms operating at 3.3 V or 5 V.
What are the specifications of TCA9546ADR?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | DIFFERENTIAL MULTIPLEXER |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Number of Channels | 4 |
| Number of Functions | 1 |
| On-state Resistance-Max (Ron) | 70Ω |
| Output | SEPARATE OUTPUT |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Signal Current-Max | 0.1A |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.65V |
| Supply Voltage-Nom (Vsup) | 1.8V |
| Surface Mount | YES |
| Switch-off Time-Max | 1ns |
| Switch-on Time-Max | 1ns |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Where can I find the TCA9546ADR datasheet?
TCA9546ADR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TCA9546ADR?
Compatible alternatives and drop-in replacements for TCA9546ADR:
Frequently Asked Questions
How many I2C channels can TCA9546ADR switch and what is the maximum I2C bus speed it supports?
The TCA9546ADR provides 4 independent I2C channels and supports up to 400 kHz fast-mode I2C operation. Each channel features a 70 Ω on-state resistance, ensuring minimal signal degradation even in long PCB trace designs operating at 3.3 V or 5 V supply.
Which sensor-heavy design benefits most from using TCA9546ADR as an I2C multiplexer?
Any design connecting 4 or more identical I2C sensors with the same 7-bit address benefits most. For example, a multi-zone temperature monitoring system using four identical TMP117 sensors can coexist on one I2C master bus by routing each sensor through a separate channel of the TCA9546ADR, bypassing the 128-address limit.
What is the on-state resistance of TCA9546ADR and how does it affect signal integrity?
The TCA9546ADR has a maximum on-state resistance (Ron) of 70 Ω per channel. When combined with bus pull-up resistors typically between 1 kΩ and 10 kΩ, this 70 Ω resistance introduces negligible voltage drop at 400 kHz, ensuring clean I2C signal edges in both 3.3 V and 5 V systems.
When would TCA9546ADR be selected over TCA9548A for a 4-bus I2C expansion design?
TCA9546ADR is chosen when exactly 4 I2C channels suffice and board space favors a 16-pin SOIC package rather than the 24-pin SOIC of the 8-channel TCA9548A. Both devices use the same I2C control protocol, but TCA9546ADR draws slightly less power and occupies approximately 20% less PCB area in space-constrained designs.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $0.6098 | $60.98 |
| 1000+ | $0.5807 | $580.70 |
| 10000+ | $0.5241 | $5241.00 |
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