TC74SB3157CFU Toshiba Integrated Circuit (SOT23 (6-Pin)) In Stock
The Toshiba TC74SB3157CFU is a high-speed CMOS single 1-of-2 analog multiplexer/demultiplexer operating from 1.65 V to 5.5 V supply in a compact 6-pin US-6 (SOT-23) package, suitable for signal routing and channel selection in portable and mixed-voltage digital systems.
- Manufacturer
- Toshiba
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- TC74SB3157CFU Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TC74SB3157CFU?
- Single 1-of-2 analog multiplexer/demultiplexer enabling bidirectional signal routing with one select input
- Wide 1.65 V to 5.5 V supply voltage range supporting mixed-voltage system designs from 1.8 V to 5 V
- High-speed CMOS SB (Super Buffer) process for low propagation delay and fast switching
- Compact 6-pin US-6 (SOT-23) package minimizing PCB footprint in portable applications
- Bidirectional analog signal switching for audio, digital, and mixed-signal multiplexing
What is TC74SB3157CFU used for?
The TC74SB3157CFU is used in portable electronics, IoT sensors, and mixed-signal PCB designs requiring a single-channel analog or digital signal switch between 2 paths. Its 1.65 V to 5.5 V supply range allows integration into 1.8 V, 3.3 V, and 5 V systems without level translation, making it ideal for microcontroller peripheral selection, I2C bus switching, and audio signal routing. The compact US-6 package enables use in wearables, handheld instruments, and space-constrained embedded modules.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TC74SB3157CFU datasheet?
TC74SB3157CFU Datasheet DownloadOfficial datasheet from Toshiba
What are equivalent replacements for TC74SB3157CFU?
Compatible alternatives and drop-in replacements for TC74SB3157CFU:
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Frequently Asked Questions
What supply voltage range does TC74SB3157CFU support and which microcontroller platforms can it interface with directly?
The TC74SB3157CFU operates from 1.65 V to 5.5 V, making it directly compatible with 1.8 V (ARM Cortex-M0+), 3.3 V (STM32, ESP32), and 5 V (AVR/Arduino) microcontroller families without any additional level-shifting circuitry. This wide range simplifies mixed-voltage board design by allowing one component to serve across multiple logic families in the same system.
For a 2-channel sensor selector design, how does TC74SB3157CFU's 1-of-2 configuration reduce component count versus discrete switch approaches?
The TC74SB3157CFU integrates a 1-of-2 multiplexer and demultiplexer in a single 6-pin package, replacing what would otherwise require 2 discrete SPDT analog switches or 4 logic gates to implement the same selection function. This saves at least 1 PCB component, reduces routing complexity, and decreases total board space by consolidating the signal routing logic into a single SOT-23 footprint.
How does TC74SB3157CFU's bidirectional operation benefit I2C bus expansion or SPI device sharing designs?
Because the TC74SB3157CFU passes signals bidirectionally without requiring separate transmit/receive control, it can switch I2C SDA/SCL lines or SPI MISO signals between 2 buses or 2 devices by toggling only the select pin. This eliminates the need for a directional buffer (which requires OE and DIR control) in systems where the signal direction reverses dynamically, simplifying firmware and reducing GPIO usage on the host microcontroller.
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