SN74CB3T3257PWRIn StockTexas Instruments
SN74CB3T3257PWR is a 4-bit 2:1 FET multiplexer/demultiplexer bus switch by Texas Instruments, featuring low on-state resistance and 3.3V/5V compatibility. Key specs: 4-channel 2:1 mux, ±15kV ESD protection, TSSOP-16 package, operating voltage 2.3V–3.6V. From $0.87, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Price
- From $0.8736(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4-bit 2:1 FET bus switch with ultra-low on-state resistance for minimal signal distortion
- Wide supply voltage range of 2.3V to 3.6V with 5V-tolerant I/O for mixed-voltage systems
- ±15kV ESD protection on all bus I/O pins for robust system reliability
- Bidirectional data flow with high-bandwidth signal switching up to 200MHz
- Industry-standard TSSOP-16 package for compact PCB layout
Applications
The SN74CB3T3257PWR is widely used in data bus switching and signal routing applications in smartphones, tablets, and consumer electronics where space and power efficiency are critical. It is ideal for memory bus multiplexing in embedded systems, enabling seamless switching between multiple memory devices or peripherals. The device is also used in communication equipment and industrial control systems requiring reliable, low-distortion bus isolation and signal path selection.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the SN74CB3T3257PWR and what does it do?
The SN74CB3T3257PWR is a 4-bit 2:1 FET multiplexer/demultiplexer bus switch from Texas Instruments. It enables bidirectional switching of digital signals between two data buses, operating at 2.3V to 3.6V supply voltage with 5V-tolerant I/O, making it ideal for mixed-voltage system designs.
What is the on-state resistance of the SN74CB3T3257PWR?
The SN74CB3T3257PWR features a very low on-state resistance (ron) of approximately 5Ω typical at 3.3V supply. This ultra-low resistance minimizes signal distortion and voltage drop across the switch, ensuring high signal integrity in high-speed bus switching applications up to 200MHz.
What package does the SN74CB3T3257PWR come in?
The SN74CB3T3257PWR comes in a TSSOP-16 (Thin Shrink Small Outline Package) with 16 pins and a reel tape-and-reel packaging suffix 'R', suitable for automated SMT assembly. This compact package is well-suited for space-constrained PCB designs in portable and consumer electronics.
What are typical applications for the SN74CB3T3257PWR?
Typical applications include memory bus multiplexing in embedded systems, signal routing in smartphones and tablets, data bus isolation in communication equipment, and I/O expansion in industrial control systems. Its low on-resistance and 5V-tolerant inputs make it especially useful in mixed 3.3V/5V logic environments.
What is the supply voltage range and are there compatible alternatives?
The SN74CB3T3257PWR operates from 2.3V to 3.6V supply voltage. Compatible alternatives within the Texas Instruments portfolio include the SN74CB3T3257PW (standard TSSOP, non-reel) and the SN74CBTLV3257 for lower-voltage applications. Third-party equivalents include the NXP 74HC257 and ON Semiconductor NLSX3257 in similar configurations.
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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 |
|---|---|---|
| 1+ | $1.7751 | $1.78 |
| 10+ | $1.3149 | $13.15 |
| 25+ | $0.8809 | $22.02 |
| 10000+ | $0.8736 | $8735.80 |
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