SN74CBTLV3257DE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74CBTLV3257DE4 is a low-voltage 4-bit 2:1 multiplexer and demultiplexer from Texas Instruments in the CBTLV bus switch family, supporting bidirectional signal flow with active-low enable control in a 16-pin SOIC package. It operates with 30 pF load capacitance at low-voltage CMOS levels for signal routing and channel selection in 1.8V and 2.5V digital systems. Available in stock globally for bus multiplexing and data path switching applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- SN74CBTLV3257DE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4-bit bidirectional 2:1 multiplexer/demultiplexer enabling flexible A-to-B or B-to-A channel routing
- Low-voltage CBTLV/3B family supporting 1.8V and 2.5V operation for modern low-power digital systems
- Active-low output enable with 30 pF load capacitance for fast, clean bus switching
- 16-pin SOIC package (JESD-30 R-PDSO-G16) for standard surface-mount PCB assembly
- Pb-free RoHS-compliant green construction (JESD-609 e4) for environmentally compliant designs
Applications
The SN74CBTLV3257DE4 is used in memory bank switching, bus multiplexing, and data path routing in portable electronics, embedded systems, and mobile devices operating at 1.8V or 2.5V logic levels. Its bidirectional architecture and low-voltage compatibility make it ideal for I2C/SPI bus arbitration, memory interface multiplexing, and signal channel selection in low-power SoC peripheral designs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Control Type | ENABLE LOW |
| Count Direction | BIDIRECTIONAL |
| Family | CBTLV/3B |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 30pF |
| Logic IC Type | BUS EXCHANGER |
| Number of Bits | 2 |
| Number of Functions | 4 |
| Number of Ports | 3 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.01mA |
| Prop. Delay@Nom-Sup | 0.15ns |
| Propagation Delay (tpd) | 0.25ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 2.3V |
| Supply Voltage-Nom (Vsup) | 2.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| 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 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What multiplexing function does the SN74CBTLV3257DE4 implement?
The SN74CBTLV3257DE4 implements a 4-bit 2:1 multiplexer/demultiplexer, creating a bidirectional bus switch that routes signals between two 4-bit buses (A and B) based on a select input. The bidirectional (bus exchanger) topology allows data to flow in either direction between the selected ports, suitable for shared-bus designs where multiple sources may drive the same bus segment.
What voltage levels does the SN74CBTLV3257DE4 support?
The SN74CBTLV3257DE4 belongs to the CBTLV/3B low-voltage bus switch family, designed for 1.8V and 2.5V logic systems. It is compatible with low-voltage CMOS (LVCMOS) signal levels found in modern mobile SoCs, DDR memory interfaces, and low-power embedded systems. The 30 pF load capacitance specification supports reliable signal switching at these lower voltage levels.
How is the SN74CBTLV3257DE4 controlled?
The SN74CBTLV3257DE4 uses an active-low enable input (OE) for bus isolation and a select input (SEL) to choose between the two 4-bit channels. When OE is LOW, signals are routed according to SEL; when OE is HIGH, all outputs are in high impedance. This control scheme allows deterministic bus routing and prevents contention in shared-bus multiplexed architectures.
Is the SN74CBTLV3257DE4 RoHS compliant and what package is it available in?
Yes, the SN74CBTLV3257DE4 is Pb-free and meets RoHS environmental compliance requirements, confirmed by its Pb-free code 'Yes' and JESD-609 code e4. It is packaged in a 16-pin SOIC (Small Outline IC), JESD-30 code R-PDSO-G16, a standard surface-mount package suitable for automated PCB assembly in commercial and industrial product lines.
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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.
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