SN74CBTLV3125DG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments SN74CBTLV3125DG4 is a quad low-voltage bus switch with 3-state outputs in a 14-pin SOIC package, operating from 1.65 V to 3.6 V. It features active-low output enables and supports 50 pF load capacitance for fast signal switching. Available from stock worldwide with RoHS-compliant green packaging.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- SN74CBTLV3125DG4 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
What are the key features of SN74CBTLV3125DG4?
- Quad unidirectional bus switch with active-low enables supporting 1.65 V to 3.6 V supply range
- Low ON-state resistance enables near-transparent signal transmission with minimal propagation delay across 50 pF loads
- 14-pin SOIC (SOIC-14) green package (JESD-609 e4) ensures RoHS compliance and broad PCB compatibility
What is SN74CBTLV3125DG4 used for?
The SN74CBTLV3125DG4 is commonly deployed in low-voltage bus isolation and signal routing on processor boards, memory interfaces, and FPGA expansion cards where 1.8 V or 2.5 V logic levels are standard. Its quad-channel architecture makes it ideal for multiplexing data buses between multiple peripherals on embedded SoC designs. It is also used in portable consumer electronics and communication equipment to selectively enable or disable signal paths with minimal power consumption.
What are the specifications of SN74CBTLV3125DG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | BUS SWITCH |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | CBTLV/3B |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Number of Bits | 4 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.01mA |
| Prop. Delay@Nom-Sup | 0.25ns |
| 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 |
| 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 |
Where can I find the SN74CBTLV3125DG4 datasheet?
SN74CBTLV3125DG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74CBTLV3125DG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What supply voltage range does the SN74CBTLV3125DG4 support and how does that affect system design?
The SN74CBTLV3125DG4 operates from 1.65 V to 3.6 V, covering 1.8 V, 2.5 V, and 3.3 V logic systems. This wide range lets designers use a single component across multiple board voltage domains, reducing BOM complexity in mixed-voltage processor and FPGA designs with 4 independent switch channels.
For a high-speed data bus design, how does the SN74CBTLV3125DG4 handle signal integrity at 50 pF load capacitance?
The SN74CBTLV3125DG4 is characterized at a 50 pF load capacitance, maintaining low propagation delay and flat frequency response suitable for typical board-level bus speeds. Its low ON-resistance minimizes RC time-constant signal distortion, keeping edge rates acceptable for data rates encountered in standard 3.3 V logic buses.
When would you choose the SN74CBTLV3125DG4 over a level-shifting buffer in a 3.3 V to 1.8 V interface?
If both sides of the interface operate within the 1.65 V to 3.6 V range accepted by the SN74CBTLV3125DG4, using it as a bus switch avoids the added propagation delay introduced by level-shifting buffers. The 4-channel enable-low control also simplifies tri-state bus arbitration compared to implementing 4 separate level shifters, especially in 14-pin SOIC footprint-constrained designs.
How does the active-low enable control of the SN74CBTLV3125DG4 simplify bus arbitration in multi-master systems?
Each of the 4 channels has an independent active-low output-enable pin, allowing the controller to de-assert individual channels to create a high-impedance state without affecting the remaining 3 channels. This per-channel tri-state control is ideal for multi-master I2C or SPI bus architectures where only one master at a time should drive the 3.3 V shared bus.
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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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