SN74CBTD3861PWR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74CBTD3861PWR is a 10-bit FET bus switch with level shifting from Texas Instruments, supporting TTL-compatible signals with active-low enable control. It handles 50 pF load capacitance and is housed in a 24-pin SOIC package for mixed-voltage bus interfacing. Available with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 24
- Lifecycle
- ACTIVE
- Datasheet
- SN74CBTD3861PWR 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
- 10-bit FET bus switch with integrated level shifting enabling direct connection between 3.3 V and 5 V logic domains without external level translators
- TTL-compatible inputs with active-low enable control allowing seamless integration into legacy 5 V TTL and mixed 3.3 V CMOS bus architectures
- CBT/FST family near-zero propagation delay switch architecture minimizing signal latency on high-speed data buses
- 24-pin SOIC package with 50 pF load capacitance rating supporting 10-bit wide data bus switching in compact PCB designs
Applications
The SN74CBTD3861PWR is used for bus switching and voltage level translation between 3.3 V and 5 V logic buses in mixed-supply embedded systems, bridging processors, FPGAs, and memory operating at different supply voltages without signal degradation. It is ideal for PCI bus interface circuits, ISA bus extenders, and memory card interfaces where 10-bit wide bus switching with integrated level shifting eliminates the need for separate translation ICs. Its TTL-compatible inputs also suit legacy backplane designs requiring reliable bus isolation and signal steering.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | TTL COMPATIBLE BUS SWITCH |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | CBT/FST/QS/5C/B |
| JESD-30 Code | R-PDSO-G24 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Number of Bits | 10 |
| Number of Functions | 10 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP24,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.003mA |
| Prop. Delay@Nom-Sup | 0.35ns |
| Propagation Delay (tpd) | 0.35ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74CBTD3861PWR:
Bus Driver, CBT/FST/QS/5C/B Series, 10-Func, 10-Bit, True Output, CMOS, PDSO24
Bus Driver, CBT/FST/QS/5C/B Series, 1-Func, 10-Bit, True Output, CMOS, PDSO24
Bus Driver, CBT/FST/QS/5C/B Series, 10-Func, 10-Bit, True Output, CMOS, PDSO24
Bus Driver, CBT/FST/QS/5C/B Series, 10-Func, 10-Bit, True Output, CMOS, PDSO24
Bus Driver, CBT/FST/QS/5C/B Series, 10-Func, 10-Bit, True Output, CMOS, PDSO24
Bus Driver, CBT/FST/QS/5C/B Series, 10-Func, 10-Bit, True Output, CM
Frequently Asked Questions
What is the level shifting capability of the SN74CBTD3861PWR?
The SN74CBTD3861PWR integrates level shifting within its FET switch architecture, allowing it to translate signals between 3.3 V and 5 V logic domains. This eliminates the need for external level translator ICs when connecting components operating at different supply voltages on a shared data bus.
How many bits does the SN74CBTD3861PWR switch and what is the enable polarity?
The SN74CBTD3861PWR switches 10 data bits simultaneously and uses an active-low enable input (OE bar) to connect or disconnect all 10 channels at once. This makes it suitable for byte-wide and 10-bit bus architectures requiring synchronous bus isolation control.
What package does the SN74CBTD3861PWR use?
The SN74CBTD3861PWR is housed in a 24-pin SOIC package (JESD-30 code R-PDSO-G24), providing a surface-mount form factor with sufficient pin count for 10 bidirectional data channels plus power and control signals, suitable for standard PCB assembly processes.
What logic family does the SN74CBTD3861PWR belong to and what are the performance benefits?
The SN74CBTD3861PWR belongs to the CBT/FST/QS/5C/B FET bus switch family, which is characterized by near-zero propagation delay since the FET passes signals directly rather than through a logic gate, minimizing timing impact on high-speed bus systems compared to traditional buffer-based bus switches.
What are typical applications for the SN74CBTD3861PWR?
Typical applications include PCI and ISA bus interfacing between 3.3 V and 5 V cards, memory module bus switching, FPGA to legacy TTL bus bridging, and peripheral mux circuits where 10 bits of simultaneous bus switching with integrated level translation and minimal propagation delay are required.
Related Guides
TPS54160DGQR Selection Guide: How to Choose a 60V Step-Down Buck Converter
Complete selection guide for the TPS54160DGQR 60V/1.5A step-down converter. Compare specs, alternatives, and sourcing options for industrial and automotive designs.
May 20, 2026
LMV932MM Dual Low-Voltage CMOS Op-Amp: Application Design Guide
Complete application design guide for the LMV932MM dual rail-to-rail CMOS op-amp: supply decoupling, RRIO design rules, stability, and recommended circuits for 1.8V–5.5V battery-powered systems.
May 20, 2026
TL084CN Equivalent and Replacements: JFET-Input Quad Op-Amp Comparison Guide
Compare TL084CN with TL074, LF347, and LM324 quad op-amps. Pin-compatible equivalents, key specs, and when to choose each for your analog design.
May 20, 2026
TPS386000RGPR Quad Voltage Supervisor: Selection and Sourcing Guide (2025)
Compare TPS386000RGPR with TPS386040RGPR, TPS3700, and TPS3823 voltage supervisors. Key specs, threshold programming, watchdog options, and sourcing tips.
May 20, 2026
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.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”