SN74CBT3861DGVRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74CBT3861DGVRG4 is a 10-bit CMOS FET bus switch IC from Texas Instruments with active-low enable control in the CBT/FST bus switch family. It provides near-zero propagation delay switching for 10-bit data buses, offers approximately 5 Ω on-resistance, and is packaged in a 24-pin VSSOP for compact PCB bus routing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 24
- Lifecycle
- OBSOLETE
- Datasheet
- SN74CBT3861DGVRG4 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 SN74CBT3861DGVRG4?
- 10-bit FET bus switch with near-zero propagation delay for transparent bidirectional signal switching
- Single active-low enable control for simultaneous 10-channel bus connection or isolation
- Low on-resistance approximately 5 Ω for minimal signal integrity degradation across bus channels
- 5 V compatible CBT/FST bus switch family for data bus mux and isolation applications
- 24-pin VSSOP (Very Small Outline Package) for ultra-compact high-density PCB designs
What is SN74CBT3861DGVRG4 used for?
The SN74CBT3861DGVRG4 is used in high-density PCB designs requiring 10-bit bus switching such as PCI-to-ISA bus bridging, PC memory bus isolation, and multi-port Ethernet controller bus sharing. It is also employed in FPGA peripheral bus multiplexing and embedded SoC interface switching where minimal signal delay is critical and board space is limited.
What are the specifications of SN74CBT3861DGVRG4?
| Pbfree Code | No |
| YTEOL | 0 |
| 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 | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP24,.25,16 |
| 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 | 0.25ns |
| Propagation Delay (tpd) | 0.25ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.4mm |
| 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 SN74CBT3861DGVRG4 datasheet?
SN74CBT3861DGVRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74CBT3861DGVRG4?
Compatible alternatives and drop-in replacements for SN74CBT3861DGVRG4:
Bus Driver, CBT/FST/QS/5C/B Series, 1-Func, 1-Bit, True Output, CMOS, PDSO5
Bus Driver, CBT/FST/QS/5C/B Series, 1-Func, 1-Bit, True Output, CMOS, PDSO5
Bus Driver, CBT/FST/QS/5C/B Series, 10-Func, 10-Bit, True Output, CMOS, PDSO24
Frequently Asked Questions
What is the SN74CBT3861DGVRG4 and what does it do?
The SN74CBT3861DGVRG4 is a 10-bit CMOS FET bus switch from Texas Instruments. It allows bidirectional signal routing between two 10-bit buses using low on-resistance FET switches, controlled by an active-low enable input. When enabled, it provides a near-transparent path with approximately 5 Ω on-resistance and virtually zero propagation delay, making it ideal for high-speed bus switching applications.
What package does the SN74CBT3861DGVRG4 use and how many pins does it have?
The SN74CBT3861DGVRG4 is housed in a 24-pin VSSOP (Very Thin Shrink Small Outline Package), also identified by the JESD-30 code R-PDSO-G24. This compact surface-mount package is well-suited for space-constrained PCB designs requiring dense bus routing.
How is the SN74CBT3861DGVRG4 controlled, and what logic levels does it support?
The device is controlled via an active-low enable (OE#) input. When the enable pin is driven low, all 10 FET switch channels are turned on, connecting the A-side bus to the B-side bus. When the enable is high, all channels are turned off, isolating the two buses. It is compatible with standard CMOS and TTL logic levels, supporting operation in 3.3 V and 5 V supply environments.
What are typical applications for the SN74CBT3861DGVRG4?
Typical applications include data bus isolation and sharing in microprocessor systems, memory bus switching, multi-board interconnect designs, and any application where a 10-bit bidirectional bus needs to be selectively connected or isolated. Its low on-resistance and minimal propagation delay make it suitable for high-speed digital designs in computing, communications, and industrial equipment.
Is the SN74CBT3861DGVRG4 RoHS compliant?
The JESD-609 code for this part is e4, which indicates it is lead-free and RoHS compliant. The 'G4' suffix in the part number also signifies that the device meets green and RoHS requirements as part of Texas Instruments' product compliance program.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 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.
More from Texas Instruments
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.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit