SN74CBT3861DWRE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74CBT3861DWRE4 is a 10-bit FET bus switch from Texas Instruments with TTL-compatible inputs and a single active-low enable control. It provides bidirectional, low-resistance signal routing across 10 data lines simultaneously, housed in a 24-pin SOIC package, making it ideal for bus multiplexing and signal isolation in digital systems.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 24
- Lifecycle
- OBSOLETE
- Datasheet
- SN74CBT3861DWRE4 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 bidirectional FET bus switch for parallel data line control
- TTL-compatible input levels for seamless integration with standard logic
- Single active-low enable (OE) for simple bus connect/disconnect control
- Low on-state resistance for minimal signal degradation
- 50pF load capacitance rating for high-speed bus applications
- 24-pin SOIC package in tape-and-reel for automated assembly
Applications
The SN74CBT3861DWRE4 is used in memory bus isolation, processor data bus expansion, and backplane bus switching applications where 10 data signals must be connected or disconnected as a group. It is also commonly employed in FPGA prototyping boards, test and measurement systems, and digital communication interfaces requiring transparent bus switching with minimal propagation delay.
Specifications
| YTEOL | 0 |
| Additional Feature | TTL COMPATIBLE BUS SWITCH |
| Control Type | ENABLE LOW |
| Count Direction | BIDIRECTIONAL |
| 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 | SOP24,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.05mA |
| Prop. Delay@Nom-Sup | 0.25ns |
| Propagation Delay (tpd) | 0.35ns |
| 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 | 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 | Taiwan |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74CBT3861DWRE4:
Bus Driver, CBT/FST/QS/5C/B Series, 10-Func, 10-Bit, True Output, CMOS, PDSO24
Frequently Asked Questions
What is the maximum operating voltage for the SN74CBT3861DWRE4?
The SN74CBT3861DWRE4 operates with a supply voltage (VCC) of 3.3V, making it compatible with 3.3V logic systems. The device features TTL-compatible inputs, which allows it to interface with standard TTL logic levels. It is important not to exceed the maximum VCC rating to ensure reliable operation and device longevity.
How does the enable control work on the SN74CBT3861DWRE4?
The SN74CBT3861DWRE4 uses a single active-low enable (OE#) control pin to manage all 10 bidirectional data channels simultaneously. When OE# is driven low, all 10 FET switches are turned on, allowing signals to pass bidirectionally between the A and B ports. When OE# is driven high, all switches are turned off and the bus lines are isolated, presenting a high-impedance state on both port sides.
What are typical applications for the SN74CBT3861DWRE4?
The SN74CBT3861DWRE4 is commonly used in bus multiplexing, memory address and data bus switching, and signal isolation in digital systems. Its 10-bit width and low on-resistance make it well-suited for high-speed data bus expansion in microprocessor and DSP-based designs, as well as in PCIe, DDR memory, and other high-bandwidth interconnect architectures where minimal signal distortion is critical.
What package does the SN74CBT3861DWRE4 come in and what does the 'E4' suffix indicate?
The SN74CBT3861DWRE4 is housed in a 24-pin SOIC (Small Outline Integrated Circuit) package with a wide body (DW suffix), suitable for standard surface-mount assembly processes. The 'E4' suffix in the part number indicates that the device complies with RoHS regulations and is manufactured using a lead-free, halogen-free process (JESD-609 Code e4), making it suitable for environmentally compliant designs.
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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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