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Renesas 74CBTLV3861QG
- Part No.:
- 74CBTLV3861QG
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
74CBTLV3861QG.pdf
- Description:
- IC BUS SWITCH 10 X 1:1 24QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,487
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Product details
Overview
74CBTLV3861QG from Renesas Electronics is a low-voltage 10-bit bi-directional bus switch IC with 5Ω on-resistance, operating from 2.3V to 3.6V supply, supporting industrial temperature range (−40°C to +85°C), and featuring power-off isolation and over-voltage tolerance for high-speed 3.3V bus switching applications.
For engineers reviewing the 74CBTLV3861QG datasheet, 74CBTLV3861QG pinout, 74CBTLV3861QG application, or 74CBTLV3861QG equivalent, key selection considerations include its QSOP-24 package, OE-controlled A/B port connectivity, sub-0.25ns propagation delay, ±1µA input leakage, and 50µA off-state leakage under VCC = 0V conditions.
Technical Context
The 74CBTLV3861QG implements ten independent analog switches controlled by a single active-low output enable (OE) signal; when OE is low, A1–A10 are directly connected to B1–B10 with minimal RC delay, and when OE is high, both ports enter high-impedance isolation. Its architecture supports hot-swap and partial-power-down system configurations.
It operates within strict DC electrical limits: VI/O withstands −0.5V to +4.6V regardless of VCC state, latch-up immunity exceeds 100mA, and ESD robustness meets >2000V HBM and >200V MM standards - enabling reliable use in noisy industrial backplanes and mixed-voltage I/O domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3V to 3.6V - enables direct interface with 2.5V and 3.3V logic families without level shifters |
| RON (Typ.) | 5Ω at VCC = 2.5V, IO = 64mA - ensures <100mV voltage drop across switch under full load |
| tPD (Max) | 0.25ns - supports >4GHz signal integrity in high-speed parallel bus paths |
| IOFF (Max) | 50µA at VCC = 0V - guarantees true isolation during power sequencing or shutdown |
| VI/O Range | −0.5V to +4.6V - allows safe connection to 5V-tolerant signals without clamping diodes |
| ESD Rating | >2000V HBM, >200V MM - reduces field failure risk in manual handling and board-level assembly |
| Operating Temp | −40°C to +85°C - qualified for industrial control, motor drives, and factory automation environments |
Pinout & Package
74CBTLV3861QG is housed in a 24-pin QSOP (PCG24) package, 3.9mm × 8.7mm body size, 0.635mm pitch, with exposed pad not present. Pin 1 is top-left corner (A1), pin 24 is bottom-right (VCC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1–A10 | Data Input/Output Port A | Bi-directional signal terminals tied to upstream logic or controller side; tolerate −0.5V to +4.6V |
| B1–B10 | Data Input/Output Port B | Bi-directional signal terminals tied to downstream bus or peripheral side; electrically identical to A-side |
| OE | Active-Low Output Enable | Controls all 10 switches simultaneously; must be pulled up to VCC via external resistor during power-up |
| VCC | Positive Supply | 2.3V–3.6V core supply; powers internal switch control logic and defines VIH/VIL thresholds |
| GND | Ground Reference | Signal and supply return; required for proper RON and leakage specification compliance |
| NC | No Connect | Pin 1 is NC - must remain unconnected; no internal bond wire or circuitry attached |
Key Features
| Feature | Design Value |
|---|---|
| 5Ω Typical On-Resistance | Minimizes insertion loss and timing skew across all 10 channels at 3.3V operation |
| Power-Off Isolation | Guarantees <50µA leakage between A/B ports when VCC = 0V - critical for hot-swap backplane designs |
| Over-Voltage Tolerance | Supports −0.5V to +4.6V on A/B pins independent of VCC - eliminates need for external clamps |
| Industrial Temperature Range | Validated operation from −40°C to +85°C - suitable for DIN-rail mounted PLCs and drive controllers |
| Low Propagation Delay | Sub-0.25ns max tPD preserves signal edge integrity in DDR, PCI, and legacy parallel bus applications |
Applications
| PCI Express Slot Multiplexing | Industrial Backplane Bus Isolation |
|---|---|
Use Scenario: Dynamically routing PCIe Gen1/Gen2 lanes between two host processors sharing one slot. IC Role / Device Role / Timing Role: 10-bit bidirectional analog switch enabling lane reconfiguration without signal degradation. Use Value: 5Ω RON and 0.25ns tPD maintain PCIe eye diagram integrity; OE-controlled isolation prevents bus contention during handoff. | Use Scenario: Isolating CPU-to-I/O module communication in modular PLC chassis during firmware update. IC Role / Device Role / Timing Role: High-impedance barrier between powered and unpowered modules during hot-swap events. Use Value: 50µA IOFF at VCC = 0V ensures zero current injection into live backplane; −40°C to +85°C rating matches DIN-rail thermal profile. |
| Legacy Parallel Interface Sharing | Multi-Processor Memory Bus Arbitration |
Use Scenario: Sharing a 10-bit parallel LCD interface between ARM and FPGA subsystems in HMI panel. IC Role / Device Role / Timing Role: Bidirectional bus switch enabling time-multiplexed access to shared display data lines. Use Value: Symmetric A/B structure and 5Ω RON prevent skew between data bits; OE timing (tEN/tDIS < 4.5ns) enables cycle-accurate arbitration. | Use Scenario: Arbitrating access to dual-port SRAM between two microcontrollers in safety-critical motion controller. IC Role / Device Role / Timing Role: Low-latency, low-distortion path for address/data/control lines during memory handover. Use Value: Sub-0.25ns tPD avoids setup/hold violations; over-voltage tolerance protects against transient coupling during cross-switch transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBTLV3861PWR | TSSOP-24 (PGG24); identical electrical specs; same RON, tPD, and VI/O range | Same functional behavior but different package footprint - requires PCB layout change | Select when TSSOP-24 is preferred for automated assembly or thermal performance |
| 74LVC1G3157GW | Single-pole double-throw (SPDT) 2-channel switch; 6Ω RON; only 2 bits per device | Requires five units to match 10-bit functionality; higher board area and routing complexity | Select only for space-constrained designs where channel count can be distributed across multiple packages |
Compared with SN74CBTLV3861PWR and 74LVC1G3157GW, the 74CBTLV3861QG offers native 10-bit integration in QSOP-24, eliminating inter-device skew and reducing component count - critical for deterministic timing in industrial bus arbitration.
Availability
74CBTLV3861QG is available at Aetrix Electronics and suitable for industrial backplane isolation, multi-processor bus arbitration, and legacy parallel interface sharing requiring stable component supply across extended lifecycle programs.
Supply support for 74CBTLV3861QG includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, SoCs, power management, and timing solutions for automotive, industrial, and infrastructure markets.
The CBTLV family delivers low-voltage, high-speed bus switches optimized for 2.5V/3.3V systems requiring minimal propagation delay, power-off isolation, and robust ESD performance - targeting industrial control, test equipment, and communications backplanes.
FAQ
What is the recommended pull-up resistor value for OE on the 74CBTLV3861QG?
The OE pin should be tied to VCC through a pull-up resistor to ensure high-impedance state during power-up. The minimum resistor value depends on the driver's current-sinking capability; typical values range from 4.7kΩ to 10kΩ for standard CMOS drivers. For the 74CBTLV3861QG, a 4.7kΩ resistor provides sufficient margin while limiting current draw below 1mA at 3.3V. Always verify against the driving source's VOH/IOL specs in your system.
Does the 74CBTLV3861QG support 5V-tolerant I/O?
The 74CBTLV3861QG does not support 5V logic levels on its A/B pins under normal operation, but it tolerates −0.5V to +4.6V over-voltage conditions regardless of VCC state. This means transient 5V spikes (e.g., from crosstalk or ESD) are safely clamped, but sustained 5V signaling will exceed absolute maximum ratings and may cause damage. Use only with 2.5V or 3.3V systems unless external protection is added.
Can the 74CBTLV3861QG be used in hot-swap applications?
Yes - the 74CBTLV3861QG is specifically designed for hot-swap use cases. Its power-off isolation (IOFF ≤ 50µA at VCC = 0V), over-voltage tolerance (−0.5V to +4.6V), and latch-up immunity (>100mA) allow safe insertion/removal in live backplanes. OE must be held high (via pull-up) before VCC ramps to ensure immediate high-Z state at power-on. This behavior is validated across −40°C to +85°C.
What is the maximum continuous current per channel for the 74CBTLV3861QG?
The 74CBTLV3861QG supports up to 128mA continuous channel current per A/B pair, as specified in Absolute Maximum Ratings. However, for guaranteed RON performance and thermal stability, Renesas recommends limiting steady-state current to 64mA - at which point RON remains ≤8Ω across temperature and voltage ranges. Exceeding 64mA may increase on-resistance variation and self-heating, affecting timing margins in precision bus applications.
Is the 74CBTLV3861QG RoHS compliant and lead-free?
Yes - the 74CBTLV3861QG is RoHS compliant and lead-free, as confirmed by Renesas' ordering information indicating "G" suffix (Green) in the part number and packaging documentation specifying halogen-free and Pb-free construction. It meets JEDEC J-STD-609 Category 1a marking requirements and is compatible with standard lead-free reflow profiles (peak 260°C).
74CBTLV3861QG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 74CBTLV
- Package/Case:
- 24-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Bus Switch
- Circuit:
- 10 x 1:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2.3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QSOP
74CBTLV3861QG FAQ
1.How can I place an order for 74CBTLV3861QG through Aetrix?
Please submit a Request for Quotation (RFQ) for 74CBTLV3861QG on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74CBTLV3861QG reliable?
The price and inventory of 74CBTLV3861QG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74CBTLV3861QG is usually 5 days.
3.What payment methods are accepted for 74CBTLV3861QG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74CBTLV3861QG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74CBTLV3861QG?
74CBTLV3861QG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74CBTLV3861QG order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74CBTLV3861QG?
For technical support, including 74CBTLV3861QG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74CBTLV3861QG requirements.
6.How does Aetrix verify that 74CBTLV3861QG is sourced from the original manufacturer or authorized distributors?
All 74CBTLV3861QG products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74CBTLV3861QG meets industry standards.
7.What is the process for return or replacement of 74CBTLV3861QG?
All 74CBTLV3861QG units undergo pre-shipment inspection (PSI). If there is an issue with 74CBTLV3861QG, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74CBTLV3861QG part is unused and in its original packaging.
Return procedure for 74CBTLV3861QG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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