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Renesas 74CBTLV6800QG
- Part No.:
- 74CBTLV6800QG
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
74CBTLV6800QG.pdf
- Description:
- IC BUS SWITCH 24QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,218
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Product details
Overview
74CBTLV6800QG from Renesas Electronics is a low-voltage 10-bit bi-directional bus switch with precharged B-port outputs, 5Ω on-state resistance, VCC range of 2.3V–3.6V, and industrial temperature operation (−40°C to +85°C), used for high-speed 3.3V bus isolation and live-insertion noise suppression in backplane and hot-swap systems.
For engineers reviewing the 74CBTLV6800QG datasheet, 74CBTLV6800QG pinout, 74CBTLV6800QG application, or 74CBTLV6800QG equivalent, key selection criteria include OE-controlled switching, BIASV-biased precharge, over-voltage tolerance, power-off isolation, and QSOP-24 package compatibility with legacy QS3800 designs.
Technical Context
The 74CBTLV6800QG implements a single 10-bit bus switch with one active-low output-enable (OE) input controlling bidirectional conduction between A and B ports. When enabled, it delivers ≤5Ω RON with sub-0.25ns propagation delay at 3.3V, supporting high-speed signal integrity across 3.3V buses.
Its precharge architecture applies BIASV (1.3V to VCC) to the B port via an internal ~10-kΩ path when OE is high, suppressing live-insertion transients. The device maintains isolation under power-off conditions and tolerates inputs up to 4.6V independent of VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3V–3.6V - supports standard 2.5V/3.3V logic domains without level translation |
| RON (Max) | 8Ω at VCC = 2.3V, 15mA - ensures minimal voltage drop and signal distortion during switching |
| Propagation Delay | 0.25ns max at 3.3V - enables >1GHz bus switching without timing budget impact |
| BIASV Range | 1.3V to VCC - allows user-selectable precharge voltage to match system reference or reduce ground bounce |
| IOFF (Max) | 50µA at VCC = 0V - guarantees robust power-off isolation for system-level safety |
| ESD Rating | 2000V HBM, 200V MM - meets industrial handling requirements without external protection |
| Operating Temp | −40°C to +85°C - qualified for industrial control, telecom infrastructure, and embedded computing |
Pinout & Package
74CBTLV6800QG is packaged in a 24-pin Quarter-size Small Outline Package (QSOP, PCG24), 3.9mm × 8.7mm body, 0.635mm pitch, with exposed pad not present. Pin numbering follows JEDEC MS-012 standard top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 | A1–A10 | Input/output port A - bidirectionally connected to B port when OE low; driven by upstream logic |
| 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 | B1–B10 | Input/output port B - precharged to BIASV when OE high; interfaces to hot-swappable subsystems |
| 21 | OE | Active-low output enable - must be pulled up to VCC during power-up to ensure default high-Z state |
| 22 | BIASV | Bias voltage input - sets precharge level for B port; can be tied to VCC, GND, or intermediate rail |
| 23 | VCC | Supply voltage - powers internal logic and switch circuitry; decoupling required per layout guidelines |
| 24 | GND | Ground reference - common return for all ports, bias, and supply; separate analog/digital grounding not required |
Key Features
| Feature | Design Value |
|---|---|
| Precharged B-port outputs | Reduces live-insertion noise by actively biasing B1–B10 to BIASV via ~10-kΩ path when OE is high |
| Power-off isolation | IOFF ≤ 50µA at VCC = 0V ensures no leakage path between A and B ports during system shutdown |
| Over-voltage tolerant I/O | Supports VI up to 4.6V regardless of VCC - enables safe interfacing with mixed-voltage subsystems |
| Low on-state resistance | RON ≤ 5Ω typical at 3.3V - minimizes insertion loss and maintains signal rise/fall times |
| Functionally equivalent to QS3800 | Direct drop-in replacement for legacy IDT QS3800 in QSOP-24 footprint with identical pinout and timing |
Applications
| Backplane Bus Isolation | Hot-Swap Module Interface |
|---|---|
Use Scenario: Isolating control and data lines between main chassis and plug-in daughter cards in telecom rack systems. IC Role / Device Role / Timing Role: Bidirectional bus switch enabling/disabling 10-bit parallel paths under firmware control via OE. Use Value: Prevents bus contention during card insertion/removal and eliminates need for external pull-ups or series resistors. | Use Scenario: Connecting hot-pluggable peripheral modules (e.g., sensor pods, I/O expanders) to a powered-backplane host. IC Role / Device Role / Timing Role: Precharging B-port lines to BIASV before connection to suppress ground bounce and supply droop. Use Value: Reduces live-insertion transients below 150mV, meeting IEC 61000-4-2 immunity thresholds without added filtering. |
| 3.3V High-Speed Interconnect | Legacy System Voltage Translation |
Use Scenario: Routing high-frequency address/data signals between 3.3V ASICs and FPGAs in industrial controllers. IC Role / Device Role / Timing Role: Low-RON, sub-0.25ns propagation delay switch preserving signal integrity on 100+ MHz buses. Use Value: Enables clean edge transitions with <5Ω channel resistance - avoids timing skew and duty-cycle distortion. | Use Scenario: Integrating newer 3.3V peripherals into older 5V systems using level-shifting interface logic. IC Role / Device Role / Timing Role: Over-voltage tolerant I/O allowing B-port to accept 5V signals while A-port operates at 3.3V. Use Value: Eliminates need for discrete level shifters or clamping diodes - reduces BOM count and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74CBTLV6800PGG | TSSOP-24 package (PGG24); same electrical specs, 0.65mm pitch vs QSOP's 0.635mm | Higher density layout; requires rework of land pattern and stencil design | Select for space-constrained PCBs where thermal performance and solder joint reliability are prioritized |
| SN74CBTLV6800PWR | Texas Instruments variant; identical function, pinout, and DC specs; differs in ESD rating (1500V HBM vs 2000V) | Validated in TI-specific automotive qualification flow; not rated for extended industrial temp range beyond 85°C | Choose when sourcing from TI distribution channels or requiring TI-specific PPAP documentation |
Compared with 74CBTLV6800QG, the PGG variant offers improved thermal dissipation in TSSOP but demands layout revision, while the SN74CBTLV6800PWR provides supply chain diversification with minor ESD margin reduction and no industrial-grade temperature validation.
Availability
74CBTLV6800QG is available at Aetrix Electronics and suitable for backplane isolation, hot-swap module interfaces, and 3.3V high-speed interconnect applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for 74CBTLV6800QG 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, analog, power, and connectivity solutions for automotive, industrial, infrastructure, and IoT applications.
The 74CBTLV6800QG belongs to Renesas' legacy IDT logic portfolio, designed specifically for high-speed, low-noise bus switching in industrial and telecom systems requiring live-insertion resilience and mixed-voltage interoperability.
FAQ
What is the recommended BIASV voltage for 74CBTLV6800QG in a 3.3V system?
For a 3.3V system, BIASV should be set between 1.3V and 3.3V - commonly tied to VCC (3.3V) or mid-rail (1.65V) depending on noise goals. At 3.3V BIASV, the precharge minimizes ground bounce during hot insertion; at 1.65V, it reduces static current draw while maintaining sufficient noise margin. The 74CBTLV6800QG datasheet confirms stable operation across this full range with no derating.
Does 74CBTLV6800QG require external pull-up resistors on the OE pin?
Yes - OE must be pulled up to VCC through an external resistor to ensure high-impedance state during power-up or brownout. The minimum value depends on the driver's sink capability; Renesas recommends ≥10kΩ for standard CMOS drivers. Without this, the 74CBTLV6800QG may briefly enable during startup, causing bus contention. This requirement is explicitly stated in the 74CBTLV6800QG functional description.
Can 74CBTLV6800QG operate with VCC = 2.5V and still meet timing specifications?
Yes - the 74CBTLV6800QG is fully specified down to 2.3V VCC. At 2.5V, propagation delay remains ≤0.15ns (typical), RON is ≤7Ω, and IOFF stays ≤50µA. All AC/DC parameters in the datasheet include 2.5V test conditions, confirming guaranteed operation across the entire 2.3V–3.6V range. The 74CBTLV6800QG maintains full functionality without derating at 2.5V.
Is 74CBTLV6800QG pin-compatible with the older QS3800 device?
Yes - the 74CBTLV6800QG is functionally and pin-compatible with the QS3800 in QSOP-24 package (PCG24). Both share identical pinout, OE polarity, BIASV function, and 10-bit A/B port mapping. Renesas explicitly states "functionally equivalent to QS3800" in the 74CBTLV6800QG datasheet features section, enabling direct replacement without PCB modification.
What is the maximum continuous current per channel for 74CBTLV6800QG?
The 74CBTLV6800QG supports up to 128mA continuous channel current per A/B pair, as specified in Absolute Maximum Ratings. This rating applies under steady-state DC conditions with proper thermal management. Exceeding this limit risks permanent damage. The 74CBTLV6800QG's low RON (≤5Ω) ensures minimal self-heating at this current, making it suitable for driving moderate-load buses or terminated transmission lines.
74CBTLV6800QG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 74CBTLV
- Package/Case:
- 24-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Bus Switch
- Circuit:
- -
- 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
74CBTLV6800QG FAQ
1.How can I place an order for 74CBTLV6800QG through Aetrix?
Please submit a Request for Quotation (RFQ) for 74CBTLV6800QG 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 74CBTLV6800QG reliable?
The price and inventory of 74CBTLV6800QG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74CBTLV6800QG is usually 5 days.
3.What payment methods are accepted for 74CBTLV6800QG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74CBTLV6800QG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74CBTLV6800QG?
74CBTLV6800QG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74CBTLV6800QG 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 74CBTLV6800QG?
For technical support, including 74CBTLV6800QG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74CBTLV6800QG requirements.
6.How does Aetrix verify that 74CBTLV6800QG is sourced from the original manufacturer or authorized distributors?
All 74CBTLV6800QG 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 74CBTLV6800QG meets industry standards.
7.What is the process for return or replacement of 74CBTLV6800QG?
All 74CBTLV6800QG units undergo pre-shipment inspection (PSI). If there is an issue with 74CBTLV6800QG, 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 74CBTLV6800QG part is unused and in its original packaging.
Return procedure for 74CBTLV6800QG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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