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Nexperia USA Inc. 74CBTLV3126BQ-Q10X
- Part No.:
- 74CBTLV3126BQ-Q10X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74CBTLV3126BQ-Q10X.pdf
- Description:
- IC BUS SWITCH 1 X 1:1 14DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,900
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Product details
Overview
74CBTLV3126BQ-Q10X from Nexperia is an automotive-qualified 4-bit CMOS bus switch with independent output enable inputs (1OE–4OE), 5 Ω typical ON-resistance at 3.3 V, rail-to-rail signal switching, and IOFF partial power-down protection. It operates from 2.3 V to 3.6 V across –40 °C to +125 °C and is used in high-speed data path isolation within automotive infotainment backplanes and ADAS sensor interface modules.
For engineers reviewing the 74CBTLV3126BQ-Q10X datasheet, 74CBTLV3126BQ-Q10X pinout, 74CBTLV3126BQ-Q10X application, or 74CBTLV3126BQ-Q10X equivalent, key selection criteria include guaranteed sub-0.31 ns propagation delay at 3.3 V, Schmitt-triggered OE inputs for noise immunity, DHVQFN14 package with side-wettable flanks for AOI-compatible solder joint inspection, and AEC-Q100 Grade 1 qualification for under-hood deployment.
Technical Context
This device implements four independent bidirectional analog/digital bus switches, each controlled by a dedicated OE input. Each switch exhibits rail-to-rail conduction with no level-shifting function-signal integrity is preserved across full VCC range (2.3 V–3.6 V) without distortion or threshold offset.
The IOFF circuitry actively disables all switches and limits leakage to ±50 μA when VCC = 0 V, enabling safe hot-insertion and partial power-down in multi-rail automotive subsystems. Schmitt-trigger action on all OE inputs ensures robust timing margin against slow-rising control signals across the entire temperature and voltage range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ON-resistance (RON) | Typ. 4.0 Ω at VCC = 3.3 V, ISW = 64 mA - enables low-loss signal routing with <10 mV drop at 100 mA per channel |
| Propagation delay (tpd) | Max 0.31 ns at VCC = 3.0–3.6 V - supports >1 GHz digital signal integrity in high-speed interconnects |
| Enable/disable time (ten/tdis) | Max 6.0 ns at VCC = 3.0–3.6 V - allows precise timing control for dynamic bus arbitration |
| Supply voltage range | 2.3 V to 3.6 V - compatible with 2.5 V and 3.3 V automotive logic domains without level shifters |
| Operating temperature | –40 °C to +125 °C - qualified for engine bay and transmission control unit environments |
| IOFF leakage current | ±50 μA at VCC = 0 V - prevents backflow damage during power sequencing in mixed-supply systems |
| ESD rating (HBM) | >2000 V - meets automotive board-level ESD robustness requirements per ISO 10605 |
Pinout & Package
DHVQFN14 (SOT762-1) package: 2.5 × 3.0 × 0.85 mm body, 14 terminals, side-wettable flanks for automated optical inspection of solder joints. Exposed thermal pad (pin 1 index area) may be left floating or connected to GND; no electrical requirement to solder.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 4OE, 10OE, 13OE | Output enable input | Active-HIGH control per switch; Schmitt-triggered for noise immunity across full VCC and temperature range |
| 1A, 2A, 3A, 4A | Data I/O port A | Bidirectional signal terminal; rail-to-rail conduction with no DC bias dependency |
| 1B, 2B, 3B, 4B | Data I/O port B | Bidirectional signal terminal; electrically identical to port A; fully symmetric switching path |
| GND (Pin 7) | Ground reference | 0 V return for all internal circuitry and I/O; decoupling capacitor placement critical for noise suppression |
| VCC (Pin 14) | Power supply | Primary supply for switch core and OE logic; must be stabilized within ±5 % for specified RON and timing |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from –40 °C to +125 °C ambient, including lifetime reliability testing per stress conditions |
| IOFF partial power-down | Prevents damaging backflow current when VCC = 0 V, enabling safe insertion into live backplanes |
| Rail-to-rail analog switching | Supports full-swing digital and analog signals (0 V to VCC) without clipping or distortion |
| Side-wettable flanks (DHVQFN) | Enables 100 % automated optical inspection (AOI) of solder joints on bottom-terminated packages |
| Low ON-capacitance (14.3 pF) | Minimizes signal loading and crosstalk in high-frequency parallel bus applications |
Applications
| Automotive Infotainment Backplane | ADAS Camera Sensor Interface |
|---|---|
|
Use Scenario: Isolating LVDS or MIPI D-PHY data lanes between SoC and display/touch controller during system sleep mode. IC Role / Device Role / Timing Role: Bidirectional bus switch enabling dynamic channel enable/disable without signal degradation or DC blocking. Use Value: Eliminates need for discrete FETs or level shifters while maintaining sub-0.3 ns propagation delay and <5 Ω ON-resistance for pixel clock integrity. |
Use Scenario: Multiplexing multiple camera sensor outputs onto shared image processor input channels. IC Role / Device Role / Timing Role: Low-latency, rail-to-rail analog switch providing glitch-free signal routing with independent OE control per lane. Use Value: Enables simultaneous activation of up to four camera streams with <6 ns enable/disable timing margin for frame synchronization. |
| Body Control Module (BCM) CAN Gateway | Electric Power Steering (EPS) Motor Driver Interface |
|
Use Scenario: Isolating diagnostic lines (K-line, UART) between microcontroller and external programming tools during firmware updates. IC Role / Device Role / Timing Role: High-immunity bus switch protecting MCU pins from ESD and overvoltage during hot-plug operations. Use Value: Schmitt-triggered OE inputs tolerate slow-rising debug signals; IOFF blocks backfeed during MCU reset sequences. |
Use Scenario: Routing PWM and fault feedback signals between motor driver IC and EPS ECU across isolated power domains. IC Role / Device Role / Timing Role: Signal path isolator preserving edge fidelity of 20 kHz PWM gate drive signals and real-time fault reporting. Use Value: 4.0 Ω RON ensures <20 mV voltage drop at 5 mA fault current; 14.3 pF CS(ON) avoids PWM edge rounding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-bit bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74CBTLV3126PW-Q100 | TSSOP14 package (4.4 mm width); higher thermal resistance (7.3 mW/K derating above 81 °C) | Suitable for PCBs with legacy TSSOP footprints but less optimal for space-constrained ADAS modules | Select when board layout rework is impractical and thermal load remains below 300 mW |
| SN74CBT3126QPWRQ1 | TI part; 6 Ω typical RON at 3.3 V; no side-wettable flanks; JEDEC MO-220 package variant | Lacks AOI-compatible terminations; requires manual solder joint inspection in automotive production | Choose only if existing TI design ecosystem mandates footprint compatibility and AOI is not required |
Compared with 74CBTLV3126BQ-Q10X, the PW-Q100 offers easier hand-soldering but inferior thermal performance, while the SN74CBT3126QPWRQ1 lacks side-wettable flanks-making the BQ-Q10X the only option supporting full AOI traceability in high-reliability automotive SMT lines.
Availability
74CBTLV3126BQ-Q10X is available at Aetrix Electronics and suitable for automotive infotainment backplanes, ADAS camera interfaces, and body control module diagnostics requiring stable component supply, AEC-Q100 compliance, and DHVQFN14 package support.
Supply support for 74CBTLV3126BQ-Q10X 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
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions optimized for automotive, industrial, and mobile applications.
The 74CBTLV series targets high-speed, low-power bus switching in automotive subsystems where signal integrity, power sequencing safety, and long-term reliability are mandatory.
FAQ
What is the maximum allowable voltage on A/B pins when VCC = 0 V?
The absolute maximum switch voltage rating is VCC + 0.5 V. When VCC = 0 V, the maximum allowable voltage on A/B pins is +0.5 V. Exceeding this risks permanent damage due to violation of the Absolute Maximum Rating System per IEC 60134. IOFF protection does not extend beyond this limit.
Can 1OE–4OE be tied together and driven by a single microcontroller GPIO?
Yes-each OE input has ≤1 µA leakage at VCC = 3.6 V, so driving all four with one GPIO is electrically valid. However, doing so eliminates independent channel control. For applications requiring selective switching (e.g., multiplexing), separate OE routing preserves functional flexibility and avoids unintended signal coupling.
Is the exposed thermal pad (Pin 1 index area) required to be soldered to ground?
No. The datasheet explicitly states there is no electrical or mechanical requirement to solder the pad. If soldered, it must remain floating or connect to GND-never to VCC or signal nets. Its primary purpose is thermal relief, not electrical functionality.
Does the 74CBTLV3126BQ-Q10X support hot-swap operation in powered-backplane systems?
Yes-IOFF circuitry ensures OFF-state leakage remains ≤±50 µA when VCC = 0 V, preventing damaging backflow current during insertion. Combined with ±2000 V HBM ESD rating and Schmitt-triggered OE inputs, it meets automotive hot-swap requirements per ISO 10605 and OEM power sequencing specifications.
74CBTLV3126BQ-Q10X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74CBTLV
- Package/Case:
- 14-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Bus Switch
- Circuit:
- 1 x 1:1
- Independent Circuits:
- 4
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2.3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHVQFN (2.5x3)
74CBTLV3126BQ-Q10X FAQ
1.How can I place an order for 74CBTLV3126BQ-Q10X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74CBTLV3126BQ-Q10X 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 74CBTLV3126BQ-Q10X reliable?
The price and inventory of 74CBTLV3126BQ-Q10X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74CBTLV3126BQ-Q10X is usually 5 days.
3.What payment methods are accepted for 74CBTLV3126BQ-Q10X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74CBTLV3126BQ-Q10X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74CBTLV3126BQ-Q10X?
74CBTLV3126BQ-Q10X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74CBTLV3126BQ-Q10X 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 74CBTLV3126BQ-Q10X?
For technical support, including 74CBTLV3126BQ-Q10X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74CBTLV3126BQ-Q10X requirements.
6.How does Aetrix verify that 74CBTLV3126BQ-Q10X is sourced from the original manufacturer or authorized distributors?
All 74CBTLV3126BQ-Q10X 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 74CBTLV3126BQ-Q10X meets industry standards.
7.What is the process for return or replacement of 74CBTLV3126BQ-Q10X?
All 74CBTLV3126BQ-Q10X units undergo pre-shipment inspection (PSI). If there is an issue with 74CBTLV3126BQ-Q10X, 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 74CBTLV3126BQ-Q10X part is unused and in its original packaging.
Return procedure for 74CBTLV3126BQ-Q10X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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