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Nexperia USA Inc. 74CBTLVD3244BQ,115
- Part No.:
- 74CBTLVD3244BQ,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
74CBTLVD3244BQ,115.pdf
- Description:
- IC BUS SWITCH 4 X 1:1 20DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,709
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Product details
Overview
74CBTLVD3244BQ,115 from Nexperia is an 8-bit level-shifting bus switch with dual 4-bit output-enable control, designed for bidirectional voltage translation between 3.0 V and 3.6 V domains. It features two independent OE inputs (active LOW), 5 Ω typical ON-resistance, rail-to-rail switching, and IOFF partial power-down protection. It is used in high-speed memory/data bus isolation in industrial controllers and FPGA I/O expansion.
For engineers reviewing the 74CBTLVD3244BQ,115 datasheet, 74CBTLVD3244BQ,115 pinout, 74CBTLVD3244BQ,115 application, or 74CBTLVD3244BQ,115 equivalent, key selection criteria include ON-resistance ≤10 Ω at 125 °C, enable/disable timing under 8 ns, -40 °C to +125 °C operation, and DHVQFN20 package compatibility with AOI-capable solder joints.
Technical Context
This device implements a dual 4-channel single-pole single-throw (SPST) analog bus switch architecture with Schmitt-triggered OE inputs for noise immunity. Each OE controls four independent A↔B bidirectional paths, enabling selective isolation of data lanes without direction control logic.
IOFF circuitry actively disables all switches and blocks backflow current when VCC = 0 V, supporting hot-insertion and partial power-down systems. The rail-to-rail pass capability allows signal translation across full supply range without level-shifting biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 3.0 V to 3.6 V - defines strict 3.3 V domain operation; no 5 V tolerance. |
| ON resistance | Typ. 3.7 Ω, max 10.0 Ω at 125 °C - ensures <100 mV voltage drop at 10 mA per channel. |
| Enable time | Max 6.0 ns - enables sub-10 ns channel activation for high-speed burst transfers. |
| Disable time | Max 8.0 ns - guarantees fast bus release to prevent contention during state transitions. |
| OFF-state leakage | ±20 μA max at 125 °C - maintains signal integrity during isolation in powered-down subsystems. |
| Operating temperature | -40 °C to +125 °C - qualified for extended industrial and under-hood embedded applications. |
| -3 dB bandwidth | 575 MHz - supports >500 Mbps digital signaling without significant attenuation. |
Pinout & Package
DHVQFN20 package (SOT764-1): 2.5 × 4.5 × 0.85 mm body, side-wettable flanks for AOI, no leads, 20-terminal quad flat layout with exposed thermal pad (non-electrical, floating or GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-LOW enable inputs - each controls four A↔B channels; Schmitt trigger ensures noise margin ≥0.4 V. |
| 2, 4, 6, 8 | 1A1–1A4 | Port A data I/O for first 4-channel group - bidirectional, rail-to-rail compatible with 3.3 V logic. |
| 11, 13, 15, 17 | 2A1–2A4 | Port A data I/O for second 4-channel group - electrically isolated from first group by separate OE. |
| 18, 16, 14, 12 | 1B1–1B4 | Port B data I/O for first group - paired with 1A1–1A4; identical voltage handling and timing. |
| 9, 7, 5, 3 | 2B1–2B4 | Port B data I/O for second group - enables independent 4-bit bus segmentation per OE. |
| 10 | GND | Ground reference (0 V) - required for all internal logic and switch biasing. |
| 20 | VCC | Positive supply - powers internal logic and switch driver; IOFF active only when VCC = 0 V. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog switching | Supports full 0 V to VCC signal swing on both A and B ports - eliminates need for external biasing in level-shifted buses. |
| IOFF partial power-down | Blocks backflow current when VCC = 0 V - enables safe hot-swap and mixed-voltage system partitioning. |
| Schmitt-trigger OE inputs | Hysteresis ≥0.4 V at VCC = 3.3 V - rejects noise on enable lines in electrically noisy industrial environments. |
| DHVQFN20 with side-wettable flanks | Enables automated optical inspection of solder joints - improves manufacturing yield and field reliability verification. |
| ESD robustness | HBM >2000 V, CDM >1000 V - exceeds JEDEC JS-001/JS-002 Class 2/C3 - reduces board-level ESD protection component count. |
Applications
| Industrial PLC Backplane Isolation | FPGA I/O Expansion Interface |
|---|---|
Use Scenario: Isolating legacy 3.3 V sensor bus from FPGA-configurable I/O banks operating at same nominal voltage but different power domains. IC Role / Device Role / Timing Role: Bidirectional bus switch enabling dynamic routing of 8-bit parallel data streams while preventing ground loop currents. Use Value: Eliminates need for discrete MOSFETs or level translators; 5 Ω RON ensures <50 mV drop at 10 mA, preserving signal integrity across 10 cm PCB traces. |
Use Scenario: Expanding FPGA GPIO count via multiplexed 8-bit peripheral interfaces (e.g., SPI flash, I²C EEPROM, GPIO expanders). IC Role / Device Role / Timing Role: Low-latency (≤8 ns disable) channel selector that isolates unused peripherals to reduce capacitive loading on shared data lines. Use Value: 575 MHz -3 dB bandwidth supports 200+ MHz clocked interfaces; IOFF prevents leakage when FPGA reconfigures I/O banks. |
| Automated Test Equipment (ATE) Signal Routing | Medical Imaging Data Acquisition Module |
Use Scenario: Switching high-fidelity analog/digital test signals between DUT pins and measurement instruments in modular ATE racks. IC Role / Device Role / Timing Role: Precision analog switch providing low-distortion, low-crosstalk path selection with sub-10 ns settling. Use Value: 2.5 pF OFF-state capacitance minimizes signal coupling between adjacent channels; 9.0 pF ON-state capacitance preserves rise/fall times in 100 Mbps digital patterns. |
Use Scenario: Isolating ADC front-end analog signal paths from digital control logic in portable ultrasound or MRI subsystems. IC Role / Device Role / Timing Role: Voltage-domain barrier ensuring ADC reference stability during digital processor sleep/wake cycles. Use Value: IOFF leakage ≤50 μA at 125 °C prevents reference drift during thermal transients; -40 °C to +125 °C rating covers medical enclosure temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3244PWR | Higher max RON (12 Ω at 125 °C); TSSOP20 package; no side-wettable flanks. | Lacks AOI support; wider body (4.4 mm) limits high-density layouts. | Prefer for cost-sensitive, non-AOI production where thermal performance margin exists. |
| 74LVC2G66DP | Single-channel; 6 Ω RON; operates down to 1.65 V; no IOFF or Schmitt triggers. | Not scalable to 8-bit; unsuitable for partial power-down or noisy environments. | Only suitable for point-to-point isolation where dual OE and rail-to-rail are unnecessary. |
Compared with SN74CBT3244PWR and 74LVC2G66DP, the 74CBTLVD3244BQ,115 uniquely combines dual 4-bit OE control, side-wettable DHVQFN20 for AOI, and guaranteed IOFF at 125 °C - making it optimal for space-constrained, high-reliability industrial bus architectures requiring concurrent channel management and manufacturability assurance.
Availability
74CBTLVD3244BQ,115 is available at Aetrix Electronics and suitable for industrial PLC backplane isolation, FPGA I/O expansion interfaces, and automated test equipment signal routing requiring stable component supply across extended temperature ranges and AOI-compatible packaging.
Supply support for 74CBTLVD3244BQ,115 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 high-volume, high-reliability logic, analog, and discrete components, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
The 74CBTLVD3244 belongs to Nexperia's CBTLV family of low-voltage bus switches, engineered specifically for noise-immune, low-RON, hot-pluggable data path control in 3.3 V industrial and communications infrastructure.
FAQ
Does 74CBTLVD3244BQ,115 support 5 V tolerant inputs?
No. The device is strictly rated for 3.0 V to 3.6 V supply and input voltages. Absolute maximum input voltage is VCC + 0.5 V, so applying 5 V risks permanent damage. It is not 5 V tolerant and must be used only within its specified 3.3 V domain.
Can 1OE and 2OE be tied together for unified 8-bit control?
Yes. Connecting 1OE and 2OE simplifies control to a single active-LOW signal, enabling simultaneous switching of all eight channels. This configuration retains full functionality including IOFF and Schmitt-trigger noise immunity, and is explicitly supported in the functional description.
What is the thermal pad on the DHVQFN20 package intended for?
The exposed thermal pad (terminal 1 index area) has no electrical function. Per datasheet note, it may remain floating or be connected to GND - but must never be left unconnected if soldered, as unintended potential differences could cause leakage. It primarily aids heat dissipation in high-duty-cycle applications.
How does IOFF behave when VCC is ramping during power-up?
IOFF activates only when VCC = 0 V. During power-up, the device behaves normally once VCC reaches ~1.5 V; no special sequencing is required. IOFF does not engage during brown-out or slow ramp - it is a static zero-voltage condition feature, not a dynamic power-gating mechanism.
74CBTLVD3244BQ,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Bus Switch
- Circuit:
- 4 x 1:1
- Independent Circuits:
- 2
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DHVQFN (4.5x2.5)
74CBTLVD3244BQ,115 FAQ
1.How can I place an order for 74CBTLVD3244BQ,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74CBTLVD3244BQ,115 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 74CBTLVD3244BQ,115 reliable?
The price and inventory of 74CBTLVD3244BQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74CBTLVD3244BQ,115 is usually 5 days.
3.What payment methods are accepted for 74CBTLVD3244BQ,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74CBTLVD3244BQ,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74CBTLVD3244BQ,115?
74CBTLVD3244BQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74CBTLVD3244BQ,115 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 74CBTLVD3244BQ,115?
For technical support, including 74CBTLVD3244BQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74CBTLVD3244BQ,115 requirements.
6.How does Aetrix verify that 74CBTLVD3244BQ,115 is sourced from the original manufacturer or authorized distributors?
All 74CBTLVD3244BQ,115 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 74CBTLVD3244BQ,115 meets industry standards.
7.What is the process for return or replacement of 74CBTLVD3244BQ,115?
All 74CBTLVD3244BQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74CBTLVD3244BQ,115, 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 74CBTLVD3244BQ,115 part is unused and in its original packaging.
Return procedure for 74CBTLVD3244BQ,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74CBTLVD3244BQ,115 Tags
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