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NXP Semiconductors 74CBTLVD3861DK,118
- Part No.:
- 74CBTLVD3861DK,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
74CBTLVD3861DK,118.pdf
- Description:
- IC BUS SWITCH 10 X 1:1 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,617
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Product details
Overview
74CBTLVD3861DK,118 from Nexperia is a 10-bit 3.3 V to 1.8 V level-translating bus switch in SSOP24 package, featuring active-Low output enable (OE), 4 Ω ON-state resistance, and IOFF partial power-down support. It enables bidirectional signal routing between 3.3 V logic domains and 1.8 V I/O interfaces in high-speed memory and processor interconnects.
For engineers reviewing the 74CBTLVD3861DK,118 datasheet, 74CBTLVD3861DK,118 pinout, 74CBTLVD3861DK,118 application, or 74CBTLVD3861DK,118 equivalent, key selection criteria include its 3.0–3.6 V supply range, −40 °C to +125 °C operating temperature, Schmitt-triggered OE input, and JEDEC JESD8-B/JESD36 compliance for 3.3 V systems.
Technical Context
The 74CBTLVD3861DK,118 implements a CMOS-based analog bus switch architecture with rail-to-rail pass capability and no internal level-shifting circuitry-translation occurs inherently via voltage domain isolation between A and B ports. Its IOFF functionality ensures sub-10 µA leakage when VCC = 0 V, enabling hot-insertion and partial power-down in mixed-voltage backplanes.
Schmitt-trigger action on the OE input guarantees robust noise immunity across the full 3.0–3.6 V VCC range, while dynamic performance includes ≤0.22 ns propagation delay (An↔Bn), ≤6.0 ns enable time, and 575 MHz −3 dB bandwidth in ON-state-critical for DDR2/DDR3 address/control bus applications requiring minimal signal degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 3.0 V to 3.6 V - supports standard 3.3 V LVTTL/LVCMOS systems without regulation overhead |
| Level translation | 3.3 V ↔ 1.8 V bidirectional - enables direct interface between legacy 3.3 V controllers and modern 1.8 V memory or FPGA I/O banks |
| ON resistance | Typ. 3.7 Ω at 3.3 V - ensures <100 mV voltage drop at 24 mA per channel, preserving signal integrity in high-drive buses |
| IOFF leakage | ±50 µA max at VCC = 0 V - prevents back-powering of powered-down rails during system sleep or hot-swap events |
| Operating temperature | −40 °C to +125 °C - qualified for under-hood automotive ECUs and industrial control modules |
| ESD protection | HBM >2000 V, CDM >1000 V - meets AEC-Q100 stress requirements for production-grade automotive PCBs |
| Propagation delay | ≤0.22 ns (An↔Bn) - preserves timing margins in high-frequency address/data strobes up to 500 MHz |
Pinout & Package
74CBTLVD3861DK,118 uses the SSOP24 (SOT556-1) package: plastic shrink small outline, 24 leads, 3.9 mm body width, 0.635 mm lead pitch, 1.73 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | nc | No-connect - electrically isolated; no PCB trace or thermal pad required |
| 2–11 | A1–A10 | Data port A inputs/outputs - connect to 3.3 V domain (e.g., CPU address bus) |
| 12 | GND | Ground reference - must be low-impedance plane for signal return and ESD discharge path |
| 13–22 | B1–B10 | Data port B inputs/outputs - connect to 1.8 V domain (e.g., LPDDR2 SDRAM interface) |
| 23 | OE | Active-Low output enable - Schmitt-triggered; tie to VCC via pull-up for power-up high-impedance safety |
| 24 | VCC | Positive supply - only powers internal logic; no current supplied to A/B ports (passive switch) |
Key Features
| Feature | Design Value |
|---|---|
| 3.3 V to 1.8 V level translation | Enables seamless interoperability between legacy 3.3 V microcontrollers and next-gen 1.8 V peripherals without external translators or level-shifter ICs |
| IOFF partial power-down | Blocks current flow between A and B ports when VCC = 0 V, preventing backfeeding and enabling safe insertion into live backplanes |
| Schmitt-trigger OE input | Accepts slow-rising control signals (up to 200 ns/V) without oscillation-ideal for GPIO-driven enable lines with RC filtering |
| 4 Ω typical ON resistance | Minimizes insertion loss and timing skew across all 10 channels, supporting deterministic signal propagation in synchronous buses |
| JEDEC JESD8-B compliance | Guarantees interoperability with industry-standard 3.3 V LVTTL logic families, simplifying qualification in telecom and computing platforms |
Applications
| Memory Interfacing | Processor Bus Expansion |
|---|---|
Use Scenario: Connecting a 3.3 V ARM Cortex-A9 MPCore processor to 1.8 V LPDDR2 SDRAM in an automotive infotainment head unit. IC Role / Device Role / Timing Role: Bidirectional level-translating bus switch for address, command, and control lines (not data bus), ensuring timing-critical setup/hold compliance. Use Value: Eliminates need for discrete MOSFET translators or dual-supply buffers, reducing BOM count by 3+ components and PCB area by >12 mm². | Use Scenario: Extending the 3.3 V peripheral bus of an industrial PLC CPU to drive 1.8 V I/O expansion modules over a 15 cm backplane trace. IC Role / Device Role / Timing Role: Hot-pluggable bus isolator with IOFF, allowing module insertion/removal without powering down the main controller. Use Value: Enables field-serviceable modular design with zero system downtime-no software reset or configuration reload required. |
| FPGA I/O Bridging | Test Equipment Signal Routing |
Use Scenario: Interfacing a 3.3 V Xilinx Spartan-6 FPGA configuration interface to 1.8 V flash memory and debug JTAG pins. IC Role / Device Role / Timing Role: Level translator for non-critical configuration and debug signals where speed is secondary to voltage compatibility. Use Value: Avoids dedicated level-shifter ICs with higher quiescent current (>10 µA), extending battery life in portable test fixtures by >8 hours. | Use Scenario: Automated test equipment (ATE) switching matrix routing 3.3 V pattern generator outputs to 1.8 V DUT inputs during functional validation. IC Role / Device Role / Timing Role: Low-capacitance (CS(ON) = 9.0 pF), low-resistance signal path preserving edge fidelity for 200 MHz digital stimulus waveforms. Use Value: Maintains <1% rise-time degradation vs. direct connection, eliminating false fails in high-speed parametric testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3861PWR | TI part; 3.3 V only (no 1.8 V translation), higher RON (6 Ω typ), no IOFF, −40 °C to +85 °C only | Limited to single-voltage 3.3 V systems; unsuitable for mixed-domain designs requiring power sequencing | Select only if interfacing identical 3.3 V domains and ambient temperature stays below 85 °C |
| 74LVC4052PW,118 | Nexperia dual 4-channel analog switch; 1.65–3.6 V supply, no built-in level translation, lower bandwidth (300 MHz) | Requires external biasing for level shift; better suited for analog multiplexing than digital bus switching | Choose when routing analog sensor signals or low-speed control lines-not for high-speed digital buses |
Compared with SN74CBT3861PWR and 74LVC4052PW,118, the 74CBTLVD3861DK,118 uniquely delivers guaranteed 3.3 V ↔ 1.8 V translation, IOFF-enabled hot-swap capability, and extended −40 °C to +125 °C operation-making it the sole fit for automotive and industrial mixed-voltage bus isolation.
Availability
74CBTLVD3861DK,118 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial PLC backplanes, FPGA configuration interfaces, and automated test equipment requiring stable component supply across extended temperature ranges.
Supply support for 74CBTLVD3861DK,118 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 leader in high-performance discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 with focus on automotive, industrial, computing, and consumer markets.
The 74CBTLVD3861DK,118 belongs to Nexperia's CBTLV logic family-designed specifically for low-latency, low-leakage voltage translation in high-reliability embedded systems demanding robust power sequencing and mixed-voltage interoperability.
FAQ
What is the maximum operating frequency supported by the 74CBTLVD3861DK,118?
The 74CBTLVD3861DK,118 supports a −3 dB bandwidth of 575 MHz in ON-state, verified at 3.3 V supply and 50 Ω load. This enables reliable operation with digital signals up to 500 MHz clock rates, such as DDR2 address/command buses. Propagation delay remains ≤0.22 ns, preserving timing margins in high-speed synchronous systems.
Does the 74CBTLVD3861DK,118 require external pull-up resistors on the OE pin?
Yes-the 74CBTLVD3861DK,118 datasheet specifies that OE must be tied to VCC via a pull-up resistor during power-up/down to ensure high-impedance OFF-state. The minimum resistor value depends on the driver's sink capability; typical values range from 10 kΩ to 100 kΩ for standard GPIO drivers.
Can the 74CBTLVD3861DK,118 translate from 1.8 V to 3.3 V as well as 3.3 V to 1.8 V?
Yes-the 74CBTLVD3861DK,118 is bidirectional: signals pass equally from A to B or B to A. When A port is driven at 1.8 V and B port connects to a 3.3 V receiver, the switch passes the 1.8 V logic levels unchanged-enabling true two-way level translation without direction control.
Is the 74CBTLVD3861DK,118 qualified for automotive applications?
Yes-the 74CBTLVD3861DK,118 is rated for −40 °C to +125 °C operation and meets AEC-Q100 stress test requirements for ESD (HBM >2000 V, CDM >1000 V). While not formally AEC-Q100 certified as a complete device, its specification and test data align with automotive-grade reliability expectations for non-safety-critical modules.
What is the purpose of the 'nc' pin (pin 1) on the 74CBTLVD3861DK,118 SSOP24 package?
Pin 1 of the 74CBTLVD3861DK,118 is marked 'nc' (not connected) and has no electrical function. It is a mechanical placeholder with no internal bond wire or silicon connection. The datasheet explicitly states there is no requirement to solder this pad-leaving it floating or connecting it to GND is acceptable but provides no electrical benefit.
74CBTLVD3861DK,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 24-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Bus Switch
- Circuit:
- 10 x 1:1
- Independent Circuits:
- 1
- 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:
- 24-SSOP
74CBTLVD3861DK,118 FAQ
1.How can I place an order for 74CBTLVD3861DK,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74CBTLVD3861DK,118 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 74CBTLVD3861DK,118 reliable?
The price and inventory of 74CBTLVD3861DK,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74CBTLVD3861DK,118 is usually 5 days.
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74CBTLVD3861DK,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74CBTLVD3861DK,118 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 74CBTLVD3861DK,118?
For technical support, including 74CBTLVD3861DK,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74CBTLVD3861DK,118 requirements.
6.How does Aetrix verify that 74CBTLVD3861DK,118 is sourced from the original manufacturer or authorized distributors?
All 74CBTLVD3861DK,118 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 74CBTLVD3861DK,118 meets industry standards.
7.What is the process for return or replacement of 74CBTLVD3861DK,118?
All 74CBTLVD3861DK,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74CBTLVD3861DK,118, 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 74CBTLVD3861DK,118 part is unused and in its original packaging.
Return procedure for 74CBTLVD3861DK,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74CBTLVD3861DK,118 Tags
-
SN74HC138DR
Texas Instruments
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TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
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74CBTLV3257PW,118
Nexperia USA Inc.
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SN74CBTLV3257PWR
Texas Instruments
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74CBTLV3257GUX
Nexperia USA Inc.
-
74HC154BQ,118
Nexperia USA Inc.
-
P3S0200GMX
NXP USA Inc.
-
SN74CB3Q3245PWR
Texas Instruments
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SN74CB3Q3257RGYR
Texas Instruments
-
TCA9543APWR
Texas Instruments
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TCA9546APWR
Texas Instruments
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SN74HC138N
Texas Instruments
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