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NXP Semiconductors CBT3384DB,118
- Part No.:
- CBT3384DB,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- -
- Datasheet:
-
CBT3384DB,118.pdf
- Description:
- IC BUS SWITCH 10BIT 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,150
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Product details
Overview
CBT3384DB,118 from Nexperia is a 10-bit TTL-compatible bus switch IC organized as two independent 5-bit bidirectional switches (1A↔1B and 2A↔2B), featuring 5 Ω typical ON resistance, <0.25 ns propagation delay, and dual active-low output enables (1OE, 2OE) for selective port isolation in high-speed digital interconnects used in computing and industrial control backplanes.
For engineers reviewing the CBT3384DB,118 datasheet, CBT3384DB,118 pinout, CBT3384DB,118 application, or CBT3384DB,118 equivalent, this page delivers verified electrical parameters, SSOP24 package mapping, functional truth table behavior, ESD robustness (HBM >2000 V), and real-world use cases in bus isolation, level translation support, and hot-swap signal routing.
Technical Context
The CBT3384DB,118 implements dual 5-bit FET-based analog switches with TTL-compatible control inputs (VIL ≤ 0.8 V, VIH ≥ 2.0 V) and operates across −40 °C to +85 °C. Its low-impedance pass path (RON ≤ 7 Ω at 4.5 V, 64 mA) ensures minimal signal degradation during bidirectional data transfer between A and B ports.
Each switch block responds independently to its dedicated OE input: when nOE = LOW, the corresponding 5-bit path conducts; when nOE = HIGH, that path enters high-impedance OFF-state (Cio(off) ≤ 10 pF). No internal level shifting is provided - it is a pure passive switch, not a translator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Configuration | Two independent 5-bit bidirectional bus switches (1A↔1B, 2A↔2B) |
| ON Resistance (RON) | 5–7 Ω max at VCC = 4.5 V, enabling low-loss signal coupling without voltage drop |
| Propagation Delay (tpd) | ≤ 0.25 ns typical, supporting >1 GHz digital signal integrity in high-speed interconnects |
| ESD Protection | HBM >2000 V, CDM >1000 V - meets industrial handling requirements without external protection |
| Supply Voltage Range | 4.5 V to 5.5 V - compatible with standard 5 V TTL/CMOS logic rails |
| OFF-State Capacitance | ≤10 pF - minimizes crosstalk and loading on inactive bus segments |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial and embedded computing environments |
Pinout & Package
CBT3384DB,118 uses the SSOP24 (SOT340-1) package: plastic shrink small outline, 24 leads, body width 5.3 mm, lead pitch 0.65 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13 | 1OE, 2OE | Active-low enable inputs - drive LOW to connect respective 5-bit A↔B paths |
| 3, 4, 7, 8, 11 | 1A1–1A5 | Port A side of first 5-bit switch - bidirectional I/O with no direction control |
| 2, 5, 6, 9, 10 | 1B1–1B5 | Port B side of first 5-bit switch - electrically identical to 1A pins |
| 14, 17, 18, 21, 22 | 2A1–2A5 | Port A side of second 5-bit switch - isolated from first switch |
| 15, 16, 19, 20, 23 | 2B1–2B5 | Port B side of second 5-bit switch - supports independent enable control |
| 12 | GND | Ground reference for all signals and supply return path |
| 24 | VCC | +5 V supply input - powers internal switch FETs and control logic |
Key Features
| Feature | Design Value |
|---|---|
| Low ON-resistance switching | 5–7 Ω ensures <50 mV voltage drop at 100 mA, preserving TTL logic margins |
| TTL-compatible control interface | VIL ≤ 0.8 V / VIH ≥ 2.0 V allows direct connection to legacy 5 V microcontrollers and FPGAs |
| Latch-up immunity | Exceeds 100 mA per JESD78 - prevents destructive latch-up under transient overvoltage |
| Minimal OFF-state capacitance | ≤10 pF isolates inactive bus sections without degrading adjacent signal integrity |
| High-speed propagation | ≤0.25 ns tpd enables use in >1 Gbps parallel interfaces without timing skew penalties |
Applications
| PCI Express Slot Isolation | Industrial Backplane Bus Sharing |
|---|---|
Use Scenario: Isolating PCIe x1/x4 lanes during hot-plug insertion to prevent bus contention and signal corruption. IC Role / Device Role / Timing Role: Bidirectional switch enabling/disabling physical layer connectivity between host and add-in card without protocol intervention. Use Value: Prevents data corruption during hot-swap by decoupling unpowered devices while maintaining full 5 V TTL signal fidelity and sub-nanosecond timing alignment. |
Use Scenario: Sharing a common 5 V parallel bus among multiple microcontroller modules in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Selective bus segment isolation via independent OE controls, allowing time-multiplexed access without bus arbitration logic. Use Value: Eliminates need for tristate buffers or complex arbitration, reducing PCB area and firmware overhead while sustaining 100+ MHz bus clock rates. |
| Legacy Memory Interface Bridging | Test Access Port Multiplexing |
Use Scenario: Connecting older SRAM or EPROM devices with non-overlapping address windows to a modern SoC memory controller. IC Role / Device Role / Timing Role: Transparent bidirectional data/address path with zero added latency, controlled by chip-select derived OE signals. Use Value: Enables drop-in replacement of obsolete bus transceivers while preserving nanosecond-level timing budgets and eliminating level-shifter complexity. |
Use Scenario: Routing JTAG or SWD debug signals from a single test controller to multiple ASICs on a production test board. IC Role / Device Role / Timing Role: Low-capacitance signal multiplexer ensuring clean TCK/TMS/TDI waveform integrity across multiple device chains. Use Value: Maintains IEEE 1149.1 compliance by limiting added capacitance to ≤10 pF and propagation delay to ≤0.25 ns, avoiding signal rise-time degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBTD3384CPWR | Includes integrated level-shifting diodes; higher RON (8–10 Ω); requires external bias for level translation | Supports mixed-voltage domain bridging (e.g., 3.3 V ↔ 5 V); CBT3384DB,118 does not provide level shift | Select only if bidirectional voltage translation is required; otherwise CBT3384DB,118 offers lower RON and simpler biasing |
| 74LVC1G3157GW,125 | Single-pole double-throw (SPDT) 1-bit switch; 3.3 V only; RON ≈ 6 Ω; smaller SOT363 package | Not scalable to 10-bit operation; suited for point-to-point signal routing, not bus-wide isolation | Use for low-pin-count, low-voltage signal switching; CBT3384DB,118 remains optimal for multi-bit 5 V bus management |
Compared with SN74CBTD3384CPWR and 74LVC1G3157GW,125, the CBT3384DB,118 delivers superior 10-bit integration, lowest RON in 5 V operation, and native support for industrial temperature range - making it the preferred choice for high-fidelity, high-density 5 V bus isolation where level translation is unnecessary.
Availability
CBT3384DB,118 is available at Aetrix Electronics and suitable for industrial backplane bus sharing, PCIe slot isolation, legacy memory interface bridging, and test access port multiplexing requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for CBT3384DB,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 an industry-leading supplier of discrete, logic, and PowerMOS semiconductors, focused on automotive, industrial, computing, consumer, and wearable markets.
The CBT3384DB,118 belongs to Nexperia's high-speed bus switch product line, designed specifically for low-latency, low-distortion bidirectional signal routing in 5 V digital systems where timing integrity and signal fidelity are critical.
FAQ
What is the maximum operating voltage for CBT3384DB,118?
The CBT3384DB,118 has an absolute maximum supply voltage (VCC) of +7.0 V, but its recommended operating range is strictly 4.5 V to 5.5 V per the datasheet. Operating outside this window risks violating static characteristics such as VIH/VIL thresholds and may degrade RON stability or ESD performance. Always maintain VCC within 4.5–5.5 V for reliable CBT3384DB,118 functionality in production designs.
Does CBT3384DB,118 support level translation between different logic families?
No, the CBT3384DB,118 is a passive analog bus switch without internal level-shifting circuitry. It preserves signal voltage levels across the switch path - meaning a 5 V input appears as ~5 V on the output side. For true level translation (e.g., 3.3 V ↔ 5 V), consider the CBTD3384 variant, which integrates clamping diodes. The CBT3384DB,118 is intended for same-rail isolation only.
How many independent enable controls does CBT3384DB,118 provide?
The CBT3384DB,118 provides two independent active-low output enable inputs: 1OE (pin 1) controls the first 5-bit switch (1A1–1A5 ↔ 1B1–1B5), and 2OE (pin 13) controls the second 5-bit switch (2A1–2A5 ↔ 2B1–2B5). This allows granular, simultaneous, or staggered activation of either bus segment without affecting the other - a key feature for flexible bus partitioning in CBT3384DB,118 implementations.
What is the OFF-state leakage current specification for CBT3384DB,118?
The CBT3384DB,118 specifies an input leakage current (II) of ±1 µA maximum at VCC = 5.5 V and VI = GND or 5.5 V, across the full −40 °C to +85 °C operating range. This low leakage ensures minimal power draw and signal perturbation on disabled ports, critical for maintaining noise margins in high-density CBT3384DB,118-based bus architectures.
Is CBT3384DB,118 pin-compatible with other CBT3384 package variants?
Yes - the CBT3384DB,118 (SSOP24/SOT340-1), CBT3384D (SO24/SOT137-1), and CBT3384PW (TSSOP24/SOT355-1) share identical pin numbering and function mapping per the datasheet pin description table. Mechanical dimensions differ, but electrical behavior, pin roles, and layout footprint logic are fully consistent across all CBT3384 package variants, simplifying design reuse and migration.
CBT3384DB,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Circuit:
- -
- Independent Circuits:
- -
- Current - Output High, Low:
- -
- Voltage Supply Source:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
CBT3384DB,118 FAQ
1.How can I place an order for CBT3384DB,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for CBT3384DB,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 CBT3384DB,118 reliable?
The price and inventory of CBT3384DB,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CBT3384DB,118 is usually 5 days.
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CBT3384DB,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CBT3384DB,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 CBT3384DB,118?
For technical support, including CBT3384DB,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CBT3384DB,118 requirements.
6.How does Aetrix verify that CBT3384DB,118 is sourced from the original manufacturer or authorized distributors?
All CBT3384DB,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 CBT3384DB,118 meets industry standards.
7.What is the process for return or replacement of CBT3384DB,118?
All CBT3384DB,118 units undergo pre-shipment inspection (PSI). If there is an issue with CBT3384DB,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 CBT3384DB,118 part is unused and in its original packaging.
Return procedure for CBT3384DB,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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