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Texas Instruments CYBUS3384SOC
- Part No.:
- CYBUS3384SOC
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
CYBUS3384SOC.pdf
- Description:
- BUS DRIVER, 5-BIT,
- Quantity:
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Inventory:5,898
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Product details
Overview
CYBUS3384SOC from Texas Instruments is a dual 5-bit bidirectional bus switch IC designed for high-speed, low-noise signal routing between isolated buses in mixed-voltage systems. It features zero propagation delay, 2 Ω on-resistance, bidirectional 3.3V/5.0V level translation, and power-off disable - enabling hot-swap capability in VME, dual-port RAM, and bus isolation applications.
For engineers reviewing the CYBUS3384SOC datasheet, CYBUS3384SOC pinout, CYBUS3384SOC application, or CYBUS3384SOC equivalent, key selection criteria include its 24-pin SOIC (DW) package, independent BE1/BE2 enable control per 5-bit group, sub-1 ns switching delays, and verified off-isolation of –66 dB at 50 MHz.
Technical Context
The CYBUS3384SOC implements two independent groups of five N-channel MOSFETs, each controlled by dedicated BE1 or BE2 inputs. Its symmetric structure enables true bidirectional signal flow with no direction pins or internal buffers - signals pass directly through the switch when enabled.
It operates across 4.0V–5.5V VCC, supports TTL/CMOS 3.3V and 5.0V I/O interfaces, and delivers <0.25 ns propagation delay (A→B), 1.5–6.5 ns turn-on/off delays (BE→A/B), and 1.5 pC typical charge injection - all critical for high-fidelity analog and digital bus switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual 5-bit bidirectional bus switch - two independent 5-bit channels (A0–A4/B0–B4 and A5–A9/B5–B9) |
| On Resistance (RON) | 2 Ω typical at VCC=4.75V, VIN=0V, ION=30 mA - ensures minimal voltage drop and DC drive integrity |
| Propagation Delay | 0.25 ns max (A→B) - contributes negligible timing overhead in high-speed data paths |
| Off Isolation | –66 dB at 50 MHz - suppresses crosstalk in sensitive analog or clock distribution applications |
| Voltage Translation | 3.3V ↔ 5.0V bidirectional - enables direct interface without external level shifters or diodes |
| Power-Off Disable | Zero current draw from I/O or control pins when VCC = 0V - prevents back-powering and supports hot insertion |
| ESD Rating | >2000 V (MIL-STD-883 Method 3015) - robust handling during board assembly and system maintenance |
Pinout & Package
Package: 24-pin SOIC (DW), 300-mil width, surface-mount. Pin pitch: 1.27 mm. Body dimensions: 15.4 mm × 7.5 mm × 2.35 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A9 | Bus A port - bidirectional I/O | 10-bit input/output terminal group; electrically symmetric - functions as input or output depending on enable state and driving side |
| B0–B9 | Bus B port - bidirectional I/O | 10-bit complementary bus port; directly connected to A0–A9 when corresponding BE is active |
| BE1 | Enable for A0–A4 / B0–B4 | Active-low TTL/CMOS-compatible control - activates lower 5-bit switch group |
| BE2 | Enable for A5–A9 / B5–B9 | Active-low TTL/CMOS-compatible control - activates upper 5-bit switch group |
| VCC | Positive supply | 4.0V–5.5V operation; powers internal logic and gate drivers; enables power-off disable behavior |
| GND | Ground reference | Signal and power return; required for ESD clamp functionality and proper threshold referencing |
Key Features
| Feature | Design Value |
|---|---|
| Zero propagation delay architecture | Eliminates added timing skew in synchronous bus systems - rise/fall times determined solely by driving source and load, not the switch |
| 2 Ω low on-resistance | Preserves signal integrity and DC drive strength in high-current VME and memory bus applications |
| Bidirectional 3.3V/5.0V translation | Enables seamless interoperation between legacy 5V TTL and modern 3.3V CMOS without external components or direction control |
| Power-off disable | Prevents back-powering and bus contention during live card insertion/removal - essential for modular industrial and telecom chassis |
| –66 dB off-isolation @ 50 MHz | Meets stringent crosstalk requirements in mixed-signal systems such as fast latch and selectable termination load designs |
Applications
| High-Speed Dual-Port RAM | Hot-Swappable Backplane Interface |
|---|---|
Use Scenario: Two processors (host + DSP) share a single SRAM bank via arbitration logic. IC Role / Device Role / Timing Role: CYBUS3384SOC acts as a transparent, low-latency bus switch that routes address/data between either processor and SRAM - replacing slower transceivers like SN74F244/F245. Use Value: Saves ≥10 ns per access vs. buffer-based solutions, enabling use of lower-cost, slower SRAM while maintaining system throughput. |
Use Scenario: Modular VME or CompactPCI cards are inserted/removed while system remains powered. IC Role / Device Role / Timing Role: CYBUS3384SOC isolates card-local buses from backplane during insertion, preventing ground bounce and supply loading. Use Value: Power-off disable ensures zero current path from live backplane to unpowered card - eliminates need for complex sequencing or isolation relays. |
| Selectable Termination Load | Fast Latch with Sub-1 ns Delay |
Use Scenario: Automatic test equipment dynamically adjusts termination impedance based on DUT configuration. IC Role / Device Role / Timing Role: CYBUS3384SOC replaces electromechanical relays to switch between multiple precision termination resistors on a high-speed bus. Use Value: Achieves microsecond-scale switching (vs. ms for relays), reduces power consumption, and improves long-term reliability over 10× relay count. |
Use Scenario: Ultra-fast data capture latches requiring minimal setup/hold time and no added noise. IC Role / Device Role / Timing Role: CYBUS3384SOC forms the core of a passive latch using stray or discrete capacitance to hold state after switch opening. Use Value: Delivers <1 ns propagation delay - 4–10× faster than 74ACT373 latches - with no added ground bounce or supply noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3384ADW | Same 24-pin SOIC package, identical pinout, 2.5 Ω RON, 0.25 ns tPLH - TI's direct functional successor with improved ESD (4 kV HBM) | Supports same 3.3V/5V translation and hot-swap use cases; rated for commercial temperature only (–40°C to +85°C) | Drop-in replacement where RoHS compliance and higher ESD tolerance are required; verify layout compatibility with DW footprint |
| 74LVC1G3157DBVR | Single-pole double-throw (SPDT) analog switch, 5-pin SOT-23, 6 Ω RON, 3.3V-only supply - not pin-compatible or functionally equivalent | Limited to single-channel, low-current signal routing; unsuitable for 10-bit bus or VME-level drive | Only viable for low-density, space-constrained analog switching - not a system-level alternative to CYBUS3384SOC |
Compared with CYBUS3384SOC, SN74CBT3384ADW offers enhanced manufacturability and ESD robustness in the same footprint, while 74LVC1G3157DBVR serves fundamentally different low-channel-count analog roles - neither replicates the dual-5-bit, high-drive, mixed-voltage bus isolation capability of CYBUS3384SOC.
Availability
CYBUS3384SOC is available at Aetrix Electronics and suitable for VME backplanes, dual-port memory subsystems, hot-swappable industrial modules, and high-isolation analog switching applications requiring stable component supply despite end-of-life status.
Supply support for CYBUS3384SOC 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
Texas Instruments is a global semiconductor leader focused on analog, embedded processing, and connectivity technologies, with deep expertise in high-performance logic and interface solutions.
The CYBUS3384SOC belongs to TI's legacy CBT (CrossBar Technology) bus switch family, engineered for ultra-low-delay, high-fidelity signal routing in mixed-voltage computing and instrumentation systems.
FAQ
What is the operating voltage range for CYBUS3384SOC?
CYBUS3384SOC operates from 4.0 V to 5.5 V on VCC. It supports bidirectional interfacing between 3.3 V and 5.0 V logic families without external level-shifting components. The device maintains specified performance - including 2 Ω on-resistance and <0.25 ns propagation delay - across this full supply range. Operation below 4.0 V is not guaranteed and may degrade switching characteristics or disable power-off disable functionality.
Does CYBUS3384SOC support hot-swap insertion into a live backplane?
Yes, CYBUS3384SOC supports hot-swap insertion due to its power-off disable feature. When VCC = 0 V, the device draws zero current from I/O or control pins and presents no current path to the power rails. This prevents back-powering, bus contention, or ground bounce during live card insertion - a key requirement for VME, CompactPCI, and modular industrial systems using CYBUS3384SOC.
Can CYBUS3384SOC be used for analog signal switching?
Yes, CYBUS3384SOC is qualified for small-signal analog applications. Its –66 dB off-isolation at 50 MHz, 1.5 pC typical charge injection, and low 2 Ω on-resistance make it suitable for precision analog multiplexing, selectable termination loads, and fast latch circuits. However, it is not optimized for rail-to-rail analog swing or high-frequency RF - use is limited to baseband and low-MHz analog signals where crosstalk and settling time are primary concerns.
What is the pinout compatibility between CYBUS3384SOC and CYBUS3384SOCT?
CYBUS3384SOC and CYBUS3384SOCT share identical 24-pin SOIC (DW) package pinouts and electrical specifications. Both use the same DW package drawing, pin numbering, and terminal assignments (A0–A9, B0–B9, BE1, BE2, VCC, GND). The "T" suffix in CYBUS3384SOCT denotes tape-and-reel packaging - functionally and mechanically interchangeable with CYBUS3384SOC in PCB layout.
Is CYBUS3384SOC RoHS compliant?
CYBUS3384SOC is marked as OBSOLETE in TI's packaging documentation with Eco Plan listed as "TBD" - meaning its RoHS or Pb-Free status was not formally defined prior to discontinuation. It predates mandatory RoHS enforcement and may contain leaded solder finish. For new designs, TI recommends SN74CBT3384ADW, which is RoHS-compliant and pin-compatible. Always verify material content via certified lab analysis if compliance is required.
CYBUS3384SOC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
CYBUS3384SOC FAQ
1.How can I place an order for CYBUS3384SOC through Aetrix?
Please submit a Request for Quotation (RFQ) for CYBUS3384SOC 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 CYBUS3384SOC reliable?
The price and inventory of CYBUS3384SOC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYBUS3384SOC is usually 5 days.
3.What payment methods are accepted for CYBUS3384SOC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYBUS3384SOC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYBUS3384SOC?
CYBUS3384SOC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYBUS3384SOC 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 CYBUS3384SOC?
For technical support, including CYBUS3384SOC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYBUS3384SOC requirements.
6.How does Aetrix verify that CYBUS3384SOC is sourced from the original manufacturer or authorized distributors?
All CYBUS3384SOC 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 CYBUS3384SOC meets industry standards.
7.What is the process for return or replacement of CYBUS3384SOC?
All CYBUS3384SOC units undergo pre-shipment inspection (PSI). If there is an issue with CYBUS3384SOC, 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 CYBUS3384SOC part is unused and in its original packaging.
Return procedure for CYBUS3384SOC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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