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Texas Instruments SN74CBT3384ADGVR
- Part No.:
- SN74CBT3384ADGVR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 24-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74CBT3384ADGVR.pdf
- Description:
- IC BUS SWITCH 5 X 1:1 24TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
SN74CBT3384ADGVR from Texas Instruments is a 10-bit FET bus switch IC with dual 5-bit independent channels, 5-Ω on-state resistance, TTL-compatible control inputs, and operation over −40°C to 85°C. It enables high-speed bidirectional signal routing in memory expansion, data multiplexing, and hot-swap I/O isolation applications.
For engineers reviewing the SN74CBT3384ADGVR datasheet, SN74CBT3384ADGVR pinout, SN74CBT3384ADGVR application, or SN74CBT3384ADGVR equivalent, this page delivers verified electrical specs, TVSOP-24 package details, propagation delay (0.25 ns at 5 V), enable/disable timing, and real-world use context for board-level integration and signal integrity validation.
Technical Context
The SN74CBT3384ADGVR implements two independent 5-bit FET-based analog switches controlled by separate OE inputs-1OE governs ports 1A/1B, 2OE governs 2A/2B. Each switch channel exhibits near-zero propagation delay due to low on-resistance (5–7 Ω) and minimal parasitic capacitance (Cio(OFF) = 4.5 pF).
It operates from 4 V to 5.5 V supply, supports TTL-level control thresholds (VIH = 2 V, VIL = 0.8 V), and maintains high-impedance isolation (>10⁹ Ω) when disabled. Absolute maximum ratings include −0.5 V to 7 V on all I/O pins and continuous channel current up to 128 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-state resistance (ron) | 5–7 Ω at VCC = 4.5 V, ensuring minimal voltage drop and signal attenuation during switching. |
| Propagation delay (tpd) | 0.25 ns at VCC = 5 V, CL = 50 pF - enables sub-nanosecond signal pass-through for high-speed buses. |
| Enable/disable time (ten/tdis) | 1.9–5.7 ns - supports rapid bus arbitration and dynamic reconfiguration without glitches. |
| Supply voltage range | 4 V to 5.5 V - compatible with standard 5-V TTL and mixed-voltage logic systems. |
| Input capacitance (Ci) | 4 pF per control input - reduces loading on upstream drivers and preserves timing margins. |
| Off-state capacitance (Cio) | 4.5 pF - minimizes crosstalk and capacitive coupling between isolated ports. |
| Operating temperature | −40°C to +85°C - qualified for industrial-grade embedded and communications equipment. |
Pinout & Package
SN74CBT3384ADGVR is housed in a 24-pin TVSOP (DGV) package, 4.4 mm × 6.6 mm footprint, 1.2 mm max height, 0.4 mm pitch, with exposed pad not present. Pin 1 located at top-left corner (Q1 quadrant), marked by index area per JEDEC MO-153.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE | Output-enable for first 5-bit switch (1A↔1B) | Active-low control: drives 1A–1B path into low-Z conduction when low; high-Z when high. |
| 2OE | Output-enable for second 5-bit switch (2A↔2B) | Independent active-low control enabling asynchronous bus partitioning or redundancy switching. |
| 1A1–1A5, 2A1–2A5 | Port A inputs/outputs (channel 1 & 2) | Bidirectional I/O terminals - no internal directionality; signal flow determined by external system topology. |
| 1B1–1B5, 2B1–2B5 | Port B inputs/outputs (channel 1 & 2) | Matched 1:1 pairing with Port A; identical electrical characteristics and routing capability. |
| VCC | Positive supply | Must be decoupled locally; powers internal FET gates and level-shifting circuitry for TTL compatibility. |
| GND | Ground reference | Common return for all switch paths and control logic; critical for noise immunity and on-resistance stability. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 5-bit switch banks | Enables simultaneous but isolated control of two data paths - e.g., CPU-to-peripheral and DMA-to-memory without interference. |
| 5-Ω typical on-state resistance | Minimizes insertion loss (<0.1 dB at 10 MHz) and preserves signal edge rate in 50-Ω systems. |
| TTL-compatible control inputs | Accepts standard 0.8 V / 2.0 V logic thresholds directly from legacy microcontrollers or FPGAs without level shifters. |
| Sub-nanosecond propagation delay | Eliminates timing budget penalties in high-frequency address/data buses operating up to 1 GHz effective bandwidth. |
| High off-state isolation | Guarantees >60 dB attenuation at 100 MHz between enabled and disabled ports - critical for EMI-sensitive instrumentation. |
Applications
| Memory Expansion Interface | Data Bus Multiplexing |
|---|---|
|
Use Scenario: Expanding SRAM or Flash capacity in microcontroller-based systems using shared address/data bus lines. IC Role / Device Role / Timing Role: Bidirectional bus switch isolating secondary memory bank during CPU access to primary bank; enables time-multiplexed addressing. Use Value: Eliminates need for tristate buffers or complex glue logic while maintaining full 5-V signal integrity and <1 ns timing skew across 10-bit paths. |
Use Scenario: Sharing a single 10-bit parallel interface among multiple peripherals (e.g., ADC, DAC, FPGA I/O) via software-controlled routing. IC Role / Device Role / Timing Role: Signal path selector that routes host processor data lines to one peripheral at a time without bus contention. Use Value: Reduces PCB layer count by replacing discrete logic or CPLDs; supports glitch-free switching with <6 ns enable/disable latency. |
| Hot-Swap I/O Isolation | Legacy System Bus Bridging |
|
Use Scenario: Safely inserting/removing add-on cards in industrial PLC backplanes while main system remains operational. IC Role / Device Role / Timing Role: High-impedance barrier inserted between live backplane bus and card edge connector until power sequencing completes. Use Value: Prevents bus lockup and voltage transients during insertion; withstands ±0.5 V undershoot/overshoot per absolute max ratings. |
Use Scenario: Interfacing modern 3.3-V FPGAs to legacy 5-V parallel peripherals (e.g., printers, displays, industrial sensors). IC Role / Device Role / Timing Role: Level-agnostic bidirectional switch - passes signals regardless of source/sink voltage, provided VCC = 5 V and I/O stay within −0.5 V to 7 V. Use Value: Avoids dedicated level translators; supports mixed-voltage domains with only passive termination required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBTD3384ADGVR | Includes power-down control (1OE/2OE tied to VCC via resistor) and higher drive strength; 3.3-V optimized with 3.6-V max VCC. | Designed for low-voltage portable systems; lacks 5-V tolerance on I/O pins. | Select when operating exclusively at 3.3 V and requiring lower ICC (1 μA vs. 3 μA) and enhanced ESD protection. |
| SN74LVC1G3157DCKR | Single-pole double-throw (SPDT) analog switch; 5-V tolerant, 6-Ω ron, but only 1 channel and no dual-OE architecture. | Suitable for point-to-point signal routing, not multi-bit bus isolation. | Choose for space-constrained designs needing only 1-bit switching; not scalable to 10-bit parallel paths. |
Compared with SN74CBTD3384ADGVR, the SN74CBT3384ADGVR offers broader 5-V system compatibility and higher I/O voltage tolerance; compared with SN74LVC1G3157DCKR, it provides true 10-bit parallel switching with independent channel control - essential for bus arbitration and memory mapping tasks.
Availability
SN74CBT3384ADGVR is available at Aetrix Electronics and suitable for industrial control interfaces, memory expansion modules, and hot-swap backplane designs requiring stable component supply and long-term lifecycle support.
Supply support for SN74CBT3384ADGVR 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 specializing in analog, embedded processing, and connectivity solutions, with decades of expertise in logic and interface ICs.
The SN74CBT3384ADGVR belongs to TI's CBT (Crosspoint Bus Transceiver) family, engineered for high-speed, low-latency digital signal routing in industrial, computing, and communications infrastructure.
FAQ
What is the maximum operating frequency supported by SN74CBT3384ADGVR?
The SN74CBT3384ADGVR does not specify a hard maximum clock frequency, but its 0.25 ns propagation delay and 4.5 pF off-capacitance enable reliable operation with digital signals up to 1 GHz effective bandwidth. System-level performance depends on trace impedance, load capacitance, and driver strength - the SN74CBT3384ADGVR itself introduces negligible timing degradation in properly terminated 50-Ω environments.
Can SN74CBT3384ADGVR operate with 3.3-V control signals while powered at 5 V?
Yes. The SN74CBT3384ADGVR features TTL-compatible inputs with VIH = 2.0 V min and VIL = 0.8 V max, so standard 3.3-V CMOS logic outputs (VOH ≈ 3.3 V, VOL ≈ 0 V) fully satisfy control thresholds when VCC = 5 V. No level shifter is needed, and the SN74CBT3384ADGVR tolerates input voltages up to 7 V.
Is SN74CBT3384ADGVR pin-compatible with other packages in the same family?
No. While functionally identical to SN74CBT3384A variants, the SN74CBT3384ADGVR uses the TVSOP-24 (DGV) package with 0.4 mm pitch and 4.4 mm × 6.6 mm body - distinct from SOIC (DW), SSOP (DB/DBQ), or TSSOP (PW) footprints. PCB layout must match DGV0024A mechanical outline; no pin-to-pin compatibility exists across packages.
Does SN74CBT3384ADGVR support hot insertion without external protection?
The SN74CBT3384ADGVR withstands −0.5 V to 7 V on all I/O pins per absolute maximum ratings and features high off-isolation (>60 dB), making it suitable for hot-swap applications. However, system-level protection (e.g., series resistors, TVS diodes) is still recommended for sustained fault conditions - the SN74CBT3384ADGVR alone does not provide surge or latch-up immunity beyond datasheet limits.
What is the thermal resistance (θJA) of SN74CBT3384ADGVR in its TVSOP package?
The SN74CBT3384ADGVR in TVSOP (DGV) package has a specified junction-to-ambient thermal resistance (θJA) of 86°C/W under standard JEDEC test conditions. This value assumes a 1-in² copper pad with 2 oz copper and no internal thermal vias; actual board-level θJA will improve with proper thermal land design and airflow.
SN74CBT3384ADGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74CBT
- Package/Case:
- 24-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Bus Switch
- Circuit:
- 5 x 1:1
- Independent Circuits:
- 2
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TVSOP
SN74CBT3384ADGVR FAQ
1.How can I place an order for SN74CBT3384ADGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74CBT3384ADGVR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of SN74CBT3384ADGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74CBT3384ADGVR is usually 5 days.
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Once your SN74CBT3384ADGVR 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 SN74CBT3384ADGVR?
For technical support, including SN74CBT3384ADGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74CBT3384ADGVR requirements.
6.How does Aetrix verify that SN74CBT3384ADGVR is sourced from the original manufacturer or authorized distributors?
All SN74CBT3384ADGVR 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 SN74CBT3384ADGVR meets industry standards.
7.What is the process for return or replacement of SN74CBT3384ADGVR?
All SN74CBT3384ADGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74CBT3384ADGVR, 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 SN74CBT3384ADGVR part is unused and in its original packaging.
Return procedure for SN74CBT3384ADGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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