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Nexperia USA Inc. CBTD3384PW,112
- Part No.:
- CBTD3384PW,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
CBTD3384PW,112.pdf
- Description:
- IC BUS SWITCH 5 X 1:1 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,146
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Product details
Overview
CBTD3384PW,112 from Nexperia is a dual 5-pole, single-throw bus switch IC designed for bidirectional 5 V to 3.3 V level shifting in high-speed digital interfaces. It features two independent active-low output enable inputs (1OE, 2OE), 10-bit signal routing capability, 5 Ω typical ON resistance at 4.5 V, and IOFF partial power-down support. It is used in mixed-voltage system interconnects such as CPU-to-peripheral data buses in industrial controllers.
For engineers reviewing the CBTD3384PW,112 datasheet, CBTD3384PW,112 pinout, CBTD3384PW,112 application, or CBTD3384PW,112 equivalent, key selection criteria include level-shifting integrity under TTL-compatible drive, propagation delay ≤0.25 ns, thermal operation from –40 °C to +85 °C, and TSSOP24 package compatibility with high-density PCB layouts.
Technical Context
The CBTD3384 implements two independent 5-channel analog bus switches, each controlled by a dedicated active-low enable input (1OE/2OE). Switch conduction is bidirectional and voltage-transparent, supporting true level translation without internal logic or direction control.
Its IOFF circuitry ensures leakage current remains below ±1 μA when VCC = 0 V, enabling safe hot-insertion and partial power-down operation. The device uses standard CMOS process technology with latch-up immunity >100 mA per JESD78 and ESD robustness exceeding 2000 V HBM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 4.5 V to 5.5 V - Ensures stable operation across standard 5 V rail tolerances and supports interface with legacy 5 V logic while driving 3.3 V loads. |
| ON Resistance (RON) | 5 Ω (typ) at 4.5 V, 64 mA - Minimizes voltage drop and signal distortion during high-current switching in data paths. |
| Propagation Delay (tpd) | 0.25 ns (max) - Enables use in >1 GHz data rate applications where timing skew must be sub-nanosecond. |
| Enable/Disable Time | ten = 7.0 ns, tdis = 5.3 ns (max) - Supports fast gating of data bursts without introducing setup/hold violations in synchronous systems. |
| Operating Temperature | –40 °C to +85 °C - Qualified for industrial-grade embedded systems including programmable logic controllers and motor drives. |
| IOFF Leakage | ±1 μA max at VCC = 0 V - Prevents back-powering of powered-down sections and enables safe board-level hot-swap capability. |
| ESD Protection | HBM >2000 V, CDM >1000 V - Reduces need for external protection components in factory-handled or field-serviceable equipment. |
Pinout & Package
TSSOP24 plastic thin shrink small outline package (SOT355-1); 24-pin, 4.4 mm body width, 0.65 mm lead pitch, 1.1 mm max height - optimized for automated SMT assembly and thermal dissipation in space-constrained industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 13 | Output Enable Input (active LOW) | Controls conduction of first 5-channel switch bank (1A1–1A5 ↔ 1B1–1B5); HIGH forces high-impedance OFF state. |
| 1A1–1A5 (pins 3,4,7,8,11) | Data I/O Port A (Channel Group 1) | Bidirectional signal path for first 5-bit bus segment; electrically identical to corresponding 1B pins when enabled. |
| 1B1–1B5 (pins 2,5,6,9,10) | Data I/O Port B (Channel Group 1) | Complementary port to 1A; forms 5 independent pass-through channels with 1A pins under 1OE control. |
| 2OE, 15 | Output Enable Input (active LOW) | Controls second 5-channel switch bank (2A1–2A5 ↔ 2B1–2B5); independent timing and logic from 1OE. |
| 2A1–2A5 (pins 14,17,18,21,22) | Data I/O Port A (Channel Group 2) | Second 5-bit bidirectional data path; isolated from Group 1 for dual-bus or redundant interface architectures. |
| 2B1–2B5 (pins 16,19,20,23,15) | Data I/O Port B (Channel Group 2) | Paired with 2A pins to complete second 5-bit level-shifting channel set; supports independent voltage domain bridging. |
| VCC, 24 | Positive Supply Voltage | Primary 5 V supply reference for internal switch biasing and IOFF circuitry; must be decoupled locally. |
| GND, 12 | Ground Reference | Common return path for all signal and supply currents; requires low-inductance connection to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| 5 V ↔ 3.3 V bidirectional level shifting | Enables direct interfacing between legacy 5 V microcontrollers and modern 3.3 V peripherals without external translators or resistive dividers. |
| IOFF partial power-down support | Prevents current backflow and maintains isolation when VCC is removed, critical for hot-plug and modular system designs. |
| 5 Ω typical ON resistance | Minimizes insertion loss and preserves signal edge integrity in high-speed parallel buses up to 100 MHz. |
| Latch-up immunity >100 mA | Guarantees robust operation under transient overvoltage or ground bounce conditions common in industrial environments. |
| TTL-compatible input thresholds | VIH ≥ 2.0 V and VIL ≤ 0.8 V allow reliable control from standard 5 V TTL outputs without level-shifting on enable lines. |
Applications
| Industrial PLC Backplane Interface | Embedded MCU Peripheral Expansion |
|---|---|
|
Use Scenario: Bridging 5 V CPU address/data bus to 3.3 V I/O expansion modules in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional level-shifting bus switch providing transparent signal routing with sub-nanosecond propagation delay. Use Value: Eliminates need for discrete resistor networks or separate level translators, reducing BOM count and PCB area while maintaining timing margins. |
Use Scenario: Enabling 3.3 V sensors and communication peripherals (e.g., SPI flash, UART transceivers) to connect directly to 5 V microcontroller GPIO banks. IC Role / Device Role / Timing Role: Dual-enable 10-bit analog switch isolating voltage domains while preserving signal fidelity and timing integrity. Use Value: Allows reuse of existing 5 V MCU firmware and layout without redesign; IOFF prevents power contention during sleep mode transitions. |
| Test Equipment Signal Routing | Legacy System Upgrades |
|
Use Scenario: Dynamic reconfiguration of test signal paths between 5 V DUT interfaces and 3.3 V measurement ASICs in automated test equipment. IC Role / Device Role / Timing Role: Fast-enable/disable bus switch supporting <7 ns enable timing for synchronized stimulus/response sequencing. Use Value: Enables precise timing-controlled signal gating without adding jitter or skew, improving test repeatability and measurement accuracy. |
Use Scenario: Retrofitting 3.3 V memory or FPGA configuration devices into aging 5 V industrial control hardware. IC Role / Device Role / Timing Role: Level-translating bus switch with guaranteed –40 °C to +85 °C operation and latch-up immunity for long-life deployments. Use Value: Extends service life of installed base without full system redesign; qualified for continuous operation in uncontrolled ambient environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3384CPWR | Same 10-bit dual-enable architecture but TI-specific pinout; RON = 6 Ω (typ), tpd = 0.25 ns, operates at 4.5–5.5 V. | Requires PCB layout revision due to different pin mapping (e.g., GND at pin 12 vs. pin 1 in TI version); identical thermal specs. | Select when sourcing from TI-authorized channels or when leveraging TI's WEBENCH® simulation tools for timing validation. |
| 74CBTLV3245PW,118 | NXP variant with identical SOT355-1 footprint; RON = 4.5 Ω (typ), tpd = 0.2 ns, IOFF supported, but only single OE control for all 8 bits. | Lacks independent dual-OE control - unsuitable for applications requiring asynchronous gating of two 5-bit segments. | Choose only for simpler 8-bit unidirectional or single-gated applications where dual enable is not required. |
Compared with SN74CBT3384CPWR and 74CBTLV3245PW,118, CBTD3384PW,112 uniquely provides dual independent OE inputs for segmented bus control, verified 5 Ω RON performance across temperature, and pinout alignment with Nexperia's industrial qualification standards.
Availability
CBTD3384PW,112 is available at Aetrix Electronics and suitable for industrial PLC backplanes, embedded MCU peripheral expansion, test equipment signal routing, and legacy system upgrades requiring stable component supply and long-term lifecycle assurance.
Supply support for CBTD3384PW,112 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 essential semiconductors for automotive, industrial, and consumer markets.
CBTD3384 belongs to Nexperia's Bus Switch family, engineered specifically for low-latency, bidirectional voltage-level translation in mixed-supply digital systems without compromising signal integrity or power efficiency.
FAQ
Does CBTD3384PW,112 support 3.3 V to 5 V level shifting in both directions?
Yes - it is a fully bidirectional analog bus switch. When enabled, signals pass transparently between 5 V and 3.3 V domains regardless of direction. Its voltage-transparent architecture means no internal logic or direction pin is required; level translation occurs inherently via the MOSFET switch characteristics and IOFF design.
Can CBTD3384PW,112 be used with 3.3 V supply instead of 5 V?
No - the device requires VCC = 4.5 V to 5.5 V for proper operation. Its internal switch biasing and IOFF circuitry are designed exclusively for 5 V rail operation. Using 3.3 V on VCC violates recommended operating conditions and will result in undefined switching behavior and potential damage.
What is the maximum capacitive load this device can drive reliably?
The datasheet specifies dynamic performance with 50 pF load capacitance and 500 Ω termination. For reliable operation beyond that, total node capacitance (including PCB trace, probe, and downstream inputs) should remain ≤75 pF to maintain sub-nanosecond propagation delay and avoid excessive rise/fall time degradation.
Is CBTD3384PW,112 qualified for automotive applications?
No - the device is specified for industrial temperature range (–40 °C to +85 °C) and carries no AEC-Q200 qualification. Nexperia explicitly states in its legal disclaimers that non-automotive qualified products are not suitable for safety-critical or automotive use, and no automotive stress testing has been performed.
CBTD3384PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74CBTD
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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-TSSOP
CBTD3384PW,112 FAQ
1.How can I place an order for CBTD3384PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for CBTD3384PW,112 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 CBTD3384PW,112 reliable?
The price and inventory of CBTD3384PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CBTD3384PW,112 is usually 5 days.
3.What payment methods are accepted for CBTD3384PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CBTD3384PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CBTD3384PW,112?
CBTD3384PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CBTD3384PW,112 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 CBTD3384PW,112?
For technical support, including CBTD3384PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CBTD3384PW,112 requirements.
6.How does Aetrix verify that CBTD3384PW,112 is sourced from the original manufacturer or authorized distributors?
All CBTD3384PW,112 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 CBTD3384PW,112 meets industry standards.
7.What is the process for return or replacement of CBTD3384PW,112?
All CBTD3384PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with CBTD3384PW,112, 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 CBTD3384PW,112 part is unused and in its original packaging.
Return procedure for CBTD3384PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CBTD3384PW,112 Tags
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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.
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74HC154BQ,118
Nexperia USA Inc.
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P3S0200GMX
NXP USA Inc.
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SN74CB3Q3245PWR
Texas Instruments
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SN74CB3Q3257RGYR
Texas Instruments
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TCA9543APWR
Texas Instruments
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TCA9546APWR
Texas Instruments
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SN74HC138N
Texas Instruments
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