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Nexperia USA Inc. CBTD3384PW,118
- Part No.:
- CBTD3384PW,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
CBTD3384PW,118.pdf
- Description:
- IC BUS SWITCH 5 X 1:1 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,816
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Product details
Overview
CBTD3384PW,118 from Nexperia is a 10-bit dual 5-pole bus switch IC designed for bidirectional 5 V ↔ 3.3 V level shifting, featuring two independent active-low output enables (1OE, 2OE), 5 Ω typical ON resistance, IOFF partial power-down support, and operation from −40 °C to +85 °C. It interfaces TTL-level buses in mixed-voltage systems such as legacy 5 V microcontrollers communicating with 3.3 V peripherals.
For engineers reviewing the CBTD3384PW,118 datasheet, CBTD3384PW,118 pinout, CBTD3384PW,118 application, or CBTD3384PW,118 equivalent, key selection criteria include verified 5 V-to-3.3 V bidirectional translation capability, sub-7 Ω RON at 4.5 V supply, IOFF-enabled system power gating, 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). Each channel passes signals bidirectionally between A-port (1A1–1A5 / 2A1–2A5) and B-port (1B1–1B5 / 2B1–2B5) pins with no internal direction control logic.
Its IOFF circuitry ensures all switches enter high-impedance state when VCC = 0 V, preventing back-drive current during partial power-down. The device operates with TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and supports 5 V supply only - not 3.3 V supply - while translating signals across voltage domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 4.5 V to 5.5 V - mandates 5 V system rail; not 3.3 V operable. |
| ON Resistance (RON) | 5 Ω (typ) at 4.5 V, 64 mA - enables low-loss signal coupling with <100 mV drop at 20 mA. |
| Propagation Delay (tpd) | 0.25 ns (max) - supports >1 GHz data rates in high-speed parallel bus applications. |
| Enable/Disable Time | ten = 7.0 ns max, tdis = 5.3 ns max - ensures fast channel arbitration in dynamic bus sharing. |
| IOFF Support | Yes - blocks leakage current when VCC = 0 V, enabling safe hot-insertion and partial power-down. |
| ESD Protection | HBM >2000 V, CDM >1000 V - meets industrial I/O robustness requirements without external protection. |
| Operating Temperature | −40 °C to +85 °C - qualified for extended industrial ambient conditions. |
Pinout & Package
TSSOP24 package (SOT355-1): plastic thin shrink small outline, 24-pin, 4.4 mm body width, 0.65 mm pitch, 1.1 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13 | 1OE, 2OE | Active-low enable inputs - drive LOW to activate corresponding 5-channel switch bank. |
| 2, 5, 6, 9, 10 | 1B1–1B5 | B-port terminals for first 5-channel switch - bidirectionally connected to 1A1–1A5 when 1OE = LOW. |
| 3, 4, 7, 8, 11 | 1A1–1A5 | A-port terminals for first 5-channel switch - bidirectionally connected to 1B1–1B5 when 1OE = LOW. |
| 14, 17, 18, 21, 22 | 2A1–2A5 | A-port terminals for second 5-channel switch - bidirectionally connected to 2B1–2B5 when 2OE = LOW. |
| 15, 16, 19, 20, 23 | 2B1–2B5 | B-port terminals for second 5-channel switch - bidirectionally connected to 2A1–2A5 when 2OE = LOW. |
| 12 | GND | Ground reference for all signals and supply return - must be low-impedance connection. |
| 24 | VCC | 5 V supply input - powers internal switch FETs and IOFF circuitry; not tolerant of 3.3 V operation. |
Key Features
| Feature | Design Value |
|---|---|
| 5 V ↔ 3.3 V bidirectional level shifting | Enables direct interface between legacy 5 V logic and modern 3.3 V peripherals without external translators. |
| IOFF partial power-down | Prevents damaging back-current flow when VCC is off, supporting hot-swap and low-power sleep modes. |
| 5 Ω typical ON resistance | Minimizes voltage drop and timing skew across all 10 channels, preserving signal integrity in parallel buses. |
| TTL-compatible control inputs | Accepts standard 5 V TTL logic levels (VIH ≥ 2.0 V, VIL ≤ 0.8 V) for seamless integration with legacy controllers. |
| Latch-up immunity >100 mA | Meets JESD78 Class II requirements - eliminates risk of destructive latch-up under transient overvoltage. |
Applications
| PCI/ISA Bus Interface | Legacy Microcontroller Expansion |
|---|---|
Use Scenario: Interfacing a 5 V PCI slot with 3.3 V peripheral cards in industrial backplane systems. IC Role / Device Role / Timing Role: Bidirectional bus switch providing voltage-domain isolation and signal pass-through for AD[31:0], C/BE#[3:0], and PAR lines. Use Value: Eliminates need for discrete level-shifter arrays; maintains sub-nanosecond timing alignment across all 10 switched lines. |
Use Scenario: Connecting a 5 V 8051-based controller to 3.3 V SPI flash and UART transceivers on a compact embedded board. IC Role / Device Role / Timing Role: Dual-bank switch enabling independent enable control of address/data (1A/1B) and control (2A/2B) buses. Use Value: Allows selective power gating of peripheral subsystems via OE pins while maintaining signal continuity on active paths. |
| Memory Subsystem Bridging | FPGA I/O Expansion |
Use Scenario: Translating 5 V SRAM data/address bus to 3.3 V FPGA I/O banks in reconfigurable computing modules. IC Role / Device Role / Timing Role: Low-RON analog switch preserving setup/hold timing margins for asynchronous memory access cycles. Use Value: Achieves <5 Ω channel resistance across full temperature range, minimizing voltage droop during burst reads/writes. |
Use Scenario: Extending FPGA I/O count by routing 5 V test equipment signals through configurable 3.3 V logic domain. IC Role / Device Role / Timing Role: Level-shifting bus switch enabling FPGA to drive and sample 5 V DUT signals without level-shifter ICs. Use Value: Supports 0.25 ns propagation delay - critical for maintaining timing closure in high-speed boundary-scan or JTAG chains. |
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-switch architecture, but TI part uses different pinout (SO-24 vs TSSOP24) and has higher RON (7 Ω typ). | Requires PCB layout revision due to SOIC footprint; less suitable for space-constrained designs. | Select if SOIC mounting is preferred and 2 Ω higher RON is acceptable. |
| 74LVC4245APW | Directional 8-bit translator (not bidirectional bus switch); requires external direction control and has 3-state outputs. | Cannot replace CBTD3384 in true bidirectional bus applications without redesigning control logic. | Choose only for unidirectional data paths where direction is statically defined and 3-state buffering is needed. |
Compared with SN74CBT3384CPWR and 74LVC4245APW, CBTD3384PW,118 uniquely delivers pin-compatible bidirectional switching with lowest RON in TSSOP24, eliminating direction-control overhead and enabling drop-in replacement in legacy 5 V/3.3 V bus architectures.
Availability
CBTD3384PW,118 is available at Aetrix Electronics and suitable for industrial control backplanes, embedded microcontroller expansion interfaces, FPGA I/O bridging, and memory subsystem translation requiring stable component supply across long-lifecycle programs.
Supply support for CBTD3384PW,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 semiconductor expert delivering high-performance, reliable logic, discrete, and MOSFET solutions optimized for efficiency, miniaturization, and robustness in industrial and consumer applications.
CBTD3384 belongs to Nexperia's CBT-family of high-speed bus switches, engineered specifically for low-latency, bidirectional voltage-level translation in mixed-supply digital systems.
FAQ
Can CBTD3384PW,118 operate with a 3.3 V supply voltage?
No. The CBTD3384PW,118 requires a 4.5 V to 5.5 V supply (VCC) and is not functional at 3.3 V. Its internal switch FETs and IOFF circuitry are designed exclusively for 5 V operation, though it safely translates signals between 5 V and 3.3 V logic domains on its I/O ports.
Does CBTD3384PW,118 support unidirectional signal flow only?
No. It supports fully bidirectional signal flow on all 10 channels. Each switch path (e.g., 1A1 ↔ 1B1) conducts equally in both directions when enabled, with no internal direction control - ideal for data/address buses where signal direction changes dynamically.
What is the maximum capacitive load the CBTD3384PW,118 can drive?
The device is characterized up to 50 pF load capacitance (per Table 9), with propagation delay remaining ≤0.25 ns. Driving loads beyond 50 pF increases RC delay and may violate timing margins in high-speed applications; layout parasitics should be minimized accordingly.
Is CBTD3384PW,118 automotive qualified?
No. CBTD3384PW,118 is specified for industrial temperature range (−40 °C to +85 °C) and is not AEC-Q100 qualified. Nexperia explicitly states non-automotive qualification in its legal disclaimers, and the device lacks automotive-specific stress testing or failure-rate reporting.
CBTD3384PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74CBTD
- Package/Case:
- 24-TSSOP (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-TSSOP
CBTD3384PW,118 FAQ
1.How can I place an order for CBTD3384PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for CBTD3384PW,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 CBTD3384PW,118 reliable?
The price and inventory of CBTD3384PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CBTD3384PW,118 is usually 5 days.
3.What payment methods are accepted for CBTD3384PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CBTD3384PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CBTD3384PW,118?
CBTD3384PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CBTD3384PW,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 CBTD3384PW,118?
For technical support, including CBTD3384PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CBTD3384PW,118 requirements.
6.How does Aetrix verify that CBTD3384PW,118 is sourced from the original manufacturer or authorized distributors?
All CBTD3384PW,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 CBTD3384PW,118 meets industry standards.
7.What is the process for return or replacement of CBTD3384PW,118?
All CBTD3384PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with CBTD3384PW,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 CBTD3384PW,118 part is unused and in its original packaging.
Return procedure for CBTD3384PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CBTD3384PW,118 Tags
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SN74HC138DR
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TC7SB3157CFU,LF(CT
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74HC154BQ,118
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P3S0200GMX
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SN74HC138N
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