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Nexperia USA Inc. 74CBTLVD3245PW,118
- Part No.:
- 74CBTLVD3245PW,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74CBTLVD3245PW,118.pdf
- Description:
- IC BUS SWITCH 8 X 1:1 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,157
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Product details
Overview
74CBTLVD3245PW,118 from Nexperia is an 8-bit bidirectional level-shifting bus switch with active-low output enable (OE), designed for voltage translation between 3.0 V and 3.6 V domains. It features 5 Ω typical ON-resistance, rail-to-rail switching on all A/B I/O ports, and IOFF partial power-down protection. Used in high-speed memory expansion interfaces where low-latency signal routing and backflow current prevention are critical.
For engineers reviewing the 74CBTLVD3245PW,118 datasheet, 74CBTLVD3245PW,118 pinout, 74CBTLVD3245PW,118 application, or 74CBTLVD3245PW,118 equivalent, key selection criteria include its 0.11 ns propagation delay at 3.3 V, -40 °C to +125 °C operating range, Schmitt-triggered OE input for noise immunity, and TSSOP20 package compatibility with space-constrained PCB layouts.
Technical Context
This device implements eight independent analog switches controlled by a single active-low OE input, enabling simultaneous channel enable/disable with sub-5 ns enable/disable timing. Each switch supports bidirectional signal flow with no internal direction control-voltage level translation occurs passively via rail-to-rail conduction when enabled.
The IOFF circuit ensures leakage remains below ±50 μA when VCC = 0 V, preventing destructive back-current during hot-insertion or partial system power-down. Schmitt-trigger action on OE provides hysteresis of ~0.4 V (VIH = 2.0 V, VIL = 0.9 V), tolerating slow-rising control signals without oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 3.0 V to 3.6 V - defines compatible host logic domains; not 5 V tolerant |
| ON resistance | 3.7 Ω typical (ISW = 64 mA) - enables <100 mV voltage drop at 100 mA load per channel |
| Propagation delay | 0.11 ns typical (An↔Bn) - supports >1 GHz data rates in point-to-point routing |
| Enable/disable time | 2.9 ns / 3.4 ns typical - allows tight timing alignment in synchronous bus gating |
| IOFF leakage | ±50 μA max (VCC = 0 V) - prevents backfeed damage during mixed-power-state operation |
| Operating temperature | -40 °C to +125 °C - qualified for under-hood industrial and telecom infrastructure use |
| ESD rating | HBM >2000 V, CDM >1000 V - meets JEDEC JS-001/JS-002 Class 2/C3 for board-level robustness |
Pinout & Package
TSSOP20 (SOT360-1) package: plastic thin shrink small outline, 20 leads, 4.4 mm body width, 0.65 mm pitch, 1.1 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (n.c.) | No connect | Unused pad; no electrical function or thermal requirement |
| 2–9 (A1–A8) | Data I/O port A | Bidirectional analog switch inputs/outputs; connect to source-side logic domain |
| 10 (GND) | Ground reference | 0 V return path for supply and signal integrity; must be low-impedance |
| 11–18 (B8–B1) | Data I/O port B | Bidirectional analog switch inputs/outputs; connect to sink-side logic domain |
| 19 (OE) | Output enable (active LOW) | Schmitt-triggered control; HIGH disables all channels into high-Z state |
| 20 (VCC) | Positive supply | 3.0–3.6 V only; powers internal bias and IOFF circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail switching | Full VCC-to-GND conduction range on A/B ports enables seamless level shifting without clamping diodes |
| IOFF partial power-down | Active when VCC = 0 V; blocks >99.9% of back-current to protect unpowered subsystems |
| Low ON-resistance | 3.7 Ω typical minimizes RC delay and signal attenuation in high-speed DDR or PCIe trace extensions |
| High noise immunity | Schmitt-triggered OE input rejects >400 mV of ground bounce or EMI on control line |
| Thermal enhancement | TSSOP20 package supports 500 mW total power dissipation with linear derating above 100 °C |
Applications
| Memory Expansion Interface | PCIe Gen2 Trace Extension |
|---|---|
|
Use Scenario: Adding LPDDR4 memory banks to SoC-based edge AI accelerators with mismatched I/O voltage domains. IC Role / Device Role / Timing Role: Bidirectional level translator between 3.3 V memory controller and 3.0 V DRAM modules; zero-latency pass-through gate. Use Value: Eliminates need for discrete level shifters per byte lane, reducing BOM count by 8× while maintaining <0.22 ns max skew across all 64-bit data paths. |
Use Scenario: Extending PCIe Gen2 differential pairs across split-board interconnects in modular server blades. IC Role / Device Role / Timing Role: Single-ended sideband signal routing (CLKREQ#, PERST#, WAKE#) between 3.3 V baseboard and 3.0 V mezzanine card. Use Value: Maintains signal integrity with <2.5 pF OFF-state capacitance and 575 MHz -3 dB bandwidth, avoiding jitter accumulation in reset and clock request paths. |
| Hot-Swappable Module Control | Industrial CAN FD Gateway Isolation |
|
Use Scenario: Enabling safe insertion/removal of field I/O modules in programmable logic controllers without powering down main CPU. IC Role / Device Role / Timing Role: Power-domain firewall for digital control lines (EN, MODE, ALERT); isolates powered-down modules from live backplane. Use Value: IOFF leakage <±50 μA prevents latch-up or false triggering during hot-swap transitions, meeting IEC 61000-4-2 Level 4 surge immunity requirements. |
Use Scenario: Level-shifting CAN FD transceiver control signals (TXD, RXD, STB) between 3.3 V microcontroller and 3.0 V isolated CAN PHY. IC Role / Device Role / Timing Role: Low-capacitance signal bridge ensuring <5 ns timing margin on 5 Mbps CAN FD bit timing windows. Use Value: 0.11 ns propagation delay preserves bit sample point accuracy; 9.0 pF ON-state capacitance avoids signal ringing on stubbed CAN bus nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit level-shifting bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3245PWR | Wider supply range (4.5–5.5 V); higher ON-resistance (7 Ω typ); no IOFF | Only suitable for 5 V systems; lacks partial power-down protection | Select only if legacy 5 V design requires pin-for-pin replacement without modifying power architecture |
| 74LVC245ABQ | Direction-controlled 8-bit transceiver; CMOS logic-based; no analog pass-gate behavior | Requires external direction control; introduces 3.5 ns propagation delay and logic-level dependency | Prefer when bidirectional data flow is not required and deterministic direction control is acceptable |
Compared with SN74CBT3245PWR and 74LVC245ABQ, the 74CBTLVD3245PW,118 uniquely combines true analog bidirectionality, sub-nanosecond latency, and IOFF-enabled hot-swap safety-making it irreplaceable in mixed-voltage, high-reliability embedded systems where signal fidelity and power sequencing independence are non-negotiable.
Availability
74CBTLVD3245PW,118 is available at Aetrix Electronics and suitable for memory expansion interfaces, PCIe trace extension, hot-swappable module control, and industrial CAN FD gateway designs requiring stable component supply across extended temperature ranges.
Supply support for 74CBTLVD3245PW,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 focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74CBTLVD3245 belongs to Nexperia's advanced bus switch product line, engineered specifically for low-latency, low-power, mixed-voltage signal routing in space- and thermal-constrained embedded systems.
FAQ
Can the 74CBTLVD3245PW,118 operate with 5 V on either A or B ports?
No. The device is strictly rated for 3.0 V to 3.6 V supply (VCC). Applying 5 V to any A/B port exceeds absolute maximum ratings (VSW = VCC + 0.5 V max), risking permanent damage. It is not 5 V tolerant and requires external clamping or level conversion if interfacing with 5 V logic.
What is the purpose of the n.c. pin (Pin 1) in the TSSOP20 package?
Pin 1 is a no-connect terminal with no electrical or mechanical function. It may be left unconnected or optionally tied to GND for mechanical stability-but must never be used as a signal or power path. Soldering it to ground is permissible only if the land remains electrically floating or explicitly connected to the system ground plane.
How does the IOFF feature behave when VCC is ramping during power-up?
IOFF activates automatically whenever VCC falls below ~1.0 V. During power-up, the switch remains in high-impedance state until VCC reaches ~1.5 V, then transitions to functional mode at ~2.0 V (VIH threshold). This ensures no back-current flows during brown-out or staggered power sequencing.
Is the 74CBTLVD3245PW,118 suitable for automotive applications?
No. This part is not AEC-Q100 qualified and lacks automotive-grade screening, qualification testing, or guaranteed PPAP documentation. Nexperia explicitly states non-automotive qualification in its legal disclaimers; use in automotive systems voids warranty and incurs full customer liability.
74CBTLVD3245PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Bus Switch
- Circuit:
- 8 x 1:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74CBTLVD3245PW,118 FAQ
1.How can I place an order for 74CBTLVD3245PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74CBTLVD3245PW,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 74CBTLVD3245PW,118 reliable?
The price and inventory of 74CBTLVD3245PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74CBTLVD3245PW,118 is usually 5 days.
3.What payment methods are accepted for 74CBTLVD3245PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74CBTLVD3245PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74CBTLVD3245PW,118?
74CBTLVD3245PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74CBTLVD3245PW,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 74CBTLVD3245PW,118?
For technical support, including 74CBTLVD3245PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74CBTLVD3245PW,118 requirements.
6.How does Aetrix verify that 74CBTLVD3245PW,118 is sourced from the original manufacturer or authorized distributors?
All 74CBTLVD3245PW,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 74CBTLVD3245PW,118 meets industry standards.
7.What is the process for return or replacement of 74CBTLVD3245PW,118?
All 74CBTLVD3245PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74CBTLVD3245PW,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 74CBTLVD3245PW,118 part is unused and in its original packaging.
Return procedure for 74CBTLVD3245PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74CBTLVD3245PW,118 Tags
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