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Nexperia USA Inc. 74LVC2T45GF,115
- Part No.:
- 74LVC2T45GF,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
74LVC2T45GF,115.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 8XSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,974
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Product details
Overview
74LVC2T45GF,115 from Nexperia is a dual-bit, dual-supply translating transceiver with 3-state outputs enabling bidirectional level translation between 1.2 V and 5.5 V domains. It features independent VCC(A) and VCC(B) supplies, DIR-controlled data direction (A↔B), IOFF partial power-down protection, and operates across –40 °C to +125 °C. Used in mixed-voltage I²C, UART, and GPIO interfacing between FPGA I/O banks and microcontroller peripherals.
For engineers reviewing the 74LVC2T45GF,115 datasheet, 74LVC2T45GF,115 pinout, 74LVC2T45GF,115 application, or 74LVC2T45GF,115 equivalent, this page delivers verified electrical specs, XSON8 package layout, real-world translation use cases, and validated alternatives for voltage-domain bridging in industrial control and automotive body electronics.
Technical Context
The device implements two independent bidirectional data paths (1A/1B and 2A/2B), each controlled by a single DIR input referenced to VCC(A). Logic translation occurs without internal level-shifting circuitry-instead relying on supply-referenced I/O structures and bus-hold (on 74LVCH variant; 74LVC2T45GF lacks bus hold per datasheet Table 7 footnote [4]).
IOFF circuitry actively disables outputs when either VCC(A) or VCC(B) is at GND, forcing both ports into high-impedance suspend mode. Propagation delays scale with supply voltage combinations-e.g., A→B tPLH ranges from 0.7 ns (VCC(A)=5.0 V → VCC(B)=3.3 V) to 23.5 ns (VCC(A)=1.5 V → VCC(B)=1.5 V) over –40 °C to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | VCC(A): 1.2 V to 5.5 V; VCC(B): 1.2 V to 5.5 V - enables translation between any common low-voltage rails (1.2/1.5/1.8/2.5/3.3/5.0 V). |
| Max Data Rate | 420 Mbps (3.3 V ↔ 5.0 V) - supports high-speed serial peripheral interconnects like fast-mode Plus I²C or GPIO-tethered sensor buses. |
| IOFF Leakage | ±2 μA max (–40 °C to +125 °C) - ensures safe hot-swap and partial power-down in modular systems with staggered rail sequencing. |
| Propagation Delay | tPLH/tPHL ≤ 23.5 ns (worst-case, –40 °C to +125 °C) - guarantees timing closure in sub-50 MHz synchronous interfaces with margin. |
| ESD Protection | HBM > 4000 V, CDM > 1000 V - meets industrial IEC 61000-4-2 system-level robustness requirements without external protection. |
| Quiescent Current | 16 μA max ICC - enables always-on voltage translation in battery-backed subsystems (e.g., RTC domain isolation). |
Pinout & Package
XSON8 package (SOT1089), 1.35 × 1.0 × 0.5 mm, no leads, 8-terminal surface-mount. Pin 1 indicator located below marking code "V5" in lower-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC(A) | Supply for port A and DIR input - defines logic thresholds and drive strength for A-side signals. |
| 2 | 1B | Data I/O terminal for channel 1, referenced to VCC(B) - connects to 1.2–5.5 V B-side bus. |
| 3 | 2B | Data I/O terminal for channel 2, referenced to VCC(B) - enables dual-channel translation without multiplexing. |
| 4 | GND | Common reference for all signals - must be low-inductance connection to avoid ground bounce during switching. |
| 5 | DIR | Direction control input (HIGH = A→B, LOW = B→A), referenced to VCC(A) - requires clean, rail-referenced control signal. |
| 6 | 2A | Data I/O terminal for channel 2, referenced to VCC(A) - matches A-side voltage domain and timing. |
| 7 | 1A | Data I/O terminal for channel 1, referenced to VCC(A) - provides dedicated path for critical control lines. |
| 8 | VCC(B) | Supply for port B - isolates B-side noise and allows independent power sequencing from A-side. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent translation channels | Enables concurrent A↔B data flow on 1A/1B and 2A/2B without shared timing constraints or contention. |
| IOFF-enabled partial power-down | Prevents backflow current when one supply is off - critical for power-gated SoC subsystems and hot-plug modules. |
| Wide VCC tolerance (±0.5 V abs max) | Supports transient overvoltage events up to 6.5 V on either supply - eliminates need for external clamp diodes. |
| Input tolerance to 5.5 V | Allows 5 V-tolerant inputs even when VCC(A) or VCC(B) is at 1.2 V - simplifies interface to legacy 5 V logic without resistive dividers. |
| Specified for –40 °C to +125 °C | Validated for under-hood automotive, industrial motor drives, and outdoor telecom equipment without derating. |
Applications
| Automotive Body Control Module | Industrial PLC I/O Expansion |
|---|---|
|
Use Scenario: Interfacing 3.3 V CAN controller MCU with 5.0 V sensor cluster via GPIO-mapped diagnostics bus. IC Role / Device Role / Timing Role: Bidirectional level translator for diagnostic command/response lines, with DIR toggled per transaction phase. Use Value: Eliminates discrete resistor-divider networks while maintaining <25 ns propagation delay for real-time fault reporting. |
Use Scenario: Bridging 1.8 V FPGA configuration I/O to 2.5 V analog front-end ADC/DAC control lines in modular I/O card. IC Role / Device Role / Timing Role: Voltage-domain isolator for SPI clock/data lines, powered independently to prevent cross-rail noise coupling. Use Value: Enables simultaneous operation of FPGA fabric and analog subsystems without shared supply interference or timing skew. |
| Server Baseboard Management Controller | Medical Patient Monitor Interface |
|
Use Scenario: Translating SMBus alerts from 1.2 V DDR5 memory modules to 3.3 V BMC processor I²C bus. IC Role / Device Role / Timing Role: Hot-swap-safe translator with IOFF - maintains high-Z state during memory module insertion/removal. Use Value: Prevents bus contention and false alarms during field-replaceable unit (FRU) servicing without BMC firmware intervention. |
Use Scenario: Isolating 5.0 V ECG front-end analog switches from 1.5 V ultra-low-power patient monitoring SoC GPIO. IC Role / Device Role / Timing Role: Asymmetric voltage translator for control signaling only - no data throughput requirement, but strict leakage control. Use Value: Limits standby current to <2 μA per channel, extending battery life in portable clinical devices beyond 72 hours. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply translating transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVC2T245RSWR | TI part uses AVCMOS core; higher drive (±12 mA @ 1.8 V) but narrower VCC range (1.2–3.6 V on both sides). | Limited to ≤3.6 V domains - unsuitable for 5 V legacy sensor interfacing required in this design. | Select when interfacing only sub-3.6 V domains and higher drive is needed for long PCB traces. |
| TXS0102DCUR | Texas Instruments auto-direction sensing; no DIR pin, but adds 10 kΩ pull-up/pull-down on data lines and higher capacitance (12 pF). | Eliminates DIR control logic but increases capacitive loading - degrades signal integrity above 20 MHz. | Choose for simple point-to-point links where direction is inherently unidirectional per line and speed <15 Mbps. |
Compared with SN74AVC2T245RSWR and TXS0102DCUR, the 74LVC2T45GF,115 uniquely supports full 1.2–5.5 V translation on both sides with minimal added capacitance (6.0 pF), making it optimal for mixed-voltage systems requiring deterministic direction control and high-speed integrity.
Availability
74LVC2T45GF,115 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O expansion, server baseboard management, and medical patient monitor interface designs requiring stable component supply across extended temperature and voltage ranges.
Supply support for 74LVC2T45GF,115 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 standard logic, power MOSFETs, and ESD protection devices, serving automotive, industrial, and computing markets.
The 74LVC2T45GF,115 belongs to Nexperia's LVC logic family, engineered for low-voltage, high-speed bidirectional translation in space-constrained, thermally demanding applications where supply flexibility and IOFF safety are mandatory.
FAQ
What is the maximum allowable voltage difference between VCC(A) and VCC(B)?
The datasheet specifies independent absolute maximum ratings: VCC(A) and VCC(B) each tolerate –0.5 V to +6.5 V relative to GND. No differential limit is defined - the device functions correctly with VCC(A) = 1.2 V and VCC(B) = 5.5 V simultaneously, provided both remain within their individual limits and GND is common.
Does the 74LVC2T45GF,115 include bus-hold circuitry?
No. Bus-hold is present only in the 74LVCH2T45 variant (e.g., 74LVCH2T45GF). The 74LVC2T45GF,115 lacks internal bus-hold; unused inputs must be externally terminated to VCC or GND to prevent floating states and increased dynamic power consumption.
Can DIR be driven from a different voltage domain than VCC(A)?
No. DIR is explicitly referenced to VCC(A); its VIH/VIL thresholds scale with VCC(A) (e.g., VIH = 0.65×VCC(A) for 1.4–1.95 V operation). Driving DIR from VCC(B) or another rail violates input specifications and may cause undefined logic states or excessive input current.
What is the thermal resistance (RθJA) for the SOT1089 package?
Per Nexperia's thermal characterization, the XSON8 SOT1089 package has RθJA = 250 K/W (measured on 1-layer 1-oz copper, 100 mm² pad). With 16 μA ICC, self-heating is negligible (<0.001 °C), but at full 24 mA drive per output, junction rise must be calculated using P = I²×RDS(on) + CPD×VCC²×f.
74LVC2T45GF,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVC
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 2
- Voltage - VCCA:
- 1.2 V ~ 5.5 V
- Voltage - VCCB:
- 1.2 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- 420Mbps
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-XFDFN
74LVC2T45GF,115 FAQ
1.How can I place an order for 74LVC2T45GF,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC2T45GF,115 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 74LVC2T45GF,115 reliable?
The price and inventory of 74LVC2T45GF,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC2T45GF,115 is usually 5 days.
3.What payment methods are accepted for 74LVC2T45GF,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC2T45GF,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC2T45GF,115?
74LVC2T45GF,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC2T45GF,115 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 74LVC2T45GF,115?
For technical support, including 74LVC2T45GF,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC2T45GF,115 requirements.
6.How does Aetrix verify that 74LVC2T45GF,115 is sourced from the original manufacturer or authorized distributors?
All 74LVC2T45GF,115 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 74LVC2T45GF,115 meets industry standards.
7.What is the process for return or replacement of 74LVC2T45GF,115?
All 74LVC2T45GF,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC2T45GF,115, 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 74LVC2T45GF,115 part is unused and in its original packaging.
Return procedure for 74LVC2T45GF,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVC2T45GF,115 Tags
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