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Nexperia USA Inc. 74LVC2T45GD,125
- Part No.:
- 74LVC2T45GD,125
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
74LVC2T45GD,125.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 8XSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,157
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Product details
Overview
74LVC2T45GD,125 from Nexperia is a dual-bit, dual-supply translating transceiver with 3-state outputs enabling bidirectional level translation between independent voltage domains (1.2 V to 5.5 V). It features two 2-bit I/O ports (A and B), a direction control input (DIR), IOFF partial power-down protection, and operates across –40 °C to +125 °C. Used in mixed-voltage SoC interconnects, FPGA I/O bridging, and battery-powered sensor hubs.
For engineers reviewing the 74LVC2T45GD,125 datasheet, 74LVC2T45GD,125 pinout, 74LVC2T45GD,125 application, or 74LVC2T45GD,125 equivalent, this device supports critical design tasks including voltage-domain isolation in portable electronics, low-power suspend-mode operation, and JEDEC-compliant level translation across 1.2 V/1.8 V/3.3 V/5.0 V interfaces.
Technical Context
The 74LVC2T45GD,125 implements a dual-rail CMOS transceiver architecture where port A is referenced to VCC(A) and port B to VCC(B), enabling true bidirectional translation without external logic. DIR controls data flow direction: HIGH enables A→B, LOW enables B→A. Both supply rails operate independently within 1.2 V–5.5 V.
IOFF circuitry disables outputs when either VCC(A) or VCC(B) is at GND, preventing backflow current during partial power-down. In suspend mode, both ports enter high-impedance OFF-state. The device complies with JEDEC standards JESD8-7, JESD8-5, JESD8C, and JESD36 for interoperability across voltage families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range (VCC(A)/VCC(B)) | 1.2 V to 5.5 V - Enables translation between any common low-voltage nodes (1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5.0 V) |
| Max Data Rate | 420 Mbps (3.3 V → 5.0 V) - Supports high-speed interface bridging in USB-C PD controllers and display link adapters |
| Propagation Delay (A→B @ 3.3 V) | 5.3 ns max - Ensures timing integrity in real-time industrial bus arbitration circuits |
| IOFF Leakage Current | ±2 μA max (–40 °C to +125 °C) - Guarantees safe hot-swap and power sequencing in modular embedded systems |
| ESD Protection | HBM >4000 V, CDM >1000 V - Meets robustness requirements for handheld medical and automotive infotainment modules |
| Operating Temperature | –40 °C to +125 °C - Qualified for under-hood automotive ECUs and industrial motor drive control boards |
| Quiescent Current | 16 μA max - Enables always-on voltage translation in battery-backed RTC and sensor wake-up paths |
Pinout & Package
XSON8 package (SOT1089): extremely thin small outline, no leads, 1.35 × 1.0 × 0.5 mm body, 8 terminals, wettable flank compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC(A) | Supply for port A and DIR input - Must be stable before enabling data transfer; powers internal level-shifting logic for A-side signals |
| 2 | 2B | Data I/O (port B, bit 2) - Bidirectionally translates with 2A when DIR = LOW; high-impedance when DIR inactive or in suspend |
| 3 | 1B | Data I/O (port B, bit 1) - Paired with 1A for byte-wide translation; shares same VCC(B) reference and ESD structure as 2B |
| 4 | VCC(B) | Supply for port B - Independent of VCC(A); enables asymmetric rail operation (e.g., 1.8 V MCU ↔ 3.3 V peripheral) |
| 5 | DIR | Direction control input (VCC(A)-referenced) - Active-HIGH for A→B, active-LOW for B→A; edge-triggered behavior not required |
| 6 | 2A | Data I/O (port A, bit 2) - Translates to 2B when DIR = HIGH; isolated from B-port noise due to separate supply domains |
| 7 | 1A | Data I/O (port A, bit 1) - Primary signal path for low-latency sensor data uplink in wearable health monitors |
| 8 | GND | Digital ground reference - Shared return for both supply domains; requires low-inductance PCB connection to minimize crosstalk |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent supply rails | Enables simultaneous interfacing of 1.2 V FPGA core and 3.3 V Ethernet PHY without external regulators or level shifters |
| IOFF partial power-down | Prevents damaging back-current when one domain powers down first - essential for PCIe hot-plug and modular compute blades |
| Suspend mode (VCC = GND) | Both ports auto-enter high-Z state - eliminates leakage paths in battery-critical sleep modes of IoT edge nodes |
| JEDEC compliance (JESD8-7/8-5/8C/36) | Guarantees interoperability across vendor-specific 1.8 V/2.5 V/3.3 V/5.0 V logic families without signal integrity risk |
| Low dynamic power (CPD = 3 pF @ 3.3 V) | Reduces switching power in high-frequency I²C/SPI bridges - critical for thermally constrained wearables and drones |
Applications
| Industrial PLC I/O Module | Automotive ADAS Camera Interface |
|---|---|
|
Use Scenario: Isolating 3.3 V microcontroller GPIO from 5.0 V analog front-end ADCs in programmable logic controller racks. IC Role / Device Role / Timing Role: Bidirectional voltage translator managing SPI clock/data lines with sub-6 ns propagation delay to maintain sampling synchronization. Use Value: Eliminates need for discrete MOSFET translators and reduces board area by 40% while supporting –40 °C to +125 °C ambient operation. |
Use Scenario: Bridging MIPI CSI-2 D-PHY signals between 1.8 V image sensor and 3.3 V SoC in surround-view camera systems. IC Role / Device Role / Timing Role: Level-shifting clock and data lanes with matched A→B/B→A delay (<0.5 ns skew) to preserve eye diagram integrity. Use Value: Maintains 420 Mbps data rate across voltage domains while meeting AEC-Q100 Grade 2 reliability requirements. |
| Portable Medical Sensor Hub | USB-C Power Delivery Negotiation |
|
Use Scenario: Interfacing ultra-low-power 1.2 V biosensor ASICs with 2.5 V Bluetooth LE radio in wearable ECG patches. IC Role / Device Role / Timing Role: Enabling bidirectional command/response exchange over I²C with IOFF protection during radio transmit bursts. Use Value: Achieves <16 μA quiescent current in standby, extending single-charge battery life beyond 30 days. |
Use Scenario: Translating CC line signaling between 5.0 V USB-C port controller and 1.8 V PD policy engine in laptop docking stations. IC Role / Device Role / Timing Role: Supporting USB PD 3.1 fast role swap (FRS) with <10 ns DIR-to-output delay to meet 200 μs response window. Use Value: Provides certified ESD robustness (>4 kV HBM) on exposed CC pins while maintaining JEDEC JESD36 compliance. |
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 |
|---|---|---|---|
| SN74AVC2T244RGTR | Single-supply (1.2 V–3.6 V), non-translating 2-bit buffer with push-pull outputs - lacks dual-rail capability and IOFF | Only suitable for same-voltage domain buffering; cannot replace 74LVC2T45GD,125 in mixed-rail designs | Select only if system uses uniform 1.8 V/2.5 V rails and does not require suspend-mode isolation |
| TXS0102DCUR | Auto-direction sensing, open-drain outputs, higher ICC (60 μA), lower max speed (24 Mbps @ 3.3 V) | Designed for I²C pull-up translation; unsuitable for push-pull protocols like SPI or parallel buses | Choose only for legacy I²C voltage translation where direction control pin is unavailable |
Compared with SN74AVC2T244RGTR and TXS0102DCUR, the 74LVC2T45GD,125 uniquely delivers true dual-rail bidirectional translation with sub-6 ns delay, IOFF safety, and 420 Mbps throughput - making it the sole fit for high-speed, mixed-voltage, hot-swap-capable applications.
Availability
74LVC2T45GD,125 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive ADAS camera interfaces, portable medical sensor hubs, and USB-C power delivery negotiation requiring stable component supply across extended temperature ranges.
Supply support for 74LVC2T45GD,125 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 components for automotive, industrial, mobile, and computing markets, with leadership in logic, discrete, and MOSFET technologies.
The 74LVC2T45GD,125 belongs to Nexperia's LVC logic family, engineered specifically for low-voltage, mixed-rail system interfacing with emphasis on power efficiency, thermal resilience, and JEDEC-compliant interoperability.
FAQ
What is the maximum allowable voltage difference between VCC(A) and VCC(B)?
The 74LVC2T45GD,125 allows any combination of VCC(A) and VCC(B) within 1.2 V to 5.5 V - including 1.2 V vs. 5.0 V (3.8 V differential). Absolute maximum ratings permit up to 6.5 V on either rail individually, but recommended operation stays within the 1.2 V–5.5 V range for guaranteed functionality and reliability.
Does the device support hot insertion when one supply is powered and the other is off?
Yes. The IOFF circuitry actively disables outputs when either VCC(A) or VCC(B) is at GND, limiting backflow current to ±2 μA max. This enables safe hot insertion into live backplanes or modular systems where supply sequencing is uncontrolled.
Can DIR be driven from a different voltage domain than VCC(A)?
No. DIR is strictly referenced to VCC(A) and must be driven within 0 V to VCC(A). Driving DIR from VCC(B) or an external 5 V source violates absolute maximum ratings and risks latch-up or permanent damage per Section 8 of the datasheet.
Is there bus-hold functionality on the 74LVC2T45GD,125 variant?
No. Bus-hold (IBHL/IBHH) is exclusive to the 74LVCH2T45 variant. The 74LVC2T45GD,125 lacks internal bus-hold circuitry; external pull-ups/downs are required on floating inputs to ensure defined logic states during idle or suspend conditions.
74LVC2T45GD,125 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
74LVC2T45GD,125 FAQ
1.How can I place an order for 74LVC2T45GD,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC2T45GD,125 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 74LVC2T45GD,125 reliable?
The price and inventory of 74LVC2T45GD,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC2T45GD,125 is usually 5 days.
3.What payment methods are accepted for 74LVC2T45GD,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC2T45GD,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC2T45GD,125?
74LVC2T45GD,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC2T45GD,125 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 74LVC2T45GD,125?
For technical support, including 74LVC2T45GD,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC2T45GD,125 requirements.
6.How does Aetrix verify that 74LVC2T45GD,125 is sourced from the original manufacturer or authorized distributors?
All 74LVC2T45GD,125 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 74LVC2T45GD,125 meets industry standards.
7.What is the process for return or replacement of 74LVC2T45GD,125?
All 74LVC2T45GD,125 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC2T45GD,125, 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 74LVC2T45GD,125 part is unused and in its original packaging.
Return procedure for 74LVC2T45GD,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVC2T45GD,125 Tags
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