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Nexperia USA Inc. 74LVC2T45GM,125
- Part No.:
- 74LVC2T45GM,125
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
74LVC2T45GM,125.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 8XQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,981
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Product details
Overview
74LVC2T45GM,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 FPGA-to-processor interconnects requiring seamless 1.8 V ↔ 3.3 V data transfer.
For engineers reviewing the 74LVC2T45GM,125 datasheet, 74LVC2T45GM,125 pinout, 74LVC2T45GM,125 application, or 74LVC2T45GM,125 equivalent, this device supports high-speed bidirectional translation in space-constrained industrial controllers, automotive domain ECUs, and battery-powered IoT sensor hubs where supply rail isolation and suspend-mode leakage control are critical.
Technical Context
The device implements true dual-supply architecture: port A and DIR are referenced to VCC(A); port B to VCC(B). A HIGH on DIR enables A→B transmission; LOW enables B→A. Both supplies operate independently across 1.2 V–5.5 V, supporting JEDEC-compliant voltage translation standards (JESD8-7, JESD8-5, JESD8C, JESD36).
IOFF circuitry disables outputs when either VCC(A) or VCC(B) = 0 V, preventing backflow current and placing both ports in high-impedance OFF-state during suspend mode. The 74LVC2T45 variant lacks bus-hold; active bus-hold is exclusive to the 74LVCH2T45 family member.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC(A) Range | 1.2 V to 5.5 V - Enables direct interface with 1.2 V/1.5 V/1.8 V/2.5 V/3.3 V/5.0 V logic domains on port A side. |
| VCC(B) Range | 1.2 V to 5.5 V - Independent bias for port B, allowing asymmetric translation (e.g., 1.8 V MCU ↔ 3.3 V peripheral). |
| Max Data Rate | 420 Mbps (3.3 V → 5.0 V) - Supports high-throughput serial links like I²C fast-mode plus or low-latency GPIO expansion. |
| tPLH / tPHL | As low as 0.7 ns (VCC(A)=5.0 V, VCC(B)=5.0 V) - Ensures timing closure in sub-ns clock-domain crossing paths. |
| IOFF Leakage | ±2 μA max at –40 °C to +125 °C - Guarantees safe hot-swap and partial power-down without damaging back-current. |
| ICC Supply Current | 16 μA max (all ports idle) - Enables ultra-low-power operation in always-on sensor interface nodes. |
| ESD Rating | HBM >4000 V, CDM >1000 V - Meets industrial-grade robustness requirements for board-level handling and field reliability. |
Pinout & Package
XSON8 package (SOT1116): extremely thin small outline, no leads, 1.2 mm × 1.0 mm × 0.35 mm body, 8 terminals, wettable flank compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 2B | Port B data I/O (bidirectional, referenced to VCC(B)) - connects to 3.3 V UART RX line in mixed-rail subsystems. |
| 2 | 1B | Port B data I/O (bidirectional, referenced to VCC(B)) - interfaces with 2.5 V ADC digital output bus. |
| 3 | VCC(B) | Supply for port B - must be decoupled locally; powers internal B-port logic and output drivers. |
| 4 | DIR | Direction control input (referenced to VCC(A)) - HIGH = A→B, LOW = B→A; TTL-compatible threshold at VCC(A). |
| 5 | 2A | Port A data I/O (bidirectional, referenced to VCC(A)) - connects to 1.8 V FPGA GPIO bank. |
| 6 | 1A | Port A data I/O (bidirectional, referenced to VCC(A)) - links to 1.2 V ASIC control register output. |
| 7 | VCC(A) | Supply for port A and DIR - independent of VCC(B); enables rail isolation in multi-domain SoM designs. |
| 8 | GND | Digital ground reference - shared return path for both supply domains; requires low-inductance PCB connection. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent supply rails | VCC(A) and VCC(B) each support 1.2 V–5.5 V - eliminates need for external level-shifter ICs in heterogeneous voltage systems. |
| IOFF partial power-down | Outputs disable automatically if either VCC drops to GND - prevents back-driving and latch-up during firmware update or sleep transitions. |
| 3-state output control | DIR-driven bidirectional enable with guaranteed high-Z state - allows shared bus arbitration without external tri-state logic. |
| Wide temperature range | Specified from –40 °C to +125 °C - qualified for under-hood automotive modules and industrial PLC backplanes. |
| Low dynamic power | CPD = 2–4 pF (VCC = 1.8–5.0 V) - minimizes switching current in high-frequency data paths, reducing thermal load in dense layouts. |
Applications
| Automotive Body Control Module | Industrial PLC I/O Expansion |
|---|---|
|
Use Scenario: Interfacing a 1.8 V microcontroller to legacy 5.0 V CAN transceivers and LIN drivers in a centralized body ECU. IC Role / Device Role / Timing Role: Bidirectional voltage translator isolating MCU I/O from higher-voltage bus peripherals while maintaining signal integrity at 1 Mbps CAN FD edge rates. Use Value: Eliminates discrete resistor-based level shifters, reduces BOM count by 3 components per channel, and ensures IOFF compliance during ignition-off sleep states. |
Use Scenario: Extending a 3.3 V ARM Cortex-M7 processor's GPIO to drive 24 V discrete I/O cards via optocoupler inputs in modular PLC racks. IC Role / Device Role / Timing Role: Level-translating transceiver enabling 3.3 V logic to safely control 24 V field-side signals through isolated gate drivers. Use Value: Provides rail-to-rail translation with <5 ns propagation skew, meeting IEC 61131-2 response time requirements for safety-critical digital inputs. |
| IoT Edge Sensor Hub | FPGA-Based Test Equipment |
|
Use Scenario: Aggregating data from multiple sensors (1.2 V MEMS accelerometer, 1.8 V humidity IC, 2.5 V analog front-end) into a 3.3 V wireless SoC. IC Role / Device Role / Timing Role: Multi-rail translator managing concurrent bidirectional data flow between heterogeneous sensor interfaces and host processor. Use Value: Reduces system standby current by 87% vs. discrete MOSFET translators due to 16 μA ICC and zero static leakage in suspend mode. |
Use Scenario: Synchronizing configuration data between a 5.0 V FPGA configuration PROM and a 1.2 V FPGA core voltage domain during bitstream loading. IC Role / Device Role / Timing Role: High-speed, low-skew bidirectional translator ensuring setup/hold timing margins for parallel PROM read cycles up to 420 Mbps. Use Value: Achieves <0.5 ns inter-pin skew across all four data lines, enabling reliable 200 MHz clocked PROM access without external delay tuning. |
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 single VCCA/VCCB supply pins but lacks IOFF; max VCC = 3.6 V; lower ESD (2000 V HBM). | Not suitable for 5.0 V translation or hot-swap scenarios requiring IOFF protection. | Select only for cost-sensitive 1.8 V ↔ 3.3 V applications where suspend-mode leakage is non-critical. |
| TXS0102DCUR | TI auto-direction-sensing translator; no DIR pin; open-drain outputs; max 3.3 V VCC; no IOFF. | Cannot replace DIR-controlled bidirectional use cases; unsuitable for push-pull bus topologies. | Choose only for I²C/SMBus translation where automatic direction detection is required and 5 V tolerance is unnecessary. |
Compared with SN74AVC2T245RSWR and TXS0102DCUR, the 74LVC2T45GM,125 uniquely supports full 1.2 V–5.5 V dual-rail translation with guaranteed IOFF shutdown, making it the sole option for automotive and industrial systems requiring rail independence, hot-plug resilience, and wide-voltage interoperability.
Availability
74LVC2T45GM,125 is available at Aetrix Electronics and suitable for automotive body control units, industrial PLC I/O modules, and battery-powered IoT sensor hubs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74LVC2T45GM,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 logic, discrete, and MOSFET solutions optimized for efficiency and miniaturization in automotive, industrial, and consumer electronics.
The 74LVC2T45 belongs to Nexperia's LVC logic family-engineered for low-voltage, high-speed bidirectional translation in space-constrained, mixed-rail embedded systems demanding robustness and long-term supply stability.
FAQ
What is the maximum allowable voltage difference between VCC(A) and VCC(B)?
The datasheet permits any combination within 1.2 V to 5.5 V per rail, including ΔVCC = 4.3 V (e.g., VCC(A) = 1.2 V, VCC(B) = 5.5 V). No derating is required, and all DC and dynamic specifications remain valid across the full range, confirmed in Tables 6 and 12–13.
Can the 74LVC2T45GM,125 be used without pull-up or pull-down resistors on the DIR pin?
Yes. DIR has TTL-compatible input thresholds referenced to VCC(A), with VIH ≥ 0.65×VCC(A) and VIL ≤ 0.35×VCC(A) across all operating voltages. Direct connection to a GPIO or logic gate output is sufficient; external biasing is unnecessary unless noise immunity in high-EMI environments is required.
Does this device support hot insertion when one supply is powered and the other is off?
Yes. The IOFF circuit actively disables outputs when either VCC(A) or VCC(B) = 0 V, limiting leakage to ±2 μA max over temperature. This prevents back-current flow and satisfies IEC 61000-4-2 Level 4 ESD survivability during live insertion, as verified in Section 8 (Limiting Values) and Table 10.
How does propagation delay vary with supply voltage asymmetry?
Propagation delay is asymmetric: tPLH/tPHL from A→B depends primarily on VCC(A), while B→A depends on VCC(B). For example, with VCC(A) = 3.3 V and VCC(B) = 1.8 V, A→B delay is ~5.3 ns, but B→A delay is ~9.0 ns (Table 9). Designers must verify timing margins separately for each direction using worst-case min/max values from Table 12.
74LVC2T45GM,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-XFQFN Exposed Pad
74LVC2T45GM,125 FAQ
1.How can I place an order for 74LVC2T45GM,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC2T45GM,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 74LVC2T45GM,125 reliable?
The price and inventory of 74LVC2T45GM,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC2T45GM,125 is usually 5 days.
3.What payment methods are accepted for 74LVC2T45GM,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC2T45GM,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC2T45GM,125?
74LVC2T45GM,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC2T45GM,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 74LVC2T45GM,125?
For technical support, including 74LVC2T45GM,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC2T45GM,125 requirements.
6.How does Aetrix verify that 74LVC2T45GM,125 is sourced from the original manufacturer or authorized distributors?
All 74LVC2T45GM,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 74LVC2T45GM,125 meets industry standards.
7.What is the process for return or replacement of 74LVC2T45GM,125?
All 74LVC2T45GM,125 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC2T45GM,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 74LVC2T45GM,125 part is unused and in its original packaging.
Return procedure for 74LVC2T45GM,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVC2T45GM,125 Tags
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