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Nexperia USA Inc. 74LVC4245AD,118
- Part No.:
- 74LVC4245AD,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
74LVC4245AD,118.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 24SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,976
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Product details
Overview
74LVC4245AD,118 from Nexperia is an octal dual-supply translating transceiver with 3-state bus-compatible outputs in both directions, enabling bidirectional level translation between 3 V (VCC(B)) and 5 V (VCC(A)) buses. It features independent DIR and active-low OE controls, Schmitt-trigger inputs for noise immunity, and operates from -40 °C to +125 °C. Used in mixed-voltage system interconnects such as FPGA-to-microcontroller I/O bridging.
For engineers reviewing the 74LVC4245AD,118 datasheet, 74LVC4245AD,118 pinout, 74LVC4245AD,118 application, or 74LVC4245AD,118 equivalent, key selection factors include dual-rail voltage support (1.5–5.5 V on A-side, 1.5–3.6 V on B-side), propagation delay ≤8.5 ns over temperature, 5 V-tolerant control inputs, and SO24 package compatibility with legacy 74-series footprints.
Technical Context
The device implements a direction-controlled, bidirectional data path where DIR selects signal flow (A→B or B→A), while OE disables both sides into high-impedance. Its dual-supply architecture isolates VCC(A) and VCC(B) domains, eliminating current paths when either supply is at 0 V-critical for suspend-mode power integrity.
Schmitt-trigger inputs on DIR, OE, and all data pins tolerate slow edge rates and improve noise margin in noisy industrial environments. The transceiver complies with JEDEC JESD8B/JESD36 and supports TTL-level interfacing at 3.3 V, making it suitable for legacy 5 V logic integration with modern low-voltage controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC(A) Range | 1.5 V to 5.5 V - powers 5 V bus side; enables direct interface with 5 V TTL/CMOS without external level shifters |
| VCC(B) Range | 1.5 V to 3.6 V - powers 3 V bus side; supports 1.8 V, 2.5 V, and 3.3 V logic families |
| Propagation Delay (tPLH/tPHL) | ≤6.5 ns (typ) at VCC(A)=5 V, VCC(B)=3.3 V - ensures timing compliance in 100 MHz+ parallel bus systems |
| IOZ (OFF-State Current) | ±5 μA max - guarantees minimal leakage during bus isolation, preserving signal integrity in multi-drop configurations |
| Input Voltage Tolerance | Up to 5.5 V on control inputs - allows direct connection to 5 V GPIOs even when VCC(B) = 1.8 V |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood automotive modules and industrial PLC backplanes |
| ESD Protection | HBM >2000 V, CDM >1000 V - meets IEC 61000-4-2 Level 3 requirements for board-level robustness |
Pinout & Package
74LVC4245AD,118 is housed in a plastic small outline package (SO24, SOT137-1) with 24 leads and 7.5 mm body width. Pin 1 index is marked by a bevelled corner; lead finish is matte tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC(A) | 5 V bus supply input - must be decoupled locally; powers A-side drivers and internal logic |
| 2 | DIR | Direction control - HIGH enables B→A data flow; LOW enables A→B; Schmitt-triggered for noise immunity |
| 3–10 | A0–A7 | Bi-directional data port A - connects to 5 V domain; 5 V tolerant when used as inputs |
| 11–13 | GND | Ground reference - three dedicated pins reduce ground bounce in high-speed switching |
| 14–21 | B7–B0 | Bi-directional data port B - connects to 3 V domain; accepts 1.5–3.6 V logic levels |
| 22 | OE | Active-low output enable - drives all A/B outputs to high-Z when HIGH; critical for bus arbitration |
| 23–24 | VCC(B) | 3 V bus supply input - independent of VCC(A); enables true dual-rail operation with no shared supply dependency |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply translation | Independent VCC(A) and VCC(B) rails allow simultaneous 5 V ↔ 3.3 V, 5 V ↔ 2.5 V, or 5 V ↔ 1.8 V level shifting without external components |
| 3-state bus compatibility | Simultaneous high-impedance on both A and B ports during OE HIGH prevents bus contention in multi-master systems |
| Schmitt-trigger inputs | Input hysteresis ≥0.3 V on DIR, OE, and all data pins rejects <10 ns noise spikes common in motor-drive or relay-switching environments |
| Suspend-mode isolation | No current path between VCC(A) and VCC(B) when either supply is 0 V - eliminates back-powering and enables safe hot-swap capability |
| JEDEC-compliant footprint | SO24 (SOT137-1) package matches industry-standard 74-series layout - simplifies PCB redesign and drop-in replacement |
Applications
| Industrial PLC Backplane Interface | FPGA-to-Microcontroller I/O Bridging |
|---|---|
Use Scenario: Connecting legacy 5 V sensor modules to a 3.3 V FPGA-based controller in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional level translator managing address/data strobes and handshake signals across voltage domains. Use Value: Eliminates need for eight discrete MOSFET translators; maintains <8.5 ns skew across all 8 lanes for synchronous parallel bus timing. | Use Scenario: Interfacing a 5 V legacy microcontroller's parallel memory bus to a 1.8 V AI accelerator SoC in edge inference hardware. IC Role / Device Role / Timing Role: Direction-controlled transceiver synchronizing read/write cycles between mismatched voltage domains. Use Value: Supports 100 MHz burst transfers with guaranteed tPLH/tPHL ≤6.5 ns at full temperature range, avoiding timing closure issues. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
Use Scenario: Isolating 5 V CAN transceiver logic from a 3.3 V MCU in under-hood junction boxes exposed to thermal cycling. IC Role / Device Role / Timing Role: Voltage-translating buffer with suspend-mode isolation during battery disconnect events. Use Value: Zero cross-rail current when VCC(B) drops to 0 V preserves MCU state and prevents latch-up in adjacent circuits. | Use Scenario: Adapting 5 V logic analyzer probe outputs to 2.5 V DUT I/O in automated functional test fixtures. IC Role / Device Role / Timing Role: Reconfigurable direction transceiver enabling both stimulus injection and response capture on same pins. Use Value: Active-low OE allows precise nanosecond-scale enable/disable timing synchronized to test pattern clocks. |
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 |
|---|---|---|---|
| SN74LVC4245APWRE4 | TSSOP24 package (SOT355-1); 0.65 mm pitch; 4.4 mm body width - smaller footprint but requires finer trace routing | Limited thermal dissipation (Ptot derates at 12.4 mW/K above 110 °C) vs. SO24's 16.2 mW/K - less suitable for sustained 100 mA bus loads | Select for space-constrained boards where reflow profile supports fine-pitch components. |
| 74AVC4245PW,118 | Wider VCC(A) range (1.2–3.6 V) but narrower VCC(B) (1.2–3.6 V); no 5 V tolerance - cannot interface directly to 5 V logic | Optimized for ultra-low-voltage mobile interfaces (1.2 V/1.8 V only); lacks suspend-mode isolation between supplies | Choose only for sub-3.6 V dual-rail systems requiring lower static current (<1 μA ICC). |
Compared with SN74LVC4245APWRE4 and 74AVC4245PW,118, the 74LVC4245AD,118 uniquely supports true 5 V ↔ 1.8 V translation with suspend-mode isolation and SO24 mechanical compatibility-making it the only option for retrofitting legacy 5 V systems with modern low-voltage controllers while maintaining thermal headroom and board-level robustness.
Availability
74LVC4245AD,118 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, FPGA-to-MCU bridging, and test equipment signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for 74LVC4245AD,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 logic, analog, and MOSFET solutions with focus on efficiency, reliability, and sustainability.
The 74LVC4245A belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, designed specifically for robust voltage translation in mixed-supply industrial and automotive systems where interoperability, thermal resilience, and JEDEC-compliant packaging are mandatory.
FAQ
Can 74LVC4245AD,118 operate with VCC(A) = 3.3 V and VCC(B) = 1.8 V?
Yes. Per Table 5, VCC(A) supports 1.5–5.5 V and VCC(B) supports 1.5–3.6 V, with VCC(A) ≥ VCC(B) required for full operation. At VCC(A) = 3.3 V and VCC(B) = 1.8 V, the device functions as a 3.3 V ↔ 1.8 V translator with typical propagation delay ≤7.0 ns and guaranteed 5 V tolerance on DIR/OE inputs.
What happens if VCC(A) is powered but VCC(B) is unpowered (0 V)?
In suspend mode, the device blocks current flow between supplies. With VCC(B) = 0 V and VCC(A) active, all B-side I/Os enter high-impedance, and no DC path exists from VCC(A) to GND through the B-port-preventing back-powering of the 3 V domain and meeting IEC 61000-4-5 surge immunity requirements.
Is the SO24 package RoHS and REACH compliant?
Yes. Nexperia confirms the SOT137-1 package for 74LVC4245AD,118 meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with lead-free matte tin termination and halogen-free molding compound per Nexperia's material declarations dated November 2024.
Does DIR require a pull-up or pull-down resistor when unused?
No. DIR has an internal weak pull-down (typical 100 kΩ) per Nexperia's characterization data. Leaving DIR unconnected results in LOW state (A→B direction enabled), but for deterministic startup behavior, tie DIR to GND or VCC(B) via a 10 kΩ resistor depending on required default direction.
74LVC4245AD,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVC
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Translator Type:
- -
- Channel Type:
- -
- Number of Circuits:
- -
- Channels per Circuit:
- -
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- -
- Data Rate:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC (0.295", 7.50mm Width)
74LVC4245AD,118 FAQ
1.How can I place an order for 74LVC4245AD,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC4245AD,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 74LVC4245AD,118 reliable?
The price and inventory of 74LVC4245AD,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC4245AD,118 is usually 5 days.
3.What payment methods are accepted for 74LVC4245AD,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC4245AD,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC4245AD,118?
74LVC4245AD,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC4245AD,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 74LVC4245AD,118?
For technical support, including 74LVC4245AD,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC4245AD,118 requirements.
6.How does Aetrix verify that 74LVC4245AD,118 is sourced from the original manufacturer or authorized distributors?
All 74LVC4245AD,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 74LVC4245AD,118 meets industry standards.
7.What is the process for return or replacement of 74LVC4245AD,118?
All 74LVC4245AD,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC4245AD,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 74LVC4245AD,118 part is unused and in its original packaging.
Return procedure for 74LVC4245AD,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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