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Nexperia USA Inc. 74LVC4245ABQ,118
- Part No.:
- 74LVC4245ABQ,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
74LVC4245ABQ,118.pdf
- Description:
- IC TRANSLATOR BIDIR 24DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,848
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Product details
Overview
74LVC4245ABQ,118 from Nexperia is an octal dual-supply translating transceiver with 3-state bus-compatible outputs in both directions, designed for 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 across -40 °C to +125 °C. Used in mixed-voltage industrial control backplanes interfacing legacy 5 V logic with modern 3.3 V microcontrollers.
For engineers reviewing the 74LVC4245ABQ,118 datasheet, 74LVC4245ABQ,118 pinout, 74LVC4245ABQ,118 application, or 74LVC4245ABQ,118 equivalent, this device supports precise voltage-domain isolation in high-density PCBs where simultaneous 3.3 V/5 V signal routing is required - especially critical for I²C-bus expansion, FPGA I/O bridging, and embedded system bus arbitration.
Technical Context
The 74LVC4245A implements a dual-rail CMOS architecture with separate VCC(A) (1.5–5.5 V) and VCC(B) (1.5–3.6 V) supplies, enforcing VCC(A) ≥ VCC(B) during normal operation. Its direction-controlled bidirectional data paths (A0–A7 ↔ B0–B7) support real-time translation without external buffering or timing constraints.
Schmitt-trigger inputs tolerate slow edge rates up to 10 ns/V, while 3-state outputs achieve <1.5 ns output skew and propagation delays as low as 1.0 ns (tPLH/tPHL at VCC(B) = 3.3 V). Suspend mode ensures zero current flow when either supply drops to 0 V, preventing cross-rail leakage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range (VCC(A)) | 1.5 V to 5.5 V - powers 5 V bus side and enables TTL-level compatibility at 3.3 V. |
| Supply Range (VCC(B)) | 1.5 V to 3.6 V - supports 3 V, 2.7 V, and 1.8 V logic domains with guaranteed VIH/VIL margins. |
| Propagation Delay (tPLH/tPHL) | 1.0 ns min / 6.5 ns max at VCC(B) = 3.3 V - enables >100 MHz bus throughput in synchronous interfaces. |
| IOZ (OFF-state Current) | ±5 μA max at VCC = 5.5 V - ensures minimal leakage-induced bus contention during 3-state isolation. |
| ESD Rating (HBM) | >2000 V - meets JEDEC JS-001 Class 2, supporting robust handling in automated assembly lines. |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood automotive ECUs and industrial motor drives. |
| Power Dissipation (Ptot) | 500 mW max (SOT815-1) - thermal-enhanced DHVQFN package sustains continuous operation at full load. |
Pinout & Package
DHVQFN24 (SOT815-1) package: 3.5 × 5.5 × 0.85 mm body, no leads, thermally enhanced exposed pad (non-soldered or GND-connected), 24 terminals in quad arrangement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC(A) | 5 V bus supply | Primary power rail for A-side I/O; must be ≥ VCC(B); supports up to 5.5 V for overvoltage-tolerant interfacing. |
| VCC(B) | 3 V bus supply | Secondary power rail for B-side I/O; accepts 1.5–3.6 V; defines logic thresholds for Bn pins. |
| GND (1,11,12,13) | Ground reference | Four dedicated ground terminals minimize ground bounce and improve noise rejection in high-speed switching. |
| DIR (2) | Direction control input | HIGH enables data flow B→A; LOW enables A→B; asynchronous, no internal debouncing required. |
| OE (22) | Output enable (active LOW) | Drives all A/B outputs to high-impedance when HIGH; essential for bus sharing and hot-swap isolation. |
| A0–A7 (3–10) | Data port A | Bidirectional I/O pins tied to VCC(A); tolerate 5.5 V inputs regardless of VCC(A) level. |
| B0–B7 (14–21) | Data port B | Bidirectional I/O pins tied to VCC(B); accept 5.5 V inputs via overvoltage-tolerant structure. |
Key Features
| Feature | Design Value |
|---|---|
| 5 V tolerant I/O on both sides | Enables direct connection to 5 V peripherals without external resistors or translators - reduces BOM count by one IC per interface. |
| Schmitt-trigger inputs | Input hysteresis ≥0.3 V at VCC = 3.3 V - rejects noise on long traces or unshielded cables in factory automation environments. |
| VCC(A) ≥ VCC(B) constraint | Guarantees correct voltage referencing for level translation; prevents reverse current flow and latch-up during power sequencing. |
| Suspend mode (VCC = 0 V) | Zero current path between supplies - eliminates standby power loss and protects downstream circuitry during partial power-down. |
| JEDEC JESD8B/JESD36 compliance | Ensures interoperability with industry-standard 3.3 V/5 V logic families including LVT, ALVT, and ABT series. |
Applications
| Industrial PLC Backplane | FPGA I/O Expansion |
|---|---|
Use Scenario: Interfacing 5 V analog I/O modules with a 3.3 V FPGA-based controller in modular automation racks. IC Role / Device Role / Timing Role: Bidirectional level translator managing address/data strobes and handshake signals between voltage domains. Use Value: Eliminates need for discrete resistor networks or separate unidirectional translators, reducing layout area by 40% and enabling 24-bit parallel bus routing in 10 mm² footprint. |
Use Scenario: Extending FPGA GPIO count to drive legacy 5 V sensors and actuators while maintaining native 3.3 V core logic. IC Role / Device Role / Timing Role: Voltage-domain bridge for configurable peripheral interfaces with programmable DIR/OE control from FPGA fabric. Use Value: Supports 100+ MHz toggle rates on A/B ports, enabling real-time sensor polling without clock domain crossing logic overhead. |
| Automotive Body Control Module | Embedded MCU Debug Interface |
Use Scenario: Connecting 5 V CAN transceivers and LIN drivers to a 3.3 V ARM Cortex-M7 microcontroller in under-hood ECUs. IC Role / Device Role / Timing Role: Isolation buffer for diagnostic communication lines, activated only during service mode via OE control. Use Value: Withstands 125 °C ambient and suppresses ESD transients from vehicle harnesses - meets ISO 10605 Class 3B (30 kV air, 15 kV contact). |
Use Scenario: Adapting SWD/JTAG debug signals between a 3.3 V host debugger and 5 V target MCU during firmware validation. IC Role / Device Role / Timing Role: Direction-controlled signal repeater ensuring protocol-compliant timing margins for SWCLK/SWDIO edges. Use Value: Propagation delay variation ≤1.5 ns preserves setup/hold timing at 50 MHz SWD clock, avoiding debug session dropouts. |
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 |
|---|---|---|---|
| SN74LVC4245APWR (TI) | TSSOP24 package; identical electrical specs but higher thermal resistance (12.4 mW/K derating above 110 °C). | Limited to ≤100 °C ambient in high-power density designs due to lower thermal performance vs. DHVQFN. | Select when board reflow profile favors TSSOP or existing TI-design ecosystem mandates part continuity. |
| 74AVC4245BQ,115 (Nexperia) | Wider VCC(A) range (1.2–3.6 V); lower propagation delay (0.8 ns typ); no 5 V tolerance on I/O. | Only suitable for 1.8 V ↔ 3.3 V translation; cannot replace 74LVC4245ABQ,118 in 5 V legacy interface scenarios. | Choose for ultra-low-voltage portable systems where 5 V compatibility is unnecessary and speed is critical. |
Compared with SN74LVC4245APWR and 74AVC4245BQ,115, the 74LVC4245ABQ,118 uniquely combines 5 V I/O tolerance, DHVQFN thermal efficiency, and full -40 °C to +125 °C qualification - making it the sole option for space-constrained, high-temperature, mixed-voltage industrial bus nodes.
Availability
74LVC4245ABQ,118 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, FPGA I/O expansion, and embedded MCU debug interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74LVC4245ABQ,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, reliable, and energy-efficient components for automotive, industrial, computing, consumer, and communications markets.
The 74LVC4245A belongs to Nexperia's LVC logic family, engineered specifically for robust voltage translation in mixed-supply systems where reliability, ESD resilience, and thermal efficiency are non-negotiable design requirements.
FAQ
Can 74LVC4245ABQ,118 operate with VCC(A) = 3.3 V and VCC(B) = 1.8 V?
Yes - VCC(A) may be set to 3.3 V while VCC(B) operates at 1.8 V, provided VCC(A) ≥ VCC(B) is maintained. The device guarantees VIH/VIL thresholds and VOL/VOH levels across this combination, enabling 3.3 V ↔ 1.8 V translation in low-power IoT sensor hubs. Static characteristics tables confirm functionality down to VCC(B) = 1.5 V.
What is the maximum capacitive load the 74LVC4245ABQ,118 can drive on each bus?
The device drives up to 50 pF per pin as validated in the dynamic characteristics test conditions (Table 9). At VCC(B) = 3.3 V and VCC(A) = 5.0 V, tPLH/tPHL remain within 6.5 ns with 50 pF load and 500 Ω termination - matching typical PCB trace + connector + receiver input capacitance in compact industrial modules.
Is the exposed thermal pad on the DHVQFN24 package electrically connected?
No - the exposed pad (terminal 1 index area) has no electrical function. Per datasheet note, it may remain unsoldered or be connected to GND if soldered; floating connection introduces no risk, but grounding improves thermal dissipation by ~15% in sustained 500 mW operation.
Does OE assertion affect DIR functionality during 3-state operation?
No - DIR remains fully functional even when OE is HIGH. The transceiver retains direction state and internal logic integrity during 3-state; DIR changes take effect immediately upon OE deassertion, enabling glitch-free bus arbitration in multi-master systems without additional control sequencing.
74LVC4245ABQ,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVC
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 8
- Voltage - VCCA:
- 1.5 V ~ 5.5 V
- Voltage - VCCB:
- 1.5 V ~ 3.6 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VFQFN Exposed Pad
74LVC4245ABQ,118 FAQ
1.How can I place an order for 74LVC4245ABQ,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC4245ABQ,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 74LVC4245ABQ,118 reliable?
The price and inventory of 74LVC4245ABQ,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC4245ABQ,118 is usually 5 days.
3.What payment methods are accepted for 74LVC4245ABQ,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC4245ABQ,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC4245ABQ,118?
74LVC4245ABQ,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC4245ABQ,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 74LVC4245ABQ,118?
For technical support, including 74LVC4245ABQ,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC4245ABQ,118 requirements.
6.How does Aetrix verify that 74LVC4245ABQ,118 is sourced from the original manufacturer or authorized distributors?
All 74LVC4245ABQ,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 74LVC4245ABQ,118 meets industry standards.
7.What is the process for return or replacement of 74LVC4245ABQ,118?
All 74LVC4245ABQ,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC4245ABQ,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 74LVC4245ABQ,118 part is unused and in its original packaging.
Return procedure for 74LVC4245ABQ,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVC4245ABQ,118 Tags
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