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Nexperia USA Inc. 74LVCH8T245PW,118
- Part No.:
- 74LVCH8T245PW,118
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVCH8T245PW,118.pdf
- Description:
- IC TRANSLATION TXRX 5.5V 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,405
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Product details
Overview
74LVCH8T245PW,118 from Nexperia is an 8-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, OE-enabled bus isolation, and IOFF circuitry for partial power-down operation. Used in mixed-voltage system interconnects such as FPGA-to-ASIC I/O bridging, microcontroller peripheral expansion, and industrial sensor interface modules.
For engineers reviewing the 74LVCH8T245PW,118 datasheet, 74LVCH8T245PW,118 pinout, 74LVCH8T245PW,118 application, or 74LVCH8T245PW,118 equivalent, this device supports critical design tasks including voltage-domain boundary management, hot-swap-capable bus isolation, suspend-mode leakage control, and high-speed (up to 420 Mbps) bidirectional signal translation across 1.2 V/1.5 V/1.8 V/2.5 V/3.3 V/5.0 V logic families.
Technical Context
This transceiver implements true dual-rail I/O architecture: A-side pins (An, DIR, OE) are referenced to VCC(A); B-side pins (Bn) to VCC(B). Direction control is synchronous and non-latched - DIR HIGH enables An→Bn flow; DIR LOW enables Bn→An flow. Output enable (OE) is active-low and independently disables both ports into high-impedance state.
The device integrates bus-hold circuitry on all A/B data pins to maintain valid logic levels on floating inputs, eliminating external pull resistors. Its IOFF protection actively disables outputs during power-down (e.g., VCC(A) = 0 V while VCC(B) = 3.3 V), preventing damaging back-current and ensuring robustness in partial-power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range (VCC(A)/VCC(B)) | 1.2 V to 5.5 V each - enables translation between any two common logic voltages (e.g., 1.8 V ↔ 3.3 V, 2.5 V ↔ 5.0 V). |
| Max Data Rate | 420 Mbps (3.3 V → 5.0 V) - supports high-throughput interconnects in real-time embedded and industrial control systems. |
| Propagation Delay (typ) | 5.4 ns (An→Bn, VCC(A)=3.3 V, VCC(B)=5.0 V) - ensures timing-critical signal integrity in sub-10 ns timing budgets. |
| IOFF Leakage (max) | ±10 μA at -40 °C to +125 °C - guarantees safe, low-current isolation during asymmetric power sequencing. |
| Bus-Hold Current | ±100 μA (VCCI = 4.5 V) - maintains stable logic states without external biasing, reducing BOM count and layout area. |
| ESD Protection | HBM >4000 V, CDM >1000 V - meets industrial-grade robustness requirements for handling and board-level reliability. |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood automotive, motor drives, and harsh-environment industrial applications. |
Pinout & Package
TSSOP24 (SOT355-1) package: 24-pin plastic thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC(A) | A-side supply rail | Powers A-port I/O, DIR, and OE inputs; defines logic thresholds for A-side signals. |
| VCC(B) | B-side supply rail | Powers B-port I/O only; defines logic thresholds and output swing for B-side signals. |
| DIR | Direction control input | Active-HIGH selects A→B data flow; LOW selects B→A - no internal latching, fully synchronous. |
| OE | Output enable (active LOW) | Drives both A and B ports into 3-state when HIGH; enables full bus isolation during standby/suspend. |
| A1–A8 | A-port bidirectional data | 8-bit I/O referenced to VCC(A); support bus-hold and IOFF when powered down. |
| B1–B8 | B-port bidirectional data | 8-bit I/O referenced to VCC(B); electrically isolated from A-side except through transceiver core. |
| GND (pins 11,12,13) | Ground reference | All three GND pins must be connected to system ground for noise immunity and thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent supply rails | VCC(A) and VCC(B) each configurable from 1.2 V to 5.5 V - eliminates need for external level shifters in heterogeneous voltage systems. |
| IOFF partial power-down | Outputs automatically disable when either VCC is at 0 V - prevents backflow current and enables safe hot-plug operation. |
| Integrated bus-hold circuitry | Eliminates external pull-up/down resistors on all 16 data lines - reduces component count and PCB space in high-density designs. |
| Suspend mode | Enters high-impedance OFF-state when either VCC(A) or VCC(B) = GND - ensures deterministic behavior during power sequencing or fault conditions. |
| High-speed translation | 420 Mbps max rate (3.3 V → 5.0 V) with <10 ns typical propagation delay - suitable for DDR, SPI, and parallel bus interfaces. |
Applications
| FPGA-to-Microcontroller Interface | Industrial Sensor Hub |
|---|---|
|
Use Scenario: Connecting a 3.3 V FPGA I/O bank to a 1.8 V microcontroller peripheral bus with bidirectional data exchange. IC Role / Device Role / Timing Role: Level-translating transceiver managing voltage domain crossing while preserving signal timing integrity and direction control. Use Value: Enables direct interconnection without discrete resistor networks or dedicated level-shifter ICs, reducing latency and board area. |
Use Scenario: Aggregating multiple analog sensor outputs (1.8 V ADC interface) and digital sensors (3.3 V I²C) onto a single 5.0 V MCU host bus. IC Role / Device Role / Timing Role: Bidirectional voltage translator supporting mixed-signal subsystem integration with precise timing control via DIR/OE. Use Value: Eliminates need for separate unidirectional translators per sensor type, simplifying firmware and hardware design. |
| Automotive Body Control Module | Programmable Logic I/O Expansion |
|
Use Scenario: Interfacing legacy 5.0 V CAN transceiver peripherals with a modern 2.5 V domain SoC in a body control unit. IC Role / Device Role / Timing Role: Robust, high-temperature-rated transceiver providing fault-tolerant bidirectional communication across voltage domains. Use Value: Meets AEC-Q100 Grade 1 (-40 °C to +125 °C) requirements and supports IOFF during sleep mode for ultra-low quiescent current. |
Use Scenario: Expanding GPIO count of a 1.2 V ASIC using an external 3.3 V CPLD, requiring synchronized, low-latency bidirectional data transfer. IC Role / Device Role / Timing Role: High-speed, low-skew transceiver enabling deterministic read/write cycles between heterogeneous logic families. Use Value: Delivers sub-6 ns propagation delay and <14 ns enable/disable times - critical for tight-cycle programmable logic interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVCH8T245RHLR | TI part with identical 8-bit dual-supply architecture but tighter 1.2 V to 3.6 V VCC range; lower max speed (250 Mbps @ 3.3 V). | Limited to ≤3.6 V domains; not suitable for 5.0 V translation or industrial 5 V legacy interfaces. | Select when operating exclusively within 1.2 V–3.6 V ecosystems and TI supply chain preference applies. |
| TXB0308RUTR | TI auto-direction-sensing translator; no DIR pin required but lacks OE control and has higher propagation delay (>15 ns). | Eliminates direction control logic but sacrifices deterministic timing and bus-isolation capability. | Prefer for simple push-pull buses where direction is predictable; avoid in systems requiring precise OE-gated isolation or sub-10 ns timing. |
Compared with SN74AVCH8T245RHLR and TXB0308RUTR, the 74LVCH8T245PW,118 offers broader voltage coverage (up to 5.5 V), faster max speed (420 Mbps), explicit OE control for guaranteed bus isolation, and superior suspend-mode leakage performance - making it optimal for mixed-voltage industrial and automotive designs demanding timing precision and robust power sequencing.
Availability
74LVCH8T245PW,118 is available at Aetrix Electronics and suitable for FPGA interfacing, industrial sensor aggregation, automotive body control modules, and programmable logic I/O expansion requiring stable component supply across extended temperature and mixed-voltage environments.
Supply support for 74LVCH8T245PW,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 optimized for efficiency, reliability, and miniaturization in industrial, automotive, and consumer applications.
The 74LVCH8T245 belongs to Nexperia's LVC/LVCH advanced logic family, engineered specifically for low-voltage, high-speed bidirectional level translation in resource-constrained embedded systems with strict power and thermal budgets.
FAQ
What is the minimum recommended supply voltage for reliable operation?
The 74LVCH8T245PW,118 is fully specified from 1.2 V to 5.5 V on both VCC(A) and VCC(B). At 1.2 V, it delivers guaranteed functionality including bus-hold activation, IOFF protection, and 75 Mbps data rate - validated across -40 °C to +125 °C per JEDEC JESD8-7 compliance.
How does the IOFF feature behave during asymmetric power-down?
When either VCC(A) or VCC(B) drops to 0 V while the other remains powered, the IOFF circuitry forces all associated outputs into high-impedance state and limits leakage to ±10 μA maximum. This prevents back-current flow and ensures safe operation during hot-swap or partial-power scenarios.
Can DIR and OE be driven from different voltage domains than their respective VCC rails?
No - DIR and OE inputs are strictly referenced to VCC(A) and must be driven within 0 V to VCC(A). Similarly, Bn pins are referenced only to VCC(B). Cross-domain driving violates absolute maximum ratings and risks latch-up or undefined logic behavior.
Is bus-hold functionality enabled by default, and can it be disabled?
Yes - bus-hold is permanently integrated and always active on all A/B data pins; there is no enable/disable control. It draws minimal current (<200 μA per pin at 3.0 V) and eliminates need for external biasing, but cannot be deactivated via configuration or pin strapping.
74LVCH8T245PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVCH
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Translation Transceiver
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 32mA
- Voltage - Supply:
- 1.2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP
74LVCH8T245PW,118 FAQ
1.How can I place an order for 74LVCH8T245PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH8T245PW,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 74LVCH8T245PW,118 reliable?
The price and inventory of 74LVCH8T245PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH8T245PW,118 is usually 5 days.
3.What payment methods are accepted for 74LVCH8T245PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCH8T245PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVCH8T245PW,118?
74LVCH8T245PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCH8T245PW,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 74LVCH8T245PW,118?
For technical support, including 74LVCH8T245PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH8T245PW,118 requirements.
6.How does Aetrix verify that 74LVCH8T245PW,118 is sourced from the original manufacturer or authorized distributors?
All 74LVCH8T245PW,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 74LVCH8T245PW,118 meets industry standards.
7.What is the process for return or replacement of 74LVCH8T245PW,118?
All 74LVCH8T245PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH8T245PW,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 74LVCH8T245PW,118 part is unused and in its original packaging.
Return procedure for 74LVCH8T245PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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