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Nexperia USA Inc. 74LVCH8T245BQ-Q10J
- Part No.:
- 74LVCH8T245BQ-Q10J
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
74LVCH8T245BQ-Q10J.pdf
- Description:
- IC TRANSLATR TXRX 5.5V 24DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:23,986
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Product details
Overview
74LVCH8T245BQ-Q10J from Nexperia is an automotive-grade 8-bit dual-supply bidirectional voltage-level translating transceiver with 3-state outputs, IOFF partial power-down protection, and active bus hold circuitry. It operates across independent VCC(A) and VCC(B) supplies (1.2 V to 5.5 V), enabling translation between 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5.0 V logic domains. Used in ADAS domain controllers for SPI/parallel bus isolation between 1.8 V sensor interfaces and 3.3 V MCU subsystems.
For engineers reviewing the 74LVCH8T245BQ-Q10J datasheet, 74LVCH8T245BQ-Q10J pinout, 74LVCH8T245BQ-Q10J application, or 74LVCH8T245BQ-Q10J equivalent, this device supports high-speed bidirectional level shifting in automotive infotainment head units, battery management systems, and gateway ECUs where mixed-voltage signal integrity and AEC-Q100 Grade 1 reliability are mandatory.
Technical Context
The device implements a dual-rail CMOS architecture with separate input-reference domains: DIR and OE inputs tied to VCC(A), while B-port I/Os reference VCC(B). Direction control is edge-agnostic-DIR HIGH enables A→B data flow; DIR LOW enables B→A flow. Output enable (OE) is active-low and independently gates both ports into high-impedance state.
IOFF circuitry ensures sub-±2 μA leakage when either VCC rail is at GND, preventing backfeed during suspend mode. Bus hold circuitry maintains valid logic levels on floating A/B inputs without external pull-ups, with IBHL/IBHH currents up to ±100 μA at 3.0 V, eliminating need for discrete biasing in low-power wake-up paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | VCC(A): 1.2 V–5.5 V; VCC(B): 1.2 V–5.5 V - enables translation between any two nodes among 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-throughput sensor fusion links in automotive camera modules |
| Propagation Delay | 0.4 ns–13.6 ns (typical, depending on VCC pair) - meets timing closure for 100 MHz parallel buses in ADAS processors |
| IOFF Leakage | ±2 μA max (−40 °C to +125 °C) - guarantees safe hot-swap and partial power-down in multi-rail ECU designs |
| Bus Hold Current | ±100 μA at 3.0 V - eliminates external pull resistors on unused pins in space-constrained automotive PCBs |
| ESD Rating | HBM: >4000 V; CDM: >1000 V - exceeds AEC-Q100 stress requirements for under-hood electronics |
| Ambient Temp | −40 °C to +125 °C - qualified for engine bay and transmission control unit mounting locations |
Pinout & Package
DHVQFN24 package (SOT815-1), 3.5 × 5.5 × 0.85 mm, side-wettable flanks for AOI-compatible solder joint inspection. Exposed thermal pad (non-electrical) improves thermal resistance in high-density automotive layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 11, 12, 13 | GND | Four dedicated ground terminals reduce ground bounce and improve noise immunity in 8-bit parallel paths |
| 2 | DIR | Direction control referenced to VCC(A); HIGH = A→B, LOW = B→A - no internal pull-up/pull-down |
| 3–10 | A1–A8 | Data I/O port referenced to VCC(A); supports 1.2 V–5.5 V logic thresholds per JEDEC standards |
| 14–21 | B1–B8 | Data I/O port referenced to VCC(B); fully independent voltage domain from A-side |
| 22 | OE | Active-low output enable; asserts high-impedance on both A and B ports simultaneously |
| 23, 24 | VCC(B) | Dual VCC(B) pins lower supply impedance for B-port switching current, critical for 24 mA drive capability |
| 1, 24 | VCC(A) | VCC(A) supplied at Pin 1; Pin 24 is VCC(B) - not shared; strict separation prevents cross-rail coupling |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +125 °C operation in safety-critical automotive systems including powertrain and chassis control |
| Dual independent supply rails | VCC(A) and VCC(B) operate at different voltages simultaneously - no internal regulator or level-shifting delay penalty |
| IOFF partial power-down | Blocks damaging back-current when one supply is off - essential for modular ECU architectures with staggered power sequencing |
| Active bus hold | Maintains stable logic states on floating A/B inputs without external components - reduces BOM count and layout area |
| DHVQFN with side-wettable flanks | Enables automated optical inspection of solder joints - meets Tier-1 manufacturing traceability and zero-defect requirements |
Applications
| ADAS Camera Interface | Automotive Gateway ECU |
|---|---|
Use Scenario: Isolating MIPI CSI-2 parallel control lines between 1.8 V image sensor and 3.3 V SoC interface. IC Role / Device Role / Timing Role: Bidirectional level translator managing clock, reset, and register access signals across voltage domains. Use Value: Eliminates timing skew between translated signals; propagation delay ≤5.7 ns (3.3 V→1.8 V) ensures setup/hold compliance at 100 MHz. |
Use Scenario: Bridging CAN FD controller (3.3 V I/O) and legacy LIN transceiver (5.0 V logic) in multi-protocol gateways. IC Role / Device Role / Timing Role: Voltage-domain firewall enabling protocol coexistence without shared supply dependencies. Use Value: IOFF protection prevents CAN bus corruption during LIN subsystem power cycling; ±24 mA drive sustains robust signal integrity over 15 cm traces. |
| Battery Management System (BMS) | Infotainment Head Unit |
Use Scenario: Translating cell-monitoring ADC serial data (2.5 V) to 1.2 V microcontroller SPI interface in high-precision BMS stacks. IC Role / Device Role / Timing Role: Low-noise, low-leakage signal bridge preserving measurement accuracy during deep-sleep modes. Use Value: Sub-2 μA IOFF leakage avoids parasitic discharge of sleep-state capacitors; bus hold maintains ADC ready-state without wake-up interrupts. |
Use Scenario: Interfacing 1.5 V touch controller with 3.3 V application processor in center-stack displays. IC Role / Device Role / Timing Role: High-reliability I/O expander replacement for mixed-voltage touch sensing channels. Use Value: 420 Mbps throughput supports burst-mode coordinate updates; AEC-Q100 qualification ensures display responsiveness under thermal stress. |
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 |
|---|---|---|---|
| SN74AVC8T245RHLR | Non-automotive; rated −40 °C to +85 °C only; no AEC-Q100 qualification; IOFF not specified | Suitable for industrial HMI but not safety-critical vehicle networks | Select only for cost-sensitive non-automotive designs where temperature range and automotive qualification are not required |
| TXS0108EPRJR | Auto-direction sensing (no DIR pin); lower drive strength (±8 mA vs ±24 mA); higher propagation delay (≥12 ns) | Used in low-speed I²C/SPI bridges; unsuitable for high-speed parallel buses or high-current loads | Choose when direction control logic is unavailable or when ultra-low static power (<1 μA) outweighs speed and drive needs |
Compared with SN74AVC8T245RHLR and TXS0108EPRJR, the 74LVCH8T245BQ-Q10J uniquely delivers AEC-Q100 Grade 1 reliability, ±24 mA drive, and sub-6 ns propagation at 3.3 V↔1.8 V-making it the only option for time-critical automotive data highways requiring simultaneous voltage translation and fail-safe power sequencing.
Availability
74LVCH8T245BQ-Q10J is available at Aetrix Electronics and suitable for ADAS camera modules, battery management systems, automotive gateways, and infotainment head units requiring stable component supply across extended temperature ranges and full AEC-Q100 compliance.
Supply support for 74LVCH8T245BQ-Q10J 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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions, with leadership in automotive-grade standard products.
The 74LVCH8T245BQ-Q10J belongs to Nexperia's automotive-qualified LVC/LVCH logic family, engineered specifically for mixed-voltage signal bridging in next-generation E/E architectures where functional safety, thermal resilience, and supply flexibility are non-negotiable.
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, meaning ΔVCC can reach up to 4.3 V (e.g., VCC(A) = 1.2 V, VCC(B) = 5.5 V). No derating is required, and all DC and dynamic specs-including propagation delay and drive strength-are guaranteed across the full range per Table 5 and Table 11.
Does the device require external pull-up or pull-down resistors on DIR or OE?
No. DIR and OE have no internal termination; however, system-level pull resistors are recommended for deterministic startup behavior. The bus hold feature applies only to A1–A8 and B1–B8 pins-not control inputs-so OE and DIR must be actively driven or externally biased to avoid metastability during power-up.
How does IOFF behave when only VCC(A) is powered and VCC(B) = 0 V?
In that condition, the B-port outputs enter high-impedance OFF-state with IOZ ≤ ±2 μA (Table 7), while A-port I/Os remain functional. This allows safe isolation of the B-side bus during partial system power-down-critical for domain controller sleep/wake protocols where sensor clusters power down before the main MCU.
Can the 74LVCH8T245BQ-Q10J translate between 1.2 V and 5.0 V while maintaining 420 Mbps data rate?
No. The 420 Mbps rating applies only to 3.3 V ↔ 5.0 V translation (Section 2). At 1.2 V ↔ 5.0 V, maximum data rate drops to 75 Mbps due to reduced noise margin and slower edge rates. Actual throughput must be validated per Table 11's worst-case tpd values at the specific VCC pair used.
74LVCH8T245BQ-Q10J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVCH
- Package/Case:
- 24-VFQFN Exposed Pad
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-DHVQFN (5.5x3.5)
74LVCH8T245BQ-Q10J FAQ
1.How can I place an order for 74LVCH8T245BQ-Q10J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH8T245BQ-Q10J 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 74LVCH8T245BQ-Q10J reliable?
The price and inventory of 74LVCH8T245BQ-Q10J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH8T245BQ-Q10J is usually 5 days.
3.What payment methods are accepted for 74LVCH8T245BQ-Q10J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCH8T245BQ-Q10J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVCH8T245BQ-Q10J?
74LVCH8T245BQ-Q10J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCH8T245BQ-Q10J 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 74LVCH8T245BQ-Q10J?
For technical support, including 74LVCH8T245BQ-Q10J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH8T245BQ-Q10J requirements.
6.How does Aetrix verify that 74LVCH8T245BQ-Q10J is sourced from the original manufacturer or authorized distributors?
All 74LVCH8T245BQ-Q10J 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 74LVCH8T245BQ-Q10J meets industry standards.
7.What is the process for return or replacement of 74LVCH8T245BQ-Q10J?
All 74LVCH8T245BQ-Q10J units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH8T245BQ-Q10J, 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 74LVCH8T245BQ-Q10J part is unused and in its original packaging.
Return procedure for 74LVCH8T245BQ-Q10J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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