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Nexperia USA Inc. 74LVCH245AD-Q100J
- Part No.:
- 74LVCH245AD-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74LVCH245AD-Q100J.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
74LVCH245AD-Q100 from Nexperia is an automotive-qualified octal bus transceiver with 3-state outputs, direction control (DIR), and active-low output enable (OE). It operates from 1.2 V to 3.6 V, tolerates 5.5 V inputs, features bus hold on all data inputs, and supports partial power-down via IOFF circuitry. Used in bidirectional data buses between mixed-voltage domains (e.g., 3.3 V microcontroller ↔ 5 V peripheral) in engine control units.
For engineers reviewing the 74LVCH245AD-Q100 datasheet, 74LVCH245AD-Q100 pinout, 74LVCH245AD-Q100 application, or 74LVCH245AD-Q100 equivalent, this page delivers verified electrical parameters, SO20 package layout, AEC-Q100 Grade 1 qualification context, bus hold behavior, and real-world automotive interface use cases - not generic logic device descriptions.
Technical Context
This transceiver implements dual-bus bidirectional data flow controlled by DIR and OE pins: DIR selects direction (A→B or B→A), while OE disables all outputs into high-impedance state. Schmitt-trigger inputs tolerate slow-rising signals common in automotive harnesses, and IOFF blocks backflow current during power sequencing.
Bus hold circuitry (exclusive to LVCH variant) actively maintains last-valid logic state at each data input when un-driven, eliminating external pull resistors in CAN/LIN node interfaces and reducing PCB component count. Input voltage tolerance up to 5.5 V enables direct connection to legacy 5 V subsystems without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 3.6 V - Enables operation across low-power MCU I/O rails and standard 3.3 V systems. |
| Input Voltage Tolerance | Up to 5.5 V - Allows direct interfacing with 5 V logic without external level translation. |
| Propagation Delay (VCC = 3.3 V) | Max 6.3 ns - Supports >80 MHz data throughput in high-speed automotive serial buses. |
| IOFF Leakage Current | <±20 μA at VCC = 0 V - Prevents damaging back-current during hot-swap or partial power-down sequences. |
| Bus Hold Sustaining Current | ±75 μA at VCC = 3.0 V - Maintains stable input state under noise or floating conditions without external biasing. |
| ESD Protection | HBM >2000 V, CDM >1000 V - Meets automotive robustness requirements for assembly and field operation. |
| Operating Temperature | −40 °C to +125 °C - Qualified per AEC-Q100 Grade 1 for under-hood and transmission control applications. |
Pinout & Package
74LVCH245AD-Q100 uses the SO20 (SOT163-1) plastic small outline package: 20-pin, 7.5 mm body width, 1.27 mm lead pitch, gull-wing leads. Compatible with standard reflow and AOI inspection.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | DIR | Direction control input: LOW enables A→B data flow; HIGH enables B→A flow. |
| 2–9 | A0–A7 | Port A data I/O terminals - connect to master-side bus (e.g., MCU GPIO bank). |
| 10 | GND | Ground reference for all internal circuitry and signal return path. |
| 11–18 | B0–B7 | Port B data I/O terminals - connect to slave-side bus (e.g., sensor cluster or actuator interface). |
| 19 | OE | Active-low output enable: HIGH forces all A/B outputs into high-impedance state. |
| 20 | VCC | Primary supply rail - powers internal logic and output drivers; decoupling required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Bus hold on all data inputs | Eliminates need for external pull-up/down resistors in automotive ECU modules where trace stubs induce floating states. |
| IOFF partial power-down protection | Prevents reverse current flow when VCC is off but A/B buses remain energized - critical for fail-safe gateway designs. |
| Schmitt-trigger inputs | Enables reliable sampling of slow-rising signals from inductive sensors (e.g., crankshaft position) without added hysteresis circuitry. |
| 5.5 V tolerant inputs | Directly interfaces with legacy 5 V LIN transceivers or analog front-end ICs without level-shifting components. |
| AEC-Q100 Grade 1 qualification | Validated for continuous operation from −40 °C to +125 °C ambient - suitable for powertrain and chassis control units. |
Applications
| Engine Control Unit (ECU) Data Bridge | Body Control Module (BCM) Sensor Hub |
|---|---|
Use Scenario: Bidirectional data exchange between a 3.3 V ARM-based main controller and legacy 5 V fuel injector driver ICs. IC Role / Device Role / Timing Role: Level-translating bus transceiver managing time-critical PWM command and feedback status over shared parallel bus. Use Value: Eliminates discrete level shifters and reduces BOM count by 8 components while maintaining <6.3 ns propagation delay for closed-loop timing compliance. |
Use Scenario: Aggregating digital signals from multiple 5 V door lock actuators, window motor controllers, and mirror position sensors into a single 3.3 V microcontroller bus. IC Role / Device Role / Timing Role: Octal bidirectional buffer with bus hold, enabling glitch-free readback during intermittent wiring faults or connector vibration. Use Value: Bus hold prevents spurious transitions during harness disconnection events; IOFF protects against backfeed during BCM sleep/wake transitions. |
| Advanced Driver Assistance System (ADAS) Camera Interface | Electric Power Steering (EPS) Motor Controller |
Use Scenario: Isolating MIPI CSI-2 bridge logic (3.3 V) from 5 V image sensor power domain while sharing control/status lines. IC Role / Device Role / Timing Role: Direction-controlled transceiver synchronizing register access and interrupt signaling between voltage-isolated subsystems. Use Value: Schmitt-trigger inputs reject EMI-induced noise on long flex cables; 5.5 V tolerance avoids damage from camera module power surge events. |
Use Scenario: Interfacing torque sensor SPI outputs (5 V) and MCU GPIOs (3.3 V) in motor phase current monitoring circuitry. IC Role / Device Role / Timing Role: High-reliability bus translator ensuring deterministic timing for safety-critical current sampling triggers. Use Value: AEC-Q100 qualification guarantees operation at 125 °C junction temperature; IOFF prevents latch-up during EPS system reset sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC245AD-Q100 | No bus hold; lower input hysteresis; identical pinout and voltage specs. | Requires external pull resistors in floating-input scenarios; less robust in noisy harness environments. | Select when cost sensitivity outweighs need for bus hold and higher noise immunity. |
| SN74LVC245AQPWRQ1 | TSSOP20 package (SOT360-1); same electrical specs; no side-wettable flanks. | Lower thermal resistance than SO20 but lacks AOI-compatible solder joint inspection capability. | Choose for space-constrained PCB layouts where automated optical inspection is not mandated. |
Compared with 74LVC245AD-Q100 and SN74LVC245AQPWRQ1, the 74LVCH245AD-Q100 uniquely combines bus hold functionality, SO20 side-wettable flanks for automotive AOI, and identical AEC-Q100 qualification - making it optimal for high-reliability, production-ready ECU designs requiring zero external biasing and full process traceability.
Availability
74LVCH245AD-Q100 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera interfaces, and electric power steering systems requiring stable component supply across extended temperature ranges and automotive lifecycle commitments.
Supply support for 74LVCH245AD-Q100 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 essential efficiency-enhancing components, delivering high-performance logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74LVCH245AD-Q100 belongs to Nexperia's automotive-qualified LVC/LVCH logic family, engineered specifically for robust bidirectional data bridging in harsh-temperature, mixed-voltage vehicle networks - not general-purpose logic.
FAQ
What is the function of the DIR pin on the 74LVCH245AD-Q100?
The DIR (direction) pin controls data flow direction between Port A and Port B. When DIR is LOW, data passes from A0–A7 to B0–B7; when DIR is HIGH, data flows from B0–B7 to A0–A7. This bidirectional capability eliminates the need for separate transmit/receive buffers in automotive communication gateways and sensor hubs.
Does the 74LVCH245AD-Q100 require external pull-up resistors on its data lines?
No. The 74LVCH245AD-Q100 integrates bus hold circuitry on all eight A-side and eight B-side data inputs, actively maintaining the last valid logic state without external resistors. This feature reduces component count and improves noise immunity in automotive wiring harnesses prone to intermittent opens.
How does the IOFF feature protect the device during power-down sequences?
When VCC drops to 0 V, the IOFF circuit disables all outputs and blocks current flow between powered and unpowered buses. Measured leakage is <±20 μA, preventing damaging back-current from 5 V sensor lines into a de-energized 3.3 V microcontroller domain - a critical safeguard in automotive power management architectures.
Can the 74LVCH245AD-Q100 operate with a 1.2 V supply while interfacing with 5 V inputs?
Yes. The device is fully specified from 1.2 V to 3.6 V supply and accepts input voltages up to 5.5 V regardless of VCC level. At 1.2 V operation, it maintains guaranteed VIH/VIL thresholds and supports 5 V-tolerant signaling - enabling ultra-low-power sleep-mode interfaces with wake-up-capable peripherals.
74LVCH245AD-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVCH
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74LVCH245AD-Q100J FAQ
1.How can I place an order for 74LVCH245AD-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH245AD-Q100J 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 74LVCH245AD-Q100J reliable?
The price and inventory of 74LVCH245AD-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH245AD-Q100J is usually 5 days.
3.What payment methods are accepted for 74LVCH245AD-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCH245AD-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVCH245AD-Q100J?
74LVCH245AD-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCH245AD-Q100J 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 74LVCH245AD-Q100J?
For technical support, including 74LVCH245AD-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH245AD-Q100J requirements.
6.How does Aetrix verify that 74LVCH245AD-Q100J is sourced from the original manufacturer or authorized distributors?
All 74LVCH245AD-Q100J 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 74LVCH245AD-Q100J meets industry standards.
7.What is the process for return or replacement of 74LVCH245AD-Q100J?
All 74LVCH245AD-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH245AD-Q100J, 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 74LVCH245AD-Q100J part is unused and in its original packaging.
Return procedure for 74LVCH245AD-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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