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Nexperia USA Inc. 74LVCH245ABQ-Q100X
- Part No.:
- 74LVCH245ABQ-Q100X
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
74LVCH245ABQ-Q100X.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 20DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,688
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Product details
Overview
74LVCH245ABQ-Q100 from Nexperia is an automotive-grade octal bus transceiver with 3-state outputs, bidirectional data flow controlled by DIR and output enable (OE), 1.2 V to 3.6 V supply operation, 5.5 V tolerant inputs, and integrated bus hold on all data inputs. It enables level translation between 3.3 V and 5 V domains in automotive body control modules.
For engineers reviewing the 74LVCH245ABQ-Q100 datasheet, 74LVCH245ABQ-Q100 pinout, 74LVCH245ABQ-Q100 application, or 74LVCH245ABQ-Q100 equivalent, key selection criteria include IOFF-enabled partial power-down capability, Schmitt-trigger input tolerance for slow-rising signals, DHVQFN20 package with side-wettable flanks for AOI, AEC-Q100 Grade 1 qualification (-40 °C to +125 °C), and bus hold functionality unique to the LVCH variant.
Technical Context
This device implements a dual-bus, direction-controlled transceiver architecture with independent OE and DIR logic inputs. All eight data I/Os feature bus hold circuitry (LVCH variant only), eliminating external pull resistors on floating buses. The IOFF circuit actively disables outputs during power-down, blocking backflow current when VCC = 0 V.
Schmitt-trigger inputs provide hysteresis (typ. 0.3 V at VCC = 3.3 V), enabling robust operation with slow-edge microcontroller GPIO or legacy 5 V logic. Propagation delay is specified down to 1.5 ns (min) at VCC ≥ 3.0 V, with output skew limited to 1.5 ns across all eight channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage range | 1.2 V to 3.6 V - supports single-supply operation across low-voltage MCUs and mixed-voltage systems |
| Input voltage tolerance | Up to 5.5 V - allows direct interface with 5 V peripherals without level-shifting components |
| Propagation delay (tpd) | 1.5 ns (min) to 8.0 ns (max) at VCC = 3.0–3.6 V - ensures timing compliance in high-speed automotive serial buses |
| Bus hold current | ±60 μA to ±75 μA at VCC = 3.0 V - maintains valid logic state on un-driven data lines without external biasing |
| IOFF leakage | ±20 μA max at VCC = 0 V - prevents damaging back-current during hot-swap or partial power-down sequences |
| ESD rating | HBM > 2000 V, CDM > 1000 V - meets automotive board-level ESD robustness requirements |
| Ambient temperature | -40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and cabin ECUs |
Pinout & Package
DHVQFN20 package (SOT764-1): 2.5 × 4.5 × 0.85 mm body, no leads, side-wettable flanks for automated optical inspection of solder joints, thermal-enhanced construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction control input | LOW enables A→B data flow; HIGH enables B→A - determines signal path direction synchronously with OE |
| 2–9 (A0–A7) | Data port A I/O | Bidirectional bus segment A; features bus hold and 5.5 V tolerant inputs - connects to MCU or ASIC data bus |
| 10 (GND) | Ground reference | 0 V return path; internal die substrate connection - must be low-impedance for noise immunity |
| 11–18 (B0–B7) | Data port B I/O | Bidirectional bus segment B; identical electrical specs to A-side - interfaces with sensor cluster or display subsystem |
| 19 (OE) | Output enable (active LOW) | LOW enables transceiver outputs; HIGH forces all A/B pins into high-impedance - used for bus arbitration and power gating |
| 20 (VCC) | Power supply | 1.2–3.6 V core supply; powers internal logic and I/O buffers - decoupling capacitor required within 5 mm |
Key Features
| Feature | Design Value |
|---|---|
| Bus hold on all data inputs | Maintains last-valid logic state on A0–A7 and B0–B7 when un-driven - eliminates need for 10 kΩ external pull-up/down resistors |
| IOFF partial power-down | Outputs disabled and leakage limited to ±20 μA when VCC = 0 V - enables safe hot-plug operation in modular automotive architectures |
| Schmitt-trigger inputs | Input hysteresis ≥ 0.3 V at VCC = 3.3 V - rejects noise on long PCB traces or cable-connected sensors without external filtering |
| DHVQFN20 with side-wettable flanks | Enables automated optical inspection of solder joint quality on bottom terminals - improves manufacturing yield in automotive SMT lines |
| AEC-Q100 Grade 1 qualification | Validated for -40 °C to +125 °C operation with lifetime reliability testing - meets functional safety requirements for ASIL-B systems |
Applications
| Body Control Module (BCM) | Instrument Cluster Interface |
|---|---|
Use Scenario: Bidirectional data exchange between 3.3 V MCU and legacy 5 V dashboard display controller over shared parallel bus. IC Role / Device Role / Timing Role: Level-translating bus transceiver managing A/B port direction and tri-state control synchronized to display refresh cycles. Use Value: Eliminates discrete level shifters and pull resistors while maintaining <8 ns propagation delay for real-time pixel data transfer. |
Use Scenario: Isolating CAN microcontroller GPIO from 5 V analog gauge driver IC during MCU sleep mode. IC Role / Device Role / Timing Role: Bus buffer with IOFF enabling zero-leakage isolation when MCU VCC is powered down but gauge IC remains active. Use Value: Prevents back-current damage and preserves gauge state without requiring additional power sequencing circuitry. |
| Rear Occupancy Detection System | ADAS Camera Power Management |
Use Scenario: Interfacing capacitive seat sensor array (3.3 V) with 5 V signal conditioner ASIC in rear seat occupancy detection. IC Role / Device Role / Timing Role: Direction-controlled transceiver translating sensor raw data with Schmitt-trigger inputs rejecting EMI from HVAC motors. Use Value: Tolerates slow-rising sensor signals and provides bus hold to retain last-measured occupancy state during transient noise events. |
Use Scenario: Enabling/disabling high-speed parallel image data path from CMOS image sensor to SoC during camera idle periods. IC Role / Device Role / Timing Role: 3-state bus gate controlled by SoC power manager to isolate sensor domain during low-power modes. Use Value: Reduces dynamic power by cutting off sensor-to-SoC capacitance loading; DHVQFN20 thermal performance sustains burst-mode operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC245ABQ-Q100 | No bus hold; lower ICC (0.1 μA typ); identical pinout and timing | Lacks bus state retention on floating lines - requires external pull resistors in un-driven configurations | Select when cost sensitivity outweighs need for bus hold and system-level BOM simplification is not required |
| SN74LVC8T245RHLR | TSSOP20 package; higher drive strength (32 mA); non-automotive grade (industrial temp only) | Not AEC-Q100 qualified; lacks IOFF and bus hold - unsuitable for automotive power-gated domains | Use only in non-automotive industrial control where extended temperature range is not mandatory |
Compared with 74LVC245ABQ-Q100 and SN74LVC8T245RHLR, the 74LVCH245ABQ-Q100 uniquely combines AEC-Q100 Grade 1 qualification, bus hold, and IOFF in a thermally enhanced DHVQFN20 package - making it the sole option for automotive applications requiring both functional safety and hardware-level bus stability without external components.
Availability
74LVCH245ABQ-Q100 is available at Aetrix Electronics and suitable for automotive body electronics, instrument cluster interfaces, rear occupancy detection systems, and ADAS camera power management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74LVCH245ABQ-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 delivering high-performance logic, analog, and MOSFET solutions optimized for automotive, industrial, and mobile applications with emphasis on reliability and energy efficiency.
The 74LVCH245ABQ-Q100 belongs to Nexperia's automotive-qualified LVC/LVCH logic family, designed specifically for robust, low-power bidirectional data interfacing in harsh-temperature vehicle subsystems where signal integrity and fail-safe behavior are critical.
FAQ
What is the function of the DIR pin on the 74LVCH245ABQ-Q100?
The DIR (direction) pin controls bidirectional data flow: when DIR = LOW, data passes from port A (pins 2–9) to port B (pins 11–18); when DIR = HIGH, data flows from port B to port A. This logic-level control operates independently of OE and is sampled synchronously with input transitions, enabling deterministic bus arbitration in real-time automotive networks.
Does the 74LVCH245ABQ-Q100 support partial power-down operation?
Yes - its IOFF circuitry actively disables outputs and limits leakage to ±20 μA when VCC = 0 V, preventing damaging back-current from live buses into a powered-down domain. This is validated per AEC-Q100 stress tests and enables safe integration in automotive modules with staggered power sequencing, such as gateway ECUs managing multiple voltage domains.
How does bus hold functionality benefit automotive designs?
Bus hold maintains the last-valid logic state on all A0–A7 and B0–B7 pins when un-driven, eliminating the need for external 10 kΩ pull-up/down resistors. In automotive applications like seat occupancy sensors or LIN slave interfaces, this reduces BOM count, PCB area, and failure points - especially critical where vibration or thermal cycling could degrade discrete resistor solder joints.
Can the 74LVCH245ABQ-Q100 interface directly with 5 V TTL logic?
Yes - all inputs tolerate up to 5.5 V regardless of VCC (1.2–3.6 V), and outputs drive to VOH ≥ 2.2 V and VOL ≤ 0.55 V at VCC = 3.0 V with 24 mA load, meeting TTL input thresholds. This allows direct connection to legacy 5 V microcontrollers, display drivers, or sensor conditioners without external level shifters, verified across -40 °C to +125 °C operating range.
74LVCH245ABQ-Q100X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVCH
- Package/Case:
- 20-VFQFN Exposed Pad
- 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-DHVQFN (4.5x2.5)
74LVCH245ABQ-Q100X FAQ
1.How can I place an order for 74LVCH245ABQ-Q100X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH245ABQ-Q100X 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 74LVCH245ABQ-Q100X reliable?
The price and inventory of 74LVCH245ABQ-Q100X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH245ABQ-Q100X is usually 5 days.
3.What payment methods are accepted for 74LVCH245ABQ-Q100X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCH245ABQ-Q100X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVCH245ABQ-Q100X?
74LVCH245ABQ-Q100X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCH245ABQ-Q100X 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 74LVCH245ABQ-Q100X?
For technical support, including 74LVCH245ABQ-Q100X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH245ABQ-Q100X requirements.
6.How does Aetrix verify that 74LVCH245ABQ-Q100X is sourced from the original manufacturer or authorized distributors?
All 74LVCH245ABQ-Q100X 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 74LVCH245ABQ-Q100X meets industry standards.
7.What is the process for return or replacement of 74LVCH245ABQ-Q100X?
All 74LVCH245ABQ-Q100X units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH245ABQ-Q100X, 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 74LVCH245ABQ-Q100X part is unused and in its original packaging.
Return procedure for 74LVCH245ABQ-Q100X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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