My Inquiry
My Account
Nexperia USA Inc. 74LVC245ABQ-Q100X
- Part No.:
- 74LVC245ABQ-Q100X
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
74LVC245ABQ-Q100X.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 20DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,094
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74LVC245ABQ-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 supply, tolerates 5.5 V inputs, supports mixed-voltage interfacing (3.3 V ↔ 5 V), and features IOFF partial power-down protection. Used in automotive infotainment data buses for bidirectional level translation between microcontroller peripherals and legacy 5 V subsystems.
For engineers reviewing the 74LVC245ABQ-Q100 datasheet, 74LVC245ABQ-Q100 pinout, 74LVC245ABQ-Q100 application, or 74LVC245ABQ-Q100 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, DHVQFN20 package with side-wettable flanks, 1.2–3.6 V VCC range, 5.5 V input overvoltage tolerance, and IOFF-enabled safe power sequencing in automotive ECUs.
Technical Context
This device implements a dual-bus, bidirectional 8-bit data path controlled by DIR and OE signals. Its CMOS architecture enables direct TTL-level interfacing and Schmitt-trigger inputs tolerate slow-rising signals common in automotive harnesses. The IOFF circuit actively disables outputs during power-down, blocking backflow current when VCC = 0 V.
It complies with JEDEC standards JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), and JESD8-C/JESD36 (2.7–3.6 V), and meets AEC-Q100 Grade 1 requirements (−40 °C to +125 °C ambient). Bus hold functionality is present only on the 74LVCH245A variant-not on this 74LVC245A part-so no bus hold currents apply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.2 V to 3.6 V - Enables operation across low-power MCU I/O domains and standard 3.3 V logic rails. |
| Input Voltage Max | 5.5 V - Allows safe connection to 5 V sources without level shifters in mixed-voltage systems. |
| Propagation Delay | 1.5 ns (min) to 8.0 ns (max) at VCC = 3.0–3.6 V - Supports high-speed bidirectional data transfer in CAN/FlexRay peripheral interfaces. |
| IOFF Leakage | ±10 μA max at VCC = 0 V - Prevents damaging back-current during hot-swap or partial power-down sequences in automotive modules. |
| ESD Rating | HBM >2000 V, CDM >1000 V - Meets automotive board-level ESD robustness requirements per ISO 10605. |
| Operating Temp | −40 °C to +125 °C - Qualified for under-hood and transmission-control module environments. |
| Package | DHVQFN20 (SOT764-1), 2.5 × 4.5 × 0.85 mm - Thermally enhanced, AOI-compatible package for high-reliability automotive PCB assembly. |
Pinout & Package
DHVQFN20 package (SOT764-1) with 20 terminals, side-wettable flanks for automated optical inspection, thermal pad exposed on underside (non-electrical, floating or GND-connected per design).
| Pin/Terminal | 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 bidirectional I/O pins - connect to local controller bus (e.g., MCU GPIO bank). |
| 10 | GND | Ground reference (0 V) - must be solidly connected to PCB ground plane for noise immunity. |
| 11–18 | B0–B7 | Port B bidirectional I/O pins - interface to external 5 V subsystem (e.g., sensor cluster or display driver). |
| 19 | OE | Active-low output enable: LOW enables transceiver; HIGH forces all A/B pins into high-impedance state. |
| 20 | VCC | Supply voltage input (1.2–3.6 V) - requires local 100 nF ceramic decoupling adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 certified - validated for −40 °C to +125 °C operation in safety-critical vehicle systems. |
| Mixed-Voltage Translation | 5.5 V tolerant inputs/outputs with 1.2–3.6 V VCC - eliminates need for external level shifters between 3.3 V MCUs and 5 V legacy peripherals. |
| IOFF Partial Power-Down | Outputs disabled and leakage limited to ±10 μA when VCC = 0 V - prevents backfeed damage during system sleep or brown-out conditions. |
| Schmitt-Trigger Inputs | Hysteresis ≥0.3 V typical - rejects noise and accommodates slow edge rates from long cables or unbuffered sensors in automotive harnesses. |
| DHVQFN Thermal Performance | RθJA ≈ 78 °C/W (typical) - supports sustained 24 mA drive capability without derating in compact ECU layouts. |
Applications
| Automotive Infotainment Data Bridge | ADAS Camera Interface Buffer |
|---|---|
Use Scenario: Bidirectional data exchange between a 3.3 V SoC and legacy 5 V audio codec or display timing controller in head-unit designs. IC Role / Device Role / Timing Role: Level-translating octal bus transceiver managing parallel control/data lines (e.g., I²S MCLK, LRCLK, SDATA) with precise direction and enable timing. Use Value: Eliminates discrete level-shifter arrays, reduces BOM count by 7+ components, and ensures glitch-free handshaking during mode transitions via synchronized DIR/OE control. |
Use Scenario: Isolating MIPI CSI-2 bridge logic from 5 V camera module power domain during ECU power cycling. IC Role / Device Role / Timing Role: Direction-controlled data conduit for parallel status/control signals (e.g., reset, power enable, frame sync) between camera and host processor. Use Value: IOFF protection prevents reverse current injection into powered-down SoC I/O banks during camera hot-plug events, meeting ISO 16750-2 transient survivability requirements. |
| Body Control Module Bus Extender | Electric Power Steering (EPS) Subsystem Link |
Use Scenario: Extending LIN or UART-based diagnostic bus between main BCM MCU and remote door module with 5 V actuator drivers. IC Role / Device Role / Timing Role: Transceiver enabling half-duplex serial communication across voltage domains while maintaining signal integrity over 2 m wiring harnesses. Use Value: Schmitt-trigger inputs suppress harness-induced ringing; 5.5 V tolerance avoids damage from load-dump transients up to ±100 V (clamped externally). |
Use Scenario: Interfacing torque sensor SPI output (5 V) to 3.3 V EPS motor controller MCU with strict functional safety timing constraints. IC Role / Device Role / Timing Role: Synchronous bidirectional data translator for SPI clock, MOSI, MISO, and CS lines with sub-10 ns propagation delay matching. Use Value: Propagation delay variation ≤1.5 ns (skew) ensures setup/hold compliance at 10 MHz SPI clock, supporting ASIL-B diagnostic coverage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVCH245ABQ-Q100 | Includes bus hold on all A-port inputs (75 μA hold current); identical pinout and electrical specs otherwise. | Eliminates need for external pull-ups on floating A-side inputs in systems with intermittent connectivity (e.g., detachable displays). | Select when input stability during cable disconnect or power sequencing is critical; otherwise, 74LVC245ABQ-Q100 offers lower static current. |
| SN74LVC245AQPWRQ1 | TSSOP20 package (SOT360-1); same AEC-Q100 Grade 1 rating; slightly higher RθJA (95 °C/W). | Better suited for manual rework or prototyping due to gull-wing leads; less optimal for high-density automated AOI assembly. | Choose for lab validation or low-volume builds where solder joint inspection is less critical than component handling ease. |
Compared with 74LVCH245ABQ-Q100, the base 74LVC245ABQ-Q100 saves ~2 μA static current per input but lacks bus hold; versus SN74LVC245AQPWRQ1, it delivers superior thermal performance and AOI compatibility essential for high-volume automotive production.
Availability
74LVC245ABQ-Q100 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera interfaces, and body control modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 74LVC245ABQ-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 high-volume, high-reliability logic, analog, and MOSFET solutions, with deep expertise in automotive-grade component qualification and manufacturing.
This device belongs to Nexperia's automotive-qualified LVC logic family, designed specifically for robust bidirectional voltage translation in harsh-temperature, safety-critical vehicle subsystems where power sequencing and ESD resilience are mandatory.
FAQ
Is the 74LVC245ABQ-Q100 pin-compatible with the 74LVCH245ABQ-Q100?
Yes - both share identical DHVQFN20 (SOT764-1) pinout, electrical ratings, and timing specifications. The only functional difference is that the 'H' variant adds bus hold circuitry on A-port inputs; the base 74LVC245ABQ-Q100 omits this feature, reducing static current draw by ~150 μA total. No layout change is needed for substitution.
Can this transceiver safely interface a 3.3 V microcontroller with a 5 V EEPROM using I²C?
No - this is an octal bus transceiver optimized for parallel data paths (not open-drain protocols). For I²C level shifting, use dedicated bidirectional I²C translators like the NX3P2212 or PCA9306. Attempting to use 74LVC245ABQ-Q100 on I²C lines risks bus contention and violates protocol timing due to lack of slew-rate control and weak pull-up compatibility.
What is the maximum continuous output current per pin, and how is it validated?
The absolute maximum DC output current per pin is ±24 mA (per Table 6, VOH/VOL test conditions), validated at VCC = 3.0 V with guaranteed VOL ≤ 0.55 V and VOH ≥ 2.2 V. This rating applies only when all outputs switch simultaneously under worst-case thermal conditions (Tamb = +125 °C); derating is required for sustained multi-pin loading per the DHVQFN20 power dissipation curve (12.9 mW/K above 111 °C).
Does the DHVQFN20 package require solder paste stencil adjustments for side-wettable flanks?
Yes - the SOT764-1 package uses a 0.2 mm-thick thermal pad with 0.1 mm-wide side-wettable flank extensions. Recommended stencil aperture for the thermal pad is 80 % area ratio (e.g., 2.3 × 4.3 mm opening), with 0.15 mm thickness and 50 % step-down for flank pads. Reflow profile must include 60 s above 220 °C to ensure complete wetting of flank surfaces for AOI detection.
74LVC245ABQ-Q100X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVC
- 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)
74LVC245ABQ-Q100X FAQ
1.How can I place an order for 74LVC245ABQ-Q100X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC245ABQ-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 74LVC245ABQ-Q100X reliable?
The price and inventory of 74LVC245ABQ-Q100X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC245ABQ-Q100X is usually 5 days.
3.What payment methods are accepted for 74LVC245ABQ-Q100X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC245ABQ-Q100X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC245ABQ-Q100X?
74LVC245ABQ-Q100X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC245ABQ-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 74LVC245ABQ-Q100X?
For technical support, including 74LVC245ABQ-Q100X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC245ABQ-Q100X requirements.
6.How does Aetrix verify that 74LVC245ABQ-Q100X is sourced from the original manufacturer or authorized distributors?
All 74LVC245ABQ-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 74LVC245ABQ-Q100X meets industry standards.
7.What is the process for return or replacement of 74LVC245ABQ-Q100X?
All 74LVC245ABQ-Q100X units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC245ABQ-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 74LVC245ABQ-Q100X part is unused and in its original packaging.
Return procedure for 74LVC245ABQ-Q100X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVC245ABQ-Q100X Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
