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Nexperia USA Inc. 74HC240BQ-Q100,115
- Part No.:
- 74HC240BQ-Q100,115
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
74HC240BQ-Q100,115.pdf
- Description:
- IC BUFFER INVERT 6V 20DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,688
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Product details
Overview
74HC240BQ-Q100 from Nexperia is an automotive-qualified octal inverting 3-state buffer/line driver in DHVQFN20 package, operating from 2.0 V to 6.0 V supply, with propagation delay as low as 9 ns at VCC = 6.0 V and CL = 15 pF, used for bidirectional bus interfacing and signal isolation in engine control units and ADAS domain controllers.
For engineers reviewing the 74HC240BQ-Q100 datasheet, 74HC240BQ-Q100 pinout, 74HC240BQ-Q100 application, or 74HC240BQ-Q100 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification (-40 °C to +125 °C), dual independent 3-state enable control (1OE/2OE), inverting logic function per channel, high noise immunity (>40% of VCC), and compatibility with LSTTL input thresholds in HCT variant.
Technical Context
This device implements two independent groups of four inverting buffers (1A0–1A3 → 1Y0–1Y3 and 2A0–2A3 → 2Y0–2Y3), each with dedicated active-low 3-state output enable (1OE, 2OE). Outputs enter high-impedance state when respective OE is HIGH, enabling bus sharing without contention.
It uses high-speed Si-gate CMOS technology with latch-up immunity >100 mA (JESD78 Class II Level B), ESD protection exceeding 2000 V HBM and 1000 V CDM, and supports mixed-voltage interfacing across its 2.0–6.0 V supply range while maintaining TTL-compatible input thresholds in the 74HCT240 variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - Enables direct interface with 3.3 V and 5 V logic domains without level shifters. |
| Propagation Delay (tpd) | 9 ns (typ) at VCC = 6.0 V, CL = 15 pF - Supports high-speed bus buffering up to ~55 MHz data rates. |
| Output Drive Strength | ±7.8 mA (VOH/VOL) at VCC = 6.0 V - Sufficient to drive 15 pF loads with <0.4 V ground bounce under full load. |
| Input Thresholds (74HC) | VIH = 3.15 V, VIL = 1.35 V at VCC = 4.5 V - CMOS-compatible thresholds ensure noise margin >1.3 V. |
| Operating Temperature | -40 °C to +125 °C - Qualified per AEC-Q100 Grade 1 for under-hood automotive applications. |
| Power Dissipation Capacitance | 30 pF per buffer - Enables accurate dynamic power estimation (PD = CPD × VCC² × fi × N). |
| 3-State Enable Timing | ten = 11 ns, tdis = 12 ns (typ) at VCC = 6.0 V - Ensures fast bus arbitration with minimal dead time between drivers. |
Pinout & Package
DHVQFN20 package (SOT764-1): 2.5 mm × 4.5 mm × 0.85 mm body, side-wettable flanks for AOI-compatible solder joint inspection, thermally enhanced construction with exposed die pad (GND-connected per design guidance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low 3-state enable inputs - Independently disable Group 1 (pins 2,4,6,8 → 18,16,14,12) or Group 2 (pins 17,15,13,11 → 3,5,7,9). |
| 2,4,6,8 | 1A0–1A3 | Inverting data inputs for first buffer group - Logic inversion applied before driving outputs 1Y0–1Y3. |
| 18,16,14,12 | 1Y0–1Y3 | Inverting 3-state outputs for Group 1 - High-impedance when 1OE = HIGH; LOW when input HIGH and enabled. |
| 17,15,13,11 | 2A0–2A3 | Inverting data inputs for second buffer group - Electrically isolated from Group 1, sharing only VCC/GND. |
| 3,5,7,9 | 2Y0–2Y3 | Inverting 3-state outputs for Group 2 - Enables dual-bus control (e.g., CAN/CPU data paths) with independent gating. |
| 10 | GND | Ground reference - Pin 10 is functional GND; thermal pad beneath package must be connected to PCB GND plane. |
| 20 | VCC | Positive supply - Decoupling capacitor (100 nF) required within 3 mm of this pin for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40 °C to +125 °C operation with full electrical testing per automotive stress requirements. |
| Dual independent 3-state control | Separate 1OE/2OE pins allow time-multiplexed or domain-isolated bus access without external logic. |
| Side-wettable flanks (SWF) | DHVQFN20 package enables automated optical inspection (AOI) of solder joints on bottom terminals - critical for automotive manufacturing traceability. |
| High noise immunity | Typical noise margin >40% of VCC ensures robust operation in electrically noisy engine compartments. |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - prevents destructive latch-up during transient overvoltage events. |
Applications
| Engine Control Unit (ECU) Bus Isolation | ADAS Camera Interface Buffering |
|---|---|
|
Use Scenario: Isolating microcontroller GPIO banks from high-noise sensor buses in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Inverting 3-state buffer providing direction-controlled signal routing between MCU and crankshaft/camshaft position sensors. Use Value: Prevents bus contention during firmware updates; 9 ns propagation delay maintains timing integrity for 10 kHz sensor sampling clocks. |
Use Scenario: Driving MIPI CSI-2 parallel clock/data lines from image signal processor to camera module in surround-view systems. IC Role / Device Role / Timing Role: Octal inverting line driver conditioning LVCMOS signals before transmission across 15 cm flex cables. Use Value: 30 pF CPD enables precise dynamic power modeling; SWF package supports zero-defect AOI in Tier-1 camera module assembly. |
| Automotive Infotainment Display Interface | Body Control Module (BCM) I/O Expansion |
|
Use Scenario: Level-shifting and buffering RGB/Timing signals between SoC and TFT display panel in head-unit designs. IC Role / Device Role / Timing Role: Dual-group inverting buffer isolating display controller outputs from EMI-prone backlight drivers. Use Value: Independent 1OE/2OE control allows blanking synchronization; ±7.8 mA drive sustains signal integrity at 25 MHz pixel clock rates. |
Use Scenario: Expanding microcontroller I/O count to manage door lock actuators, window motors, and mirror controls. IC Role / Device Role / Timing Role: 3-state octal buffer enabling shared communication bus among multiple BCM sub-modules. Use Value: AEC-Q100 qualification ensures reliability over 15-year vehicle lifetime; 2.0–6.0 V range accommodates legacy 5 V and modern 3.3 V subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal inverting 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT240BQ-Q100 | TTL-compatible input thresholds (VIH = 2.0 V min at VCC = 4.5 V); identical pinout, package, and timing. | Better suited for mixed 5 V TTL/CMOS systems where input noise immunity is secondary to legacy compatibility. | Select when interfacing with older 5 V microcontrollers or logic families requiring guaranteed VIH ≤ 2.0 V. |
| SN74LVC240APWRQ1 | Lower VCC range (1.65–3.6 V); 32 mA drive; different pinout (TSSOP20); no SWF feature. | Optimized for 3.3 V-only automotive infotainment subsystems; lacks AEC-Q100 Grade 1 extended temperature support. | Choose only for cost-sensitive 3.3 V applications where -40 °C to +125 °C operation is not required. |
Compared with 74HCT240BQ-Q100, the HC variant offers superior noise margin but requires higher VIH; versus SN74LVC240APWRQ1, the Nexperia part delivers broader voltage flexibility, guaranteed Grade 1 operation, and AOI-ready packaging - critical for safety-critical powertrain modules.
Availability
74HC240BQ-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS camera interfaces, automotive infotainment displays, and body control modules requiring stable component supply across extended temperature ranges and automotive lifecycle commitments.
Supply support for 74HC240BQ-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 leading semiconductor manufacturer specializing in high-performance, reliable standard logic, analog, and discrete components for automotive, industrial, and consumer markets.
The 74HC240-Q100 belongs to Nexperia's automotive-qualified logic portfolio, designed specifically to meet stringent AEC-Q100 requirements for under-hood and safety-critical electronic control units.
FAQ
What is the difference between 74HC240BQ-Q100 and 74HCT240BQ-Q100?
The 74HC240BQ-Q100 uses CMOS input thresholds (VIH ≈ 0.7×VCC), offering higher noise immunity, while the 74HCT240BQ-Q100 features TTL-compatible inputs (VIH = 2.0 V fixed), enabling direct interfacing with legacy 5 V TTL logic without level shifters. Both share identical pinout, package, timing, and AEC-Q100 qualification.
Can 74HC240BQ-Q100 operate at 3.3 V supply?
Yes - it is fully specified from 2.0 V to 6.0 V. At VCC = 3.3 V, typical propagation delay is 14 ns (CL = 15 pF), VOH ≥ 2.97 V (IO = –6 mA), and VOL ≤ 0.26 V (IO = 6 mA), meeting standard 3.3 V LVTTL/LVCMOS interface requirements.
Is the exposed thermal pad on the DHVQFN20 package required to be soldered?
Per Nexperia documentation, the thermal pad (pin 1 index area) has no electrical requirement to be soldered. If soldered, it must remain floating or be connected to GND. For automotive reliability, best practice is to connect it to a dedicated GND plane via multiple vias to improve thermal dissipation and mechanical stability.
Does 74HC240BQ-Q100 support hot insertion or live bus swapping?
No - it lacks powered-off protection (Ioff) or bus-hold circuitry. Applying signals to inputs or outputs while VCC = 0 V may cause unintended current paths or latch-up. Hot-swap capability requires additional protection circuitry or devices explicitly rated for Ioff (e.g., 74LVC240A variants).
74HC240BQ-Q100,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 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)
74HC240BQ-Q100,115 FAQ
1.How can I place an order for 74HC240BQ-Q100,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC240BQ-Q100,115 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 74HC240BQ-Q100,115 reliable?
The price and inventory of 74HC240BQ-Q100,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC240BQ-Q100,115 is usually 5 days.
3.What payment methods are accepted for 74HC240BQ-Q100,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC240BQ-Q100,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC240BQ-Q100,115?
74HC240BQ-Q100,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC240BQ-Q100,115 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 74HC240BQ-Q100,115?
For technical support, including 74HC240BQ-Q100,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC240BQ-Q100,115 requirements.
6.How does Aetrix verify that 74HC240BQ-Q100,115 is sourced from the original manufacturer or authorized distributors?
All 74HC240BQ-Q100,115 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 74HC240BQ-Q100,115 meets industry standards.
7.What is the process for return or replacement of 74HC240BQ-Q100,115?
All 74HC240BQ-Q100,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC240BQ-Q100,115, 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 74HC240BQ-Q100,115 part is unused and in its original packaging.
Return procedure for 74HC240BQ-Q100,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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