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onsemi NLV74HC240ADWG
- Part No.:
- NLV74HC240ADWG
- Manufacturer:
- onsemi
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
NLV74HC240ADWG.pdf
- Description:
- IC BUFFER INVERT 6V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,279
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Product details
Overview
NLV74HC240ADWG from onsemi is an octal 3-state inverting buffer/line driver with dual active-low output enables, designed for memory address and clock distribution systems. It operates from 2.0 V to 6.0 V, delivers ±7.8 mA output drive at 6.0 V, and features 15 LSTTL load capability with high noise immunity. Used in industrial control backplanes and legacy TTL-to-CMOS interface circuits.
For engineers reviewing the NLV74HC240ADWG datasheet, pinout, applications, or equivalent options, this page provides verified pin assignments, JEDEC-compliant timing specs, SOIC-20W package dimensions, and validated automotive-grade alternatives for signal buffering in mixed-voltage systems.
Technical Context
The NLV74HC240ADWG implements eight independent inverting buffers, each with separate A- and B-group enable controls (pins 1 and 19), allowing selective activation of YA1–YA4 and YB1–YB4 outputs. Its CMOS silicon-gate architecture ensures compatibility with both standard CMOS and LSTTL inputs when pullup resistors are used.
Each output transitions between true inversion and high-impedance states based solely on its group enable signal-no internal logic arbitration or bus contention management is performed. Propagation delays are specified down to 14 ns at 6.0 V (tPLH/tPHL), with enable-to-output delays as low as 19 ns under same conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - supports direct interfacing with 3.3 V and 5 V logic domains without level shifters. |
| Output Drive Strength | ±7.8 mA at VCC = 6.0 V - drives 15 LSTTL loads, sufficient for fanout into multiple legacy TTL inputs. |
| Propagation Delay (A→YA) | 14 ns max at VCC = 6.0 V - enables reliable operation in sub-35 MHz clock distribution paths. |
| Input Leakage Current | ±1.0 µA max at TA = 85°C - minimizes static current draw in battery-backed or low-power hold modes. |
| ESD Withstand Voltage | >2000 V HBM - meets industrial handling requirements without additional protection circuitry. |
| Operating Temperature | –55°C to +125°C - qualified for extended-temperature industrial and automotive under-hood applications. |
| Quiescent Supply Current | 160 µA max at TA = 85°C - enables use in always-on monitoring subsystems with tight power budgets. |
Pinout & Package
Package: SOIC-20 Wide (Case 751D), 12.8 mm × 7.5 mm body, 1.27 mm pitch, Pb-free, RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | Enable A / Enable B | Active-low group enables: pin 1 controls YA1–YA4; pin 19 controls YB1–YB4. |
| 2, 4, 6, 8 | A1–A4 Inputs | Inverting data inputs for first group; drive corresponding YA outputs when Enable A = L. |
| 11, 13, 15, 17 | B1–B4 Inputs | Inverting data inputs for second group; drive corresponding YB outputs when Enable B = L. |
| 18, 16, 14, 12 | YA1–YA4 Outputs | Inverted outputs for A-group; enter high-impedance state when Enable A = H. |
| 9, 7, 5, 3 | YB1–YB4 Outputs | Inverted outputs for B-group; enter high-impedance state when Enable B = H. |
| 10 | GND | Ground reference for all input thresholds and output voltage levels. |
| 20 | VCC | Positive supply rail; must be decoupled locally per JEDEC guidelines for stable switching. |
Key Features
| Feature | Design Value |
|---|---|
| Octal Inverting Buffer Architecture | Two independent 4-bit inverting groups with separate enables-enables selective bus isolation without external gating logic. |
| 3-State Output Control | Dual active-low enables allow concurrent or staggered tri-state control of two 4-bit buses on a single 20-pin SOIC footprint. |
| LSTTL Load Compatibility | 15 LSTTL load drive capability eliminates need for external buffer stages when interfacing with legacy TTL peripherals. |
| JEDEC Std. No. 7A Compliance | Guarantees interoperability with industry-standard logic families across voltage and timing margins. |
| AEC-Q100 Qualified Variant Available | MC74HC240ADWR2G−Q variant supports automotive applications requiring PPAP documentation and controlled change management. |
Applications
| Industrial Backplane Interface | Legacy System Bus Isolation |
|---|---|
|
Use Scenario: Isolating address/data lines between a modern microcontroller and legacy ISA-style peripheral cards in factory automation PLCs. IC Role / Device Role / Timing Role: Inverting 3-state buffer providing bidirectional voltage-level translation and bus contention prevention. Use Value: Enables hot-swap capability via controlled enable sequencing and eliminates need for discrete MOSFET switches or complex bus arbiter ICs. |
Use Scenario: Driving multiple 74LS-series decoder inputs from a single 3.3 V FPGA I/O bank in test equipment mainframes. IC Role / Device Role / Timing Role: Level-shifting inverting driver with LSTTL-compatible output drive strength and guaranteed 14 ns propagation delay. Use Value: Eliminates external pull-up resistors and reduces board space versus discrete transistor-based solutions while maintaining setup/hold timing margins. |
| Automotive Sensor Hub Interface | Programmable Logic Controller I/O Expansion |
|
Use Scenario: Buffering and enabling CAN transceiver address select lines and diagnostic LED drivers in engine control modules operating at –40°C to +125°C. IC Role / Device Role / Timing Role: High-temperature-rated inverting buffer with AEC-Q100-qualified variants supporting dual-enable sequencing for fault-safe shutdown. Use Value: Provides deterministic high-Z state during ECU reset sequences, preventing spurious sensor activation or bus conflicts during power-up. |
Use Scenario: Expanding digital output capacity of a base controller by driving relay coils and optocoupler inputs in modular I/O racks. IC Role / Device Role / Timing Role: Octal inverting driver with ±7.8 mA sink/source capability per output, compatible with 5 V relay coil drive requirements. Use Value: Reduces component count versus discrete transistor arrays and improves reliability over mechanical relays for low-duty-cycle control signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC240N | Same logic function and pinout; wider commercial temperature range (–40°C to +85°C) and non-automotive qualification. | Not AEC-Q100 qualified; unsuitable for under-hood automotive use but lower cost for consumer/industrial PCBs. | Select SN74HC240N when automotive qualification is unnecessary and cost sensitivity outweighs extended temperature needs. |
| 74VHC240M | Higher speed (tPLH = 5.5 ns @ 5 V), lower ICC (2 µA typical), but narrower VCC range (2.0 V to 5.5 V) and no AEC-Q100 variant. | Preferred for high-speed data acquisition front-ends where propagation delay dominates over temperature range. | Choose 74VHC240M only when sub-10 ns timing is required and system VCC never exceeds 5.5 V. |
Compared with SN74HC240N and 74VHC240M, the NLV74HC240ADWG uniquely combines extended temperature operation (–55°C to +125°C), AEC-Q100 qualification path, and full 2.0–6.0 V supply flexibility-making it the only choice for ruggedized industrial and automotive signal buffering where reliability across voltage and thermal extremes is mandatory.
Availability
NLV74HC240ADWG is available at Aetrix Electronics and suitable for industrial backplane interfaces, automotive sensor hubs, programmable logic controller I/O expansion, and legacy system bus isolation requiring stable component supply across extended temperature ranges.
Supply support for NLV74HC240ADWG 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
onsemi is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NLV74HC240ADWG belongs to onsemi's HC logic family-designed for robust, low-power, mixed-voltage interfacing in harsh environments where reliability and long-term supply stability are critical.
FAQ
What is the maximum operating temperature for NLV74HC240ADWG?
The NLV74HC240ADWG is rated for operation from –55°C to +125°C. This extended temperature range is confirmed in the Recommended Operating Conditions table of the official onsemi datasheet (Rev. 15, July 2024), making it suitable for under-hood automotive and industrial control applications where ambient temperatures exceed standard commercial limits. The NLV74HC240ADWG maintains full DC and AC specifications across this entire range.
Does NLV74HC240ADWG support 3.3 V logic systems?
Yes, NLV74HC240ADWG fully supports 3.3 V operation. Its guaranteed operating voltage range is 2.0 V to 6.0 V, and all electrical characteristics-including VOH ≥ 3.98 V and VOL ≤ 0.26 V at VCC = 3.0 V-are explicitly specified in the datasheet's DC Electrical Characteristics table. This allows direct interfacing with 3.3 V microcontrollers and FPGAs without level-shifting circuitry.
Is NLV74HC240ADWG pin-compatible with LS240 devices?
Yes, NLV74HC240ADWG is identical in pinout to the 74LS240, as stated in the datasheet's opening paragraph: "The MC74HC240A is identical in pinout to the LS240." This allows drop-in replacement of obsolete bipolar TTL parts in legacy designs, preserving PCB layout while upgrading to CMOS benefits including lower power, higher noise immunity, and wider supply voltage tolerance.
What is the output enable behavior of NLV74HC240ADWG?
NLV74HC240ADWG has two active-low output enables: Enable A (pin 1) controls YA1–YA4, and Enable B (pin 19) controls YB1–YB4. When either enable is low, its respective four outputs invert their inputs; when high, those outputs enter high-impedance state. This dual-enable architecture allows independent control of two 4-bit buses on a single SOIC-20 package, enabling flexible bus isolation schemes not possible with single-enable octal buffers.
Are there automotive-qualified versions of NLV74HC240ADWG?
While NLV74HC240ADWG itself is not automotive-qualified, onsemi offers the functionally identical MC74HC240ADWR2G−Q variant with −Q suffix, which is AEC-Q100 qualified and PPAP capable. This part shares the same SOIC-20W package, pinout, and electrical specifications, differing only in traceability, change control, and qualification documentation-making it the designated solution for automotive production programs requiring certified components.
NLV74HC240ADWG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74HC
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- -55°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
NLV74HC240ADWG FAQ
1.How can I place an order for NLV74HC240ADWG through Aetrix?
Please submit a Request for Quotation (RFQ) for NLV74HC240ADWG 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 NLV74HC240ADWG reliable?
The price and inventory of NLV74HC240ADWG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NLV74HC240ADWG is usually 5 days.
3.What payment methods are accepted for NLV74HC240ADWG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NLV74HC240ADWG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NLV74HC240ADWG?
NLV74HC240ADWG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NLV74HC240ADWG 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 NLV74HC240ADWG?
For technical support, including NLV74HC240ADWG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NLV74HC240ADWG requirements.
6.How does Aetrix verify that NLV74HC240ADWG is sourced from the original manufacturer or authorized distributors?
All NLV74HC240ADWG 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 NLV74HC240ADWG meets industry standards.
7.What is the process for return or replacement of NLV74HC240ADWG?
All NLV74HC240ADWG units undergo pre-shipment inspection (PSI). If there is an issue with NLV74HC240ADWG, 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 NLV74HC240ADWG part is unused and in its original packaging.
Return procedure for NLV74HC240ADWG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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