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onsemi NLV74HC240ADWR2G
- Part No.:
- NLV74HC240ADWR2G
- Manufacturer:
- onsemi
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
NLV74HC240ADWR2G.pdf
- Description:
- IC BUFFER INVERT 6V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,448
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Product details
Overview
NLV74HC240ADWR2G from onsemi is an octal 3-state inverting buffer/line driver with dual active-low output enables, operating across 2.0–6.0 V supply, delivering ±7.8 mA output drive at 6 V, and supporting −55°C to +125°C industrial temperature range for memory address buffering and clock distribution systems.
For engineers reviewing the NLV74HC240ADWR2G datasheet, pinout, applications, or equivalent options, this page delivers verified pin functions, JEDEC-compliant CMOS timing behavior, SOIC-20W package dimensions, and validated automotive-grade alternatives for high-reliability bus interface design.
Technical Context
The NLV74HC240ADWR2G implements eight independent inverting logic channels split into two groups (A and B), each controlled by a dedicated active-low enable (Enable A on Pin 1, Enable B on Pin 19). Outputs enter high-impedance state when either enable is high, enabling bidirectional bus sharing without external direction control.
It uses high-performance silicon-gate CMOS technology with 120 FETs per die, achieving propagation delays as low as 14 ns (tPLH/tPHL at VCC = 6.0 V) and transition times down to 10 ns, while maintaining LSTTL-compatible input thresholds and 15 LSTTL load drive capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - supports mixed-voltage system interfacing (e.g., 3.3 V logic driving 5 V bus) |
| Output Drive Current | ±7.8 mA at VCC = 6.0 V - sufficient to drive 15 LSTTL loads directly without buffers |
| Propagation Delay | 14 ns max (A→YA or B→YB, VCC = 6.0 V) - enables reliable operation in sub-70 MHz clock domains |
| Input Leakage Current | ±1.0 µA max at TA = 125°C - ensures stable logic levels in high-temperature industrial environments |
| Operating Temperature | −55°C to +125°C - qualified for under-hood automotive and extended industrial applications |
| ESD Rating | HBM > 2000 V - provides robust handling during PCB assembly and field service |
| Quiescent ICC | 160 µA max at TA = 125°C - enables low-static-power system-level power budgeting |
Pinout & Package
Package: SOIC-20 Wide (Case 751D), Pb-free, RoHS-compliant, moisture sensitivity level (MSL) Level 3.
| 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 - inverted outputs appear on YA1–YA4 (Pins 18, 16, 14, 12) |
| 11, 13, 15, 17 | B1–B4 Inputs | Inverting data inputs for second group - inverted outputs appear on YB1–YB4 (Pins 9, 7, 5, 3) |
| 3, 5, 7, 9 | YB1–YB4 Outputs | Inverted outputs for B-group - high-impedance when Enable B = high |
| 12, 14, 16, 18 | YA1–YA4 Outputs | Inverted outputs for A-group - high-impedance when Enable A = high |
| 10 | GND | Ground reference for all logic and power paths - must be low-inductance connection |
| 20 | VCC | Positive supply rail - decoupling capacitor (0.1 µF ceramic) required within 5 mm |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 3-state control | Separate Enable A and Enable B pins allow concurrent or staggered bus arbitration between two signal groups |
| LSTTL-compatible drive strength | 15 LSTTL load capability eliminates need for external line drivers in legacy TTL-to-CMOS interconnects |
| High noise immunity | CMOS input structure with VIH ≥ 3.15 V and VIL ≤ 1.35 V at VCC = 4.5 V rejects >400 mV of coupled noise |
| Automotive qualification option | NLV prefix denotes AEC-Q100 Grade 1 qualification (−40°C to +125°C) and PPAP-capable manufacturing |
| Low dynamic power consumption | CPD = 32 pF per channel enables predictable dynamic power calculation: PD = CPD × VCC² × f + ICC × VCC |
Applications
| Memory Address Buffering | Industrial PLC I/O Expansion |
|---|---|
|
Use Scenario: Driving multiplexed address lines from a microcontroller to multiple SRAM or flash devices on a shared bus. IC Role / Device Role: Octal inverting buffer with 3-state outputs isolates address lines during bus contention or standby. Use Value: Dual enable pins allow independent gating of upper/lower address nibbles, reducing address setup/hold timing constraints. |
Use Scenario: Interfacing 24 V digital I/O modules to a 3.3 V FPGA-based controller in factory automation cabinets. IC Role / Device Role: Level-shifting and bus-isolation buffer that accepts 3.3 V logic inputs and drives 5 V-tolerant optocoupler inputs. Use Value: 2.0–6.0 V operation and ±7.8 mA drive ensure clean transitions into capacitive PLC backplane traces up to 15 cm. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
|
Use Scenario: Managing discrete sensor inputs (door latch, seatbelt, ambient light) in a BCM where EMI resilience is critical. IC Role / Device Role: Noise-immune inverting buffer with high-impedance disable mode reduces current draw during sleep states. Use Value: AEC-Q100 qualification and −55°C to +125°C operation guarantee reliability in under-dash thermal environments. |
Use Scenario: Isolating DUT signals from test fixture logic analyzers and pattern generators in automated functional testers. IC Role / Device Role: Bidirectional bus buffer enabling safe probing without loading source circuits during measurement cycles. Use Value: Sub-15 ns propagation delay preserves signal integrity for digital patterns up to 35 MHz, minimizing timing skew. |
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 |
|---|---|---|---|
| MC74HC240ADWG | Same die, SOIC-20 wide rail packaging (38 units/rail); no NLV prefix - rated for −40°C to +85°C only | Not AEC-Q100 qualified; unsuitable for automotive under-hood use | Select for cost-sensitive industrial control where extended temperature is not required |
| SN74HC240N | Texas Instruments part; identical function and pinout but different AC specs - tPLH max 24 ns at 6 V vs. 14 ns for NLV74HC240ADWR2G | Lower speed margin limits use in high-frequency clock distribution | Select when TI supply chain alignment is mandatory and 24 ns delay meets system timing budget |
Compared with MC74HC240ADWG and SN74HC240N, the NLV74HC240ADWR2G offers superior temperature range (−55°C to +125°C), faster propagation (14 ns), and automotive qualification - making it the preferred choice for mission-critical embedded systems requiring long-term reliability and tight timing margins.
Availability
NLV74HC240ADWR2G is available at Aetrix Electronics and suitable for memory address buffering, industrial PLC I/O expansion, automotive body control modules, and test equipment signal conditioning requiring stable component supply across extended temperature and automotive-grade lifecycle support.
Supply support for NLV74HC240ADWR2G 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 NLV74HC240ADWR2G belongs to onsemi's HC logic family - designed for high-noise-immunity, low-power, pin-compatible replacements of legacy TTL logic in harsh-environment embedded systems.
FAQ
What is the operating temperature range of the NLV74HC240ADWR2G?
The NLV74HC240ADWR2G is specified for operation from −55°C to +125°C. This extended range is enabled by its NLV (Non-Commercial, Automotive-Grade) designation and AEC-Q100 qualification, making it suitable for under-hood automotive applications and industrial environments with severe thermal cycling. The datasheet guarantees all DC and AC parameters across this full range.
Is the NLV74HC240ADWR2G pin-compatible with standard 74HC240 devices?
Yes, the NLV74HC240ADWR2G is fully pin-compatible with industry-standard 74HC240 devices including MC74HC240A and SN74HC240. It uses identical SOIC-20 wide (Case 751D) footprint and pin assignments: Enable A (Pin 1), A1–A4 (Pins 2,4,6,8), GND (Pin 10), B1–B4 (Pins 11,13,15,17), Enable B (Pin 19), and VCC (Pin 20).
Does the NLV74HC240ADWR2G support mixed-voltage interfacing?
Yes, the NLV74HC240ADWR2G supports mixed-voltage interfacing due to its 2.0–6.0 V supply range and CMOS-compatible input thresholds. For example, it can accept 3.3 V logic inputs while powered at 5 V, and drive 5 V-tolerant loads - provided input voltages remain within −0.5 V to VCC+0.5 V per the absolute maximum ratings.
What is the maximum output current per pin for the NLV74HC240ADWR2G?
The NLV74HC240ADWR2G delivers ±7.8 mA DC output current per pin at VCC = 6.0 V, as specified in the DC Electrical Characteristics table. This allows direct driving of 15 LSTTL loads and ensures robust signal integrity into typical PCB trace capacitance and optocoupler input stages without external amplification.
How does the dual-enable architecture of the NLV74HC240ADWR2G improve system design?
The NLV74HC240ADWR2G features two independent active-low enables (Enable A on Pin 1, Enable B on Pin 19), allowing separate control of the A-group (YA1–YA4) and B-group (YB1–YB4) outputs. This enables time-multiplexed bus access, reduced contention risk, and selective power gating - for example, disabling one group during memory refresh while keeping the other active for peripheral communication.
NLV74HC240ADWR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74HC
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
NLV74HC240ADWR2G FAQ
1.How can I place an order for NLV74HC240ADWR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NLV74HC240ADWR2G 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 NLV74HC240ADWR2G reliable?
The price and inventory of NLV74HC240ADWR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NLV74HC240ADWR2G is usually 5 days.
3.What payment methods are accepted for NLV74HC240ADWR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NLV74HC240ADWR2G transactions.
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4.How is shipping managed for NLV74HC240ADWR2G?
NLV74HC240ADWR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NLV74HC240ADWR2G 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 NLV74HC240ADWR2G?
For technical support, including NLV74HC240ADWR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NLV74HC240ADWR2G requirements.
6.How does Aetrix verify that NLV74HC240ADWR2G is sourced from the original manufacturer or authorized distributors?
All NLV74HC240ADWR2G 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 NLV74HC240ADWR2G meets industry standards.
7.What is the process for return or replacement of NLV74HC240ADWR2G?
All NLV74HC240ADWR2G units undergo pre-shipment inspection (PSI). If there is an issue with NLV74HC240ADWR2G, 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 NLV74HC240ADWR2G part is unused and in its original packaging.
Return procedure for NLV74HC240ADWR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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