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onsemi MC74LVX240DTR2G
- Part No.:
- MC74LVX240DTR2G
- Manufacturer:
- onsemi
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC74LVX240DTR2G.pdf
- Description:
- IC BUFFER INVERT 3.6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MC74LVX240DTR2G from onsemi is an advanced high-speed CMOS octal bus buffer with inverting 3-state outputs, dual active-low output enables (1OE, 2OE), and 5V-tolerant inputs up to 7.0 V. It supports mixed-voltage interfacing between 3.0 V and 5.0 V systems and delivers 4.3 ns typical propagation delay at 3.3 V, making it suitable for address/data bus driving in low-power embedded controllers and memory subsystems.
For engineers reviewing the MC74LVX240DTR2G datasheet, pinout, applications, or equivalent options, key selection criteria include 3-state timing (tPLZ/tPHZ ≤ 13.0 ns), input voltage tolerance (−0.5 V to +7.0 V), output drive capability (±25 mA per pin), and TSSOP-20 package compatibility with space-constrained PCB layouts.
Technical Context
The MC74LVX240DTR2G implements two independent 4-bit inverting 3-state buffers, each controlled by its own enable (1OE/2OE). Its input structure includes power-down protection and ESD robustness (>2000 V HBM), enabling hot-swap and mixed-supply operation without external clamping.
All eight outputs are fully 3-state controllable with balanced high/low propagation delays (tPLH/tPHL ≤ 9.7 ns at 3.3 V, CL = 50 pF) and low output skew (≤1.5 ns), ensuring deterministic timing across parallel data paths in synchronous bus architectures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0 V to 3.6 V - Supports core logic supply in battery-powered and low-voltage industrial systems. |
| tPD (Typ) | 4.3 ns at VCC = 3.3 V, CL = 15 pF - Enables >100 MHz bus operation with margin for trace delays. |
| Input Voltage Range | −0.5 V to +7.0 V - Allows direct connection to 5 V signals without level shifters in 3.3 V systems. |
| IOUT (Max) | ±25 mA per output - Drives standard TTL loads and multiple CMOS inputs without buffering. |
| ICC (Max) | 4.0 µA at TA = 25°C - Minimizes quiescent power in always-on control logic and standby modes. |
| ESD Rating | HBM > 2000 V, MM > 200 V - Ensures robustness during board handling and system integration. |
| Operating Temp | −40°C to +85°C - Qualified for industrial temperature environments without derating. |
Pinout & Package
TSSOP-20 (Case 948E) package: 6.5 mm × 4.4 mm × 1.2 mm body, 0.65 mm pitch, gull-wing leads, Pb-free (RoHS compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low output enable controls first/second 4-bit buffer group independently. |
| 2, 4, 6, 8 | 1D0–1D3 | Inverting data inputs for first buffer group; tolerate up to 7.0 V regardless of VCC. |
| 18, 16, 14, 12 | 1O0–1O3 | Inverting 3-state outputs for first group; high-impedance when 1OE = HIGH. |
| 17, 15, 13, 11 | 2D0–2D3 | Inverting data inputs for second buffer group; electrically identical to 1Dn pins. |
| 3, 5, 7, 9 | 2O0–2O3 | Inverting 3-state outputs for second group; driven only when 2OE = LOW. |
| 20 | VCC | Positive supply (2.0–3.6 V); decoupling capacitor required within 10 mm. |
| 10 | GND | Ground reference; must be connected to low-impedance system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| 5V-tolerant inputs | Accepts 0–5.5 V logic levels while powered from 2.0–3.6 V, eliminating external level translators in mixed-voltage buses. |
| Balanced tPLH/tPHL | ≤1.5 ns skew between any two outputs ensures simultaneous edge transitions for reliable parallel data capture. |
| Low dynamic noise | VOLP ≤ 0.8 V (max) reduces ground bounce and crosstalk in dense PCB layouts with shared return paths. |
| Power-down input protection | Inputs remain high-impedance and non-latching when VCC = 0 V, preventing back-drive damage during power sequencing. |
| Pb-free & RoHS | Meets EU RoHS Directive 2011/65/EU and JEDEC J-STD-020 reflow profile for lead-free assembly. |
Applications
| Memory Address Buffering | Microcontroller Bus Expansion |
|---|---|
|
Use Scenario: Driving 16-bit address lines from a 3.3 V microcontroller to external SRAM or flash memory operating at 5 V. IC Role / Device Role / Timing Role: Inverting 3-state buffer isolating MCU address bus from memory; enables bidirectional bus sharing via OE control. Use Value: Eliminates need for discrete level shifters while maintaining <4.3 ns propagation delay and ±25 mA drive strength per line. |
Use Scenario: Expanding GPIO count on a low-power ARM Cortex-M0+ MCU using parallel I/O peripherals. IC Role / Device Role / Timing Role: Octal inverting buffer providing additional 3-state-controlled outputs synchronized to MCU clock domain. Use Value: Delivers deterministic 3-state disable timing (tPHZ ≤ 13.0 ns) for glitch-free peripheral enable/disable sequencing. |
| Industrial PLC I/O Module | Automotive Body Control Unit |
|
Use Scenario: Interfacing 3.3 V FPGA logic to legacy 5 V sensor interface cards in programmable logic controllers. IC Role / Device Role / Timing Role: Voltage-tolerant bus buffer enabling safe signal translation without external biasing or clamping diodes. Use Value: Withstands −0.5 V to +7.0 V input transients and operates across −40°C to +85°C, meeting IEC 61000-4-2 immunity requirements. |
Use Scenario: Isolating CAN controller address/data bus from 5 V display driver ICs in automotive dashboard electronics. IC Role / Device Role / Timing Role: Dual-enable octal buffer allowing independent gating of display and communication subsystems under MCU control. Use Value: Low ICC (4.0 µA max) extends battery runtime in always-on modules; ESD rating exceeds ISO 10605 automotive test requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC240APWR | Wider VCC range (1.65–3.6 V); slightly higher ICC (10 µA max); same TSSOP-20 footprint. | Supports lower-voltage operation down to 1.65 V but lacks 7.0 V input tolerance - requires external clamping for 5 V signals. | Select when system uses sub-2.0 V supplies or needs tighter VOL/VOLP specs; verify input protection circuitry for 5 V interfaces. |
| 74LVX240MTCX | SOIC-20 package (7.5 mm × 5.3 mm); identical electrical specs and pinout; higher thermal resistance (θJA = 120°C/W vs. 180°C/W). | Better suited for through-hole prototyping or legacy board designs requiring SOIC; less optimal for high-density surface-mount layouts. | Choose for manual assembly, rework-friendly packaging, or compatibility with existing SOIC footprints - no redesign needed. |
Compared with SN74LVC240APWR and 74LVX240MTCX, the MC74LVX240DTR2G uniquely combines 7.0 V input tolerance with TSSOP-20 compactness and ultra-low ICC, making it optimal for space-constrained, mixed-voltage industrial control boards where level-shifter elimination and standby power matter.
Availability
MC74LVX240DTR2G is available at Aetrix Electronics and suitable for memory subsystems, microcontroller bus expansion, industrial PLC I/O modules, and automotive body control units requiring stable component supply and long-term industrial lifecycle support.
Supply support for MC74LVX240DTR2G 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 (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The MC74LVX240DTR2G belongs to the LVX logic family designed specifically for low-voltage, high-speed, mixed-signal interfacing in power-sensitive embedded systems with stringent ESD and voltage-tolerance requirements.
FAQ
What is the maximum input voltage the MC74LVX240DTR2G can safely tolerate?
The MC74LVX240DTR2G supports DC input voltages from −0.5 V to +7.0 V, independent of VCC. This allows direct connection to 5 V signals while operating from a 3.3 V supply without external clamping components. The specification is validated per the Absolute Maximum Ratings table in the official onsemi datasheet Rev. 5 (November 2024), and applies to all input pins including 1Dn and 2Dn.
Does the MC74LVX240DTR2G support true 3-state operation with simultaneous high-impedance outputs?
Yes, the MC74LVX240DTR2G provides true 3-state outputs: when either 1OE or 2OE is HIGH, the corresponding four outputs (1On or 2On) enter high-impedance mode with leakage current ≤ ±2.5 µA (max) at VCC = 3.6 V. Both enables can be asserted simultaneously to place all eight outputs in high-Z, verified in the DC Electrical Characteristics table under IOZ parameter.
What is the recommended decoupling strategy for the MC74LVX240DTR2G in high-speed designs?
Place a 100 nF X7R ceramic capacitor between VCC (pin 20) and GND (pin 10), located within 10 mm of the device. For systems with fast switching loads, add a 1 µF bulk capacitor nearby. This configuration suppresses supply noise and maintains stable VCC during output transitions, as confirmed by onsemi's layout guidelines in the "PCB Layout Considerations" section of the MC74LVX240 datasheet.
Can the MC74LVX240DTR2G be used in automotive applications requiring AEC-Q100 qualification?
No, the MC74LVX240DTR2G is not AEC-Q100 qualified. It is rated for industrial temperature (−40°C to +85°C) and meets general reliability standards (e.g., >300 mA latchup immunity, >2000 V HBM ESD), but lacks the stress testing, failure analysis, and documentation required for automotive-grade qualification. For AEC-Q100-compliant alternatives, consult onsemi's Automotive Logic portfolio.
How does the propagation delay of the MC74LVX240DTR2G vary with load capacitance?
At VCC = 3.3 V, the MC74LVX240DTR2G exhibits tPD = 4.3 ns (typ) with CL = 15 pF and tPD = 6.8 ns (typ) with CL = 50 pF. This 2.5 ns increase reflects capacitive loading impact on edge rate, as documented in the AC Electrical Characteristics table. Designers should use the 50 pF value for worst-case timing closure in dense routing environments.
MC74LVX240DTR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74LVX
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- 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:
- 4mA, 4mA
- Voltage - Supply:
- 2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
MC74LVX240DTR2G FAQ
1.How can I place an order for MC74LVX240DTR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74LVX240DTR2G 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 MC74LVX240DTR2G reliable?
The price and inventory of MC74LVX240DTR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74LVX240DTR2G is usually 5 days.
3.What payment methods are accepted for MC74LVX240DTR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74LVX240DTR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74LVX240DTR2G?
MC74LVX240DTR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74LVX240DTR2G 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 MC74LVX240DTR2G?
For technical support, including MC74LVX240DTR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74LVX240DTR2G requirements.
6.How does Aetrix verify that MC74LVX240DTR2G is sourced from the original manufacturer or authorized distributors?
All MC74LVX240DTR2G 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 MC74LVX240DTR2G meets industry standards.
7.What is the process for return or replacement of MC74LVX240DTR2G?
All MC74LVX240DTR2G units undergo pre-shipment inspection (PSI). If there is an issue with MC74LVX240DTR2G, 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 MC74LVX240DTR2G part is unused and in its original packaging.
Return procedure for MC74LVX240DTR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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