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onsemi 74LCX07BQX
- Part No.:
- 74LCX07BQX
- Manufacturer:
- onsemi
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74LCX07BQX.pdf
- Description:
- IC BUF NON-INVERT 5.5V 14DQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,260
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Product details
Overview
74LCX07BQX from ON Semiconductor is a low-voltage hex buffer with six open-drain outputs, designed for level-shifting between 3V and 5V systems. It features 5V-tolerant inputs, operates from 2.3V to 5.5V VCC, delivers ≤2.9ns propagation delay at 3.3V, supports +24mA output drive at 3.0V, and uses a leadless 14-terminal DQFN (2.5 × 3.0 mm) package.
For engineers reviewing the 74LCX07BQX datasheet, pinout, applications, or equivalent options, key selection criteria include open-drain wire-AND/OR capability, power-down high-impedance behavior, JEDEC MO-241-compliant DQFN packaging, 5V input tolerance in sub-3.3V systems, and latch-up immunity per JEDEC 78.
Technical Context
The 74LCX07BQX implements six independent non-inverting buffers with open-drain outputs, enabling active-HIGH wire-AND and active-LOW wire-OR bus configurations. Its input structure tolerates up to 7V, allowing safe interfacing of 5V logic signals into 2.3–3.6V supply domains without external level shifters.
Each output supports programmable pull-up via external resistors and exhibits low VOL (≤0.55V at IOL = 24mA, VCC = 3.0V) and high sink current capability. Power-down mode places both inputs and outputs in high-impedance state, minimizing leakage (<10µA IOFF) when VCC = 0V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3V to 5.5V - Enables operation across 2.5V, 3.3V, and 5V logic domains with single-supply flexibility. |
| tPD Max | 2.9ns at VCC = 3.3V, CL = 50pF - Supports >300MHz signal routing in high-speed digital interfaces. |
| IOL Max | +24mA at VCC = 3.0V - Drives standard 5V TTL loads or multiple CMOS inputs with margin. |
| Input Tolerance | Up to 7V DC - Allows direct connection to 5V buses while powered from 2.3–3.6V supplies, eliminating level translators. |
| ICC Max | 10µA at VCC = 2.3–5.5V - Ensures ultra-low static power in battery-backed or always-on control logic. |
| ESD Rating | HBM > 2000V - Provides robust handling during PCB assembly and field service without special ESD precautions. |
Pinout & Package
74LCX07BQX uses a 14-terminal depopulated quad flat no-lead (DQFN) package per JEDEC MO-241 (MLP14A), measuring 2.5 × 3.0 mm with 0.5 mm pitch. The exposed die attach pad (DAP) is electrically unconnected and intended for thermal enhancement only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (A1–A6) | CMOS-compatible logic inputs accepting 0–7V; internally clamped for 5V-tolerance. |
| 2, 4, 6, 10, 12, 14 | Open-Drain Output (Y1–Y6) | Active-low sinking outputs requiring external pull-up; support wired logic and bus arbitration. |
| 7 | GND | Ground reference for all internal circuitry and I/O structures. |
| 14 | VCC | Primary power supply pin; decoupling capacitor must be placed within 3 mm. |
| DAP | No Connect (NC) | Exposed thermal pad; soldered to PCB ground plane for improved thermal dissipation only. |
Key Features
| Feature | Design Value |
|---|---|
| 5V-tolerant inputs | Accepts 5V logic signals while operating from 2.3–3.6V supply - eliminates discrete level-shifter ICs in mixed-voltage systems. |
| Open-drain outputs | Enables shared-bus architectures (e.g., I²C, SMBus, interrupt lines) via external pull-up without contention or shoot-through risk. |
| Power-down high-Z | Enters tri-state on all inputs/outputs when VCC = 0V - prevents back-driving and leakage in hot-swap or standby modes. |
| Latch-up immunity | Exceeds JEDEC 78 Class II (±100mA) - ensures reliability under transient overvoltage or ESD events in industrial environments. |
| Leadless DQFN package | 2.5 × 3.0 mm footprint with 0.5 mm pitch - saves >60% board area vs. SOIC-14 while supporting automated reflow and high-density routing. |
Applications
| Industrial Control Bus Interface | I²C/SMBus Level Translation |
|---|---|
|
Use Scenario: Interfacing 5V PLC I/O modules with 3.3V microcontroller-based central controllers in factory automation systems. IC Role / Device Role / Timing Role: Hex buffer provides isolated, direction-controlled voltage translation for discrete status and command lines. Use Value: Eliminates need for six discrete MOSFET translators; 5V-tolerant inputs withstand legacy sensor outputs; open-drain outputs simplify wired-OR fault signaling. |
Use Scenario: Bridging 5V EEPROMs and 3.3V host processors on embedded system motherboards. IC Role / Device Role / Timing Role: Acts as bidirectional level translator for SDA/SCL lines using pull-up resistors on both sides. Use Value: Supports full I²C specification timing (≤400kHz) with <2.9ns tPD; open-drain architecture preserves bus arbitration and clock stretching behavior. |
| Hot-Swappable Card Detection | LED Driver Interface |
|
Use Scenario: Detecting insertion/removal of PCIe add-in cards in telecom server backplanes with 3.3V management ASICs. IC Role / Device Role / Timing Role: Buffers card-present sense signals from 5V slot power rails to 3.3V supervisor logic. Use Value: Withstands 7V input transients during hot-plug; power-down high-Z prevents backfeed when card is removed and VCC drops. |
Use Scenario: Driving multiplexed LED displays where common-anode segments require active-low sinking control. IC Role / Device Role / Timing Role: Six open-drain outputs directly sink LED currents up to 24mA each at 3.0V VCC. Use Value: Delivers sufficient sink current without external transistors; low VOL (≤0.55V) minimizes power loss and heat generation per segment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex open-drain buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC07APWR | 3.3V-only VCC range (1.65–3.6V); no 5V input tolerance; 14-TSSOP package (4.4mm wide). | Requires external level-shifting for 5V inputs; unsuitable for direct 5V-to-3.3V interface without added components. | Select when system operates exclusively at 3.3V and board space allows larger TSSOP footprint. |
| 74AHC07PW,118 | Higher VCC range (2.0–5.5V); push-pull outputs (not open-drain); SO14 package (3.9mm wide). | Cannot implement wired-logic functions; incompatible with I²C or shared interrupt lines due to active-high outputs. | Select only for simple unidirectional buffering where open-drain functionality is unnecessary and 5V-tolerance is not required. |
Compared with SN74LVC07APWR and 74AHC07PW,118, the 74LCX07BQX uniquely combines 5V-tolerant inputs, true open-drain outputs, and ultra-compact DQFN packaging - making it the only option among the three that enables direct 5V-to-3.3V bus interfacing without redesign or additional components.
Availability
74LCX07BQX is available at Aetrix Electronics and suitable for industrial control bus interface, I²C/SMBus level translation, hot-swappable card detection, and LED driver interface applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for 74LCX07BQX 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, logic, and sensor solutions for automotive, industrial, cloud computing, and IoT applications.
The 74LCX07BQX belongs to ON Semiconductor's legacy LCX logic family, engineered for mixed-voltage system interoperability - specifically targeting voltage translation, bus isolation, and low-power interface bridging in resource-constrained embedded designs.
FAQ
What is the maximum input voltage rating for 74LCX07BQX?
The 74LCX07BQX supports DC input voltages up to 7.0V, independent of VCC. This 5V-tolerant feature allows direct connection to 5V logic buses even when powered from 2.3V–3.6V supplies - a key enabler for mixed-voltage system design without external level shifters. Absolute maximum VI rating is specified as –0.5V to +7.0V.
Does 74LCX07BQX support hot-swap or power-down operation?
Yes, the 74LCX07BQX enters a high-impedance state on all inputs and outputs when VCC = 0V, preventing back-driving and leakage currents during hot-swap events or system standby. Power-off leakage (IOFF) is limited to 10µA at VO = 5.5V, ensuring safe operation in partial-power-down configurations typical in modular electronics.
What package type and dimensions does 74LCX07BQX use?
The 74LCX07BQX uses a 14-terminal depopulated quad flat no-lead (DQFN) package per JEDEC MO-241, designated MLP14A. Its footprint measures 2.5 mm × 3.0 mm with 0.5 mm pitch and includes an exposed die attach pad (DAP) for thermal enhancement. This package is lead-free and compatible with standard reflow soldering profiles.
Can 74LCX07BQX be used for I²C bus level translation?
Yes, the 74LCX07BQX is suitable for unidirectional I²C level translation (e.g., 3.3V controller to 5V slave) using open-drain topology. Its 2.9ns max propagation delay at 3.3V and low VOL (≤0.55V at 24mA) meet timing and voltage thresholds for standard-mode (100kHz) and fast-mode (400kHz) I²C. External pull-ups are required on both sides of the interface.
What is the output drive capability of 74LCX07BQX at 3.0V VCC?
At VCC = 3.0V, the 74LCX07BQX guarantees +24mA sink current per output (IOL) with VOL ≤ 0.55V. This enables direct driving of multiple 5V TTL loads, LED segments, or pull-down functions in industrial control and display interfaces without external transistor buffering - reducing BOM count and layout complexity.
74LCX07BQX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74LCX
- Package/Case:
- 14-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 6
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- Open Drain
- Current - Output High, Low:
- -, 32mA
- Voltage - Supply:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DQFN (3x2.5)
74LCX07BQX FAQ
1.How can I place an order for 74LCX07BQX through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LCX07BQX 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 74LCX07BQX reliable?
The price and inventory of 74LCX07BQX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LCX07BQX is usually 5 days.
3.What payment methods are accepted for 74LCX07BQX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LCX07BQX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LCX07BQX?
74LCX07BQX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LCX07BQX 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 74LCX07BQX?
For technical support, including 74LCX07BQX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LCX07BQX requirements.
6.How does Aetrix verify that 74LCX07BQX is sourced from the original manufacturer or authorized distributors?
All 74LCX07BQX 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 74LCX07BQX meets industry standards.
7.What is the process for return or replacement of 74LCX07BQX?
All 74LCX07BQX units undergo pre-shipment inspection (PSI). If there is an issue with 74LCX07BQX, 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 74LCX07BQX part is unused and in its original packaging.
Return procedure for 74LCX07BQX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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