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onsemi 74LCX07SJX
- Part No.:
- 74LCX07SJX
- Manufacturer:
- onsemi
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
74LCX07SJX.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 14SOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,867
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Product details
Overview
74LCX07SJX from ON Semiconductor is a low-voltage hex buffer IC with six independent open-drain outputs, designed for level-shifting between 3V and 5V logic domains. It operates from 2.3V to 5.5V VCC, tolerates 5V inputs, delivers ≤2.9ns propagation delay at 3.3V, and provides +24mA output drive at 3.0V - enabling robust bus interface in mixed-voltage embedded systems.
For engineers reviewing the 74LCX07SJX datasheet, pinout, applications, or equivalent options, key selection criteria include open-drain configurability for wired-AND/OR logic, power-down high-impedance behavior, JEDEC-compliant SOP-14 packaging, and verified 5V-tolerant input compatibility across supply voltages.
Technical Context
The 74LCX07SJX implements six non-inverting buffers with open-drain outputs, allowing external pull-up configuration to support active-HIGH wired-AND or active-LOW wired-OR logic functions. Its advanced CMOS process enables high-speed operation while maintaining low ICC (≤10µA) and supporting power-down mode with high-impedance I/Os.
All inputs tolerate up to 7V regardless of VCC, enabling safe interfacing between 5V peripherals and 3V microcontrollers. The device meets JEDEC 78 latch-up requirements and exceeds 2000V HBM ESD rating, making it suitable for industrial control and communication interface circuits where voltage domain bridging and noise immunity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3V to 5.5V - supports single-supply operation across 3.3V and 5V systems without level translators |
| tPD Max | 2.9ns at VCC = 3.3V - enables timing-critical signal buffering in high-speed digital interfaces |
| IOL Drive | +24mA at VCC = 3.0V - sufficient to drive standard TTL loads or multiple CMOS inputs in wired-logic configurations |
| Input Tolerance | 5V tolerant (up to 7V) - eliminates need for external clamping diodes when interfacing 5V signals to 3V logic |
| ICC Quiescent | ≤10µA at VCC = 2.3–5.5V - ensures ultra-low static power in battery-powered or always-on subsystems |
| ESD Rating | >2000V HBM - provides robust handling during board assembly and field operation in unshielded environments |
Pinout & Package
74LCX07SJX is packaged in a 14-lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm wide (package code M14D), with gull-wing leads and JEDEC-compliant land pattern SOIC127P600X145-14M.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Inputs (A1–A6) | CMOS-compatible inputs accepting 0–7V; internally pulled to high-impedance in power-down mode |
| 2, 4, 6, 10, 12, 14 | Open-Drain Outputs (Y1–Y6) | Require external pull-up; sink current only; enable wired-logic functions without additional gates |
| 7 | GND | Ground reference for all I/O and internal circuitry; must be connected to system ground plane |
| 14 | VCC | Positive supply rail; decoupling capacitor (0.1µF) required within 10mm of this pin for stable AC operation |
Key Features
| Feature | Design Value |
|---|---|
| 5V-tolerant inputs | Enables direct connection to 5V buses without external resistors or translators in mixed-voltage designs |
| Open-drain outputs | Supports flexible wired-logic implementation (e.g., I²C bus arbitration, interrupt sharing, reset combining) |
| Power-down high-Z I/O | Prevents back-driving and leakage during sleep modes, simplifying power sequencing in multi-rail systems |
| Low dynamic power dissipation | CPD = 25pF at 3.3V/10MHz - reduces switching noise and thermal load in dense PCB layouts |
| Latch-up immunity | Exceeds JEDEC 78 Class II (±100mA) - ensures reliability under transient overvoltage or ESD stress events |
Applications
| Industrial PLC I/O Expansion | I²C Bus Level Translation |
|---|---|
|
Use Scenario: Expanding digital input/output capability on programmable logic controller backplanes using 3.3V FPGAs while retaining legacy 5V sensor/actuator interfaces. IC Role / Device Role / Timing Role: Buffering and voltage-domain isolation for discrete status signals and control lines; open-drain outputs enable shared interrupt lines. Use Value: Eliminates need for discrete MOSFET translators per channel, reducing BOM count and layout area by >40% versus discrete solutions. |
Use Scenario: Interfacing 3.3V microcontroller I²C master with 5V EEPROM or sensor slaves on the same bus segment. IC Role / Device Role / Timing Role: Acting as bidirectional level shifter via open-drain topology; supports standard I²C clock rates up to 400kHz. Use Value: Maintains full I²C protocol compliance without speed penalty or added propagation delay skew between SDA/SCL paths. |
| Embedded System Reset Combining | Legacy Peripheral Interface Bridge |
|
Use Scenario: Aggregating multiple independent reset sources (watchdog, power monitor, manual button) into a single system-wide reset signal. IC Role / Device Role / Timing Role: Wired-OR combiner using open-drain outputs tied to common pull-up; each buffer drives one reset source. Use Value: Ensures glitch-free reset assertion with no race conditions; avoids timing mismatches inherent in OR-gate-based solutions. |
Use Scenario: Connecting modern low-voltage SoCs to legacy parallel peripherals (e.g., LCD controllers, SRAM, FPGA configuration PROMs) operating at 5V. IC Role / Device Role / Timing Role: Unidirectional level translator for address/data/control lines; supports 2.9ns tPD for synchronous bus timing. Use Value: Enables drop-in replacement of obsolete 74-series buffers without redesigning timing margins or adding delay compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex buffer with open-drain applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC07APW | Lower VCC min (1.65V), higher max IOL (+32mA at 4.5V), but only 3.6V input tolerance | Preferred for sub-2.3V operation or higher drive needs; unsuitable for 5V-tolerant interfacing without external protection | Select when system uses 1.8V–3.3V supplies exclusively and requires stronger sink capability |
| 74AHC1G07SE-7 | Single-channel SC-70 package; identical 5V input tolerance and open-drain function but not hex-configured | Used for point-to-point translation where space constraints preclude 14-pin packages | Choose for minimal footprint in low-channel-count applications; requires six devices for full hex functionality |
Compared with SN74LVC07APW and 74AHC1G07SE-7, the 74LCX07SJX uniquely balances 5V input tolerance, hex integration, SOP-14 manufacturability, and sub-3ns timing - making it optimal for cost-sensitive, mixed-voltage industrial control boards requiring consolidated buffering.
Availability
74LCX07SJX is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, I²C bus level translation, embedded system reset combining, and legacy peripheral interface bridge applications requiring stable component supply and long-term lifecycle assurance.
Supply support for 74LCX07SJX 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, sensors, and logic solutions for automotive, industrial, and cloud infrastructure markets.
The 74LCX07SJX belongs to the LCX family of low-voltage, high-speed CMOS logic devices engineered for seamless voltage-domain interoperability in mixed-supply embedded systems.
FAQ
What is the maximum input voltage the 74LCX07SJX can safely accept?
The 74LCX07SJX accepts DC input voltages up to 7.0V regardless of VCC level, enabling direct connection to 5V logic signals even when powered from 2.3V–3.6V supplies. This 5V-tolerant feature is guaranteed per datasheet Absolute Maximum Ratings and eliminates external clamping components in mixed-voltage designs.
Does the 74LCX07SJX support true three-state (high-impedance) outputs?
No - the 74LCX07SJX features open-drain outputs only, not three-state. Each output can only sink current or float; it cannot actively drive HIGH. External pull-up resistors are required to establish HIGH logic levels, and wired-logic functions (e.g., wired-AND) rely on this passive pull-up behavior.
Can unused inputs on the 74LCX07SJX be left floating?
No - per datasheet Recommendation (Note 3), all unused inputs must be held HIGH or LOW using pull-up/pull-down resistors. Floating inputs may cause excessive ICC, erratic output behavior, or increased EMI due to metastability in CMOS input stages.
What is the recommended decoupling for the 74LCX07SJX?
A 0.1µF ceramic capacitor placed within 10mm of the VCC pin (Pin 14) and GND (Pin 7) is required for stable high-speed operation. For systems with heavy switching loads, add a 4.7µF bulk capacitor nearby to suppress low-frequency supply droop.
Is the 74LCX07SJX pin-compatible with other 74-series hex buffers like the 74LS07?
No - although functionally similar, the 74LCX07SJX uses a different pinout than bipolar 74LS07 (which has different output structure and no 5V-tolerant inputs). Direct substitution would require PCB redesign; verify against the official 74LCX07SJX pin diagram before replacement.
74LCX07SJX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74LCX
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- 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-SOP
74LCX07SJX FAQ
1.How can I place an order for 74LCX07SJX through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LCX07SJX 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 74LCX07SJX reliable?
The price and inventory of 74LCX07SJX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LCX07SJX is usually 5 days.
3.What payment methods are accepted for 74LCX07SJX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LCX07SJX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LCX07SJX?
74LCX07SJX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LCX07SJX 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 74LCX07SJX?
For technical support, including 74LCX07SJX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LCX07SJX requirements.
6.How does Aetrix verify that 74LCX07SJX is sourced from the original manufacturer or authorized distributors?
All 74LCX07SJX 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 74LCX07SJX meets industry standards.
7.What is the process for return or replacement of 74LCX07SJX?
All 74LCX07SJX units undergo pre-shipment inspection (PSI). If there is an issue with 74LCX07SJX, 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 74LCX07SJX part is unused and in its original packaging.
Return procedure for 74LCX07SJX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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