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onsemi 74LCX08SJX
- Part No.:
- 74LCX08SJX
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
74LCX08SJX.pdf
- Description:
- IC GATE AND 4CH 2-INP 14SOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,305
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Product details
Overview
74LCX08SJX from ON Semiconductor is a low-voltage quad 2-input AND gate with 5V-tolerant inputs, designed for level-shifting between 3.3V and 5V logic domains. It operates from 2.3V to 3.6V VCC, delivers ≤5.5ns propagation delay at 3.3V, supports ±24mA output drive, and features power-down high-impedance I/O for bus-hold applications in mixed-voltage digital systems.
For engineers reviewing the 74LCX08SJX datasheet, pinout, applications, or equivalent options, key selection criteria include 5V input tolerance, sub-6ns timing at 3.3V, SOIC-14 package compatibility, and guaranteed operation across –40°C to +85°C industrial temperature range.
Technical Context
The 74LCX08SJX implements four independent AND gates using advanced CMOS process technology optimized for low-voltage, high-speed operation. Its input structure tolerates up to 7V DC, enabling direct interfacing of 5V peripherals to 3.3V microcontrollers without external level shifters.
All inputs and outputs enter high-impedance state during power-down, and the device meets JEDEC 78 latch-up immunity requirements with ESD protection exceeding 2000V (HBM). Propagation delay skew between outputs is limited to 1.0ns, ensuring tight timing alignment across all four gates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3V–3.6V - Enables stable operation in 3.3V systems with margin for supply variation |
| tPD Max | 5.5ns at VCC = 3.3V - Supports >100MHz toggle rates in synchronous logic paths |
| IOH/IOL | ±24mA at VCC = 3.0V - Drives multiple LS-TTL loads or short PCB traces without buffering |
| VI Max | 7.0V - Allows safe connection to 5V buses while powered from 3.3V supply |
| ICC Max | 10µA - Minimizes quiescent power in battery-backed or always-on control logic |
| Operating Temp | –40°C to +85°C - Qualified for industrial-grade embedded controllers and communications equipment |
Pinout & Package
74LCX08SJX is housed in a 14-lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm wide - compatible with standard SOIC-14 footprints and reflow assembly processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 12, 13 | Input (A1/B1/A2/B2/A3/B3/A4/B4) | 5V-tolerant logic inputs accepting 0–7V; must be tied HIGH/LOW when unused |
| 3, 6, 10, 13 | Output (Y1/Y2/Y3/Y4) | CMOS-compatible outputs with ±24mA drive; enter Hi-Z during power-down |
| 7 | GND | Ground reference for all logic and power domains |
| 14 | VCC | Primary supply rail (2.3–3.6V); powers internal logic and output stages |
Key Features
| Feature | Design Value |
|---|---|
| 5V-tolerant inputs | Enables direct interface between 5V legacy peripherals and 3.3V SoCs without external translators |
| Power-down Hi-Z I/O | Prevents bus contention and back-driving during sleep or reset states in multi-device systems |
| Low propagation skew | ≤1.0ns max output-to-output skew ensures synchronized gating across all four channels |
| High ESD immunity | HBM >2000V allows robust handling in manual assembly and field-replaceable modules |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Adding discrete logic gating to isolate sensor inputs before ADC sampling in programmable logic controllers. IC Role / Device Role / Timing Role: Quad AND gate performing signal enable/control for analog multiplexer selection and fault masking. Use Value: 5V-tolerant inputs accept direct connection to 5V sensors; low tPD ensures real-time response within 6ns cycle budget. | Use Scenario: Enabling/disabling power to LED driver ICs based on CAN message status in vehicle lighting subsystems. IC Role / Device Role / Timing Role: Logic-level translator and gating element between 3.3V microcontroller GPIO and 5V LED driver enable lines. Use Value: Eliminates need for discrete MOSFET level shifters; ±24mA drive directly sinks LED driver enable current. |
| Medical Patient Monitor Interface | Networking Equipment Backplane Logic |
Use Scenario: Isolating alarm trigger signals from multiple physiological sensors before feeding to interrupt controller. IC Role / Device Role / Timing Role: Synchronous AND gate combining sensor validity and threshold flags to generate clean interrupt pulses. Use Value: Power-down Hi-Z prevents false triggers during MCU sleep; –40°C to +85°C rating supports clinical environment reliability. | Use Scenario: Controlling hot-swap controller enable signals in modular switch chassis with mixed 3.3V/5V voltage rails. IC Role / Device Role / Timing Role: Voltage-level agnostic gating for board presence detection and power sequencing logic. Use Value: 7V absolute input rating withstands transient overshoot on backplane buses; SOIC-14 footprint simplifies layout reuse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input AND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC08APW,118 | Lower VCC min (1.65V), higher speed (tPD ≤ 3.7ns @ 3.3V), but only 5.5V input tolerant | Better suited for ultra-low-voltage portable designs; insufficient for 7V input transients | Select when system operates down to 1.65V and requires faster propagation, but verify input voltage limits match host bus. |
| SN74AHC08DR | Wider VCC range (2V–5.5V), 5.5V input tolerant, but no power-down Hi-Z mode | Compatible with both 3.3V and 5V native systems; lacks bus-isolation capability during standby | Choose for single-rail 5V designs or where power-down isolation is not required; avoid in multi-voltage hot-swap systems. |
Compared with 74LCX08SJX, the 74LVC08APW offers faster timing at lower supply voltages but reduced input overvoltage margin, while SN74AHC08DR supports broader VCC flexibility without power-down isolation-making 74LCX08SJX optimal for robust 3.3V/5V bridging with bus-hold safety.
Availability
74LCX08SJX is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and medical patient monitor interfaces requiring stable component supply across extended temperature ranges and mixed-voltage signal conditioning.
Supply support for 74LCX08SJX 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 electronics for automotive, industrial, cloud computing, and medical applications.
The 74LCX08SJX belongs to the LCX family of low-voltage, 5V-tolerant logic devices engineered specifically for seamless voltage-domain bridging in mixed-supply digital systems.
FAQ
What is the maximum input voltage the 74LCX08SJX can tolerate?
The 74LCX08SJX supports DC input voltages up to 7.0V, enabling reliable interfacing with 5V logic families while operating from a 3.3V supply. This 5V-tolerant feature is inherent to its input structure and does not require external clamping diodes or resistors. The 74LCX08SJX maintains full functionality and specified timing across this input range when VCC is within 2.3V–3.6V.
Does the 74LCX08SJX support power-down mode with high-impedance I/O?
Yes, the 74LCX08SJX enters a power-down state where both inputs and outputs transition to high-impedance, preventing bus contention during system sleep or reset. This behavior is automatic and does not require control pins. When VCC drops below operational thresholds or is removed, the 74LCX08SJX maintains Hi-Z I/O, making it suitable for hot-swap and low-power standby applications.
What is the typical propagation delay of the 74LCX08SJX at 3.3V supply?
The 74LCX08SJX exhibits a maximum propagation delay of 5.5ns under worst-case conditions (VCC = 3.3V ± 0.3V, CL = 50pF, TA = –40°C to +85°C). Typical performance is faster, and the 74LCX08SJX consistently achieves sub-6ns timing across its full operating range, supporting high-speed control logic in real-time embedded systems.
Is the 74LCX08SJX pin-compatible with standard SOIC-14 footprints?
Yes, the 74LCX08SJX uses an EIAJ TYPE II SOP package (M14D) with 14 leads and 5.3mm body width, matching industry-standard SOIC-14 land patterns. Its pinout follows conventional 74-series logic layout: VCC on pin 14, GND on pin 7, and symmetrical input/output pairing across the package-ensuring drop-in replacement capability in existing designs using 74-series AND gates.
What are the ESD protection ratings for the 74LCX08SJX?
The 74LCX08SJX provides Human Body Model (HBM) ESD protection exceeding 2000V and Machine Model (MM) protection greater than 150V, per JEDEC standards. These ratings are verified during qualification testing and reflect robustness against handling-induced discharges. The 74LCX08SJX's ESD performance supports reliable deployment in manual assembly environments and field-serviceable electronic modules.
74LCX08SJX 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:
- AND Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 2V ~ 3.6V
- Current - Quiescent (Max):
- 10 µA
- Current - Output High, Low:
- 24mA, 24mA
- Input Logic Level - Low:
- 0.7V ~ 0.8V
- Input Logic Level - High:
- 1.7V ~ 2V
- Max Propagation Delay @ V, Max CL:
- 5.5ns @ 3.3V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOP
74LCX08SJX FAQ
1.How can I place an order for 74LCX08SJX through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LCX08SJX 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 74LCX08SJX reliable?
The price and inventory of 74LCX08SJX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LCX08SJX is usually 5 days.
3.What payment methods are accepted for 74LCX08SJX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LCX08SJX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LCX08SJX?
74LCX08SJX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LCX08SJX 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 74LCX08SJX?
For technical support, including 74LCX08SJX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LCX08SJX requirements.
6.How does Aetrix verify that 74LCX08SJX is sourced from the original manufacturer or authorized distributors?
All 74LCX08SJX 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 74LCX08SJX meets industry standards.
7.What is the process for return or replacement of 74LCX08SJX?
All 74LCX08SJX units undergo pre-shipment inspection (PSI). If there is an issue with 74LCX08SJX, 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 74LCX08SJX part is unused and in its original packaging.
Return procedure for 74LCX08SJX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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