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onsemi 74LVQ08SJX
- Part No.:
- 74LVQ08SJX
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
74LVQ08SJX.pdf
- Description:
- IC GATE AND 4CH 2-INP 14SOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,038
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Product details
Overview
74LVQ08SJX from Fairchild Semiconductor is a low-voltage quad 2-input AND gate IC operating at 2.0–3.6 V supply, with guaranteed 9.5 ns max propagation delay (tPLH/tPHL @ VCC = 3.3 V, CL = 50 pF), 1.5 ns max output-to-output skew, and ±12 mA drive capability-used in 3.3 V logic interfacing, bus gating, and control signal conditioning.
For engineers reviewing the 74LVQ08SJX datasheet, pinout, applications, or equivalent options, key selection factors include its guaranteed incident-wave switching into 75 Ω transmission lines, simultaneous switching noise immunity, dynamic input threshold compliance (VILD = 0.8 V, VIHD = 2.0 V @ VCC = 3.3 V), and EIAJ TYPE II SOP-14 package compatibility.
Technical Context
The 74LVQ08SJX implements four independent 2-input AND gates in a single monolithic CMOS device, designed for 3.3 V system-level logic interfacing where low dynamic noise and tight timing skew are critical. It supports incident-wave switching on controlled-impedance lines down to 75 Ω and guarantees simultaneous switching performance across all outputs.
Its AC characteristics are specified over −40°C to +85°C with VCC = 2.7 V and 3.3 ± 0.3 V, and DC thresholds meet TTL-compatible levels (VIH = 2.0 V min, VIL = 0.8 V max) while maintaining CMOS power efficiency. Input leakage remains ≤ ±1.0 µA across full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0 V to 3.6 V - Enables direct interface with 3.3 V LVTTL and LVCMOS systems without level translation. |
| tPLH / tPHL Max | 9.5 ns @ VCC = 3.3 V, CL = 50 pF - Supports >100 MHz toggle rates in gated clock or enable paths. |
| Output Skew (tOSLH/tOSHL) | 1.5 ns max - Ensures synchronized assertion of multiple control signals in state machines or bus arbitration logic. |
| IOL / IOH | ±12 mA - Drives standard 50 Ω transmission lines or loads up to 10 LVTTL inputs. |
| VIL / VIH | 0.8 V / 2.0 V min - Compatible with legacy TTL outputs and ensures robust noise margin in mixed-voltage boards. |
| ICC Quiescent | 20 µA max @ VCC = 3.6 V - Enables use in battery-backed or low-power standby circuitry. |
| Dynamic Thresholds | VILD = 0.8 V, VIHD = 2.0 V @ VCC = 3.3 V - Guarantees correct sampling of fast-rising/falling edges under real-world slew conditions. |
Pinout & Package
74LVQ08SJX is housed in a 14-lead Small Outline Package (SOP), EIAJ TYPE II, 5.3 mm wide (Package Code M14D), with gull-wing leads and standard 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | Input (A1/B1, A2/B2, A3/B3, A4/B4) | Four independent 2-input AND gate inputs; each pair shares one gate; unused inputs must be tied HIGH or LOW. |
| 3, 6, 10, 13 | Output (Y1–Y4) | Active-HIGH AND gate outputs; capable of sourcing/sinking ±12 mA with rail-to-rail swing. |
| 7 | GND | Ground reference for all logic and I/O; requires low-inductance connection to minimize switching noise. |
| 14 | VCC | Positive supply (2.0–3.6 V); decoupling capacitor (0.1 µF ceramic) required adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed incident-wave switching into 75 Ω | Enables reliable high-speed signal routing on PCB traces without termination resistors in point-to-point configurations. |
| Simultaneous switching noise immunity | Ensures stable logic thresholds even when all four gates switch concurrently-critical for clock-enable distribution. |
| Pin-to-pin skew < 1.5 ns | Supports time-critical parallel control paths such as memory address gating or multi-channel enable sequencing. |
| TTL-compatible input thresholds | Accepts standard 3.3 V LVTTL outputs directly, eliminating need for external level-shifting components. |
| Low ICC quiescent current | Reduces static power in always-on subsystems like watchdog logic or power-on reset generators. |
Applications
| Industrial PLC I/O Conditioning | Embedded Microcontroller Bus Gating |
|---|---|
Use Scenario: Isolating and enabling discrete sensor inputs before feeding into a microcontroller's GPIO port in noisy factory environments. IC Role / Device Role: Quad AND gate performing hardware-based signal validation and synchronous enable masking. Use Value: Prevents spurious interrupts by requiring both sensor status and system-ready signal to be asserted simultaneously-leveraging guaranteed 1.5 ns skew for deterministic timing. | Use Scenario: Controlling access to shared peripheral buses (e.g., SPI or UART) among multiple MCU peripherals using hardware-enables. IC Role / Device Role: Logic-level bus arbiter that gates clock/data lines only when master select and bus-ready signals align. Use Value: Eliminates contention and bus glitches via sub-10 ns propagation and rail-to-rail 3.3 V output swing compatible with MCU I/O voltage domains. |
| Telecom Line Card Control Logic | Automotive Body Control Module (BCM) Signal Combining |
Use Scenario: Generating synchronized enable pulses for redundant transceiver pairs in telecom line cards with strict timing alignment requirements. IC Role / Device Role: Timing-coherent AND gate array generating concurrent enable strobes for dual-path communication ICs. Use Value: Meets <2 ns inter-output skew requirement for failover switching, verified across −40°C to +85°C operating range. | Use Scenario: Combining door-lock request, ignition status, and security module handshake signals before activating window lift motor drivers. IC Role / Device Role: Safety-critical combinatorial logic block enforcing multi-condition activation policy in 12 V automotive systems with 3.3 V domain controllers. Use Value: Delivers certified 0.8 V/2.0 V dynamic input thresholds and ±12 mA drive-validated for ISO 11898-2 compatible CAN node support logic. |
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 |
|---|---|---|---|
| SN74LVC08APW | Higher drive (±24 mA), wider VCC range (1.65–5.5 V), but no guaranteed 75 Ω incident-wave switching or skew spec. | Better for mixed-voltage boards; less suitable for timing-critical transmission-line routing. | Choose when higher fanout or 5 V tolerance is needed, not when sub-2 ns skew or 75 Ω line driving is mandatory. |
| 74AHC08PW | Faster propagation (4.5 ns typ), but operates at 2–5.5 V and lacks dynamic threshold guarantees below 4.5 V. | Preferred for high-speed digital logic in 5 V systems; not qualified for 3.3 V-only noise-sensitive designs. | Choose for speed-critical 5 V applications; avoid where 3.3 V dynamic VIH/VIL compliance and simultaneous switching noise immunity are required. |
Compared with SN74LVC08APW and 74AHC08PW, the 74LVQ08SJX uniquely delivers verified 75 Ω transmission-line switching, 1.5 ns skew, and dynamic input thresholds optimized for 3.3 V industrial control-making it irreplaceable where timing integrity and noise resilience supersede raw speed or voltage flexibility.
Availability
74LVQ08SJX is available at Aetrix Electronics and suitable for industrial PLC I/O conditioning, embedded microcontroller bus gating, and telecom line card control logic requiring stable component supply, long-term lifecycle support, and guaranteed AC/DC parametric consistency.
Supply support for 74LVQ08SJX 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
Fairchild Semiconductor was a U.S.-based analog and discrete semiconductor manufacturer, acquired by ON Semiconductor in 2016; its legacy logic portfolio remains widely deployed in industrial and telecom infrastructure.
The 74LVQ08SJX belongs to the LVQ low-voltage logic family, engineered specifically for noise-immune 3.3 V system interfacing with emphasis on transmission-line compatibility, simultaneous switching integrity, and temperature-stable timing behavior.
FAQ
What is the maximum propagation delay for 74LVQ08SJX at 3.3 V supply?
The 74LVQ08SJX has a guaranteed maximum propagation delay of 9.5 ns for both tPLH and tPHL when VCC = 3.3 ± 0.3 V, CL = 50 pF, and TA = −40°C to +85°C. This value is measured under worst-case process/voltage/temperature conditions and reflects the device's suitability for sub-100 MHz digital control paths. The 74LVQ08SJX datasheet specifies this limit explicitly in its AC Electrical Characteristics table.
Does 74LVQ08SJX support operation at 2.5 V supply?
Yes, the 74LVQ08SJX is fully specified for operation at 2.5 V within its recommended VCC range of 2.0 V to 3.6 V. At 2.5 V, DC parameters including VIH (min 1.7 V), VIL (max 0.7 V), and VOH/VOL remain valid, and AC performance degrades predictably-tPLH/tPHL increases to 14.0 ns max per datasheet. The 74LVQ08SJX maintains functional correctness and noise immunity across this entire range.
Is 74LVQ08SJX pin-compatible with standard 74LS08 or 74HC08 packages?
No, the 74LVQ08SJX uses an EIAJ TYPE II SOP-14 package (M14D), which differs mechanically and electrically from DIP-14 (74LS08) or SOIC-14 (74HC08). While logical function and pin numbering match the industry-standard 14-pin AND gate layout (e.g., pins 1–2–3 for first gate), the 74LVQ08SJX requires PCB footprint revision for EIAJ 5.3 mm width and gull-wing lead form-not drop-in replaceable without layout change.
What is the purpose of the guaranteed incident-wave switching specification for 74LVQ08SJX?
The guaranteed incident-wave switching into 75 Ω transmission lines ensures the 74LVQ08SJX can drive unterminated PCB traces or coaxial cables without reflection-induced glitches-critical in high-speed control signaling. This specification confirms the device's output stage is characterized for controlled-impedance environments, validated down to 75 Ω load at VCC = 3.3 V and TA = −40°C to +85°C. It is a distinguishing feature of the 74LVQ08SJX not found in generic LVC or HC families.
Can unused inputs on 74LVQ08SJX be left floating?
No, unused inputs on the 74LVQ08SJX must never be left floating. Per the datasheet's Recommended Operating Conditions (Note 2), all unused inputs must be actively tied HIGH (to VCC) or LOW (to GND) to prevent undefined logic states, increased ICC, and potential oscillation. Floating inputs may cause excessive power consumption, noise coupling, or erratic output behavior-especially under temperature variation. This requirement applies universally across all four gates in the 74LVQ08SJX.
74LVQ08SJX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74LVQ
- 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):
- 2 µA
- Current - Output High, Low:
- 12mA, 12mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 9.5ns @ 3.3V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOP
74LVQ08SJX FAQ
1.How can I place an order for 74LVQ08SJX through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVQ08SJX 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 74LVQ08SJX reliable?
The price and inventory of 74LVQ08SJX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVQ08SJX is usually 5 days.
3.What payment methods are accepted for 74LVQ08SJX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVQ08SJX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVQ08SJX?
74LVQ08SJX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVQ08SJX 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 74LVQ08SJX?
For technical support, including 74LVQ08SJX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVQ08SJX requirements.
6.How does Aetrix verify that 74LVQ08SJX is sourced from the original manufacturer or authorized distributors?
All 74LVQ08SJX 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 74LVQ08SJX meets industry standards.
7.What is the process for return or replacement of 74LVQ08SJX?
All 74LVQ08SJX units undergo pre-shipment inspection (PSI). If there is an issue with 74LVQ08SJX, 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 74LVQ08SJX part is unused and in its original packaging.
Return procedure for 74LVQ08SJX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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