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onsemi MC74LCX08SDR2
- Part No.:
- MC74LCX08SDR2
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
MC74LCX08SDR2.pdf
- Description:
- IC GATE AND
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Product details
Overview
MC74LCX08SDR2 from ON Semiconductor (formerly Motorola) is a low-voltage CMOS quad 2-input AND gate operating from 2.7V to 3.6V supply, with 5V-tolerant inputs, 24mA balanced output drive, near-zero static supply current (10µA), and TSSOP-14 package. It enables logic-level translation between 3.3V systems and legacy 5V TTL interfaces in portable computing and industrial control I/O expansion.
For engineers reviewing the MC74LCX08SDR2 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, true pin mapping, real-world use cases, and validated alternative parts - all grounded in Motorola's BR1339 REV 3 technical data and ON Semiconductor's official LCX family documentation.
Technical Context
The MC74LCX08SDR2 implements four independent AND gates in a single monolithic CMOS die, with input structures rated for 5.5V absolute maximum input voltage and output stages capable of ±24mA drive at VCC ≥ 3.0V. Its VIH/VIL thresholds (2.0V/0.8V) and VOL/VOH values (0.55V/2.2V @ 24mA) are specified across –40°C to +85°C and support LVTTL/LVCMOS interoperability.
Propagation delays are guaranteed ≤5.5ns (tPLH/tPHL) at VCC = 3.0–3.6V with CL = 50pF, and output skew is limited to 1.0ns. The device features latchup immunity >500mA and ESD robustness >2000V HBM, meeting industrial reliability requirements without external protection circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7V to 3.6V - Enables direct integration into 3.3V power domains without level shifters. |
| Input Voltage Max | 5.5V - Allows safe interfacing with 5V TTL outputs without clamping diodes or resistors. |
| Output Drive | ±24mA - Sufficient to drive multiple LVTTL loads or small capacitive buses (e.g., address latches). |
| Quiescent ICC | 10µA - Reduces standby power in battery-powered systems such as handheld test equipment. |
| Propagation Delay | ≤5.5ns - Supports >100MHz toggle rates in combinatorial logic paths (e.g., enable gating in FPGA peripherals). |
| Operating Temp | –40°C to +85°C - Qualified for industrial temperature range operation in motor drives and PLC modules. |
| ESD Rating | Human Body Model >2000V - Eliminates need for external ESD protection on board-level I/O lines. |
Pinout & Package
MC74LCX08SDR2 is housed in a 14-lead Plastic SSOP (Shrink Small Outline Package), case 940A–03, with 0.65mm lead pitch and JEDEC-standard footprint. Pin 1 is marked by a beveled corner or dot; leads are gull-wing shaped and surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | A0 | First input of Gate 0 - Accepts 5V-tolerant logic signal; high-impedance reduces loading on upstream drivers. |
| 2 | B0 | Second input of Gate 0 - Paired with A0 to form first AND function; identical electrical characteristics to A0. |
| 3 | O0 | Output of Gate 0 - Delivers rail-to-rail CMOS-compatible logic level with 24mA sink/source capability. |
| 4 | A1 | First input of Gate 1 - Electrically isolated from other inputs; supports independent logic path routing. |
| 5 | B1 | Second input of Gate 1 - Used with A1 for second AND operation; no internal coupling to other gates. |
| 6 | O1 | Output of Gate 1 - Matches O0 timing and drive strength; skew ≤1.0ns ensures synchronous multi-gate operation. |
| 7 | GND | Ground reference - Single ground pin serves all four gates; layout requires low-inductance connection to plane. |
| 8 | O2 | Output of Gate 2 - Positioned adjacent to GND for minimized loop area in high-speed switching paths. |
| 9 | B3 | Second input of Gate 3 - Final input terminal; shares same VIH/VIL and leakage specs (±5µA) as all inputs. |
| 10 | A3 | First input of Gate 3 - Located near VCC for balanced trace length in dense PCB layouts. |
| 11 | O2 | Output of Gate 2 - Corrected: Pin 11 is O2 per logic diagram and pinout table (not duplicate O2); provides third AND result. |
| 12 | B2 | Second input of Gate 2 - Paired with A2 (Pin 13) to generate O2 (Pin 11); matches propagation delay spec. |
| 13 | A2 | First input of Gate 2 - Input pair A2/B2 drives O2; identical AC/DC specs to A0/B0. |
| 14 | VCC | Supply voltage - Single 2.7–3.6V rail powers all gates; decoupling capacitor (0.1µF) required within 5mm. |
Key Features
| Feature | Design Value |
|---|---|
| 5V-tolerant inputs | Enables seamless interface with 5V TTL without external level-shifting components or voltage dividers. |
| 24mA balanced output drive | Drives up to 10 LVTTL loads or 15pF bus capacitance while maintaining VOL ≤0.55V at full sink current. |
| 10µA quiescent current | Reduces system-level standby power by >95% compared to standard LS-TTL equivalents in always-on monitoring circuits. |
| Industrial temperature range | Operates reliably from –40°C to +85°C without derating, supporting deployment in uncontrolled ambient environments. |
| High ESD immunity | HBM >2000V eliminates need for discrete TVS diodes on board-level control lines, simplifying BOM and layout. |
Applications
| Industrial I/O Expansion | Portable Instrumentation Logic |
|---|---|
|
Use Scenario: Adding discrete enable gating to 3.3V microcontroller GPIOs controlling 5V relay driver arrays. IC Role / Device Role / Timing Role: Quad AND gate performing voltage-level–agnostic signal conditioning and safety interlock logic. Use Value: Eliminates need for dual-supply translators; 5V-tolerant inputs accept MCU reset or watchdog signals directly. |
Use Scenario: Implementing pushbutton debouncing and mode selection logic in handheld multimeters. IC Role / Device Role / Timing Role: Combinatorial logic element generating synchronized enable pulses for ADC sampling windows. Use Value: 5.5ns max propagation delay ensures sub-microsecond response to user input, improving UI responsiveness. |
| Automated Test Equipment (ATE) | Programmable Logic Interface |
|
Use Scenario: Gating digital stimulus signals from FPGA-based pattern generators before driving DUT pins. IC Role / Device Role / Timing Role: Signal integrity-preserving logic buffer with matched tPLH/tPHL and <1ns skew across outputs. Use Value: Ensures deterministic timing alignment across parallel test channels, critical for parametric measurement accuracy. |
Use Scenario: Interfacing CPLD configuration status signals to 3.3V host processors in modular embedded controllers. IC Role / Device Role / Timing Role: Level-translating AND gate verifying both CONFIG_DONE and INIT_B assertions before boot. Use Value: 10µA ICC allows continuous monitoring without impacting battery life in field-deployable edge nodes. |
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 | Same 2.7–3.6V VCC range and 5V-tolerant inputs; slightly higher VOL (0.55V vs 0.4V @ 24mA) and slower max tPD (7.5ns). | Valid for cost-sensitive industrial designs where 2ns timing margin is acceptable; pinout identical but SSOP-14 footprint differs. | Select when sourcing flexibility is prioritized and minor timing degradation is tolerable in non-critical paths. |
| 74AHC08PW | Wider VCC range (2–5.5V); lower drive (±8mA); faster tPD (4.5ns typical) but no 5V-tolerant inputs - requires external clamping for 5V signals. | Suitable for pure 3.3V systems needing higher speed; unsuitable for mixed-voltage interfacing without added components. | Choose only in 3.3V-only designs where propagation delay is critical and 5V signal compatibility is unnecessary. |
Compared with SN74LVC08APW and 74AHC08PW, the MC74LCX08SDR2 uniquely combines 5V-tolerant inputs, 24mA drive, and industrial temp rating in a single SSOP-14 package - making it optimal for legacy interface bridging where reliability and voltage interoperability are non-negotiable.
Availability
MC74LCX08SDR2 is available at Aetrix Electronics and suitable for industrial I/O expansion, portable instrumentation logic, automated test equipment, and programmable logic interface applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance.
Supply support for MC74LCX08SDR2 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 (formerly Motorola Semiconductor) is a global leader in high-performance silicon solutions for automotive, industrial, cloud, and IoT applications, with deep heritage in logic and analog IC design.
The MC74LCX08SDR2 belongs to the LCX low-voltage CMOS logic family, engineered specifically for mixed-voltage system interfacing and low-power portable electronics where 5V legacy compatibility meets modern 3.3V efficiency targets.
FAQ
What is the maximum input voltage rating for MC74LCX08SDR2?
The MC74LCX08SDR2 supports an absolute maximum input voltage (VI) of 5.5V, enabling direct connection to 5V TTL outputs without external protection. This specification is explicitly defined in the Absolute Maximum Ratings table of Motorola BR1339 REV 3, and applies across the full operating temperature range (–40°C to +85°C). Exceeding 5.5V risks permanent damage.
Does MC74LCX08SDR2 support 2.5V supply operation?
No, MC74LCX08SDR2 is not characterized or guaranteed for 2.5V operation. Its Recommended Operating Conditions specify a minimum VCC of 2.7V, and DC Electrical Characteristics (e.g., VIH = 2.0V, VOL ≤ 0.55V) are only validated from 2.7V to 3.6V. Operation below 2.7V may result in undefined logic thresholds or excessive propagation delay.
What is the output drive capability of MC74LCX08SDR2 at 3.3V supply?
At VCC = 3.3V, the MC74LCX08SDR2 delivers ±24mA output current - confirmed in the Recommended Operating Conditions table under IOH/IOL limits. VOH remains ≥2.2V and VOL stays ≤0.55V under these conditions, ensuring robust noise margins when driving LVTTL or LVCMOS loads in real-world PCB environments.
Is MC74LCX08SDR2 pin-compatible with standard 74LS08 or 74HC08 packages?
No, MC74LCX08SDR2 uses a 14-lead SSOP (case 940A–03) with 0.65mm pitch, whereas 74LS08 and 74HC08 typically use 14-lead SOIC (1.27mm pitch). Physical pinout order matches standard quad AND gate logic diagrams (A0/B0/O0…VCC/GND), but the SSOP footprint is not mechanically or solder-reflow compatible with SOIC or PDIP packages.
What is the quiescent supply current of MC74LCX08SDR2 under typical operating conditions?
The MC74LCX08SDR2 draws only 10µA of quiescent supply current (ICC) when all inputs are held at GND or VCC, as measured per DC Electrical Characteristics at TA = –40°C to +85°C and VCC = 2.7–3.6V. This ultra-low ICC value is a defining feature of the LCX family and is critical for battery-powered applications where standby power must be minimized.
MC74LCX08SDR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Circuits:
- -
- Number of Inputs:
- -
- Features:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Max):
- -
- Current - Output High, Low:
- -
- Input Logic Level - Low:
- -
- Input Logic Level - High:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MC74LCX08SDR2 FAQ
1.How can I place an order for MC74LCX08SDR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74LCX08SDR2 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 MC74LCX08SDR2 reliable?
The price and inventory of MC74LCX08SDR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74LCX08SDR2 is usually 5 days.
3.What payment methods are accepted for MC74LCX08SDR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74LCX08SDR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74LCX08SDR2?
MC74LCX08SDR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74LCX08SDR2 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 MC74LCX08SDR2?
For technical support, including MC74LCX08SDR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74LCX08SDR2 requirements.
6.How does Aetrix verify that MC74LCX08SDR2 is sourced from the original manufacturer or authorized distributors?
All MC74LCX08SDR2 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 MC74LCX08SDR2 meets industry standards.
7.What is the process for return or replacement of MC74LCX08SDR2?
All MC74LCX08SDR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC74LCX08SDR2, 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 MC74LCX08SDR2 part is unused and in its original packaging.
Return procedure for MC74LCX08SDR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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