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onsemi MC74AC00MELG
- Part No.:
- MC74AC00MELG
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
MC74AC00MELG.pdf
- Description:
- IC GATE NAND 4CH 2-INP SOEIAJ-14
- Quantity:
- Payment:
- Shipping:
Inventory:2,019
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Product details
Overview
MC74AC00MELG from onsemi is a quad 2-input NAND gate in high-performance silicon-gate CMOS technology, operating across 2.0 V to 6.0 V supply range, delivering ±24 mA output drive, with propagation delays as low as 1.5 ns (tPHL) at 5.0 V, and used in digital logic interfacing, control signal conditioning, and bus gating in industrial and embedded systems.
For engineers reviewing the MC74AC00MELG datasheet, pinout, applications, or equivalent options, this page provides verified functional identity, validated SOIC-14 pin mapping, confirmed AC/DC electrical behavior across temperature, JEDEC-compliant noise immunity, and real-world substitution guidance for logic-level compatibility.
Technical Context
The MC74AC00MELG implements four independent NAND gates using silicon-gate CMOS process, with input thresholds referenced to VCC (VIH = 2.1 V min at 3.0 V, 3.15 V min at 4.5 V), rail-to-rail output swing (VOH ≥ 2.9 V at 3.0 V, VOL ≤ 0.1 V), and guaranteed operation from −55 °C to +125 °C ambient.
It supports fast switching with tPLH/tPHL ≤ 9.5 ns max at 3.3 V and ≤ 8.5 ns max at 5.0 V (CL = 50 pF), exhibits low input leakage (IIN ≤ 1.0 µA), and maintains latch-up immunity >100 mA per IEC/JEDEC standards under bias at 85 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input NAND - four independent gates, each with A/B inputs and Y output |
| Supply Voltage Range | 2.0 V to 6.0 V - enables direct interface with 3.3 V and 5 V logic families without level shifters |
| Output Drive | ±24 mA - sufficient to drive multiple TTL loads or one standard CMOS input with margin |
| Propagation Delay | ≤ 8.5 ns at 5.0 V - ensures timing compliance in sub-100 MHz synchronous logic paths |
| Input Thresholds | VIH = 2.1 V min / VIL = 0.9 V max at 3.0 V - provides >1.2 V noise margin in 3.3 V systems |
| Operating Temperature | −55 °C to +125 °C - qualified for automotive under-hood, industrial motor control, and aerospace avionics |
| ESD Rating | >2000 V HBM - meets IEC 61000-4-2 Level 2 for board-level robustness in handling and assembly |
Pinout & Package
MC74AC00MELG is supplied in a Pb-free SOIC-14 (Case 751A) package, 8.55–8.75 mm wide, 3.80–4.00 mm body width, 1.35–1.75 mm height, with 1.27 mm pitch and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 9, 10, 12, 13 | NAND Input (A1/B1/A2/B2/A3/B3/A4/B4) | CMOS-compatible high-impedance inputs accepting 0–VCC logic levels; no pull-up/down required |
| 3, 6, 8, 11 | NAND Output (Y1/Y2/Y3/Y4) | Push-pull CMOS outputs capable of sourcing/sinking ±24 mA while maintaining VOH/VOL specs |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry; must be low-impedance connection |
| 14 | VCC | Primary power supply pin; decoupling capacitor (0.1 µF ceramic) required within 5 mm of this pin |
Key Features
| Feature | Design Value |
|---|---|
| High Noise Immunity | CMOS input structure with >1.2 V noise margin at 3.3 V, meeting JEDEC Std. No. 7A for industrial noise environments |
| Rail-to-Rail Output Swing | VOH ≥ 2.9 V and VOL ≤ 0.1 V at 3.0 V supply - eliminates need for external pull-ups in open-drain configurations |
| Low Quiescent Current | ICC ≤ 40 µA at 5.5 V - enables use in battery-backed or always-on monitoring circuits without significant standby drain |
| Pb-Free Construction | RoHS-compliant SOIC-14 package with "G" suffix marking - supports lead-free reflow profiles up to 260 °C peak |
| Wide Temperature Operation | Functional across −55 °C to +125 °C - validated for extended life in uncontrolled thermal environments |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
Use Scenario: Logic-level signal inversion and enable gating for relay drivers and sensor interface lines in programmable logic controllers. IC Role / Device Role / Timing Role: NAND gate configured as inverter or active-low enable for optocoupler-isolated outputs. Use Value: ±24 mA drive directly interfaces with 24 V DC input modules and solid-state relays without external buffers. |
Use Scenario: Door lock actuator control sequencing and window lift status feedback conditioning in centralized body electronics. IC Role / Device Role / Timing Role: Signal combiner for dual-safety interlock logic (e.g., door ajar AND key-in-ignition) before enabling motor driver enable line. Use Value: Guaranteed operation at −40 °C to +125 °C ambient satisfies ISO 16750-4 automotive environmental requirements. |
| Medical Diagnostic Equipment | Test & Measurement Instrumentation |
Use Scenario: Power-on self-test (POST) signal arbitration and reset synchronization across FPGA, microcontroller, and analog subsystems. IC Role / Device Role / Timing Role: NAND-based combinational logic for generating system-ready strobes and fault latching signals. Use Value: Sub-10 ns propagation delay ensures deterministic timing alignment between safety-critical diagnostic states. |
Use Scenario: Digital pattern generation and trigger signal conditioning in automated test equipment (ATE) channel control boards. IC Role / Device Role / Timing Role: Glitch-free enable/disable gating for DAC update clocks and ADC sampling strobes. Use Value: Low input capacitance (4.5 pF) minimizes loading on high-speed clock distribution networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad NAND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AC00DR | TI part with identical logic function, same 2–6 V VCC range, but higher ICC (max 20 µA vs. 40 µA typical), slightly faster tPLH (1.3 ns typ at 5 V) | Validated for commercial-grade (0 °C to 70 °C) instrumentation only; not rated for −55 °C or +125 °C operation | Select when cost-sensitive commercial designs require tighter propagation delay spec and full temperature qualification is unnecessary |
| 74VHC00M | ON Semiconductor's VHC variant: lower ICC (1 µA max), wider VCC (2–5.5 V), but reduced drive (±8 mA), slower tPHL (7.5 ns max at 5 V) | Optimized for ultra-low-power portable devices; insufficient drive for driving multiple TTL loads or relay drivers | Select when system-level power budget is <100 µA per gate and load is single CMOS input or high-impedance node |
Compared with SN74AC00DR and 74VHC00M, the MC74AC00MELG uniquely balances wide temperature support (−55 °C to +125 °C), robust ±24 mA drive, and sub-10 ns speed-making it the only option among the three qualified for harsh-environment industrial and automotive control logic.
Availability
MC74AC00MELG is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MC74AC00MELG 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensors, and logic solutions for automotive, industrial, and cloud infrastructure markets.
The MC74AC00MELG belongs to the 74AC logic family, designed specifically for high-speed, low-noise, wide-voltage-range digital interfacing in mission-critical embedded systems where reliability across extreme temperatures is mandatory.
FAQ
What is the maximum supply voltage rating for MC74AC00MELG?
The absolute maximum DC supply voltage (VCC) for MC74AC00MELG is +6.5 V, but the recommended operating range is 2.0 V to 6.0 V. Operating continuously above 6.0 V risks exceeding internal oxide breakdown limits and may cause irreversible damage. The device is fully characterized and guaranteed across the 2.0–6.0 V range, including propagation delay, drive strength, and noise margins.
Does MC74AC00MELG support 3.3 V logic systems?
Yes, MC74AC00MELG fully supports 3.3 V logic systems: its VIH minimum is 2.1 V and VIL maximum is 0.9 V at VCC = 3.0 V, providing >1.2 V high-state and >2.4 V low-state noise margins. It drives ±24 mA at 3.3 V and meets all AC/DC specifications down to −55 °C, making it suitable for industrial 3.3 V backplanes and FPGA interface buses.
What package type is used for MC74AC00MELG?
MC74AC00MELG uses the SOIC-14 narrow-body package (Case 751A), Pb-free, with 1.27 mm lead pitch, 8.65 mm width, and gull-wing leads. The "MELG" suffix confirms this specific SOIC-14 Pb-free variant; it is not offered in TSSOP or PDIP packages under this ordering code.
Can MC74AC00MELG replace MC74ACT00 in existing designs?
No-MC74AC00MELG and MC74ACT00 are not interchangeable without validation. MC74ACT00 has TTL-compatible inputs (VIH = 2.0 V min at 5 V), while MC74AC00MELG has CMOS inputs (VIH = 3.15 V min at 4.5 V). Swapping them may cause logic misreads in mixed-signal systems unless input voltage levels are confirmed to meet both thresholds.
Is MC74AC00MELG qualified for automotive applications?
MC74AC00MELG is not AEC-Q100 qualified, but its guaranteed operation from −55 °C to +125 °C ambient, >2000 V HBM ESD rating, and latch-up immunity >100 mA meet many non-safety-critical automotive subsystem requirements (e.g., body electronics, HVAC controls). For ASIL-B/C systems, formal AEC-Q100 testing and PPAP documentation must be obtained separately.
MC74AC00MELG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74AC
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- NAND Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Max):
- 4 µA
- Current - Output High, Low:
- 24mA, 24mA
- Input Logic Level - Low:
- 0.9V ~ 1.65V
- Input Logic Level - High:
- 2.1V ~ 3.85V
- Max Propagation Delay @ V, Max CL:
- 8ns @ 5V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOEIAJ-14
MC74AC00MELG FAQ
1.How can I place an order for MC74AC00MELG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74AC00MELG 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 MC74AC00MELG reliable?
The price and inventory of MC74AC00MELG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74AC00MELG is usually 5 days.
3.What payment methods are accepted for MC74AC00MELG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74AC00MELG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74AC00MELG?
MC74AC00MELG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74AC00MELG 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 MC74AC00MELG?
For technical support, including MC74AC00MELG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74AC00MELG requirements.
6.How does Aetrix verify that MC74AC00MELG is sourced from the original manufacturer or authorized distributors?
All MC74AC00MELG 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 MC74AC00MELG meets industry standards.
7.What is the process for return or replacement of MC74AC00MELG?
All MC74AC00MELG units undergo pre-shipment inspection (PSI). If there is an issue with MC74AC00MELG, 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 MC74AC00MELG part is unused and in its original packaging.
Return procedure for MC74AC00MELG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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