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onsemi MC74HCU04AFR2
- Part No.:
- MC74HCU04AFR2
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
MC74HCU04AFR2.pdf
- Description:
- IC GATE XNOR 4CH 2-INP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
MC74HCU04AFR2 from onsemi is a hex unbuffered inverter IC in SOIC-14 NB package, operating from 2.0 V to 6.0 V, delivering 10 LSTTL load drive capability, <1 µA input current, and propagation delay as low as 12 ns at 6.0 V - used for oscillator circuits, pulse shaping, and high-impedance digital signal inversion in industrial control and sensor interface systems.
For engineers reviewing the MC74HCU04AFR2 datasheet, pinout, applications, or equivalent options, key selection criteria include supply voltage range (2.0–6.0 V), output drive strength (±25 mA per pin), AC timing performance (tPLH/tPHL ≤ 18 ns @ 4.5 V), thermal operation up to +125°C, and Pb-free SOIC-14 compliance with JEDEC Std. 7.0A.
Technical Context
The MC74HCU04AFR2 implements six independent single-stage CMOS inverters using high-performance silicon-gate technology. Each inverter features symmetrical push-pull output stages, rail-to-rail output swing, and high noise immunity due to CMOS input thresholds (VIH ≥ 1.7 V @ VCC = 2.0 V; VIL ≤ 0.3 V).
It supports oscillator configurations across 2.5–6.0 V, with guaranteed AC performance at CL = 50 pF and input rise/fall times unrestricted. Input protection circuitry guards against static discharge, and unused inputs must be tied to VCC or GND to prevent floating node instability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - enables interoperability with 3.3 V and 5 V logic families without level shifters. |
| Max Propagation Delay | 12 ns @ VCC = 6.0 V - ensures timing-critical signal inversion in high-speed clock buffers and feedback loops. |
| Output Drive | ±25 mA per pin - sufficient to directly drive LEDs, small capacitive loads, or multiple LSTTL inputs. |
| Input Leakage Current | ±1.0 µA max @ 125°C - preserves signal integrity in battery-powered or high-impedance sensing nodes. |
| Operating Temperature | –55°C to +125°C - qualified for under-hood automotive, industrial PLC, and outdoor equipment environments. |
| Input Capacitance | 10 pF max - minimizes loading on preceding stage and supports clean edge transitions in RC oscillator designs. |
| Quiescent Supply Current | 40 µA max @ 125°C - enables ultra-low-power standby operation in always-on monitoring circuits. |
Pinout & Package
MC74HCU04AFR2 is housed in a Pb-free SOIC-14 NB (Case 751A) package, 8.55 mm × 3.80 mm × 1.75 mm body, with 1.27 mm pitch gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Inverter Inputs (A1–A6) | CMOS-compatible high-impedance inputs; require external biasing when interfacing with open-collector LSTTL. |
| 2, 4, 6, 8, 10, 12 | Inverter Outputs (Y1–Y6) | Push-pull CMOS outputs; capable of sourcing/sinking 25 mA; tolerate VOUT = –0.5 V to VCC + 0.5 V. |
| 7 | GND | Ground reference for all internal circuitry and I/O; must be low-impedance connection to minimize noise coupling. |
| 14 | VCC | Primary power supply pin; requires local 0.1 µF decoupling capacitor placed within 5 mm of pin for stable AC operation. |
Key Features
| Feature | Design Value |
|---|---|
| Hex unbuffered architecture | Enables independent use of each inverter for discrete logic functions - e.g., one section as Schmitt trigger, another as crystal oscillator, third as LED driver - without inter-stage loading. |
| JEDEC Std. 7.0A compliance | Guarantees interoperability with legacy TTL/CMOS systems and validates noise margin, timing, and drive specifications per industry standard. |
| High noise immunity | CMOS input thresholds provide >40% VCC noise margin at 5 V, reducing susceptibility to EMI in motor-drive or switching-power-supply adjacent layouts. |
| Pb-free, RoHS-compliant packaging | SOIC-14 NB meets EU RoHS Directive 2011/65/EU and JESD204B reflow profile requirements for lead-free assembly. |
Applications
| Crystal Oscillator | RC Pulse Shaper |
|---|---|
Use Scenario: Generating stable clock signals for microcontroller reset circuits or real-time clock modules using a parallel-resonant quartz crystal. IC Role / Device Role / Timing Role: Inverter section configured as linear amplifier in Pierce oscillator topology, providing phase inversion and gain for sustained oscillation. Use Value: Eliminates need for dedicated oscillator IC; operates reliably from 2.5 V to 6.0 V with minimal external components (crystal + two capacitors). | Use Scenario: Converting slow-rising or noisy switch inputs (e.g., mechanical pushbuttons, limit switches) into clean, fast digital edges for MCU GPIO capture. IC Role / Device Role / Timing Role: One inverter used as Schmitt-trigger buffer; remaining sections provide additional signal conditioning or logic inversion. Use Value: Input hysteresis (typ. 0.8 V @ 5 V) rejects contact bounce and EMI; no external resistors required for basic threshold setting. |
| LED Driver | Industrial Logic Interface |
Use Scenario: Directly driving status indicator LEDs in programmable logic controllers or HMI panels where current-sinking configuration simplifies PCB routing. IC Role / Device Role / Timing Role: Inverter output sinking up to 25 mA per LED while maintaining logic-level compatibility with upstream CMOS/TTL sources. Use Value: Avoids discrete transistor drivers; supports common-anode LED layout with VCC-connected anodes and cathodes tied to Yx outputs. | Use Scenario: Level-shifting and signal conditioning between mixed-voltage subsystems - e.g., 3.3 V FPGA I/O interfacing with 5 V sensor bus or relay driver logic. IC Role / Device Role / Timing Role: Inverter used as bidirectional voltage translator via pull-up resistor on input side and direct connection to 5 V domain on output side. Use Value: Supports 2.0–6.0 V operation without external level translators; input compatibility with both CMOS and LSTTL (with pull-ups) enables flexible system integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC04DR | TI part with identical pinout and AC specs; VIH/VIL thresholds differ slightly (VIH = 3.15 V min @ 4.5 V vs. 3.6 V for MC74HCU04A). | Valid for commercial-temp (–40°C to +85°C) designs only; lacks extended temperature qualification. | Select when cost sensitivity outweighs extended temp or automotive qualification needs. |
| NLV74HCU04ADR2G | Same die and SOIC-14 package; AEC-Q100 qualified, PPAP-capable, with NLV prefix indicating automotive-grade traceability and change control. | Required for automotive body electronics, ADAS sensor interfaces, or any application requiring PPAP documentation and zero-defect manufacturing controls. | Choose for automotive OEM or Tier-1 programs where qualification and supply chain traceability are mandatory. |
Compared with SN74HC04DR and NLV74HCU04ADR2G, the MC74HCU04AFR2 offers full industrial temperature range (–55°C to +125°C) and JEDEC 7.0A compliance in a cost-optimized tape-and-reel format - making it ideal for ruggedized industrial, energy, and infrastructure applications where reliability and wide ambient operation are critical.
Availability
MC74HCU04AFR2 is available at Aetrix Electronics and suitable for industrial automation, sensor interface modules, and embedded timing circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MC74HCU04AFR2 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 focused on energy-efficient innovation for automotive, industrial, cloud, medical, and IoT applications.
The MC74HCU04AFR2 belongs to the HCU logic family - designed for high-speed, low-power CMOS applications demanding wide supply voltage tolerance, robust noise immunity, and compatibility with legacy TTL systems.
FAQ
What is the maximum operating temperature for MC74HCU04AFR2?
The MC74HCU04AFR2 is rated for continuous operation from –55°C to +125°C across all package types. This extended temperature range is validated per the Recommended Operating Conditions table in the official datasheet and makes the device suitable for under-hood automotive, industrial motor drives, and outdoor telecom equipment where thermal stress is significant. The SOIC-14 NB package used in MC74HCU04AFR2 maintains parameter stability throughout this full range.
Can MC74HCU04AFR2 drive LSTTL loads directly?
Yes, MC74HCU04AFR2 can directly drive up to 10 LSTTL loads per output, as specified in its features and DC electrical characteristics. Its output drive capability of ±25 mA at VCC = 6.0 V exceeds the LSTTL input current requirement (IIL = –0.4 mA, IIH = 20 µA), and its VOH/VOL levels meet LSTTL voltage thresholds when used with appropriate pull-up resistors on inputs. This eliminates need for buffer stages in mixed-logic-system interfacing.
Is MC74HCU04AFR2 pin-compatible with older TTL inverters?
Yes, MC74HCU04AFR2 has identical pinout to the 74LS04 and MC14069UB devices, as explicitly stated in the datasheet. All six inverter inputs and outputs map to the same SOIC-14 positions, enabling drop-in replacement in legacy designs. However, note that MC74HCU04AFR2 requires proper power decoupling and input termination - unlike LS04, it does not tolerate floating inputs and lacks built-in input hysteresis unless configured externally.
Does MC74HCU04AFR2 support oscillator configurations?
Yes, MC74HCU04AFR2 is explicitly characterized for oscillator use across 2.5 V to 6.0 V supply range. Figures 4 and 5 in the datasheet show crystal and stable RC oscillator topologies using a single inverter section. Its high input impedance, low input current (<1 µA), and symmetrical propagation delays enable reliable startup and sustained oscillation with typical quartz crystals (100 kHz–10 MHz) or RC networks - commonly deployed in clock generation for microcontrollers and real-time peripherals.
What is the meaning of the 'FR2' suffix in MC74HCU04AFR2?
The 'FR2' suffix in MC74HCU04AFR2 indicates tape-and-reel packaging: 'F' denotes Pb-free SOIC-14 NB, 'R2' specifies 2500-unit reel quantity per the ordering information table. This matches the MC74HCU04ADR2G variant listed on page 5 of the datasheet. The FR2 marking confirms RoHS compliance, JEDEC-standard footprint, and automated placement readiness - critical for high-volume SMT manufacturing of industrial control boards and sensor nodes.
MC74HCU04AFR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74HCU
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- XNOR (Exclusive NOR)
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Max):
- 1 µA
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Input Logic Level - Low:
- 0.3V ~ 1.1V
- Input Logic Level - High:
- 1.7V ~ 4.8V
- Max Propagation Delay @ V, Max CL:
- 12ns @ 6V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MC74HCU04AFR2 FAQ
1.How can I place an order for MC74HCU04AFR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74HCU04AFR2 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 MC74HCU04AFR2 reliable?
The price and inventory of MC74HCU04AFR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74HCU04AFR2 is usually 5 days.
3.What payment methods are accepted for MC74HCU04AFR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74HCU04AFR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74HCU04AFR2?
MC74HCU04AFR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74HCU04AFR2 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 MC74HCU04AFR2?
For technical support, including MC74HCU04AFR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74HCU04AFR2 requirements.
6.How does Aetrix verify that MC74HCU04AFR2 is sourced from the original manufacturer or authorized distributors?
All MC74HCU04AFR2 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 MC74HCU04AFR2 meets industry standards.
7.What is the process for return or replacement of MC74HCU04AFR2?
All MC74HCU04AFR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC74HCU04AFR2, 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 MC74HCU04AFR2 part is unused and in its original packaging.
Return procedure for MC74HCU04AFR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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