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NXP Semiconductors 74HC27D,652
- Part No.:
- 74HC27D,652
- Manufacturer:
- NXP Semiconductors
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
74HC27D,652.pdf
- Description:
- IC GATE NOR
- Quantity:
- Payment:
- Shipping:
Inventory:39,047
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Product details
Overview
74HC27D,652 from Nexperia is a triple 3-input CMOS NOR gate in SO14 (SOT108-1) package, operating from 2.0 V to 6.0 V supply, with propagation delay as low as 8 ns at VCC = 6.0 V and 15 pF load, input clamp diodes enabling overvoltage-tolerant interfacing, and guaranteed operation from −40 °C to +125 °C. It serves as a logic-level combinatorial building block in industrial control sequencers, power management state machines, and digital signal routing circuits.
For engineers reviewing the 74HC27D,652 datasheet, 74HC27D,652 pinout, 74HC27D,652 application, or 74HC27D,652 equivalent, this page delivers verified functional identity, validated SO14 pin mapping, confirmed static/dynamic electrical behavior across temperature, and real-world substitution guidance - all grounded in Nexperia's Rev. 7 (25 March 2024) product data sheet.
Technical Context
This device implements three independent 3-input NOR gates using standard CMOS process technology, each with symmetrical input structure and rail-to-rail output swing. Inputs feature integrated clamp diodes referenced to VCC and GND, allowing safe interface with signals exceeding VCC when used with current-limiting resistors.
It supports two logic families: 74HC27D uses CMOS-compatible input thresholds (VIH ≥ 3.15 V at VCC = 4.5 V), while its 74HCT27D counterpart accepts TTL-level inputs (VIH ≥ 2.0 V). Both share identical pinout, package, and dynamic timing characteristics under matched supply conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Triple 3-input NOR: Y = NOT(A OR B OR C), fully independent per gate |
| Supply Voltage Range | 2.0 V to 6.0 V - enables direct use with 3.3 V and 5 V systems without level translation |
| Propagation Delay (tpd) | 8 ns (typ) at VCC = 6.0 V, CL = 15 pF - ensures sub-10 ns critical path timing in synchronous logic |
| Output Drive Strength | ±4.0 mA at VCC = 4.5 V - sufficient to drive 10 LS-TTL loads or 20 CMOS inputs |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood, motor control, and industrial ambient environments |
| Input Clamp Diodes | Integrated anode-to-VCC and cathode-to-GND - permits safe 5.5 V input on 3.3 V VCC when series resistor limits current to ≤20 mA |
| Power Dissipation (Ptot) | 500 mW max (SO14), derates 10.1 mW/K above 100 °C - defines thermal design margin for continuous operation |
Pinout & Package
74HC27D,652 is housed in a plastic small outline package (SO14, SOT108-1) with 14 leads, 3.9 mm body width, and gull-wing lead form. Pin 1 is marked by a bevelled corner or index notch; the package is RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 2A, 3A | Input A of Gate 1/2/3 | First input terminal per NOR gate; electrically identical, accepts CMOS-level signals |
| 1B, 2B, 3B | Input B of Gate 1/2/3 | Second input terminal per gate; shares same VIH/VIL thresholds and input capacitance (3.5 pF) |
| 1C, 2C, 3C | Input C of Gate 1/2/3 | Third input terminal per gate; internally clamped to VCC/GND for overvoltage protection |
| 1Y, 2Y, 3Y | Output Y of Gate 1/2/3 | Inverting output; VOH ≥ 4.4 V / VOL ≤ 0.26 V at IO = ±4.0 mA, VCC = 4.5 V |
| VCC (Pin 14) | Positive Supply | Primary power rail; must be decoupled locally with 100 nF ceramic capacitor |
| GND (Pin 7) | Ground Reference | 0 V reference for all inputs/outputs; shared return path for all three gates |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 2.0 V to 6.0 V operation eliminates need for separate voltage rails in mixed-supply systems |
| High Noise Immunity | Typical noise margin >1.3 V at VCC = 4.5 V ensures robustness against coupled transients in noisy industrial PCBs |
| Latch-up Immunity | Exceeds 100 mA per JESD78 Class II Level B - prevents destructive latch-up during ESD or surge events |
| ESD Protection | HBM >2000 V and CDM >1000 V - reduces need for external protection in board-level ESD zones |
| Multiple Package Options | SO14 (SOT108-1), TSSOP14 (SOT402-1), DHVQFN14 (SOT762-1) - enables footprint scalability from prototyping to high-density layouts |
Applications
| Industrial PLC I/O Expansion | Digital Power Sequencing |
|---|---|
|
Use Scenario: Adding discrete logic to extend GPIO count in programmable logic controller backplanes where space and BOM count are constrained. IC Role / Device Role / Timing Role: Combinatorial NOR gate implementing enable/disable logic for relay driver banks and analog mux selection. Use Value: Enables deterministic, zero-latency signal inversion and OR-negation without microcontroller intervention or FPGA resource usage. |
Use Scenario: Controlling startup order of multiple DC-DC converters in telecom base station power supplies. IC Role / Device Role / Timing Role: Gate-level sequencing element that asserts reset to downstream converters only after primary rail reaches regulation. Use Value: Provides fail-safe, hardware-based power-up coordination with <10 ns timing uncertainty - immune to firmware hangs or clock faults. |
| Motor Control State Logic | Legacy Bus Interface Translation |
|
Use Scenario: Implementing safety interlock logic in brushless motor inverters where gate drivers require mutually exclusive enable signals. IC Role / Device Role / Timing Role: Real-time combinational logic block generating complementary ENA/ENB signals from direction and fault inputs. Use Value: Guarantees sub-20 ns response to overcurrent events - faster than typical MCU interrupt latency - preventing shoot-through failure. |
Use Scenario: Adapting legacy 5 V TTL control signals to modern 3.3 V microcontroller GPIOs in test equipment retrofit designs. IC Role / Device Role / Timing Role: Level-shifting logic gate leveraging input clamp diodes and CMOS output swing to bridge voltage domains. Use Value: Eliminates need for dedicated level translators or resistor-divider networks - reduces component count and layout area by 3×. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple 3-input NOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT27D,652 | TTL-compatible inputs (VIH ≥ 2.0 V); otherwise identical pinout, timing, and packaging | Better suited for mixed-logic systems with legacy 5 V TTL outputs driving the gate | Select when interfacing directly with 74LS/74ALS family outputs without pull-ups or translators |
| SN74LVC1G02DBVR | Single 2-input NOR in SOT-23-5; lower drive (±24 mA), 1.65–5.5 V supply, no input clamps | Requires three devices and additional board area; lacks overvoltage tolerance | Prefer only for ultra-low-pin-count, single-gate applications where SO14 footprint is prohibitive |
Compared with 74HC27D,652, the 74HCT27D,652 offers seamless integration into TTL-driven systems without redesign, while SN74LVC1G02DBVR trades integration density for flexibility in ultra-compact layouts - neither matches the 74HC27D,652's combination of triple-gate density, input clamping, and wide-voltage robustness in SO14.
Availability
74HC27D,652 is available at Aetrix Electronics and suitable for industrial automation controllers, digital power management modules, and motor drive safety logic requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HC27D,652 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
Nexperia is a global semiconductor expert focused on essential efficiency-enhancing components - including logic, discretes, MOSFETs, and ESD protection - with manufacturing rooted in process discipline and automotive-grade reliability standards.
The 74HC27D,652 belongs to Nexperia's 74HC High-Speed CMOS logic family, engineered for low-power, high-noise-immunity digital interfacing in industrial, consumer, and communications equipment where predictable timing and robust operation are mandatory.
FAQ
Can 74HC27D,652 operate reliably at 3.3 V supply?
Yes. The 74HC27D,652 is fully specified from 2.0 V to 6.0 V, with guaranteed VIH ≥ 2.1 V and VOL ≤ 0.26 V at VCC = 3.3 V and IO = 4.0 mA. Propagation delay is 13 ns (typ) under these conditions, making it suitable for 3.3 V system logic without level shifting.
Does 74HC27D,652 support hot-swap or live-insertion?
No. While input clamp diodes allow limited overvoltage tolerance, the device lacks explicit hot-swap circuitry or power-on reset. Applying VCC before inputs may cause undefined states or excessive current through clamps; proper power sequencing is required per Section 7 limiting values.
What is the maximum capacitive load the outputs can drive?
The outputs are characterized up to 50 pF load capacitance in the datasheet (Table 9). At CL = 50 pF and VCC = 4.5 V, tpd increases to 23 ns (max) and tt to 19 ns (max). For reliable signal integrity beyond 50 pF, add series termination or buffer stages.
Is there a lead-free and RoHS-compliant version of this part?
Yes. 74HC27D,652 is manufactured in full compliance with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The SO14 package uses lead-free matte tin terminations and halogen-free molding compound, as confirmed in Nexperia's material declarations.
74HC27D,652 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- 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:
- -
74HC27D,652 FAQ
1.How can I place an order for 74HC27D,652 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC27D,652 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 74HC27D,652 reliable?
The price and inventory of 74HC27D,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC27D,652 is usually 5 days.
3.What payment methods are accepted for 74HC27D,652?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC27D,652 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC27D,652?
74HC27D,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC27D,652 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 74HC27D,652?
For technical support, including 74HC27D,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC27D,652 requirements.
6.How does Aetrix verify that 74HC27D,652 is sourced from the original manufacturer or authorized distributors?
All 74HC27D,652 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 74HC27D,652 meets industry standards.
7.What is the process for return or replacement of 74HC27D,652?
All 74HC27D,652 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC27D,652, 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 74HC27D,652 part is unused and in its original packaging.
Return procedure for 74HC27D,652:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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