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NXP Semiconductors 74HC7266D,652
- Part No.:
- 74HC7266D,652
- Manufacturer:
- NXP Semiconductors
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HC7266D,652.pdf
- Description:
- IC GATE XNOR 4CH 2-INP 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,141
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Product details
Overview
74HC7266D,652 from NXP Semiconductors (formerly Philips) is a quad 2-input EXCLUSIVE-NOR gate IC in SO14 package, operating at 2–6 V supply, with typical propagation delay of 11 ns at 5 V and 15 pF load, used for logic-level signal comparison and parity generation in digital control systems.
For engineers reviewing the 74HC7266D,652 datasheet, 74HC7266D,652 pinout, 74HC7266D,652 application, or 74HC7266D,652 equivalent, key selection criteria include guaranteed operation across −40 °C to +125 °C, push-pull output drive capability, JEDEC 7A compliance, and pin compatibility with LSTTL logic families.
Technical Context
The 74HC7266D,652 implements four independent EXNOR gates using high-speed Si-gate CMOS technology, each with active push-pull outputs and no internal pull-ups or open-drain configuration. It meets JEDEC standard no. 7A and supports rail-to-rail input voltage ranges (GND to VCC).
Its AC performance is characterized across three supply voltages (2.0 V, 4.5 V, 6.0 V) and temperature ranges (−40 °C to +85 °C and −40 °C to +125 °C), with propagation delays tightly specified up to 175 ns at 2.0 V and −40 °C, and transition times as low as 6 ns at 6.0 V and +25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0 V to 6.0 V - supports mixed-voltage system interfacing and battery-powered 3.3 V/5 V logic domains |
| tPHL / tPLH (typ) | 11 ns at VCC = 5 V, CL = 15 pF - enables reliable timing in sub-20 MHz synchronous logic paths |
| Input Capacitance | 3.5 pF - minimizes capacitive loading on driving stages and preserves signal edge integrity |
| CPD per Gate | 17 pF - used to calculate dynamic power dissipation under switching conditions per gate |
| Operating Temperature | −40 °C to +125 °C - qualified for automotive under-hood and industrial control environments |
| Output Type | Active push-pull - provides symmetrical sourcing/sinking current without external pull resistors |
Pinout & Package
74HC7266D,652 is housed in a 14-pin small outline (SO14) package with standard JEDEC MO-153 footprint, 1.27 mm pitch, and gull-wing leads suitable for reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8, 12 | 1A, 2A, 3A, 4A | First input of each EXNOR gate - accepts full-rail CMOS logic levels (GND to VCC) |
| 2, 6, 9, 13 | 1B, 2B, 3B, 4B | Second input of each EXNOR gate - electrically identical to A inputs; no priority or inversion |
| 3, 4, 10, 11 | 1Y, 2Y, 3Y, 4Y | Active-high EXNOR outputs - Y = HIGH when both inputs match (LL or HH) |
| 7 | GND | Logic ground reference - must be connected directly to system ground plane |
| 14 | VCC | Positive supply - decoupling capacitor (100 nF) required within 10 mm of this pin |
Key Features
| Feature | Design Value |
|---|---|
| Quad EXNOR Function | Four independent 2-input gates in one SO14 package - reduces board space vs discrete gate implementations |
| JEDEC 7A Compliance | Guarantees interoperability with industry-standard TTL and CMOS logic families |
| LSTTL Pin Compatibility | Direct replacement for 74LS7266 in existing designs without PCB modification |
| Push-Pull Output Stage | Eliminates need for external pull-up resistors and supports bidirectional bus driving |
Applications
| Motor Control Logic | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Detecting direction reversal in H-bridge motor drivers by comparing complementary PWM signals. IC Role / Device Role / Timing Role: EXNOR gate compares phase-aligned A/B signals to generate enable/disable pulses for gate drivers. Use Value: Matches exact logic truth table (LL→H, HH→H) to assert valid direction state only when signals are synchronized. | Use Scenario: Validating redundant sensor inputs (e.g., dual limit switches) before actuating safety relays. IC Role / Device Role / Timing Role: Performs bitwise equality check across paired inputs to confirm consistent status reporting. Use Value: Delivers deterministic HIGH output only when both sensors agree - critical for fail-safe decision logic. |
| Data Path Parity Generation | Digital Communication Interface |
Use Scenario: Generating even parity bits for 4-bit data words transmitted over legacy parallel buses. IC Role / Device Role / Timing Role: Each EXNOR computes bit-pair equivalence; cascaded outputs yield final parity result. Use Value: Enables real-time parity calculation with <12 ns latency per stage - meets tight timing budgets in microcontroller peripherals. | Use Scenario: Level-shifting and signal conditioning between 3.3 V FPGA I/O and 5 V legacy peripheral interfaces. IC Role / Device Role / Timing Role: Acts as bidirectional logic translator using VCC = 3.3 V while accepting 5 V-tolerant inputs (per HC family spec). Use Value: Supports mixed-voltage interconnect without external level shifters or voltage dividers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar EXCLUSIVE-NOR logic applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT7266D,653 | TTL-compatible input thresholds (VIH ≈ 2.0 V min); otherwise identical AC/DC specs and pinout | Better suited for direct interface with 5 V TTL outputs without level shifting | Select when driving from legacy 74LS/74F sources or where input noise margin at 3.3 V systems is marginal |
| SN74HC7266DR | Same logic function and electrical specs; SOIC-14 package but different moisture sensitivity level (MSL 1 vs MSL 3) and reel packaging | Identical functional behavior; differs only in tape-and-reel format and humidity handling requirements | Prefer for high-volume SMT assembly with automated pick-and-place requiring MSL 1 qualification |
Compared with 74HC7266D,652, the 74HCT7266D,653 offers improved input compatibility with older TTL families, while SN74HC7266DR delivers identical logic performance with enhanced manufacturability for automated production - neither requires PCB changes, but differ in interface robustness and assembly logistics.
Availability
74HC7266D,652 is available at Aetrix Electronics and suitable for motor control logic, industrial PLC I/O modules, data path parity generation, and digital communication interface applications requiring stable component supply across extended temperature ranges.
Supply support for 74HC7266D,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
NXP Semiconductors is a global semiconductor company delivering secure, scalable solutions for automotive, industrial, and IoT applications, with roots in Philips' pioneering logic IC development.
The 74HC7266D,652 belongs to NXP's legacy HC logic family - designed for low-power, high-noise-immunity digital control in resource-constrained embedded systems and industrial automation hardware.
FAQ
What logic function does the 74HC7266D,652 implement?
The 74HC7266D,652 implements four independent 2-input EXCLUSIVE-NOR (EXNOR) gates. Its truth table yields HIGH output only when both inputs are identical (LL or HH). This function is essential for equality detection, parity generation, and phase comparison tasks in digital systems where precise logical equivalence matters.
Is the 74HC7266D,652 compatible with 3.3 V microcontroller I/O?
Yes, the 74HC7266D,652 operates reliably from 2.0 V to 6.0 V, making it fully compatible with 3.3 V logic systems. Its input thresholds scale with VCC, ensuring correct recognition of 3.3 V HIGH/LOW levels. The 74HC7266D,652 also drives standard CMOS loads without level-shifting circuitry.
Does the 74HC7266D,652 have open-drain outputs?
No, the 74HC7266D,652 features active push-pull outputs - not open-drain. Each output can actively source and sink current, eliminating the need for external pull-up resistors. This architecture ensures fast, clean transitions and simplifies design in bus-driving or wired-OR configurations where the 74HC7266D,652 is deployed.
Can the 74HC7266D,652 replace a 74LS7266 in an existing design?
Yes, the 74HC7266D,652 is pin compatible with 74LS7266 and offers identical pinout and logic function. While its CMOS input structure draws negligible static current versus TTL, the 74HC7266D,652 maintains compatible voltage thresholds and timing margins for most LSTTL-driven circuits - often enabling drop-in upgrade.
What is the maximum operating temperature for the 74HC7266D,652?
The 74HC7266D,652 is rated for operation from −40 °C to +125 °C, qualifying it for under-hood automotive and industrial control environments. This extended range is confirmed in the AC characteristics table of the original Philips datasheet and applies to all SO14-packaged variants including 74HC7266D,652.
74HC7266D,652 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- XNOR (Exclusive NOR)
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Input Logic Level - Low:
- 0.5V ~ 1.8V
- Input Logic Level - High:
- 1.5V ~ 4.2V
- Max Propagation Delay @ V, Max CL:
- 20ns @ 6V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
74HC7266D,652 FAQ
1.How can I place an order for 74HC7266D,652 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC7266D,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 74HC7266D,652 reliable?
The price and inventory of 74HC7266D,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC7266D,652 is usually 5 days.
3.What payment methods are accepted for 74HC7266D,652?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC7266D,652 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC7266D,652?
74HC7266D,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC7266D,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 74HC7266D,652?
For technical support, including 74HC7266D,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC7266D,652 requirements.
6.How does Aetrix verify that 74HC7266D,652 is sourced from the original manufacturer or authorized distributors?
All 74HC7266D,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 74HC7266D,652 meets industry standards.
7.What is the process for return or replacement of 74HC7266D,652?
All 74HC7266D,652 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC7266D,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 74HC7266D,652 part is unused and in its original packaging.
Return procedure for 74HC7266D,652:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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