SN74HC266DR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74HC266DR is a quadruple 2-input exclusive-NOR (XNOR) gate IC from Texas Instruments with open-drain outputs, belonging to the HC/UH CMOS logic family with 5.2mA output sink current and 2V to 6V operating range in a 14-pin SOIC package. It performs logic equivalence detection. Available RoHS compliant with worldwide distribution.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- SN74HC266DR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Quad 2-input XNOR (exclusive-NOR) logic gates for equality/equivalence detection
- Open-drain outputs enabling wire-AND configurations and level shifting without pull-up competition
- HC/UH CMOS family operating from 2V to 6V VCC for broad supply compatibility
- 5.2mA output sink current suitable for LED indication and standard logic bus loads
- 50pF load capacitance rating for typical digital interconnect environments
- RoHS compliant lead-free construction in 14-pin SOIC surface-mount package
Applications
The SN74HC266DR is used in digital parity checking, bit comparison, error detection logic, and data validation circuits in embedded systems, communications equipment, and digital signal processing boards. Open-drain outputs make it suitable for bus arbitration, mixed-voltage interfacing with pull-up resistors to different supply rails, and shared bus configurations where multiple devices may drive the same signal line.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | XNOR GATE |
| Max I(ol) | 0.0052A |
| Number of Functions | 4 |
| Number of Inputs | 2 |
| Output Characteristics | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.02mA |
| Prop. Delay@Nom-Sup | 31ns |
| Propagation Delay (tpd) | 155ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74HC266DR:
Frequently Asked Questions
What logic function does the SN74HC266DR perform?
The SN74HC266DR performs exclusive-NOR (XNOR) logic: the output is HIGH (through pull-up resistor) when both inputs are equal (both LOW or both HIGH), and LOW (actively driven) when the inputs differ. This makes it useful for equality detection, bit comparison, and digital parity generation circuits.
Why does the SN74HC266DR have open-drain outputs?
Open-drain outputs on the SN74HC266DR allow multiple device outputs to be wire-ANDed together on a shared bus line without conflict, since only the LOW state is actively driven. A single pull-up resistor connects the shared line to any desired voltage rail, enabling mixed-voltage level shifting without dedicated translators.
What supply voltage range does the SN74HC266DR support?
The SN74HC266DR operates from a supply voltage of 2V to 6V, making it compatible with 3.3V and 5V digital systems. Open-drain outputs can be pulled up to a different voltage than VCC (within the device's absolute maximum rating), enabling easy level translation between different logic supply domains.
What package is the SN74HC266DR available in?
The SN74HC266DR is packaged in a 14-pin SOIC (Small Outline Integrated Circuit) surface-mount package with a 1.27mm pin pitch, which is compatible with standard pick-and-place SMT assembly equipment and widely used in industrial, consumer, and communications electronic designs.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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