Overview
The Texas Instruments SN74HC266DR is a quadruple 2-input exclusive-NOR (XNOR) gate integrated circuit. This device features four independent 2-input XNOR gates with open-drain outputs, performing the Boolean function Y = A ⊕ B in positive logic. It is part of the HC/UH family and operates within a wide voltage range of 2 V to 6 V, making it versatile for various applications.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | 5 | 6 | V |
| Operating Temperature | -40 | 85 | °C | |
| High-Level Input Voltage (VIH) | 3.15 (VCC=4.5V) | 4.2 (VCC=6V) | V | |
| Low-Level Input Voltage (VIL) | 0.5 (VCC=2V) | 1.8 (VCC=6V) | V | |
| Output Current (IOL) | 5.2 | mA | ||
| Quiescent Current (ICC) | 20 | µA | ||
| Input Transition Rise/Fall Time | 0.15 (VCC=6V) | 0.4 (VCC=6V) | ns | |
| Propagation Delay Time (tPLH, tPHL) | 10 (VCC=6V) | 32 (VCC=6V) | ns | |
| Package Type | SOIC (D) 14 pins |
Key Features
- XNOR (Exclusive NOR) Logic Type: Performs the Boolean function Y = A ⊕ B in positive logic.
- Wide Operating Voltage Range: 2 V to 6 V, making it suitable for a variety of applications.
- Open-Drain Outputs: Allows for greater flexibility in circuit design.
- Low Power Consumption: Maximum quiescent current of 20 µA.
- High Output Drive Capability: Can drive up to 10 LSTTL loads.
- Low Input Current: Typical input leakage current of ±100 nA.
- Schmitt-Trigger Inputs: Supports slow or noisy input signals with improved noise rejection.
- Surface Mount Mounting Type: SOIC (D) package with 14 pins.
Applications
- Detect Phase Differences: Useful in applications requiring the detection of phase differences in input signals.
- Selectable Inverter / Buffer: Can be used to create a selectable inverter or buffer in digital circuits.
- Consumer Electronics: Suitable for use in sewing machines, DVDs, VCDs, computers, televisions, washing machines, range hoods, refrigerators, and VCRs.
- Industrial and Automotive Systems: Can be integrated into various industrial and automotive systems due to its robust specifications and wide operating temperature range.
Q & A
- What is the function of the SN74HC266DR?
The SN74HC266DR performs the Boolean function Y = A ⊕ B in positive logic, which is the exclusive-NOR (XNOR) operation.
- What is the operating voltage range of the SN74HC266DR?
The operating voltage range is from 2 V to 6 V.
- What type of outputs does the SN74HC266DR have?
The SN74HC266DR has open-drain outputs.
- What is the maximum quiescent current of the SN74HC266DR?
The maximum quiescent current is 20 µA.
- What is the typical propagation delay time of the SN74HC266DR?
The typical propagation delay time is around 8 ns at 5 V.
- What kind of inputs does the SN74HC266DR support?
The SN74HC266DR supports Schmitt-trigger inputs, which allow for slow or noisy input signals.
- What is the operating temperature range of the SN74HC266DR?
The operating temperature range is from -40°C to 85°C.
- What type of package does the SN74HC266DR come in?
The SN74HC266DR comes in a SOIC (D) package with 14 pins.
- Can the SN74HC266DR drive multiple LSTTL loads?
Yes, it can drive up to 10 LSTTL loads.
- What are some common applications of the SN74HC266DR?
It is used in consumer electronics, industrial systems, and automotive systems.
