Overview
The SN74HC11PWR, produced by Texas Instruments, is a triple 3-input AND gate integrated circuit. This device is part of the 74HC series, known for its high-speed CMOS logic and low power consumption. It operates within a wide voltage range of 2 V to 6 V and can handle temperatures from –40°C to +85°C, making it versatile for various electronic applications.
Each gate in the SN74HC11PWR performs the Boolean function Y = A ● B ● C in positive logic, making it suitable for logical operations in digital circuits. The device is available in several package types, including the TSSOP (Thin Shrink Small Outline Package) which is designated by the 'PWR' suffix.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| VCC (Supply Voltage) | 2 | 5 | 6 | V |
| VIH (High-level Input Voltage) | 1.5 (VCC=2V) | 3.15 (VCC=4.5V) | 4.2 (VCC=6V) | V |
| VIL (Low-level Input Voltage) | 0.5 (VCC=2V) | 1.35 (VCC=4.5V) | 1.8 (VCC=6V) | V |
| TA (Operating Free-Air Temperature) | -40 | - | 85 | °C |
| Propagation Delay (tpd) | 8 (VCC=6V) | 17 (VCC=6V) | 21 (VCC=6V) | ns |
| Transition Time (tt) | 5 (VCC=6V) | 13 (VCC=6V) | 16 (VCC=6V) | ns |
| Power Dissipation Capacitance per Gate (Cpd) | - | 25 | - | pF |
| Package Type | - | TSSOP (14 pins) | - | - |
| Body Size (Nom) | - | 5.00 mm × 4.40 mm | - | - |
Key Features
- Buffered Inputs: Ensures stable input signals.
- Wide Operating Voltage Range: Operates from 2 V to 6 V.
- Wide Operating Temperature Range: Functional from –40°C to +85°C.
- Low Power Consumption: Significant power reduction compared to LSTTL logic ICs.
- High Fanout Capability: Supports fanout up to 10 LSTTL loads.
- Balanced CMOS Push-Pull Outputs: Capable of sinking and sourcing similar currents.
Applications
- Combining Power Good Signals: Useful in power management systems to combine multiple power good signals.
- Enable Digital Signals: Can be used to enable or disable digital signals based on multiple input conditions.
- General Logic Operations: Suitable for various digital logic applications requiring 3-input AND gates.
Q & A
- What is the operating voltage range of the SN74HC11PWR?
The SN74HC11PWR operates within a voltage range of 2 V to 6 V.
- What is the temperature range for the SN74HC11PWR?
The device is functional from –40°C to +85°C.
- How many AND gates are included in the SN74HC11PWR?
The device contains three independent 3-input AND gates.
- What is the typical propagation delay for the SN74HC11PWR at 6 V?
The typical propagation delay at 6 V is 17 ns.
- What is the recommended capacitive load for optimal performance?
The capacitive load at the output should be ≤ 70 pF for optimal performance.
- How should unused inputs be handled?
Unused inputs must be terminated to either VCC or ground, using pull-up or pull-down resistors if necessary.
- What is the significance of the 'PWR' suffix in the part number?
The 'PWR' suffix indicates that the device is packaged in a TSSOP (Thin Shrink Small Outline Package).
- Can the outputs be left floating if unused?
Yes, unused outputs can be left floating but should not be connected directly to VCC or ground.
- What are the thermal considerations for the SN74HC11PWR?
The device has specified thermal metrics such as junction-to-ambient thermal resistance, which should be considered to avoid overheating.
- How should the input edge rates be managed?
Input signal edge rates should not be slow to avoid oscillations and damaging shoot-through current; recommended rates are defined in the datasheet.
