Overview
The SN74HC14DBR, produced by Texas Instruments, is a hex inverter integrated circuit with Schmitt-trigger inputs. This device contains six independent inverters, each performing the Boolean function Y = A in positive logic. It is part of the HC (High-Speed CMOS) logic family, known for its wide operating voltage range and significant power reduction compared to LSTTL logic ICs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 2 to 6 | V |
| Operating Temperature Range | -40 to 85 | °C |
| Input Voltage Range | 0 to VCC | V |
| Output Voltage Range | 0 to VCC | V |
| Propagation Delay (tpd) at 6V | 11 to 26 | ns |
| Transition Time (tt) at 6V | 6 to 16 | ns |
| Input Leakage Current (II) | ±0.1 to ±1 | µA |
| Supply Current (ICC) | 2 to 40 | µA |
| Input Capacitance (Ci) | 3 to 10 | pF |
| Package Type | SSOP-14 | |
| Body Size | 6.40 mm × 5.30 mm |
Key Features
- Buffered inputs with Schmitt-trigger characteristics for noise immunity.
- Wide operating voltage range: 2 V to 6 V.
- Wide operating temperature range: -40°C to +85°C.
- Significant power reduction compared to LSTTL logic ICs.
- Supports fanout up to 10 LSTTL loads.
- Balanced CMOS push-pull outputs capable of sourcing and sinking similar currents.
Applications
- Synchronizing inverted clock inputs.
- Debouncing switches.
- Inverting digital signals.
Q & A
- What is the primary function of the SN74HC14DBR? The primary function is to perform six independent inverter operations with Schmitt-trigger inputs.
- What is the operating voltage range of the SN74HC14DBR? The operating voltage range is 2 V to 6 V.
- What is the operating temperature range of the SN74HC14DBR? The operating temperature range is -40°C to +85°C.
- What type of inputs does the SN74HC14DBR have? The SN74HC14DBR has buffered inputs with Schmitt-trigger characteristics.
- How many inverters are included in the SN74HC14DBR? The device contains six independent inverters.
- What is the typical propagation delay at 6V? The typical propagation delay at 6V is between 11 and 26 ns.
- What is the purpose of Schmitt-trigger inputs? Schmitt-trigger inputs provide noise immunity by requiring a specific voltage threshold to be crossed for the input to be considered a logic HIGH or LOW.
- How should unused inputs be handled? Unused inputs should be terminated to either VCC or ground, either directly or with a pull-up or pull-down resistor.
- What is the maximum fanout for the SN74HC14DBR? The device supports fanout up to 10 LSTTL loads.
- What is the package type of the SN74HC14DBR? The package type is SSOP-14.
