Overview
The CD74HCT14M96 is a hex inverter integrated circuit produced by Texas Instruments. This device contains six independent inverters with Schmitt-trigger inputs, each performing the Boolean function Y = A in positive logic. It is designed to operate within a wide temperature range of -55°C to +125°C and is compatible with both LSTTL (Low-power Schottky Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) input logic.
The CD74HCT14M96 is available in several package types, including SOIC (Small Outline Integrated Circuit), PDIP (Plastic Dual In-Line Package), TSSOP (Thin Shrink Small Outline Package), and CDIP (Ceramic Dual In-Line Package), making it versatile for various application needs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | -0.5 | 7 | V | |
| Input Clamp Current (IIK) | ±20 | mA | ||
| Output Clamp Current (IOK) | ±20 | mA | ||
| Continuous Output Current (IO) | ±25 | mA | ||
| Continuous Current through VCC or GND | ±50 | mA | ||
| Junction Temperature (TJ) | 150 (Plastic), 175 (Hermetic/Die) | °C | ||
| Lead Temperature (Soldering 10s) | 300 | °C | ||
| Operating Temperature Range | -55 | 125 | °C | |
| Power Supply Voltage Range | 4.5 | 5.5 | V | |
| Transition Time (tt) | 15 (CL = 50 pF, 4.5 V) | 22 | ns |
Key Features
- LSTTL and CMOS Input Logic Compatibility: Compatible with both LSTTL and CMOS input logic, allowing for versatile use in different systems.
- Schmitt-Trigger Inputs: Provides hysteresis, making the device tolerant to slow or noisy inputs and capable of rejecting noise.
- Buffered Inputs: Ensures stable input signals.
- Wide Operating Temperature Range: Operates from -55°C to +125°C, suitable for harsh environments.
- Significant Power Reduction: Compared to LSTTL logic ICs, it offers lower power consumption.
- Balanced CMOS Push-Pull Outputs: Allows the device to sink and source similar currents, ensuring balanced output performance.
- Clamp Diode Structure: Includes positive and negative clamping diodes to protect against voltage spikes.
Applications
- Synchronize Inverted Clock Inputs: Useful in timing and clock signal management.
- Debounce a Switch: Helps in stabilizing switch inputs to prevent multiple triggers from a single switch press.
- Invert a Digital Signal: Essential in various digital logic circuits where signal inversion is required.
Q & A
- What is the CD74HCT14M96 used for?
The CD74HCT14M96 is used as a hex inverter with Schmitt-trigger inputs, suitable for synchronizing inverted clock inputs, debouncing switches, and inverting digital signals.
- What are the operating voltage ranges for the CD74HCT14M96?
The device operates within a voltage range of 4.5 V to 5.5 V.
- What is the significance of Schmitt-trigger inputs in the CD74HCT14M96?
Schmitt-trigger inputs provide hysteresis, making the device tolerant to slow or noisy inputs and capable of rejecting noise.
- What are the different package types available for the CD74HCT14M96?
The device is available in SOIC, PDIP, TSSOP, and CDIP package types.
- What is the maximum junction temperature for the CD74HCT14M96?
The maximum junction temperature is 150°C for plastic packages and 175°C for hermetic packages or die.
- How does the CD74HCT14M96 handle capacitive loads?
The device can drive a load with a total capacitance less than or equal to the maximum load listed, typically ≤ 70 pF for optimal performance.
- What are the benefits of using balanced CMOS push-pull outputs in the CD74HCT14M96?
The balanced outputs allow the device to sink and source similar currents, ensuring balanced performance and preventing issues like ringing in light loads.
- How does the CD74HCT14M96 protect against voltage spikes?
The device includes positive and negative clamping diodes to protect against voltage spikes.
- What is the recommended decoupling capacitor setup for the CD74HCT14M96?
A decoupling capacitor should be placed physically close to the device and electrically close to both the VCC and GND pins.
- Can unused inputs be left floating on the CD74HCT14M96?
No, it is recommended to properly terminate unused inputs to avoid increased dynamic current consumption and other issues.
