Overview
The SN74AHCT14DG4, produced by Texas Instruments, is a hex Schmitt-trigger inverter integrated circuit. This device contains six independent inverters, each performing the Boolean function Y = A. The Schmitt-trigger action allows these inverters to handle noisy or slow input signals effectively by having different input threshold levels for positive-going (VT+) and negative-going (VT–) signals.
The SN74AHCT14 series is part of the Advanced High-Speed CMOS (AHC) family, which is known for its high speed, low power consumption, and robust ESD protection. This makes the SN74AHCT14DG4 suitable for a wide range of applications requiring reliable and efficient signal inversion.
Key Specifications
| Parameter | Unit | Min | Max | |
|---|---|---|---|---|
| Operating Voltage Range | V | 4.5 | - | 5.5 |
| Propagation Delay (tPLH, tPHL) at CL = 15 pF | ns | 4 | 7 | 8 |
| Propagation Delay (tPLH, tPHL) at CL = 50 pF | ns | 5.5 | 8 | 9 |
| ESD Protection | V | - | - | 2000 (Human-Body Model), 200 (Machine Model), 1000 (Charged-Device Model) |
| Latch-up Performance | mA | - | - | 250 |
| Power Dissipation Capacitance (Cpd) | pF | - | 12 | - |
| Operating Temperature Range | °C | -40 | - | 125 |
Key Features
- Inputs are TTL-voltage compatible.
- ESD protection exceeds JESD 22 standards (2000V Human-Body Model, 200V Machine Model, 1000V Charged-Device Model).
- Latch-up performance exceeds 250 mA per JESD 17.
- Schmitt-trigger inputs enable resistance to input noise.
- Low power consumption with a maximum ICC of 20 µA.
- Available in various packages including SOIC, SSOP, TVSOP, PDIP, SOP, TSSOP, VQFN, and WQFN.
Applications
- Servers and network switches.
- Telecom infrastructures.
- Test and measurement equipment.
- Computer peripherals and desktop computers.
- UPS and white goods.
- Printers and AC servo drives.
Q & A
- What is the primary function of the SN74AHCT14DG4?
The SN74AHCT14DG4 is a hex Schmitt-trigger inverter, performing the Boolean function Y = A for six independent inverters.
- What is the operating voltage range for the SN74AHCT14DG4?
The operating voltage range is from 4.5V to 5.5V.
- What kind of ESD protection does the SN74AHCT14DG4 offer?
The device offers ESD protection exceeding JESD 22 standards: 2000V Human-Body Model, 200V Machine Model, and 1000V Charged-Device Model.
- What is the typical propagation delay for the SN74AHCT14DG4?
The typical propagation delay is around 7 ns for a load capacitance of 15 pF and 8 ns for a load capacitance of 50 pF.
- What are the key features of the Schmitt-trigger inputs in the SN74AHCT14DG4?
The Schmitt-trigger inputs provide resistance to input noise and can handle very slow or noisy input signals effectively.
- What are some common applications for the SN74AHCT14DG4?
Common applications include servers, network switches, telecom infrastructures, test and measurement equipment, computer peripherals, and more.
- What is the maximum power dissipation capacitance (Cpd) for the SN74AHCT14DG4?
The maximum power dissipation capacitance (Cpd) is 12 pF.
- What is the operating temperature range for the SN74AHCT14DG4?
The operating temperature range is from -40°C to 125°C.
- What types of packages are available for the SN74AHCT14DG4?
The device is available in various packages including SOIC, SSOP, TVSOP, PDIP, SOP, TSSOP, VQFN, and WQFN.
- How does the SN74AHCT14DG4 handle latch-up performance?
The device's latch-up performance exceeds 250 mA per JESD 17.
