Overview
The SN74AC14DBRG4 is a hex Schmitt-trigger inverter integrated circuit produced by Texas Instruments. This device contains six independent inverters, each performing the Boolean function Y = A. The Schmitt-trigger action provides different input threshold levels for positive-going and negative-going signals, ensuring clean, jitter-free output signals even with slow input ramps. The device is temperature compensated and offers a greater noise margin compared to conventional inverters.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Operation | 2 | - | 6 | V |
| Input Voltage | - | - | 6 | V |
| Propagation Delay (tPLH) at 5V | 1.5 | 6 | 13.5 | ns |
| Propagation Delay (tPHL) at 5V | 1.5 | 6 | 11.5 | ns |
| Operating Temperature | -40 | - | 85 | °C |
| Low-Level Output Current (IOL) at 5.5V | - | - | 24 | mA |
| Junction-to-Ambient Thermal Resistance (RθJA) | - | - | 96 | °C/W (SSOP package) |
Key Features
- VCC operation from 2V to 6V, optimized at 5V.
- Inputs accept voltages up to 6V and are TTL-voltage compatible.
- Allows voltage translation from 3.3V to 5V.
- Slow edge rates minimize output ringing.
- Balanced CMOS push-pull outputs capable of sinking and sourcing similar currents.
- Temperature-compensated Schmitt-trigger action for clean, jitter-free output signals.
- Greater noise margin compared to conventional inverters.
Applications
- Synchronize inverted clock inputs.
- Debounce switches.
- Invert digital signals.
- Bus interface applications where output ringing is a concern.
- Use in D-type flip-flops, counters, and other digital circuits.
Q & A
- What is the SN74AC14DBRG4?
The SN74AC14DBRG4 is a hex Schmitt-trigger inverter integrated circuit produced by Texas Instruments.
- What is the voltage range for VCC operation?
The VCC operation range is from 2V to 6V, optimized at 5V.
- What are the input voltage limits?
The inputs can accept voltages up to 6V.
- What is the propagation delay at 5V?
The propagation delay (tPLH and tPHL) at 5V ranges from 1.5ns to 13.5ns and 1.5ns to 11.5ns respectively.
- What are the key features of the SN74AC14DBRG4?
Key features include VCC operation from 2V to 6V, slow edge rates to minimize output ringing, balanced CMOS push-pull outputs, and temperature-compensated Schmitt-trigger action.
- What are some common applications of the SN74AC14DBRG4?
Common applications include synchronizing inverted clock inputs, debouncing switches, inverting digital signals, and use in bus interface and digital circuits.
- What is the operating temperature range of the SN74AC14DBRG4?
The operating temperature range is from -40°C to 85°C.
- What is the junction-to-ambient thermal resistance for the SSOP package?
The junction-to-ambient thermal resistance (RθJA) for the SSOP package is approximately 96°C/W.
- How should the outputs be managed to prevent damage?
Load currents should not exceed 35 mA per output and 70 mA total for the part. Outputs should not be pulled above VCC.
- What is the significance of the Schmitt-trigger action in the SN74AC14DBRG4?
The Schmitt-trigger action provides different input threshold levels for positive-going and negative-going signals, ensuring clean, jitter-free output signals even with slow input ramps.
