Overview
The SN74AC14DBR is a hex Schmitt-trigger inverter integrated circuit produced by Texas Instruments. This device is part of the 74AC series and is designed to perform the Boolean function Y = A, utilizing Schmitt-trigger action to provide clean, jitter-free output signals even with slow input ramps. It is optimized for operation at 5 V but can also function with supply voltages ranging from 2 V to 6 V. The SN74AC14DBR features balanced CMOS push-pull outputs, which are TTL-voltage compatible and offer a greater noise margin compared to conventional inverters.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage Range | 2 to 6 | V |
| Quiescent Current (Max) | 2 | µA |
| Output High Current | 24 | mA |
| Output Low Current | 24 | mA |
| Logic Level - Low | 0.5 to 1.1 | V |
| Logic Level - High | 2.2 to 3.9 | V |
| Max Propagation Delay @ V, Max CL | 10 ns @ 5 V, 50 pF | |
| Package Type | SSOP (DB) | |
| No. of Terminals | 14 | |
| Junction-to-ambient thermal resistance | 89.9 | °C/W |
Key Features
- Schmitt-Trigger Action: Provides different input threshold levels for positive-going and negative-going signals, ensuring clean and jitter-free output signals even with slow input ramps.
- Temperature Compensation: Ensures stable operation over a wide temperature range.
- Balanced CMOS Push-Pull Outputs: Capable of sinking and sourcing similar currents, with TTL-voltage compatibility.
- Slow Edge Rates: Minimizes output ringing and overshoot.
- Overvoltage Tolerance: Inputs can tolerate up to 5.5 V at any valid VCC.
- Voltage Translation: Allows voltage translation from 3.3 V to 5 V.
Applications
The SN74AC14DBR is suitable for a variety of applications where low drive and minimal output ringing are critical. These include:
- Bus Interface Applications: Ideal for applications where output ringing needs to be minimized.
- Signal Conditioning: Useful in circuits requiring clean and stable output signals.
- Logic Circuits: Can be used in various logic circuits, including D-type flip-flops and counters.
- Voltage Translation: Effective in translating signals between different voltage levels.
Q & A
- What is the primary function of the SN74AC14DBR?
The SN74AC14DBR performs the Boolean function Y = A, utilizing Schmitt-trigger action to provide clean output signals.
- What is the operating temperature range of the SN74AC14DBR?
The operating temperature range is -40°C to 85°C.
- What is the supply voltage range for the SN74AC14DBR?
The supply voltage range is 2 V to 6 V.
- What type of outputs does the SN74AC14DBR have?
The device features balanced CMOS push-pull outputs.
- How does the Schmitt-trigger action benefit the SN74AC14DBR?
The Schmitt-trigger action provides different input threshold levels for positive-going and negative-going signals, ensuring clean and jitter-free output signals.
- What is the maximum propagation delay for the SN74AC14DBR?
The maximum propagation delay is 10 ns at 5 V with a 50 pF load capacitance.
- What is the package type of the SN74AC14DBR?
The package type is SSOP (DB) with 14 terminals.
- Is the SN74AC14DBR RoHS compliant?
Yes, the SN74AC14DBR is RoHS compliant.
- What are some common applications for the SN74AC14DBR?
Common applications include bus interface applications, signal conditioning, logic circuits, and voltage translation.
- How should unused push-pull CMOS outputs be handled?
Unused push-pull CMOS outputs must be left disconnected.
