SN74AC14NSR
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Texas Instruments SN74AC14NSR

Manufacturer No:
SN74AC14NSR
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC INVERT SCHMITT 6CH 1-IN 14SOP
Delivery:
Payment:
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Product Introduction

Overview

The SN74AC14NSR is a hex Schmitt-trigger inverter integrated circuit produced by Texas Instruments. This device is part of the 74AC series, known for its high-speed and low-power CMOS logic. It features six independent inverting buffers with Schmitt-trigger inputs, which provide hysteresis to improve noise immunity and reduce the likelihood of spurious switching due to noise or slow input transitions.

The SN74AC14NSR is available in a 14-pin SOP (Small Outline Package) and operates over a wide voltage range of 2V to 6V, making it versatile for various digital logic applications.

Key Specifications

Parameter Min Typ Max Unit
VCC (Supply Voltage) 2 6 V
VI (Input Voltage) 0 VCC V
VO (Output Voltage) 0 VCC V
IOH (High-Level Output Current) -12 -24 mA (at VCC = 3V to 5.5V)
IOL (Low-Level Output Current) 12 24 mA (at VCC = 3V to 5.5V)
TA (Operating Free-Air Temperature) -40 85 °C
tPLH (Propagation Delay, A to Y) 1.5 5 10 ns (at VCC = 5V)
tPHL (Propagation Delay, A to Y) 1.5 5 9.5 ns (at VCC = 5V)
RθJA (Junction-to-Ambient Thermal Resistance) 92.4 °C/W (for SOP package)

Key Features

  • VCC Operation Range: 2V to 6V, allowing for operation in a variety of voltage environments.
  • Schmitt-Trigger Inputs: Provides hysteresis to improve noise immunity and reduce spurious switching.
  • Temperature Compensated: Ensures clean, jitter-free output signals even with slow input ramps.
  • Balanced CMOS Push-Pull Outputs: Capable of sinking and sourcing similar currents, minimizing output ringing.
  • Input Voltage Tolerance: Inputs can accept voltages up to 5.5V, making it suitable for voltage translation.
  • Low Drive and Slow Edge Rates: Minimizes overshoot and undershoot on the outputs, ideal for bus interface applications.
  • 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 applications where synchronization is crucial.
  • Debounce Switches: Helps in eliminating noise from mechanical switches, ensuring reliable digital signals.
  • Invert Digital Signals: Can be used in various digital logic circuits where signal inversion is required.
  • Bus Interface Applications: Ideal for applications where output ringing is a concern, such as in D-Type flip-flops and counters.

Q & A

  1. What is the operating voltage range of the SN74AC14NSR?

    The SN74AC14NSR operates over a voltage range of 2V to 6V.

  2. What is the purpose of the Schmitt-trigger inputs in the SN74AC14NSR?

    The Schmitt-trigger inputs provide hysteresis to improve noise immunity and reduce spurious switching due to noise or slow input transitions.

  3. What are the propagation delay times for the SN74AC14NSR?

    The propagation delay times (tPLH and tPHL) are typically around 5ns, with a maximum of 10ns and 9.5ns respectively at VCC = 5V.

  4. Can the inputs of the SN74AC14NSR handle voltages higher than VCC?

    Yes, the inputs can handle voltages up to 5.5V, making it suitable for voltage translation applications.

  5. What is the thermal resistance of the SOP package for the SN74AC14NSR?

    The junction-to-ambient thermal resistance (RθJA) for the SOP package is approximately 92.4°C/W.

  6. How many independent inverting buffers does the SN74AC14NSR contain?

    The SN74AC14NSR contains six independent inverting buffers.

  7. What is the maximum output current per output pin for the SN74AC14NSR?

    The maximum output current per output pin should not exceed 35 mA, with a total limit of 70 mA for the entire device.

  8. Can the SN74AC14NSR be used in high-temperature environments?

    The SN74AC14NSR can operate in temperatures ranging from -40°C to 85°C.

  9. What are some common applications of the SN74AC14NSR?

    Common applications include synchronizing inverted clock inputs, debouncing switches, inverting digital signals, and various bus interface applications.

  10. How should unused push-pull CMOS outputs be handled?

    Unused push-pull CMOS outputs must be left disconnected to prevent any potential damage or malfunction.

Product Attributes

Logic Type:Inverter
Number of Circuits:6
Number of Inputs:1
Features:Schmitt Trigger
Voltage - Supply:2V ~ 6V
Current - Quiescent (Max):2 µA
Current - Output High, Low:24mA, 24mA
Logic Level - Low:0.5V ~ 1.1V
Logic Level - High:2.2V ~ 3.9V
Max Propagation Delay @ V, Max CL:10ns @ 5V, 50pF
Operating Temperature:-40°C ~ 85°C
Mounting Type:Surface Mount
Supplier Device Package:14-SO
Package / Case:14-SOIC (0.209", 5.30mm Width)
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Similar Products

Part Number SN74AC14NSR SN74AC04NSR SN74AC10NSR SN74AC11NSR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active Obsolete
Logic Type Inverter Inverter NAND Gate AND Gate
Number of Circuits 6 6 3 3
Number of Inputs 1 1 3 3
Features Schmitt Trigger - - -
Voltage - Supply 2V ~ 6V 2V ~ 6V 2V ~ 6V 2V ~ 6V
Current - Quiescent (Max) 2 µA 2 µA 2 µA 2 µA
Current - Output High, Low 24mA, 24mA 24mA, 24mA 24mA, 24mA 24mA, 24mA
Logic Level - Low 0.5V ~ 1.1V 0.9V ~ 1.65V 0.9V ~ 1.65V 0.9V ~ 1.65V
Logic Level - High 2.2V ~ 3.9V 2.1V ~ 3.85V 2.1V ~ 3.85V 2.1V ~ 3.85V
Max Propagation Delay @ V, Max CL 10ns @ 5V, 50pF 7ns @ 5V, 50pF 7ns @ 5V, 50pF 8ns @ 5V, 50pF
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Supplier Device Package 14-SO 14-SO 14-SO 14-SO
Package / Case 14-SOIC (0.209", 5.30mm Width) 14-SOIC (0.209", 5.30mm Width) 14-SOIC (0.209", 5.30mm Width) 14-SOIC (0.209", 5.30mm Width)

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