CD74HC14E
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Texas Instruments CD74HC14E

Manufacturer No:
CD74HC14E
Manufacturer:
Texas Instruments
Package:
Tube
Description:
IC INVERT SCHMITT 6CH 1-IN 14DIP
Delivery:
Payment:
iso14001
iso45001
iso9001
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Product Introduction

Overview

The CD74HC14E 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 part of the 74HC series, known for its high-speed CMOS logic and wide operating voltage range of 2 V to 6 V. The CD74HC14E is available in a 14-pin PDIP (Plastic Dual In-Line Package) and is designed to operate over a wide temperature range from -55°C to +125°C.

Key Specifications

Parameter Min Max Unit
VCC Supply Voltage -0.5 7 V
Input Clamp Current (VI < -0.5 V or VI > VCC + 0.5 V) -20 20 mA
Output Clamp Current -20 20 mA
Operating Temperature Range -55 125 °C
Input Leakage Current (VI = VCC or 0) -1 1 µA
Supply Current (IO = 0) 2 40 µA
Input Capacitance 10 10 pF
Junction-to-Ambient Thermal Resistance (RθJA) 69.3 69.3 °C/W

Key Features

  • Buffered Inputs: The device features buffered inputs which help in stabilizing the input signals.
  • Schmitt-Trigger Inputs: Each inverter has Schmitt-trigger inputs, providing hysteresis and making the device tolerant to slow or noisy inputs.
  • Wide Operating Voltage Range: Operates over a voltage range of 2 V to 6 V.
  • Wide Operating Temperature Range: Functions over a temperature range of -55°C to +125°C.
  • High Fanout Capability: Supports fanout up to 10 LSTTL loads.
  • Power Reduction: Significant power reduction compared to LSTTL logic ICs.
  • Balanced CMOS Push-Pull Outputs: Allows the device to sink and source similar currents, ensuring balanced output.
  • Clamp Diode Structure: Inputs and outputs have both positive and negative clamping diodes for protection.

Applications

  • Synchronize Inverted Clock Inputs: Useful in synchronizing clock signals in digital circuits.
  • Debounce a Switch: Can be used to debounce switches, reducing the effects of switch bouncing.
  • Invert a Digital Signal: Primary function is to invert digital signals, which is essential in various digital logic circuits.

Q & A

  1. What is the operating voltage range of the CD74HC14E?

    The CD74HC14E operates over a voltage range of 2 V to 6 V.

  2. What type of inputs does the CD74HC14E have?

    The CD74HC14E has Schmitt-trigger inputs.

  3. What is the maximum operating temperature of the CD74HC14E?

    The maximum operating temperature is +125°C.

  4. How many independent inverters does the CD74HC14E contain?

    The device contains six independent inverters.

  5. What is the purpose of the Schmitt-trigger inputs?

    Schmitt-trigger inputs provide hysteresis, making the device tolerant to slow or noisy inputs and helping to reject noise.

  6. What is the fanout capability of the CD74HC14E?

    The device supports fanout up to 10 LSTTL loads.

  7. How should unused inputs be handled?

    Unused inputs must be terminated to either VCC or ground to prevent them from floating.

  8. What is the typical supply current of the CD74HC14E?

    The typical supply current is between 2 µA and 40 µA when IO = 0.

  9. What is the junction-to-ambient thermal resistance of the CD74HC14E in PDIP package?

    The junction-to-ambient thermal resistance (RθJA) is 69.3 °C/W.

  10. What are some common applications of the CD74HC14E?

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

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:5.2mA, 5.2mA
Logic Level - Low:0.3V ~ 1.2V
Logic Level - High:1.5V ~ 4.2V
Max Propagation Delay @ V, Max CL:23ns @ 6V, 50pF
Operating Temperature:-55°C ~ 125°C
Mounting Type:Through Hole
Supplier Device Package:14-PDIP
Package / Case:14-DIP (0.300", 7.62mm)
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Similar Products

Part Number CD74HC14E CD74HC14M CD74HC04E CD74HC10E CD74HC11E
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active Active Active
Logic Type Inverter Inverter Inverter NAND Gate AND Gate
Number of Circuits 6 6 6 3 3
Number of Inputs 1 1 1 3 3
Features Schmitt Trigger Schmitt Trigger - - -
Voltage - Supply 2V ~ 6V 2V ~ 6V 2V ~ 6V 2V ~ 6V 2V ~ 6V
Current - Quiescent (Max) 2 µA 2 µA 2 µA 2 µA 2 µA
Current - Output High, Low 5.2mA, 5.2mA 5.2mA, 5.2mA 5.2mA, 5.2mA 5.2mA, 5.2mA 5.2mA, 5.2mA
Logic Level - Low 0.3V ~ 1.2V 0.3V ~ 1.2V 0.5V ~ 1.8V 0.5V ~ 1.8V 0.5V ~ 1.8V
Logic Level - High 1.5V ~ 4.2V 1.5V ~ 4.2V 1.5V ~ 4.2V 1.5V ~ 4.2V 1.5V ~ 4.2V
Max Propagation Delay @ V, Max CL 23ns @ 6V, 50pF 23ns @ 6V, 50pF 14ns @ 6V, 50pF 17ns @ 6V, 50pF 17ns @ 6V, 50pF
Operating Temperature -55°C ~ 125°C -55°C ~ 125°C -55°C ~ 125°C -55°C ~ 125°C -55°C ~ 125°C
Mounting Type Through Hole Surface Mount Through Hole Through Hole Through Hole
Supplier Device Package 14-PDIP 14-SOIC 14-PDIP 14-PDIP 14-PDIP
Package / Case 14-DIP (0.300", 7.62mm) 14-SOIC (0.154", 3.90mm Width) 14-DIP (0.300", 7.62mm) 14-DIP (0.300", 7.62mm) 14-DIP (0.300", 7.62mm)

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