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Part No NA556N
Manufacturer Texas Instruments
Catalog Clock/Timing - Programmable Timers and Oscillators
Description IC OSC TIMER DUAL 14-DIP

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Pricing & Ordering $2.5987 Historical reference price : is the price that a customer announces that it is willing to pay for this component in the previous period, only for reference.
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Availability: 27,000 pieces
MOQ: 15 pcs
Order Increment : 1 pcs
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Products specifications

Category Integrated Circuits (ICs) - Clock/Timing - Programmable Timers and Oscillators
Mfr Texas Instruments
Package Tube
Product Status Active
Type 555 Type, Timer/Oscillator (Dual)
Voltage - Supply 4.5V ~ 16V
Current - Supply 20 mA
Temperature Range - Operating -40°C ~ 105°C
Package / Case 14-DIP (0.300", 7.62mm)
Supplier Device Package 14-PDIP
Mounting Type Through Hole
Base Product Number NA556
Standard Package 25 pcs
MSL Level 1 (Unlimited)
REACH Status REACH Unaffected
HTSUS 8542.39.0001
Win Source Part Number 646645-NA556N
Fake Threat In the Open Market 67pct.


The Texas Instruments NA556N is a versatile integrated circuit that forms a fundamental building block in a wide array of electronic systems. This precision device is a dual monolithic high-speed timer that can either operate as two independent single timers or be interconnected to provide sequential timing, which is essential for complex timing solutions.

Key Features

  • Dual Timer Configuration: The NA556N consists of two identical, independent timers that can be used for separate timing tasks or combined for interval or pulse-width modulation.
  • Wide Voltage Range: It operates on a voltage range from 4.5V to 16V, making it suitable for interfacing with both TTL and CMOS technologies and allowing it to be used in various applications.
  • High Output Current: Capable of driving up to 200mA, this IC can directly drive loads or trigger relays without additional amplification stages.
  • Adjustable Duty Cycle: The timers offer an adjustable duty cycle, providing the user with precise control over the signal output.
  • Stable Operation: Its design ensures stability and reliability, making it a go-to choice for critical timing applications.


The NA556N is an incredibly flexible component suitable for a variety of applications, including:

  • Precision timing
  • Sequential timing
  • Pulse generation
  • Time delay generation
  • Pulse width modulation (PWM)
  • Missing pulse detection

Design and Quality

Designed with attention to detail, the NA556N is manufactured by Texas Instruments, a leader in semiconductor solutions. Texas Instruments ensures that each IC meets rigorous quality and performance standards. The NA556N is available in an industry-standard 14-pin DIP (Dual In-line Package), making it easy to integrate into both prototyping and production environments.


Whether you're designing consumer electronics, automotive systems, or industrial machinery, the Texas Instruments NA556N provides the reliability and functionality needed for your timing requirements. Its ease of use, combined with Texas Instruments' commitment to quality, makes it an excellent choice for both hobbyists and professional engineers alike.

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