LM556J The LM556J is a dual timer IC from NS, offering precise timing from microseconds through hours. It operates in both astable and monostable modes and can source or sink up to 200 mA.
Mfr Part #:

LM556J

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The LM556J is a dual timer IC from NS, offering precise timing from microseconds through hours. It operates in both astable and monostable modes and can source or sink up to 200 mA.
✓ Total Stock: 3,550 pcs
$ Price Range: $12.91

LM556J Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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3,550 pcs
3550 pcs On Request 1 On Request On Request On Request On Request On Request

LM556J Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Mounting Type
Output Current
Storage Temperature
Supply Voltage
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LM556J Description

Short technical summary and product information.

The LM556J is a highly stable dual timing circuit from National Semiconductor (NS) capable of producing accurate time delays or oscillations. It functions as a dual 555 timer, with timing controlled by external resistors and capacitors for each independent timing function. The device operates in both astable and monostable modes, allowing for flexible timing applications.

 

Key features include timing capabilities ranging from microseconds to hours, an adjustable duty cycle, and output structures that can sink or source up to 200 mA. The output and supply are TTL compatible. Temperature stability is better than 0.005% per °C, ensuring reliable performance across various conditions. The LM556J is available in DIP and Small Outline packages.

 

Applications for the LM556J include precision timing, pulse generation, sequential timing, time delay generation, pulse width modulation, pulse position modulation, and linear ramp generation. Its dual-channel design makes it suitable for replacing two individual 555 timers in complex circuits.

LM556J Quick Information

Product Type: Dual Timer IC
Canonical Name: LM556 Dual Timer
Subcategory: Dual Timer

LM556J Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

LM556J Estimated Pricing

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1+ $12.91 $12.91

Estimated market price range - modelled values for guidance only, not live distributor offers.

LM556J Features

  • Dual timer IC replaces two 555 timers.
  • Timing from microseconds through hours.
  • Operates in astable and monostable modes.
  • Output can source or sink 200 mA.
  • Temperature stability better than 0.005%/°C.

LM556J Applications

  • Precision timing applications.
  • Pulse generation and control.
  • Sequential timing circuits.
  • Time delay generation.
  • Linear ramp generators.

LM556J FAQs

7 frequently asked questions generated from this part’s specifications.
What is the supply voltage range for the LM556 dual timer IC?

The supply voltage range is 4.5V to 18V for the LM556, with the LM556C having a maximum supply voltage of 16V.

What is the output current capability of the LM556 dual timer IC?

The output structures can sink or source 200 mA.

What is the operating temperature range for the LM556C?

The LM556C operates from 0°C to 70°C.

What is the storage temperature range for the LM556 dual timer IC?

The storage temperature range is -65°C to 150°C.

What is the RoHS status of the LM556J?

The RoHS status is RoHS3 Compliant.

What is the Moisture Sensitivity Level (MSL) for the LM556J?

The Moisture Sensitivity Level is 1 Unlimited.

What is the REACH status for the LM556J?

The REACH status is REACH Unaffected.

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