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LS1240AD1 The STMicroelectronics LS1240AD1 is a telecom interface IC designed as an electronic two-tone ringer. It operates with a 26V supply voltage and a 30mA supply current.
Mfr Part #:

LS1240AD1

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics LS1240AD1 is a telecom interface IC designed as an electronic two-tone ringer. It operates with a 26V supply voltage and a 30mA supply current.
✓ Total Stock: 2,000 pcs

LS1240AD1 Available from 1 distributor

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Components Technology Group, Inc. ✓
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2,000 pcs
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LS1240AD1 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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LS1240AD1 Description

Short technical summary and product information.

The STMicroelectronics LS1240AD1 is a monolithic integrated circuit designed to replace mechanical bells in telephone sets. It functions as an electronic two-tone ringer, capable of driving a piezoceramic converter or a dynamic loudspeaker.

 

Key electrical specifications include a supply voltage of 26V and a supply current of 30mA. The device operates within a temperature range of -40°C to 70°C. It features adjustable tone and switching frequencies via external components and includes integrated voltage and current hysteresis for stable operation.

 

This IC is housed in an 8-SOIC package and is designed for surface mounting. Its low current consumption allows for parallel operation of up to four devices. The integrated rectifier bridge with zener diodes provides protection against overvoltages, requiring minimal external circuitry.

LS1240AD1 Quick Information

Product Type: Telecom Interface IC
Canonical Name: STMicroelectronics LS1240AD1 Tone Ringer IC
Subcategory: Tone Ringer

LS1240AD1 Compliance

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

LS1240AD1 Features

  • Electronic two-tone ringer IC.
  • Operates at 26V supply voltage.
  • Low 30mA supply current consumption.
  • Wide -40°C to 70°C temperature range.
  • Surface mount 8-SOIC package.

LS1240AD1 Applications

  • Used in telecom tone ringing circuits.
  • Suitable for direct drive of piezoceramic buzzers.
  • Ideal for telephone line interface applications.
  • Applicable in line voltage detection and switching.
  • Used in line protection and voltage regulation circuits.

LS1240AD1 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the supply voltage for the LS1240AD1?

The supply voltage is 26V.

What is the operating temperature range for the LS1240AD1?

The operating temperature range is -40°C to 70°C.

What package type is the LS1240AD1 supplied in?

The LS1240AD1 is supplied in an 8-SOIC package.

What is the RoHS status of the LS1240AD1?

The RoHS status is RoHS3 Compliant.

What is the Moisture Sensitivity Level (MSL) for the LS1240AD1?

The Moisture Sensitivity Level is 1 Unlimited.

What is the function of the LS1240AD1?

The function is Tone Ringer.

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