ICM7555ESA-T Equivalent & Substitute Parts

Part Overview

The ICM7555ESA-T is a 555 Type Timer/Oscillator (Single) IC manufactured by Analog Devices Inc./Maxim Integrated, operating at 500kHz in an 8-SOIC surface mount package. This part is classified as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity. The ICM7555ESA-T operates across a supply voltage range of 2V to 16.5V with a maximum supply current of 30µA and is rated for operating temperatures from -40°C to 85°C. ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1) ensure compatibility with modern manufacturing standards.

Substiute Parts

ICM7555ESA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 948ICM7555ESA-T Datasheet

Current PartRFQ

ICM7555ESA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 23701ICM7555ESA+T Datasheet

DirectRFQ

TLC555IDR

Texas InstrumentsIn Stock: 305218TLC555IDR Datasheet

DirectRFQ

ALD7555SAL

Advanced Linear Devices Inc.In Stock: 1240ALD7555SAL Datasheet

MFR RecommendedRFQ

LMC555IM/NOPB

Texas InstrumentsIn Stock: 40882LMC555IM/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICM7555ESA-T is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Package / Case: 8-SOIC (0.154", 3.90mm Width) - mechanical compatibility required
• Mounting Type: Surface Mount - assembly process compatibility
• Device Type: 555 Type Timer/Oscillator (Single) - functional equivalence
• RoHS Status: ROHS3 Compliant - regulatory compliance
• Moisture Sensitivity Level: 1 (Unlimited) - manufacturing process compatibility

Secondary Compatibility Parameters:

• Supply Voltage Range: Must encompass or overlap with 2V ~ 16.5V
• Operating Temperature Range: Must encompass or overlap with -40°C ~ 85°C
• Supply Current: Operational parameter; higher values acceptable in most applications

All substitute parts listed maintain identical package geometry, mounting methodology, and functional classification. Frequency variations (500kHz to 3MHz) and supply current differences reflect design variations within the 555 timer architecture and do not preclude functional substitution in most timing applications.

Parameter Comparison

Engineering Selection Recommendations

ICM7555ESA+T - Direct equivalent from the same manufacturer with identical electrical specifications. Active product status ensures long-term availability and supply chain stability. Recommended as the primary replacement for ICM7555ESA-T applications.

TLC555IDR - Texas Instruments LinCMOS™ series alternative. Active product status with high inventory availability (305,200 pcs). Operates within overlapping voltage range (3V ~ 15V) and temperature range (-40°C ~ 85°C). Higher frequency capability (2.1MHz) and increased supply current (360µA) are acceptable for most 555 timer applications. Suitable for designs requiring extended production support.

ALD7555SAL - Advanced Linear Devices manufacturer-recommended substitute. Active product status with limited inventory (1,184 pcs). Operates within reduced voltage range (2V ~ 10V) and narrower temperature range (0°C ~ 70°C). Lower supply current (50µA) provides power efficiency advantage. Suitable for applications operating within specified environmental constraints.

LMC555IM/NOPB - Texas Instruments alternative with Last Time Buy status. Extended operating temperature range (-40°C ~ 125°C) and lowest minimum supply voltage (1.5V) provide design flexibility. Higher supply current (150µA) and Last Time Buy status require consideration for long-term production planning.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical 8-SOIC package geometry, ensuring direct mechanical and regulatory compatibility with the original ICM7555ESA-T design.

Frequently Asked Questions (FAQ)

Q: Can ICM7555ESA+T be used as a direct replacement for ICM7555ESA-T?

A: Yes. ICM7555ESA+T is manufactured by the same company (Analog Devices Inc./Maxim Integrated) with identical electrical specifications: 500kHz frequency, 2V ~ 16.5V supply voltage, 30µA supply current, and -40°C ~ 85°C operating temperature. The only difference is packaging format (Cut Tape & Digi-Reel® versus standard packaging). Active product status ensures continued availability.

Q: What are the key differences between TLC555IDR and the original ICM7555ESA-T?

A: TLC555IDR operates at higher frequency (2.1MHz versus 500kHz) and draws more supply current (360µA versus 30µA). Supply voltage range is slightly narrower (3V ~ 15V versus 2V ~ 16.5V). Operating temperature range remains identical (-40°C ~ 85°C). All parts share identical 8-SOIC package geometry and surface mount mounting type.

Q: Is ALD7555SAL suitable for all ICM7555ESA-T applications?

A: ALD7555SAL is suitable for applications operating within its specified environmental constraints: supply voltage 2V ~ 10V and operating temperature 0°C ~ 70°C. Applications requiring operation below 0°C or above 70°C, or supply voltages above 10V, require alternative substitutes. Verify application requirements before selection.

Q: Why does LMC555IM/NOPB have Last Time Buy status?

A: Last Time Buy status indicates the manufacturer has announced end-of-life for this product. Texas Instruments has established a final purchase deadline. While currently available (40,840 pcs in stock), this part is not recommended for new designs requiring long-term production support. Use for legacy system maintenance only.

Q: Are all substitute parts pin-compatible with ICM7555ESA-T?

A: All substitute parts listed share identical 8-SOIC package geometry (0.154", 3.90mm width) and are functionally equivalent 555 Type Timer/Oscillator devices. Pin compatibility is maintained across all listed alternatives. Verify schematic requirements for frequency and supply current specifications before final selection.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: Moisture Sensitivity Level 1 (Unlimited) indicates the component has no moisture sensitivity restrictions. These parts can be stored indefinitely without desiccant packaging and do not require special handling or baking procedures prior to reflow soldering. All listed substitutes maintain this rating.