ICM7555ISA-T Equivalent & Substitute Parts

Part Overview

The ICM7555ISA-T is a 555 Type Timer/Oscillator (Single) IC manufactured by Analog Devices Inc./Maxim Integrated, designed for clock and timing applications with a maximum frequency of 500kHz. This component is classified as Obsolete, which necessitates identification of equivalent and substitute parts for ongoing design requirements and production continuity. The 8-SOIC surface mount package and specified electrical parameters define the scope for compatible alternatives.

Substiute Parts

ICM7555ISA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 3129ICM7555ISA-T Datasheet

Current PartRFQ

ICM7555ISA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 21995ICM7555ISA+T Datasheet

Parametric EquivalentRFQ

TLC555IDR

Texas InstrumentsIn Stock: 305218TLC555IDR Datasheet

DirectRFQ

ICM7555IBAZ

Renesas Electronics CorporationIn Stock: 20175ICM7555IBAZ Datasheet

UpgradeRFQ

ICM7555IBAZ-T

Renesas Electronics CorporationIn Stock: 52014ICM7555IBAZ-T Datasheet

UpgradeRFQ

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

Substitute parts for the ICM7555ISA-T are identified based on strict electrical and mechanical compatibility criteria. All substitute candidates maintain the 555 Type Timer/Oscillator architecture and 8-SOIC surface mount package. Substitution eligibility is determined by the following parameters:

• Device Type: 555 Type, Timer/Oscillator (Single)
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Voltage Supply Range: Minimum 2V support required
• Operating Temperature Range: Minimum -20°C to 85°C coverage required

Substitute parts are categorized as follows:

• Parametric Equivalent: Identical electrical specifications and packaging
• Direct Manufacturer Alternative: Same device type and package with different frequency and electrical characteristics
• Upgrade Options: Enhanced specifications with extended voltage or temperature ranges

Parameter Comparison

Engineering Selection Recommendations

ICM7555ISA+T is the primary recommended substitute. This part maintains identical electrical specifications and packaging to the obsolete ICM7555ISA-T while offering Active product status, ensuring long-term availability and supply chain continuity.

ICM7555IBAZ-T provides an upgrade path with extended voltage supply range (2V ~ 18V) and improved temperature coverage (-25°C ~ 85°C). This part is manufactured by Renesas Electronics Corporation and carries Active status with higher inventory availability.

TLC555IDR (Texas Instruments, LinCMOS™ series) is suitable for applications requiring higher frequency operation (2.1MHz) and extended low-temperature performance (-40°C). This part is widely available with substantial inventory.

LMC555IM/NOPB (Texas Instruments) offers the widest operating temperature range (-40°C ~ 125°C) and lowest minimum supply voltage (1.5V), though it carries Last Time Buy status. This part is appropriate for designs requiring extreme temperature performance.

ALD7555SAL and ICM7555IBAZ are alternative options with Active status but present constraints: ALD7555SAL has a reduced maximum supply voltage (10V) and narrower temperature range (0°C ~ 70°C); ICM7555IBAZ is supplied in Tube packaging rather than Cut Tape.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and identical ECCN/HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can ICM7555ISA+T be used as a direct replacement for ICM7555ISA-T?

A: Yes. ICM7555ISA+T is a parametric equivalent with identical frequency (500kHz), voltage supply range (2V ~ 16.5V), supply current (30 µA), operating temperature range (-20°C ~ 85°C), and 8-SOIC package. The primary difference is product status (Active vs. Obsolete) and packaging format (Cut Tape vs. standard).

Q: What are the key differences between substitute options?

A: Substitute parts vary in frequency capability, voltage supply range, supply current, and operating temperature range. ICM7555ISA+T maintains identical specifications. ICM7555IBAZ-T extends voltage range to 18V. TLC555IDR increases frequency to 2.1MHz and temperature range to -40°C. LMC555IM/NOPB offers the widest temperature range (-40°C ~ 125°C) and lowest minimum voltage (1.5V). ALD7555SAL limits maximum voltage to 10V.

Q: Are all substitute parts available in 8-SOIC surface mount package?

A: Yes. All listed substitute parts are packaged in 8-SOIC (0.154", 3.90mm Width) surface mount configuration, maintaining mechanical compatibility with the original ICM7555ISA-T footprint.

Q: Do substitute parts maintain RoHS3 compliance?

A: Yes. All substitute parts listed carry ROHS3 Compliant status, MSL Level 1 rating, and REACH Unaffected classification, matching the compliance profile of the original part.

Q: Which substitute part has the highest inventory availability?

A: TLC555IDR (Texas Instruments) has the highest inventory with 305,200 pieces in stock, followed by ICM7555IBAZ-T (Renesas) with 51,910 pieces.

Q: What is the difference between ICM7555IBAZ and ICM7555IBAZ-T?

A: Both parts are manufactured by Renesas Electronics Corporation with identical electrical specifications (1MHz frequency, 2V ~ 18V supply, 60 µA current, -25°C ~ 85°C temperature range). The primary difference is packaging: ICM7555IBAZ is supplied in Tube format, while ICM7555IBAZ-T is supplied in Cut Tape (CT) & Digi-Reel® format.

Q: Can LMC555IM/NOPB be used in applications requiring the full -20°C ~ 85°C temperature range?

A: Yes. LMC555IM/NOPB supports -40°C ~ 125°C operating temperature range, which exceeds the -20°C ~ 85°C requirement of the original ICM7555ISA-T. However, this part carries Last Time Buy status, indicating limited future availability.