TLC555CPS Equivalent & Substitute Parts

Part Overview

The TLC555CPS is a 555 Type Timer/Oscillator (Single) IC manufactured by Texas Instruments, operating at 2.1MHz with a supply voltage range of 2V to 15V. This LinCMOS™ series component is housed in an 8-SO surface mount package and is currently in active production status. The TLC555CPS is designed for timing and oscillator applications requiring low power consumption and wide voltage compatibility. Substitute parts may be necessary due to inventory constraints, packaging preferences, or specific application requirements such as extended temperature ranges or alternative frequency specifications.

Substiute Parts

TLC555CPS

Texas InstrumentsIn Stock: 824TLC555CPS Datasheet

Current PartRFQ

LM555CM/NOPB

Texas InstrumentsIn Stock: 2079LM555CM/NOPB Datasheet

MFR RecommendedRFQ

LM555CMX/NOPB

Texas InstrumentsIn Stock: 77198LM555CMX/NOPB Datasheet

MFR RecommendedRFQ

LMC555CM/NOPB

Texas InstrumentsIn Stock: 15161LMC555CM/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC555CPS is determined by functional equivalence within the 555 Type Timer/Oscillator category. The allowed substitution parameters are:

• Functional Type: 555 Type, Timer/Oscillator (Single) IC
• Package Category: 8-SOIC surface mount configuration
• Voltage Supply Range: Minimum 2V compatibility required
• Operating Temperature Range: Minimum 0°C to 70°C coverage required
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected status
• Mounting Type: Surface Mount

The substitute parts listed maintain functional compatibility through shared 555 timer architecture while accommodating variations in frequency specification, supply current characteristics, and packaging formats (Tube vs. Cut Tape & Digi-Reel®).

Parameter Comparison

Engineering Selection Recommendations

LM555CM/NOPB and LM555CMX/NOPB: Both parts maintain Active product status and full ROHS3 compliance. LM555CMX/NOPB offers significantly higher inventory availability (77,170 pcs) compared to LM555CM/NOPB (2,027 pcs) and is available in Cut Tape & Digi-Reel® packaging for automated assembly processes. Both operate at 100kHz frequency with identical electrical specifications. Selection between these two should be based on packaging and supply chain requirements.

LMC555CM/NOPB: This part carries Last Time Buy status, indicating discontinued production. While it offers the highest frequency specification (3MHz), lowest supply current (150 µA), and extended operating temperature range (-40°C to 85°C), its Last Time Buy designation means future availability cannot be guaranteed. This part should be selected only when its specific performance characteristics are required and long-term supply is not a concern.

All substitute parts maintain the required 8-SOIC surface mount package configuration, ROHS3 compliance, and MSL Level 1 rating. Voltage supply ranges for LM555 variants begin at 4.5V, which may require circuit design consideration if operation below 4.5V is required.

Frequently Asked Questions (FAQ)

Q: Can LM555CM/NOPB directly replace TLC555CPS in my circuit?

A: Functional replacement is possible within the 555 Type Timer/Oscillator category. However, verify that your circuit design accommodates the LM555CM/NOPB minimum supply voltage of 4.5V (versus TLC555CPS at 2V) and the lower frequency specification of 100kHz. Package dimensions differ slightly (0.154" vs. 0.209" width), requiring PCB layout verification.

Q: What is the difference between LM555CM/NOPB and LM555CMX/NOPB?

A: Both parts are electrically identical with matching frequency (100kHz), voltage range (4.5V ~ 16V), and current specifications (10 mA). The primary difference is packaging format: LM555CM/NOPB is supplied in Tube packaging, while LM555CMX/NOPB is available in Cut Tape & Digi-Reel® format. LM555CMX/NOPB has substantially higher inventory availability.

Q: Why is LMC555CM/NOPB marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued this product line. While current inventory is available (15,128 pcs), no future production is planned. This part should only be selected if its specific performance characteristics (3MHz frequency, 150 µA supply current, -40°C to 85°C temperature range) are essential to your application.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (LM555CM/NOPB, LM555CMX/NOPB, and LMC555CM/NOPB) maintain ROHS3 compliance and REACH Unaffected status, matching the regulatory compliance of the TLC555CPS.

Q: What should I consider when selecting between substitute parts?

A: Prioritize based on: (1) Product Status—Active parts (LM555CM/NOPB, LM555CMX/NOPB) offer long-term availability; (2) Packaging Format—LM555CMX/NOPB supports automated assembly; (3) Inventory—LM555CMX/NOPB has the highest stock level; (4) Electrical Requirements—verify frequency, voltage range, and current specifications match your circuit design; (5) Temperature Range—LMC555CM/NOPB provides extended range if required.