SA555DRG4 Equivalent & Substitute Parts

Part Overview

The SA555DRG4 is a 555 Type Timer/Oscillator (Single) IC manufactured by Texas Instruments, operating at 100kHz with an 8-SOIC surface mount package. This component is classified as Obsolete, which necessitates identification of equivalent and substitute parts for ongoing design requirements and production continuity. The SA555DRG4 maintains ROHS3 compliance and operates across a -40°C to 85°C temperature range with supply voltage tolerance of 4.5V to 16V.

Substiute Parts

SA555DRG4

Texas InstrumentsIn Stock: 1407SA555DRG4 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

LMC555CMX/NOPB

Texas InstrumentsIn Stock: 31858LMC555CMX/NOPB Datasheet

MFR RecommendedRFQ

SA555DR

Texas InstrumentsIn Stock: 125144SA555DR Datasheet

Parametric EquivalentRFQ

NCV1455BDR2G

onsemiIn Stock: 55207NCV1455BDR2G Datasheet

UpgradeRFQ

MC1455BDR2G

onsemiIn Stock: 3298MC1455BDR2G Datasheet

MFR RecommendedRFQ

MC1455DR2G

onsemiIn Stock: 25363MC1455DR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SA555DRG4 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Type: 555 Type, Timer/Oscillator (Single)
• Voltage - Supply: 4.5V ~ 16V (minimum requirement)
• Current - Supply: 10 mA (maximum requirement)
• RoHS Status: ROHS3 Compliant

Substitute parts are grouped into three categories based on functional equivalence:

Category 1: Direct Parametric Equivalents (100kHz Operation) Parts that match all electrical parameters including 100kHz frequency operation, supply voltage range 4.5V ~ 16V, and 10 mA supply current.

Category 2: Manufacturer Recommended Equivalents (100kHz Operation) Texas Instruments parts with identical frequency and electrical specifications but different packaging formats (Tube or Cut Tape).

Category 3: Extended Capability Substitutes (3MHz Operation) Texas Instruments LMC555 series parts with enhanced frequency capability (3MHz), lower supply current (150 µA), and extended supply voltage range (1.5V ~ 15V), suitable for applications requiring higher frequency operation.

Category 4: Cross-Manufacturer Equivalents onsemi MC1455 and NCV1455 series parts maintaining 555 Type architecture, 4.5V ~ 16V supply voltage, and 10 mA supply current with extended temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (100kHz Applications):

SA555DR is the primary direct equivalent, maintaining identical electrical specifications (100kHz, 4.5V ~ 16V, 10 mA) and temperature range (-40°C ~ 85°C) with Active product status. This part is available in Cut Tape & Digi-Reel® packaging format.

LM555CM/NOPB and LM555CMX/NOPB are manufacturer-recommended equivalents with identical frequency and electrical parameters. These parts operate within a narrower temperature range (0°C ~ 70°C) and are suitable for applications not requiring extended low-temperature operation. LM555CMX/NOPB offers higher inventory availability (77,170 pcs) in Cut Tape & Digi-Reel® format.

For Extended Temperature Applications:

NCV1455BDR2G (onsemi) extends the operating temperature range to -40°C ~ 125°C while maintaining 4.5V ~ 16V supply voltage and 10 mA supply current. This part is suitable for high-temperature industrial applications.

For Enhanced Frequency Capability:

LMC555CMX/NOPB provides 3MHz operation with reduced supply current (150 µA) and extended supply voltage range (1.5V ~ 15V). This part is Active with substantial inventory (31,756 pcs) and is appropriate for applications requiring higher frequency operation or lower power consumption.

All recommended substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can SA555DR be used as a direct replacement for SA555DRG4?

A: Yes. SA555DR is a parametric equivalent with identical electrical specifications (100kHz frequency, 4.5V ~ 16V supply voltage, 10 mA supply current) and matching temperature range (-40°C ~ 85°C). Both parts use the 8-SOIC package. The primary difference is packaging format (SA555DR uses Cut Tape & Digi-Reel® versus SA555DRG4's Tape & Reel).

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

A: Both parts are electrically identical (100kHz, 4.5V ~ 16V, 10 mA, 0°C ~ 70°C). The difference is packaging: LM555CM/NOPB is supplied in Tube format, while LM555CMX/NOPB is supplied in Cut Tape & Digi-Reel® format. LM555CMX/NOPB has significantly higher inventory availability (77,170 pcs versus 2,027 pcs).

Q: When should LMC555CMX/NOPB be selected instead of SA555DR?

A: LMC555CMX/NOPB should be selected when applications require 3MHz frequency operation, lower supply current (150 µA versus 10 mA), or extended supply voltage range (1.5V ~ 15V). This part maintains the -40°C ~ 85°C temperature range and is Active with high inventory. Note: LMC555CMX/NOPB is classified as Last Time Buy, indicating limited future availability.

Q: Are onsemi MC1455 and NCV1455 parts fully compatible with SA555DRG4?

A: MC1455BDR2G and NCV1455BDR2G maintain 555 Type architecture, 4.5V ~ 16V supply voltage, 10 mA supply current, and 8-SOIC packaging. These parts are cross-manufacturer equivalents suitable for applications where frequency specification is not critical. NCV1455BDR2G offers extended temperature range (-40°C ~ 125°C) for high-temperature applications.

Q: What packaging formats are available for substitutes?

A: Substitute parts are available in three packaging formats: Tape & Reel (TR), Cut Tape & Digi-Reel®, and Tube. Selection depends on production volume and assembly requirements. Cut Tape & Digi-Reel® format typically offers higher inventory availability and is suitable for both high-volume and prototype applications.

Q: Do all substitute parts maintain ROHS3 compliance?

A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of SA555DRG4.