NE555DRE4 Equivalent & Substitute Parts

Part Overview

The NE555DRE4 is a 555 Type Timer/Oscillator (Single) IC manufactured by Texas Instruments, operating at 100kHz in an 8-SOIC surface mount package. This part is classified as Obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The NE555DRE4 operates across a supply voltage range of 4.5V to 16V with a maximum supply current of 10 mA and an operating temperature range of 0°C to 70°C. ROHS3 compliance and unlimited moisture sensitivity level (MSL 1) ensure environmental and reliability standards are met.

Key Parameters

Parameter	Value
Manufacturer Part Number	NE555DRE4
Manufacturer	Texas Instruments
Category	Clock/Timing
Type	555 Type, Timer/Oscillator (Single)
Frequency	100kHz
Voltage - Supply	4.5V ~ 16V
Current - Supply	10 mA
Operating Temperature	0°C ~ 70°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the NE555DRE4 is determined by the following critical parameters: identical 555 Type timer/oscillator functionality, 8-SOIC package compatibility, surface mount mounting type, and electrical specifications within the allowed operating ranges. The key substitution criteria are:

Functional Type: 555 Type, Timer/Oscillator (Single) IC
Package Compatibility: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Voltage Supply Range: 4.5V ~ 16V (minimum requirement)
Current Supply: 10 mA (maximum requirement)
Operating Temperature: 0°C ~ 70°C (minimum requirement)
Compliance: ROHS3 Compliant, MSL 1

Substitute parts are grouped into three categories: MFR Recommended (manufacturer-endorsed direct replacements with active product status), Parametric Equivalents (parts meeting all electrical and mechanical specifications), and Upgrade options (parts with enhanced specifications such as extended temperature ranges or improved performance characteristics).

Parameter Comparison

Part Number	Manufacturer	Type	Frequency	Voltage Supply	Current Supply	Operating Temp	Package	Product Status
NE555DRE4	Texas Instruments	555 Type, Timer/Oscillator (Single)	100kHz	4.5V ~ 16V	10 mA	0°C ~ 70°C	8-SOIC	Obsolete
LM555CM/NOPB	Texas Instruments	555 Type, Timer/Oscillator (Single)	100kHz	4.5V ~ 16V	10 mA	0°C ~ 70°C	8-SOIC	Active
LMC555CM/NOPB	Texas Instruments	555 Type, Timer/Oscillator (Single)	3MHz	1.5V ~ 15V	150 µA	-40°C ~ 85°C	8-SOIC	Last Time Buy
LMC555CMX/NOPB	Texas Instruments	555 Type, Timer/Oscillator (Single)	3MHz	1.5V ~ 15V	150 µA	-40°C ~ 85°C	8-SOIC	Active
LM555CMX/NOPB	Texas Instruments	555 Type, Timer/Oscillator (Single)	100kHz	4.5V ~ 16V	10 mA	0°C ~ 70°C	8-SOIC	Active
NE555DR	UMW	555 Type, Timer/Oscillator (Single)	1mHz ~ 100kHz	4.5V ~ 16V	10 mA	0°C ~ 70°C	8-SOIC	Active
NE555DRG4	Texas Instruments	555 Type, Timer/Oscillator (Single)	100kHz	4.5V ~ 16V	10 mA	0°C ~ 70°C	8-SOIC	Obsolete
MC1455BDR2G	onsemi	555 Type, Timer/Oscillator (Single)	Not specified	4.5V ~ 16V	10 mA	-40°C ~ 85°C	8-SOIC	Active
NCV1455BDR2G	onsemi	555 Type, Timer/Oscillator (Single)	Not specified	4.5V ~ 16V	10 mA	-40°C ~ 125°C	8-SOIC	Active

Engineering Selection Recommendations

Primary Recommendation - MFR Recommended Substitute: LM555CM/NOPB (Texas Instruments) is the direct functional equivalent with identical electrical specifications (100kHz, 4.5V ~ 16V, 10 mA, 0°C ~ 70°C) and 8-SOIC package compatibility. This part carries Active product status, ensuring long-term availability and supply chain stability. ROHS3 compliance and MSL 1 rating match the original specification.

Alternative - Parametric Equivalent with Extended Availability: LM555CMX/NOPB (Texas Instruments) provides identical electrical and mechanical specifications to the NE555DRE4 with Active product status and significantly higher inventory availability (77,170 units). This part is supplied in Cut Tape (CT) & Digi-Reel® packaging, suitable for automated assembly processes.

Cross-Manufacturer Option - Active Status: NE555DR (UMW) maintains full electrical compatibility (4.5V ~ 16V, 10 mA, 0°C ~ 70°C) with Active product status and extensive inventory (189,852 units). This part operates across a frequency range of 1mHz to 100kHz, encompassing the 100kHz specification of the original part.

Enhanced Performance Options: MC1455BDR2G and NCV1455BDR2G (onsemi) offer extended operating temperature ranges (-40°C ~ 85°C and -40°C ~ 125°C respectively) while maintaining 4.5V ~ 16V supply voltage and 10 mA current specifications. These upgrades provide improved thermal performance for demanding applications. Both parts carry Active product status.

Frequently Asked Questions (FAQ)

Q: Can LM555CM/NOPB directly replace NE555DRE4 in existing designs? A: Yes. LM555CM/NOPB is electrically and mechanically identical to NE555DRE4, with matching 100kHz frequency, 4.5V ~ 16V supply voltage, 10 mA current, 0°C ~ 70°C operating temperature, and 8-SOIC package. The primary advantage is Active product status versus the Obsolete status of NE555DRE4.

Q: What is the difference between LM555CMX/NOPB and LM555CM/NOPB? A: Both parts are electrically identical with 100kHz frequency and matching electrical specifications. The difference is packaging: LM555CM/NOPB is supplied in Tube packaging, while LM555CMX/NOPB is supplied in Cut Tape (CT) & Digi-Reel® packaging. LM555CMX/NOPB has significantly higher inventory availability (77,170 units versus 2,027 units).

Q: Can LMC555CM/NOPB or LMC555CMX/NOPB be used as substitutes? A: LMC555CM/NOPB and LMC555CMX/NOPB operate at 3MHz frequency with different electrical specifications (1.5V ~ 15V supply, 150 µA current, -40°C ~ 85°C operating temperature). These parts are not direct substitutes for the 100kHz NE555DRE4 and should only be used if the application specifically requires 3MHz operation and the lower supply voltage range is acceptable.

Q: What are the advantages of MC1455BDR2G or NCV1455BDR2G over LM555CM/NOPB? A: MC1455BDR2G and NCV1455BDR2G (onsemi) provide extended operating temperature ranges. MC1455BDR2G operates from -40°C to 85°C, while NCV1455BDR2G extends to -40°C to 125°C. Both maintain 4.5V ~ 16V supply voltage and 10 mA current specifications. These upgrades are beneficial for applications requiring operation beyond the 0°C ~ 70°C range of the original NE555DRE4.

Q: Is NE555DR from UMW a suitable alternative? A: Yes. NE555DR maintains full electrical compatibility with 4.5V ~ 16V supply voltage, 10 mA current, and 0°C ~ 70°C operating temperature in an 8-SOIC package. The part operates across 1mHz to 100kHz frequency range, which encompasses the 100kHz specification. NE555DR carries Active product status with extensive inventory availability (189,852 units).

Q: Are all substitute parts ROHS3 compliant? A: Yes. All substitute parts listed (LM555CM/NOPB, LMC555CM/NOPB, LMC555CMX/NOPB, LM555CMX/NOPB, NE555DR, NE555DRG4, MC1455BDR2G, and NCV1455BDR2G) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the environmental compliance of NE555DRE4.

Q: What packaging options are available for substitutes? A: Substitute parts are available in multiple packaging formats: Tube (LM555CM/NOPB), Tape & Reel (TR) (LMC555CM/NOPB, NE555DRG4), and Cut Tape (CT) & Digi-Reel® (LMC555CMX/NOPB, LM555CMX/NOPB, NE555DR, MC1455BDR2G, NCV1455BDR2G). Selection depends on assembly process requirements and inventory management preferences.

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