OP481GS-REEL Equivalent & Substitute Parts

Part Overview

The OP481GS-REEL is a general purpose operational amplifier integrated circuit manufactured by Analog Devices Inc., configured as a 4-circuit rail-to-rail amplifier in a 14-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design requirements and production continuity. The OP481GS-REEL operates across a supply voltage range of 2.7 V to 12 V with an operating temperature range of -40°C to 85°C, making it suitable for low-power analog signal processing applications.

Key Parameters

Parameter	Value
Manufacturer	Analog Devices Inc.
Part Number	OP481GS-REEL
Category	Linear, Amplifiers
Amplifier Type	General Purpose
Number of Circuits	4
Output Type	Rail-to-Rail
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Voltage - Supply Span (Min)	2.7 V
Voltage - Supply Span (Max)	12 V
Operating Temperature	-40°C ~ 85°C
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the OP481GS-REEL is determined by the following critical parameters: amplifier type (general purpose), number of circuits (4), output type (rail-to-rail), package type (14-SOIC), mounting type (surface mount), and supply voltage compatibility (2.7 V to 12 V minimum). All identified substitute parts maintain these core electrical and mechanical characteristics, ensuring functional equivalence within the specified operating envelope.

The substitute parts are grouped into two categories:

Direct Equivalent (Same Manufacturer): OP481GSZ-REEL7 is manufactured by Analog Devices Inc. and shares identical electrical specifications with the main part, differing only in packaging format (Tape & Reel) and product status (Active).

Functional Equivalent (Alternative Manufacturer): TL974ID and TL974IDR are manufactured by Texas Instruments and provide functional equivalence through identical package configuration and supply voltage range. These parts exhibit enhanced electrical performance characteristics while maintaining mechanical and thermal compatibility.

Parameter Comparison

Parameter	OP481GS-REEL	OP481GSZ-REEL7	TL974ID	TL974IDR
Manufacturer	Analog Devices Inc.	Analog Devices Inc.	Texas Instruments	Texas Instruments
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	4	4	4	4
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate	0.028 V/µs	0.028 V/µs	5 V/µs	5 V/µs
Gain Bandwidth Product	105 kHz	105 kHz	12 MHz	12 MHz
Current - Input Bias	3 nA	3 nA	200 nA	200 nA
Voltage - Input Offset	100 µV	100 µV	1 mV	1 mV
Current - Supply	3.3 µA (x4 Channels)	3.3 µA (x4 Channels)	2 mA (x4 Channels)	2 mA (x4 Channels)
Current - Output / Channel	12 mA	12 mA	80 mA	80 mA
Voltage - Supply Span (Min)	2.7 V	2.7 V	2.7 V	2.7 V
Voltage - Supply Span (Max)	12 V	12 V	12 V	12 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete	Active	Active	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	Not specified	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

OP481GSZ-REEL7 is the primary direct equivalent for OP481GS-REEL replacement. This Analog Devices Inc. part maintains identical electrical specifications and thermal operating range while offering active product status and ROHS3 compliance. Selection of OP481GSZ-REEL7 is appropriate for applications requiring exact electrical performance matching and continuity with the original design specification.

TL974ID and TL974IDR are functional equivalents manufactured by Texas Instruments. These parts provide enhanced electrical performance characteristics including higher slew rate (5 V/µs versus 0.028 V/µs), increased gain bandwidth product (12 MHz versus 105 kHz), higher output current capability (80 mA versus 12 mA per channel), and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C). Both TL974 variants maintain identical package configuration, supply voltage range, and surface mount compatibility. TL974ID is supplied in tube packaging, while TL974IDR is supplied in Cut Tape and Digi-Reel format. Selection of TL974 variants is appropriate for applications where enhanced performance margins and extended temperature operation provide design benefits.

All substitute parts carry ROHS3 compliance and REACH unaffected status, supporting regulatory requirements for new designs and production continuity.

Frequently Asked Questions (FAQ)

Q: Can OP481GSZ-REEL7 be used as a direct replacement for OP481GS-REEL?

A: Yes. OP481GSZ-REEL7 is a direct electrical equivalent with identical specifications for slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current, and supply voltage range. The primary difference is packaging format (Tape & Reel versus reel configuration) and active product status. Pin configuration and 14-SOIC package dimensions are identical, enabling direct substitution in surface mount applications.

Q: What are the key differences between OP481GS-REEL and TL974ID/TL974IDR?

A: The TL974 variants provide enhanced performance with slew rate of 5 V/µs (versus 0.028 V/µs), gain bandwidth product of 12 MHz (versus 105 kHz), input bias current of 200 nA (versus 3 nA), and output current of 80 mA per channel (versus 12 mA). Operating temperature range extends to 125°C (versus 85°C). Supply voltage range and 14-SOIC package configuration remain identical. These differences indicate the TL974 is optimized for higher-speed applications with greater output drive capability.

Q: Are the OP481GS-REEL and substitute parts pin-compatible?

A: Yes. All substitute parts utilize the 14-SOIC package with identical pin configuration and spacing (0.154" width, 3.90mm). Surface mount assembly equipment and PCB layouts designed for OP481GS-REEL are compatible with all identified substitute parts without modification.

Q: What is the significance of the obsolete status for OP481GS-REEL?

A: Obsolete status indicates the OP481GS-REEL is no longer manufactured or supported by Analog Devices Inc. Existing inventory may be limited. OP481GSZ-REEL7 (active status) provides continuity with identical specifications. TL974ID and TL974IDR (active status) provide functional equivalence with enhanced performance characteristics and assured long-term availability.

Q: Can TL974ID and TL974IDR be used interchangeably?

A: Yes. TL974ID and TL974IDR are electrically identical. The difference is packaging format: TL974ID is supplied in tube packaging, while TL974IDR is supplied in Cut Tape and Digi-Reel format. Selection between these variants depends on assembly process requirements and packaging preferences.

Q: What compliance certifications apply to the substitute parts?

A: OP481GSZ-REEL7, TL974ID, and TL974IDR all carry ROHS3 compliance and REACH unaffected status. These certifications support regulatory requirements for electronic components in regulated markets and applications.

Q: Are there thermal considerations when substituting TL974 variants for OP481GS-REEL?

A: The TL974 variants support extended operating temperature range to 125°C (versus 85°C for OP481GS-REEL). This provides additional thermal margin in applications operating near the upper temperature limit of the original design. No thermal derating is required for applications within the original -40°C to 85°C specification.

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