TLE2081ID Equivalent & Substitute Parts

Part Overview

The TLE2081ID is a J-FET input operational amplifier manufactured by Texas Instruments in the Excalibur™ series. This device is a single-circuit, 8-SOIC surface mount integrated circuit designed for applications requiring low input bias current and high input impedance characteristics. The TLE2081ID is currently in Last Time Buy status, indicating discontinued production. Identification of equivalent and substitute parts is necessary to ensure design continuity and procurement availability for new production runs and legacy system support.

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	1	—
Slew Rate	45	V/µs
Gain Bandwidth Product	10	MHz
Current - Input Bias	20	pA
Voltage - Input Offset	490	µV
Current - Supply	1.7	mA
Current - Output / Channel	48	mA
Voltage - Supply Span (Min)	4.5	V
Voltage - Supply Span (Max)	38	V
Operating Temperature	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLE2081ID is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Amplifier Type: J-FET input architecture
Number of Circuits: Single circuit configuration
Package / Case: 8-SOIC form factor (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Supply Voltage Range: Minimum 4.5V to maximum 38V operating span
Operating Temperature Range: -40°C to 85°C minimum

Mechanical Compatibility Criteria:

Supplier Device Package: 8-SOIC or 8-SO
Surface Mount compatibility with standard PCB assembly processes

Substitute parts are grouped into two categories based on electrical performance alignment:

Category 1: Direct Electrical Equivalents (TLE2081 Base Product Family)

TLE2081IDR: Identical electrical specifications, Tape & Reel packaging, Active product status
Packaging variation only; electrical performance matches TLE2081ID

Category 2: Enhanced Performance Alternatives (AD8610 Base Product Family)

AD8610ARZ, AD8610ARZ-REEL, AD8610ARZ-REEL7, AD8610BRZ, AD8610BRZ-REEL, AD8610BRZ-REEL7
Superior electrical performance: 60V/µs slew rate, 25MHz gain bandwidth product, 3pA input bias current
Extended operating temperature to 125°C
Reduced input offset voltage (45-85µV vs. 490µV)
Supply voltage range: 10V to 26V (narrower than TLE2081ID)
Active product status with higher inventory availability

Category 3: General Purpose Alternative (LT1008 Base Product Family)

LT1008S8#PBF, LT1008S8#TRPBF
General Purpose amplifier type (not J-FET optimized)
Significantly lower slew rate (0.2V/µs)
Higher input bias current (100pA)
Lower supply current (380µA)
Operating temperature: 0°C to 70°C
Supply voltage range: 4V to 36V

Parameter Comparison

Parameter	TLE2081ID	TLE2081IDR	AD8610ARZ	AD8610BRZ	LT1008S8#PBF
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Amplifier Type	J-FET	J-FET	J-FET	J-FET	General Purpose
Number of Circuits	1	1	1	1	1
Slew Rate (V/µs)	45	45	60	60	0.2
Gain Bandwidth Product (MHz)	10	10	25	25	—
Current - Input Bias (pA)	20	20	3	3	100
Voltage - Input Offset (µV)	490	490	85	45	30
Current - Supply (mA)	1.7	1.7	3	3	0.38
Current - Output / Channel (mA)	48	48	45	45	—
Voltage - Supply Span Min (V)	4.5	4.5	10	10	4
Voltage - Supply Span Max (V)	38	38	26	26	36
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 125	-40 to 125	0 to 70
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Product Status	Last Time Buy	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

TLE2081IDR is the primary substitute for TLE2081ID. Both devices share identical electrical specifications, operating temperature range, and supply voltage parameters. The only difference is packaging format: TLE2081ID is supplied in Tube packaging, while TLE2081IDR is supplied in Tape & Reel format. TLE2081IDR maintains Active product status with higher inventory availability (1307 pcs vs. 1195 pcs). Both are ROHS3 compliant with MSL 1 rating. Selection of TLE2081IDR is appropriate for applications where packaging format does not impose assembly constraints.

For Enhanced Performance Applications:

The AD8610 family (AD8610ARZ, AD8610ARZ-REEL, AD8610ARZ-REEL7, AD8610BRZ, AD8610BRZ-REEL, AD8610BRZ-REEL7) provides superior electrical performance with 60V/µs slew rate and 25MHz gain bandwidth product compared to TLE2081ID specifications of 45V/µs and 10MHz. Input bias current is reduced to 3pA, and input offset voltage ranges from 45µV to 85µV. Operating temperature extends to 125°C. All AD8610 variants maintain ROHS3 compliance and MSL 1 rating. Selection of AD8610 devices is appropriate for applications requiring higher bandwidth, faster transient response, or extended temperature operation. Supply voltage range limitation (10V to 26V) must be verified against circuit requirements, as TLE2081ID supports 4.5V to 38V operation.

For Low-Power Applications:

LT1008S8#PBF and LT1008S8#TRPBF are general-purpose amplifiers with significantly lower supply current (380µA vs. 1.7mA). These devices are appropriate only for applications where J-FET input characteristics are not required and where reduced slew rate (0.2V/µs) and bandwidth are acceptable. Operating temperature range is limited to 0°C to 70°C. Selection of LT1008 devices requires verification that application performance requirements do not depend on J-FET input architecture or high-speed transient response.

Frequently Asked Questions (FAQ)

Q1: Can TLE2081IDR be used as a direct replacement for TLE2081ID in existing designs?

A: Yes. TLE2081IDR is electrically identical to TLE2081ID across all specified parameters including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current, supply voltage range, and operating temperature. The only difference is packaging format (Tape & Reel vs. Tube). Designs using TLE2081ID can transition to TLE2081IDR without circuit modification. Verify that assembly equipment is compatible with Tape & Reel format if TLE2081IDR is selected.

Q2: What are the key differences between TLE2081ID and AD8610 devices?

A: AD8610 devices provide enhanced electrical performance: slew rate increases from 45V/µs to 60V/µs, gain bandwidth product increases from 10MHz to 25MHz, and input bias current decreases from 20pA to 3pA. Input offset voltage is significantly reduced (45-85µV vs. 490µV). Operating temperature extends to 125°C. However, supply voltage range is narrower (10V to 26V vs. 4.5V to 38V). All devices maintain 8-SOIC package compatibility and ROHS3 compliance. Selection depends on whether application requirements prioritize bandwidth and precision (AD8610) or wide supply voltage range (TLE2081ID).

Q3: Is LT1008S8 suitable as a substitute for TLE2081ID?

A: LT1008S8 is not recommended as a direct substitute. While both devices are single-circuit operational amplifiers in 8-SOIC packages, LT1008S8 is a general-purpose amplifier, not a J-FET input device. Slew rate is significantly lower (0.2V/µs vs. 45V/µs), input bias current is higher (100pA vs. 20pA), and operating temperature range is limited (0°C to 70°C vs. -40°C to 85°C). Selection of LT1008S8 is appropriate only for applications where J-FET input characteristics are not required and where reduced bandwidth is acceptable.

Q4: What packaging options are available for AD8610 substitutes?

A: AD8610 devices are available in multiple packaging formats: AD8610ARZ (Tube), AD8610ARZ-REEL (Cut Tape & Digi-Reel®), AD8610ARZ-REEL7 (Cut Tape & Digi-Reel®), AD8610BRZ (Tube), AD8610BRZ-REEL (packaging not specified), and AD8610BRZ-REEL7 (Cut Tape & Digi-Reel®). All variants share identical electrical specifications. Selection of packaging format depends on assembly process requirements and inventory management preferences. Tube format is suitable for manual assembly or small-volume production. Cut Tape & Digi-Reel® format is optimized for automated high-volume assembly.

Q5: Are all substitute parts RoHS3 compliant?

A: Yes. TLE2081IDR, all AD8610 variants, and LT1008S8 devices are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All devices are REACH Unaffected and classified as EAR99 for export control purposes. Compliance certifications are identical across all substitute options.

Q6: What is the inventory status of substitute parts?

A: TLE2081IDR (Active status, 1307 pcs), AD8610ARZ (Active status, 2100 pcs), AD8610ARZ-REEL (Active status, 50400 pcs), AD8610ARZ-REEL7 (Active status, 3525 pcs), AD8610BRZ (Active status, 2200 pcs), AD8610BRZ-REEL (Active status, 2000 pcs), AD8610BRZ-REEL7 (Active status, 2040 pcs), LT1008S8#PBF (Active status, 1221 pcs), and LT1008S8#TRPBF (Active status, 1843 pcs) are all in Active product status with new original stock available. TLE2081ID is in Last Time Buy status. For long-term design continuity, transition to Active status devices is recommended.

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