TLE2021AID Equivalent & Substitute Parts

Part Overview

The TLE2021AID is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface-mount package. This device is classified as obsolete, though 975 pieces remain in current inventory. The TLE2021AID belongs to the Excalibur™ series and is ROHS3 compliant.

Due to the obsolete product status of the TLE2021AID, identifying equivalent and substitute parts is necessary for design continuity, long-term supply chain planning, and new production runs. Substitute parts must maintain electrical compatibility across critical parameters including supply voltage range, slew rate, gain bandwidth product, input bias current, and output current capability.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Slew Rate	0.65	V/µs
Gain Bandwidth Product	1.7	MHz
Current - Input Bias	25	nA
Voltage - Input Offset	80	µV
Current - Supply	240	µA
Current - Output / Channel	20	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	40	V
Operating Temperature Range	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the TLE2021AID is determined by strict electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Supply voltage range must encompass or match the TLE2021AID range (4 V to 40 V minimum and maximum)
Slew rate, gain bandwidth product, input bias current, and input offset voltage must be within acceptable operational limits for the intended application
Output current capability must meet or exceed 20 mA per channel
Supply current consumption must be compatible with power budget constraints

Mechanical Compatibility Criteria:

Package type must be 8-SOIC surface-mount configuration
Pin count and footprint must be identical (8-pin SOIC)
Mounting type must be surface mount

Compliance Criteria:

RoHS3 compliance is required
REACH unaffected status is required

The substitute parts identified below meet these criteria with variations in product status (active vs. obsolete), packaging format (tube vs. tape & reel), and manufacturer (Texas Instruments vs. Analog Devices Inc.).

Parameter Comparison

Parameter	TLE2021AID	TLE2021AIDR	LT1008S8#PBF	LT1008S8#TRPBF
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.
Product Status	Obsolete	Active	Active	Active
Packaging	Tube	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	1	1	1	1
Slew Rate (V/µs)	0.65	0.65	0.2	0.2
Gain Bandwidth Product (MHz)	1.7	1.7	1.7	1.7
Current - Input Bias (nA)	25	25	0.1	0.1
Voltage - Input Offset (µV)	80	80	30	30
Current - Supply (µA)	240	240	380	380
Current - Output / Channel (mA)	20	20	20	20
Voltage - Supply Span Min (V)	4	4	4	4
Voltage - Supply Span Max (V)	40	40	36	36
Operating Temperature (°C)	-40 to 85	-40 to 85	0 to 70	0 to 70
Package / Case	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

TLE2021AIDR (Texas Instruments)

The TLE2021AIDR is the direct equivalent to the TLE2021AID, differing only in packaging format (tape & reel versus tube) and product status (active versus obsolete). All electrical parameters are identical. This part is the primary substitute for new production and long-term supply chain continuity. The active product status ensures ongoing availability and manufacturing support. Current inventory is 1314 pieces.

LT1008S8#PBF and LT1008S8#TRPBF (Analog Devices Inc.)

The LT1008S8 series from Analog Devices Inc. provides functional equivalence with the following considerations:

Maximum supply voltage is 36 V, compared to 40 V for the TLE2021AID. Applications requiring the full 40 V supply range cannot use this substitute.
Operating temperature range is 0°C to 70°C, narrower than the TLE2021AID range of -40°C to 85°C. Applications requiring extended temperature operation below 0°C or above 70°C are not compatible.
Input bias current is 0.1 nA (100 pA), significantly lower than the TLE2021AID at 25 nA, providing improved performance in high-impedance applications.
Input offset voltage is 30 µV, lower than the TLE2021AID at 80 µV, providing improved precision.
Slew rate is 0.2 V/µs, lower than the TLE2021AID at 0.65 V/µs, limiting high-speed transient response.
Supply current is 380 µA, higher than the TLE2021AID at 240 µA, increasing power consumption.

The LT1008S8#PBF is packaged in tube format with 1221 pieces in inventory. The LT1008S8#TRPBF is packaged in tape & reel format with 1843 pieces in inventory. Both are active products with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can the TLE2021AIDR directly replace the TLE2021AID in existing designs?

A: Yes. The TLE2021AIDR is electrically and mechanically identical to the TLE2021AID. The only difference is packaging format (tape & reel versus tube). Pin configuration, electrical performance, and compliance certifications are identical. No design changes are required.

Q: What are the limitations of using LT1008S8 as a substitute for TLE2021AID?

A: The LT1008S8 has three key limitations: (1) maximum supply voltage is 36 V instead of 40 V, (2) operating temperature range is 0°C to 70°C instead of -40°C to 85°C, and (3) slew rate is 0.2 V/µs instead of 0.65 V/µs. Applications requiring any of these extended specifications cannot use the LT1008S8.

Q: Are there performance advantages to using LT1008S8 over TLE2021AID?

A: Yes. The LT1008S8 offers lower input bias current (0.1 nA versus 25 nA) and lower input offset voltage (30 µV versus 80 µV), making it superior for precision, high-impedance applications. However, these advantages come with higher supply current consumption (380 µA versus 240 µA) and lower slew rate (0.2 V/µs versus 0.65 V/µs).

Q: What is the difference between LT1008S8#PBF and LT1008S8#TRPBF?

A: Both parts are electrically identical. The difference is packaging format: LT1008S8#PBF is supplied in tube packaging, while LT1008S8#TRPBF is supplied in tape & reel format. Tape & reel packaging is typically used for automated assembly processes, while tube packaging is used for manual handling or lower-volume applications.

Q: Is the TLE2021AIDR suitable for new product designs?

A: Yes. The TLE2021AIDR has active product status, ensuring ongoing manufacturing support and supply availability. It is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for new designs.

Q: Can I use LT1008S8 in applications requiring -40°C operation?

A: No. The LT1008S8 operating temperature range begins at 0°C. Applications requiring operation below 0°C must use the TLE2021AID or TLE2021AIDR, which are rated to -40°C.

Q: What is the pin-to-pin compatibility between these parts?

A: All four parts (TLE2021AID, TLE2021AIDR, LT1008S8#PBF, and LT1008S8#TRPBF) use the 8-SOIC package with identical pin configuration and footprint. Direct PCB substitution is possible without layout modifications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message