TLE2142MDRG4 Equivalent & Substitute Parts

Part Overview

The TLE2142MDRG4 is a general-purpose operational amplifier manufactured by Texas Instruments, featuring dual circuits in an 8-SOIC surface-mount package. This device is classified as Last Time Buy, indicating discontinued production status. The TLE2142MDRG4 provides rail-to-rail output capability with a 5.9 MHz gain-bandwidth product and operates across a wide supply voltage range of 4 V to 44 V. Identification of equivalent and substitute parts is necessary due to the Last Time Buy status, which restricts future availability and requires design alternatives for ongoing production requirements.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	45	V/µs
Gain Bandwidth Product	5.9	MHz
Current - Input Bias	700	nA
Voltage - Input Offset	290	µV
Current - Supply (x2 Channels)	6.9	mA
Current - Output / Channel	50	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	44	V
Operating Temperature	-55 to 125	°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

Substitute parts for the TLE2142MDRG4 are grouped based on functional and electrical compatibility within the 8-SOIC package form factor. The primary substitution criteria are:

Critical Parameters for Substitution:

Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Number of Circuits: 2
Operating Temperature Range: Minimum -40°C (acceptable for most applications requiring -55°C to 125°C)
Supply Voltage Compatibility: Devices must operate within overlapping voltage ranges

Substitution Groups:

Group 1: Direct General-Purpose Replacements (Preferred) The TLE2142MDR (Texas Instruments) serves as the manufacturer-recommended direct substitute, maintaining identical electrical specifications and rail-to-rail output capability. The ADA4075-2ARZ series (Analog Devices) provides general-purpose amplification with comparable gain-bandwidth product and supply current characteristics, though with reduced slew rate (12 V/µs versus 45 V/µs).

Group 2: J-FET Input Alternatives The AD8512ARZ series and ADA4000-2ARZ series offer J-FET input stages, providing significantly lower input bias current (25 pA and 5 pA respectively, versus 700 nA). These alternatives are suitable for applications requiring ultra-low input bias current but operate within restricted supply voltage ranges (10 V to 30 V for AD8512; 8 V to 36 V for ADA4000).

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and 8-SOIC package compatibility.

Parameter Comparison

Parameter	TLE2142MDRG4	TLE2142MDR	ADA4075-2ARZ-RL	AD8512ARZ-REEL7	ADA4000-2ARZ-RL
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Amplifier Type	General Purpose	General Purpose	General Purpose	J-FET	J-FET
Number of Circuits	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	—	—	—
Slew Rate (V/µs)	45	45	12	20	20
Gain Bandwidth Product (MHz)	5.9	5.9	6.5	8	5
Current - Input Bias (nA)	700	700	30	0.025	0.005
Voltage - Input Offset (µV)	290	290	200	100	200
Current - Supply (mA, x2 Channels)	6.9	6.9	1.8	2.2	1.35
Current - Output / Channel (mA)	50	50	40	70	28
Voltage - Supply Span Min (V)	4	4	9	10	8
Voltage - Supply Span Max (V)	44	44	36	30	36
Operating Temperature (°C)	-55 to 125	-55 to 125	-40 to 125	-40 to 125	-40 to 125
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
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: TLE2142MDR

The TLE2142MDR is the manufacturer-recommended substitute and maintains complete electrical and functional equivalence to the TLE2142MDRG4. This part is in Active product status with 5,914 units in stock, ensuring long-term availability. The TLE2142MDR is identical in all critical specifications: 45 V/µs slew rate, 5.9 MHz gain-bandwidth product, rail-to-rail output, and 4 V to 44 V supply range. The only difference is packaging format (Tape & Reel versus Tape & Reel with specific reel configuration). This part requires no circuit redesign and is suitable for direct replacement in all applications.

Secondary Recommendation: ADA4075-2ARZ-RL

The ADA4075-2ARZ-RL (Analog Devices) is suitable for applications where reduced supply current (1.8 mA versus 6.9 mA) is beneficial and slew rate requirements do not exceed 12 V/µs. This part maintains general-purpose amplifier functionality with 6.5 MHz gain-bandwidth product and is in Active status with 7,050 units in stock. The supply voltage range (9 V to 36 V) is narrower than the TLE2142MDRG4, requiring verification of circuit supply specifications. Input bias current is significantly lower (30 nA versus 700 nA), which may improve performance in high-impedance signal paths.

Tertiary Recommendation: AD8512ARZ-REEL7 or ADA4000-2ARZ-RL

J-FET input alternatives are recommended only for applications requiring ultra-low input bias current (25 pA for AD8512; 5 pA for ADA4000). The AD8512ARZ-REEL7 offers the highest output current capability (70 mA) and 8 MHz gain-bandwidth product but is limited to 10 V to 30 V supply range. The ADA4000-2ARZ-RL provides the lowest input bias current and supply current but reduced output current (28 mA) and 5 MHz gain-bandwidth product. Both J-FET alternatives require circuit redesign to accommodate restricted supply voltage ranges and are suitable only when input bias current specifications are critical design parameters.

All recommended substitutes maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can the TLE2142MDR be used as a direct replacement for the TLE2142MDRG4 without circuit modification?

A: Yes. The TLE2142MDR is electrically and functionally identical to the TLE2142MDRG4. All specifications including slew rate, gain-bandwidth product, supply voltage range, and output current are identical. The only difference is the packaging format designation. No circuit modification is required.

Q: What is the primary reason for finding substitutes for the TLE2142MDRG4?

A: The TLE2142MDRG4 is classified as Last Time Buy, indicating that Texas Instruments has discontinued production. This status restricts future availability and requires identification of alternative parts for ongoing production requirements. The TLE2142MDR is the manufacturer-recommended active alternative.

Q: Why do the ADA4075-2ARZ and AD8512ARZ series have different supply voltage ranges than the TLE2142MDRG4?

A: The ADA4075-2ARZ series requires a minimum 9 V supply (versus 4 V for TLE2142MDRG4) and maximum 36 V (versus 44 V). The AD8512ARZ series requires 10 V to 30 V. These restrictions are inherent to the device architectures and cannot be modified. Circuit supply specifications must be verified before substitution.

Q: What is the significance of input bias current differences between the TLE2142MDRG4 and J-FET alternatives?

A: The TLE2142MDRG4 has 700 nA input bias current (bipolar input stage), while J-FET alternatives (AD8512ARZ: 25 pA; ADA4000-2ARZ: 5 pA) have significantly lower input bias current. Lower input bias current reduces errors in high-impedance signal conditioning circuits and minimizes offset voltage drift with temperature. Selection depends on whether the application requires ultra-low input bias current performance.

Q: Are all substitute parts compatible with the same printed circuit board layout?

A: Yes. All substitute parts use the 8-SOIC (0.154", 3.90mm Width) package and are surface-mount devices. PCB footprints are identical, allowing direct physical replacement without layout modification. However, circuit supply voltage ranges must be verified before substitution, as some alternatives have restricted supply voltage specifications.

Q: What is the difference between the various ADA4075-2ARZ packaging options (ARZ, ARZ-R7, ARZ-RL)?

A: The base part number ADA4075-2ARZ is identical in electrical specifications across all packaging variants. The suffix designations indicate different tape and reel configurations: ARZ (Tube), ARZ-R7 (Cut Tape & Digi-Reel), and ARZ-RL (Tape & Reel). Selection depends on manufacturing equipment compatibility and quantity requirements. All variants are electrically equivalent.

Q: Can the TLE2142MDRG4 be substituted with a single-channel operational amplifier?

A: No. The TLE2142MDRG4 contains two independent amplifier circuits in a single package. Any substitute must also provide dual-channel functionality. Single-channel alternatives would require two separate packages and significant circuit redesign.

Q: What compliance certifications are maintained across all substitute parts?

A: All substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited) rating. REACH status is Unaffected for all parts. These certifications ensure compatibility with standard manufacturing processes and storage requirements without special handling.

Q: How does slew rate affect circuit performance, and why does the TLE2142MDRG4 have higher slew rate than some alternatives?

A: Slew rate (V/µs) determines the maximum rate of output voltage change. The TLE2142MDRG4 provides 45 V/µs, while ADA4075-2ARZ provides 12 V/µs and AD8512ARZ provides 20 V/µs. Higher slew rate is required for high-frequency signal conditioning and fast transient response. Applications with bandwidth requirements below 100 kHz typically tolerate lower slew rates. Verify circuit bandwidth requirements before selecting lower-slew-rate alternatives.

Q: Is the TLE2142MDR available in the same tape and reel configuration as the TLE2142MDRG4?

A: The TLE2142MDR is supplied in Tape & Reel (TR) format, which is compatible with standard pick-and-place manufacturing equipment. The TLE2142MDRG4 designation includes specific reel configuration details. Both are suitable for automated assembly. Verify reel specifications with your supplier if specific reel diameter or hub type is required.

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