TLV2785CPWR Equivalent & Substitute Parts

Part Overview

The TLV2785CPWR is a general-purpose operational amplifier manufactured by Texas Instruments, featuring four independent circuits in a 16-TSSOP surface-mount package. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The TLV2785CPWR provides rail-to-rail output capability with low input bias current and is designed for low-voltage applications requiring compact packaging.

Due to Last Time Buy status, identifying equivalent substitute parts is essential for design continuity and long-term supply chain planning. Substitute parts must maintain functional compatibility across critical electrical parameters while accommodating potential package and performance differences.

Substiute Parts

TLV2785CPWR

Texas InstrumentsIn Stock: 1135TLV2785CPWR Datasheet

Current PartRFQ

TLV9064SIRTER

Texas InstrumentsIn Stock: 4527TLV9064SIRTER Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLV2785CPWR is determined by the following critical parameters:

Functional Requirements:

• Four independent amplifier circuits
• Rail-to-rail output capability
• General-purpose amplifier classification
• Surface-mount technology

Electrical Compatibility Criteria:

• Supply voltage range must encompass or exceed the minimum 1.8 V requirement
• Slew rate and gain-bandwidth product must meet or exceed specified values
• Input bias current and input offset voltage must be within acceptable tolerances
• Output current capability must support load requirements
• Operating temperature range must cover the application environment

Compliance Requirements:

• ROHS3 compliance mandatory
• MSL rating of 1 or equivalent
• REACH unaffected status

The TLV9064SIRTER qualifies as a substitute based on these criteria, offering enhanced electrical performance characteristics while maintaining functional compatibility with the TLV2785CPWR in four-circuit amplifier applications.

Parameter Comparison

Engineering Selection Recommendations

TLV9064SIRTER Substitution Basis:

The TLV9064SIRTER is qualified as a direct substitute for the TLV2785CPWR based on the following engineering factors:

Electrical Performance Enhancement: The TLV9064SIRTER exceeds the TLV2785CPWR specifications across multiple parameters. Slew rate increases from 5 V/µs to 6.5 V/µs, and gain-bandwidth product improves from 8 MHz to 10 MHz. Input bias current reduces from 2.5 pA to 0.5 pA, providing superior input impedance characteristics. Output current capability doubles from 23 mA to 50 mA per channel, enabling higher load-driving capacity.

Supply Voltage Compatibility: Both devices operate at the minimum 1.8 V supply voltage. The TLV9064SIRTER extends the maximum supply voltage to 5.5 V, compared to 3.6 V for the TLV2785CPWR, providing greater design flexibility for mixed-voltage systems.

Compliance and Reliability: Both parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring equivalent environmental and handling requirements. The TLV9064SIRTER holds Active product status, guaranteeing long-term availability and supply continuity.

Package Consideration: The TLV9064SIRTER uses 16-WQFN (3x3) packaging versus the 16-TSSOP package of the TLV2785CPWR. PCB layout modifications are required to accommodate the different footprint geometry. The WQFN package includes an exposed pad for enhanced thermal dissipation.

Supply Current Efficiency: The TLV9064SIRTER operates at 538 µA total supply current across four channels, compared to 650 µA for the TLV2785CPWR, representing a 17% reduction in power consumption.

Frequently Asked Questions (FAQ)

Q: Can the TLV9064SIRTER directly replace the TLV2785CPWR without circuit modifications?

A: Electrical substitution is valid; however, PCB layout redesign is mandatory due to package differences. The TLV2785CPWR uses 16-TSSOP packaging while the TLV9064SIRTER uses 16-WQFN (3x3). Pin assignments must be verified against respective datasheets to ensure correct signal routing.

Q: What are the key electrical advantages of the TLV9064SIRTER?

A: The TLV9064SIRTER provides higher slew rate (6.5 V/µs vs. 5 V/µs), increased gain-bandwidth product (10 MHz vs. 8 MHz), lower input bias current (0.5 pA vs. 2.5 pA), and doubled output current capability (50 mA vs. 23 mA per channel). Supply voltage range extends to 5.5 V maximum, and operating temperature range expands to -40°C to 125°C.

Q: Are there temperature range limitations when substituting?

A: The TLV2785CPWR operates from 0°C to 70°C, while the TLV9064SIRTER operates from -40°C to 125°C. If the application requires operation below 0°C or above 70°C, the TLV9064SIRTER provides extended capability. For applications within the 0°C to 70°C range, both devices are functionally equivalent.

Q: What is the impact of package change on thermal management?

A: The 16-WQFN package includes an exposed pad for improved thermal dissipation compared to the 16-TSSOP package. This provides superior heat transfer characteristics, beneficial for high-power applications or elevated ambient temperature environments.

Q: Are both devices RoHS and REACH compliant?

A: Yes, both the TLV2785CPWR and TLV9064SIRTER are ROHS3 compliant and REACH unaffected, meeting equivalent environmental and regulatory requirements.

Q: What supply voltage range should be used for compatibility?

A: For guaranteed compatibility between both devices, operate within the overlapping supply voltage range of 1.8 V to 3.6 V. The TLV9064SIRTER supports extended operation up to 5.5 V, but this extended range is not required for TLV2785CPWR equivalence.

Q: How does the input offset voltage differ between the two parts?

A: The TLV2785CPWR specifies 250 µV input offset voltage, while the TLV9064SIRTER specifies 300 µV. This 50 µV difference is negligible for most general-purpose amplifier applications and does not preclude substitution.

Q: Is the TLV9064SIRTER available in the same packaging as the TLV2785CPWR?

A: No. The TLV9064SIRTER is available only in 16-WQFN (3x3) packaging. The TLV2785CPWR uses 16-TSSOP packaging. PCB redesign is required for substitution.