TS12A4515P Equivalent & Substitute Parts

Part Overview

The TS12A4515P is a single-circuit SPST-NC (Normally Closed) analog switch manufactured by Texas Instruments, housed in an 8-DIP through-hole package. This component functions as a high-speed electronic switch with 10Ω on-state resistance and operates across a 2.7V to 12V supply range. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure design continuity and support long-term product availability for applications requiring SPST-NC switching functionality.

Substiute Parts

TS12A4515P

Texas InstrumentsIn Stock: 3804TS12A4515P Datasheet

Current PartRFQ

TMUX6202RQXR

Texas InstrumentsIn Stock: 2905TMUX6202RQXR Datasheet

MFR RecommendedRFQ

MAX4515EPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 892MAX4515EPA+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TS12A4515P is determined by the following critical parameters:

• Switch Circuit Configuration: Must be SPST - NC topology with 1:1 multiplexer/demultiplexer circuit and single circuit count
• On-State Resistance: Maximum allowable resistance determines signal integrity and power dissipation; substitutes must not exceed application requirements
• Supply Voltage Range: Substitute must operate within or encompass the 2.7V ~ 12V range
• Operating Temperature Range: Substitute must support -40°C ~ 85°C minimum
• Package Compatibility: Through-hole 8-DIP package is preferred for direct PCB replacement; surface-mount alternatives require board redesign
• Compliance Standards: ROHS3 compliance required for regulatory alignment

Two substitute parts meet the core functional requirements while presenting distinct trade-offs in package type, on-state resistance, and supply voltage capability.

Parameter Comparison

Engineering Selection Recommendations

MAX4515EPA+ (Recommended for Direct Replacement)

The MAX4515EPA+ is the preferred substitute for applications requiring minimal design modification. This part maintains identical through-hole 8-DIP packaging, enabling direct PCB socket replacement without layout changes. Both the TS12A4515P and MAX4515EPA+ support the 2V to 12V supply range and operate across -40°C to 85°C. The MAX4515EPA+ carries Active product status, ensuring long-term availability and supply chain stability. On-state resistance of 20Ω is higher than the original 10Ω specification; circuit designs must accommodate this increased resistance in signal path calculations and power dissipation budgets. ROHS3 compliance and identical packaging make this the lowest-risk substitution path.

TMUX6202RQXR (Performance-Optimized Alternative)

The TMUX6202RQXR offers superior electrical performance with 1.8Ω on-state resistance, reducing signal attenuation and power loss compared to the original part. This substitute supports an extended supply voltage range of 4.5V to 36V and operates across -40°C to 125°C, providing broader environmental tolerance. However, this part requires surface-mount implementation in an 8-WFDFN package, necessitating PCB redesign and assembly process changes. Switch timing characteristics are slower (140ns/150ns versus 75ns/45ns), which may impact high-speed switching applications. Selection of this substitute is appropriate only when PCB redesign is feasible and performance improvements justify the engineering effort.

Frequently Asked Questions (FAQ)

Q: Can the MAX4515EPA+ be used as a direct drop-in replacement for the TS12A4515P?

A: Yes, the MAX4515EPA+ maintains identical 8-DIP through-hole packaging and pinout compatibility. No PCB modifications are required. However, the 20Ω on-state resistance versus the original 10Ω must be evaluated in circuit simulations to confirm acceptable signal integrity and power dissipation margins.

Q: What is the primary limitation of the TMUX6202RQXR as a substitute?

A: The TMUX6202RQXR uses surface-mount 8-WFDFN packaging instead of through-hole 8-DIP. This requires PCB redesign, new footprint layout, and potential changes to assembly processes. Additionally, switch timing is slower, which may not be suitable for applications requiring the original 75ns/45ns switching speed.

Q: Are both substitute parts ROHS3 compliant?

A: Yes, both the MAX4515EPA+ and TMUX6202RQXR are ROHS3 compliant, matching the original TS12A4515P compliance status.

Q: Why is the TS12A4515P in Last Time Buy status?

A: Last Time Buy status indicates Texas Instruments has discontinued production. Existing inventory is available for final orders, but long-term supply cannot be guaranteed. Transitioning to an active substitute part ensures design sustainability.

Q: Which substitute should I select for a cost-sensitive application?

A: The MAX4515EPA+ is the cost-effective choice, as it requires no design changes and maintains compatibility with existing PCB layouts and assembly processes. The TMUX6202RQXR incurs additional engineering and manufacturing costs due to PCB redesign requirements.

Q: Does the extended temperature range of the TMUX6202RQXR (-40°C to 125°C) provide an advantage?

A: The extended range is beneficial only for applications operating above 85°C. For designs constrained to -40°C to 85°C, this feature provides no functional advantage and does not justify the packaging and redesign complexity.