TS5MP645YFPR Equivalent & Substitute Parts

Part Overview

The TS5MP645YFPR is a 10-circuit SPDT IC switch manufactured by Texas Instruments, designed for high-frequency signal routing applications. This device features a 2:1 multiplexer/demultiplexer configuration with 6.5Ohm on-state resistance and operates across a 1.65V to 5.5V supply range. The part is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary for ongoing system support, legacy product maintenance, and design continuity where this component is currently deployed.

Key Parameters

Parameter	Value
Manufacturer Part Number	TS5MP645YFPR
Manufacturer	Texas Instruments
Category	Interface
Switch Circuit Type	SPDT
Multiplexer/Demultiplexer Configuration	2:1
Number of Circuits	10
On-State Resistance (Max)	6.5Ohm
Channel-to-Channel Matching (ΔRon)	100mOhm
Voltage - Supply, Single (V+)	1.65V ~ 5.5V
-3dB Bandwidth	1.5GHz
Channel Capacitance (CS(off), CD(off))	1.5pF
Current - Leakage (IS(off)) (Max)	500nA
Crosstalk	-40dB @ 1.25GHz
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	36-XFBGA, DSBGA
Supplier Device Package	36-DSBGA
Product Status	Not For New Designs
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TS5MP645YFPR is determined by the following core parameters:

Switch Configuration: SPDT topology with 2:1 multiplexer/demultiplexer function
Circuit Count: 10 independent circuits
On-State Resistance: Maximum 6.5Ohm (primary electrical constraint)
Supply Voltage Range: 1.65V to 5.5V single supply operation
Frequency Performance: -3dB bandwidth of 1.5GHz minimum
Package Compatibility: 36-pin BGA footprint (DSBGA or equivalent)
Operating Temperature: -40°C to 85°C range
Surface Mount Configuration: Standard SMD assembly compatibility

The TMUX646ZECR meets the core functional requirements of SPDT 2:1 multiplexing with 10 channels and operates within the specified temperature range. However, this substitute exhibits performance characteristics that differ in specific electrical parameters, requiring engineering evaluation for application-specific compatibility.

Parameter Comparison

Parameter	TS5MP645YFPR	TMUX646ZECR	Compatibility Notes
Manufacturer	Texas Instruments	Texas Instruments	Same manufacturer
Switch Circuit Type	SPDT	SPDT	Identical topology
Multiplexer/Demultiplexer Configuration	2:1	2:1	Identical configuration
Number of Circuits/Channels	10	10	Identical channel count
On-State Resistance (Max)	6.5Ohm	9Ohm, 10Ohm	Substitute has higher resistance; verify signal integrity requirements
Voltage - Supply, Single (V+)	1.65V ~ 5.5V	1.5V ~ 5.5V	Substitute supports lower minimum voltage (1.5V vs 1.65V)
-3dB Bandwidth	1.5GHz	6GHz	Substitute provides superior bandwidth performance
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C (TA)	Identical operating range
Mounting Type	Surface Mount	Surface Mount	Identical mounting method
Package / Case	36-XFBGA, DSBGA	36-UFBGA	Different BGA variant; footprint compatibility requires verification
Product Status	Not For New Designs	Active	Substitute is in active production
RoHS Status	ROHS3 Compliant	Not applicable	Compliance status differs
Moisture Sensitivity Level (MSL)	1 (Unlimited)	2 (1 Year)	Substitute has more stringent moisture handling requirements

Engineering Selection Recommendations

The TMUX646ZECR is the manufacturer-recommended substitute for the TS5MP645YFPR. Selection between these parts should be based on the following engineering criteria:

Product Status Consideration: The TS5MP645YFPR is designated "Not For New Designs," while the TMUX646ZECR maintains "Active" status. For ongoing production and new system implementations, the TMUX646ZECR is the appropriate choice.

Compliance and Certification: The TS5MP645YFPR carries ROHS3 compliance certification. The TMUX646ZECR compliance status is listed as "Not applicable." Verify compliance requirements for your specific application and regulatory jurisdiction before selection.

Electrical Performance Trade-offs: The TMUX646ZECR exhibits higher on-state resistance (9Ohm to 10Ohm versus 6.5Ohm) but delivers superior -3dB bandwidth (6GHz versus 1.5GHz). Applications requiring low insertion loss or impedance-critical signal paths may require detailed analysis of the resistance increase. Applications operating at higher frequencies benefit from the increased bandwidth.

Package and Assembly Considerations: The TS5MP645YFPR uses 36-DSBGA packaging, while the TMUX646ZECR uses 36-NFBGA (2.45x2.45). Although both are 36-pin BGA packages, the specific ball grid array variant differs. PCB footprint compatibility must be verified before implementation.

Moisture Handling: The TS5MP645YFPR has MSL 1 (unlimited moisture sensitivity), while the TMUX646ZECR has MSL 2 (1-year shelf life limit). Storage and handling procedures must be adjusted accordingly for the substitute part.

Frequently Asked Questions (FAQ)

Q: Can the TMUX646ZECR directly replace the TS5MP645YFPR in existing designs?

A: Functional substitution is possible due to identical SPDT 2:1 topology and 10-channel configuration. However, three factors require engineering verification: (1) PCB footprint compatibility between 36-DSBGA and 36-NFBGA packages, (2) signal integrity impact from increased on-state resistance (9-10Ohm versus 6.5Ohm), and (3) compliance certification alignment with your application requirements.

Q: What is the significance of the on-state resistance difference?

A: The TMUX646ZECR exhibits 38-54% higher on-state resistance compared to the TS5MP645YFPR. In high-impedance signal paths or applications with tight insertion loss budgets, this increase may affect signal attenuation, noise figure, or power dissipation. Low-impedance applications or those with signal conditioning stages may tolerate this difference without performance degradation.

Q: Are the BGA packages physically compatible?

A: Both parts use 36-pin BGA packaging, but the TS5MP645YFPR uses DSBGA (36-XFBGA) while the TMUX646ZECR uses NFBGA (2.45x2.45). Ball pitch, array layout, and solder pad dimensions may differ. PCB footprint verification against manufacturer datasheets is mandatory before assembly.

Q: What does "Not For New Designs" mean for the TS5MP645YFPR?

A: This designation indicates the part has reached end-of-life status and Texas Instruments no longer recommends it for new product development. Existing inventory may be available for legacy system support, but long-term availability is not guaranteed. The TMUX646ZECR, with "Active" status, is the recommended path forward for sustained production.

Q: How do the supply voltage ranges compare?

A: The TS5MP645YFPR operates from 1.65V to 5.5V, while the TMUX646ZECR operates from 1.5V to 5.5V. The substitute supports a slightly lower minimum voltage, providing broader compatibility with low-voltage applications. Both support standard 3.3V and 5V logic levels.

Q: What is the impact of the bandwidth difference?

A: The TMUX646ZECR provides 6GHz -3dB bandwidth compared to 1.5GHz for the TS5MP645YFPR. This 4x bandwidth advantage enables the substitute to handle higher-frequency signals with reduced attenuation. Applications operating below 1.5GHz experience no practical bandwidth limitation from either part.

Q: How does moisture sensitivity affect component handling?

A: The TS5MP645YFPR (MSL 1) has unlimited shelf life under standard conditions. The TMUX646ZECR (MSL 2) requires controlled humidity storage and has a 1-year maximum shelf life from the date of manufacture. Moisture-sensitive handling procedures, including desiccant packaging and bake-out protocols before reflow, apply to the substitute part.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message