TS7441L RF Switch IC Equivalent & Substitute Parts

Part Overview

The TS7441L is an RF switch integrated circuit manufactured by Tagore Technology, designed for cellular and LTE applications. It features a single-pole four-throw (SP4T) topology with 50-ohm impedance and operates across a frequency range of 1MHz to 2.7GHz. The device is housed in a 32-QFN (4x4) surface-mount package with an exposed pad.

The TS7441L carries a "Not For New Designs" product status, indicating that Tagore Technology has discontinued active development and support for this component. This status necessitates identification of equivalent substitute parts for ongoing production requirements, maintenance applications, and design continuity where the original specification remains valid.

Substiute Parts

TS7441L

Tagore TechnologyIn Stock: 1297TS7441L Datasheet

Current PartRFQ

TS8441L

Tagore TechnologyIn Stock: 1048TS8441L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TS7441L is determined by strict alignment of the following critical parameters:

Mandatory Compatibility Parameters:

• Circuit topology: SP4T configuration
• Package type: 32-QFN (4x4) with exposed pad
• Impedance: 50 Ohm
• RF application class: Cellular and LTE
• Mounting type: Surface mount
• Operating temperature range: -40°C to 85°C minimum
• Supply voltage overlap: Minimum 2.6V support required

Performance Parameters Defining Substitution Scope:

• Frequency range coverage of the original operating band (1MHz ~ 2.7GHz)
• Isolation and insertion loss characteristics
• Linearity specifications (P1dB and IIP3)

The TS8441L qualifies as a substitute part because it maintains identical package geometry, circuit topology, impedance, and thermal operating range. Both devices are manufactured by Tagore Technology and share the same RF application classification. The TS8441L extends the frequency range to 4GHz and maintains IIP3 performance at 70dBm, though with reduced isolation (20dB versus 36dB) and increased insertion loss (1dB versus 0.40dB).

Parameter Comparison

Engineering Selection Recommendations

TS8441L Substitution Basis:

The TS8441L is the qualified substitute for the TS7441L based on the following engineering criteria:

1. Product Status Alignment: The TS8441L maintains Active product status, ensuring continued manufacturer support, availability, and compliance updates. The TS7441L's "Not For New Designs" designation creates supply chain risk and limits access to technical support.

2. Regulatory Compliance: Both devices maintain ROHS3 compliance and identical moisture sensitivity ratings (MSL 1 - Unlimited), ensuring equivalent environmental qualification and handling requirements.

3. Package and Mounting Compatibility: Identical 32-QFN (4x4) package geometry with exposed pad and surface-mount configuration enables direct PCB layout compatibility without redesign.

4. Electrical Interface Compatibility: Both devices operate within overlapping supply voltage ranges (2.6V minimum) and identical temperature operating windows (-40°C to 85°C), supporting equivalent system integration.

5. RF Performance Trade-offs: The TS8441L provides extended frequency coverage (4GHz upper limit) with maintained IIP3 performance (70dBm). Applications operating within the 1MHz to 2.7GHz band will experience increased insertion loss (1dB versus 0.40dB) and reduced isolation (20dB versus 36dB). These performance differences require circuit-level evaluation based on specific application requirements.

Frequently Asked Questions (FAQ)

Q: Can the TS8441L be used as a direct replacement for the TS7441L without PCB modifications?

A: Yes, the TS8441L is pin-compatible and package-compatible with the TS7441L. Both devices use the 32-QFN (4x4) package with identical pinout and exposed pad configuration. No PCB layout changes are required for physical substitution.

Q: What are the key performance differences between TS7441L and TS8441L?

A: The TS8441L provides extended frequency range coverage (4GHz versus 2.7GHz) but with trade-offs in isolation (20dB versus 36dB) and insertion loss (1dB versus 0.40dB). Both devices maintain identical IIP3 performance at 70dBm and operate across the same temperature range.

Q: Are there supply voltage compatibility concerns when substituting TS8441L for TS7441L?

A: Both devices support 2.6V minimum supply voltage. The TS7441L supports up to 5.5V while the TS8441L supports up to 5.25V. For applications operating at 5.5V, the TS8441L maximum rating is 5.25V, which may require circuit verification depending on system tolerance specifications.

Q: Does the TS8441L maintain the same regulatory compliance as the TS7441L?

A: Yes, both devices are ROHS3 compliant with identical moisture sensitivity levels (MSL 1 - Unlimited). Both carry ECCN EAR99 classification and HTSUS code 8542.39.0001, ensuring equivalent regulatory and export compliance.

Q: What is the impact of increased insertion loss in the TS8441L on system performance?

A: The TS8441L insertion loss of 1dB represents a 0.60dB increase compared to the TS7441L at 0.40dB. This parameter affects signal attenuation through the switch and requires evaluation in the context of system noise figure, gain budget, and link margin calculations specific to the application.

Q: Is the TS8441L suitable for applications requiring the full 1MHz to 2.7GHz frequency range of the TS7441L?

A: The TS8441L frequency range of 30MHz to 4GHz covers the 1MHz to 2.7GHz band with the exception of the 1MHz to 30MHz region. Applications requiring operation below 30MHz cannot use the TS8441L as a substitute.