MTSMC-LAT3-U.R4 Equivalent & Substitute Parts

Part Overview

The MTSMC-LAT3-U.R4 is a Cellular 4G LTE CAT-3 transceiver module manufactured by Multi-Tech Systems Inc., designed for AT&T and T-Mobile network compatibility. This RF TXRX module operates across 700MHz, 850MHz, 1.7GHz, and 1.9GHz frequency bands with a U.FL connector interface and through-hole mounting configuration. The module features a 64-DIP package with 45 leads and supports USB serial communication at 10Mbps data rate.

The MTSMC-LAT3-U.R4 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain system compatibility, ensure continued supply chain availability, and support legacy device maintenance and production requirements.

Substiute Parts

MTSMC-LAT3-U.R4

Multi-Tech Systems Inc.In Stock: 865MTSMC-LAT3-U.R4 Datasheet

Current PartRFQ

MTSMC-L1G2D-U

Multi-Tech Systems Inc.In Stock: 872MTSMC-L1G2D-U Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MTSMC-LAT3-U.R4 is determined by the following critical parameters:

Mechanical Compatibility:

• Mounting type (Through Hole)
• Package configuration (64-DIP Module, 45 Leads)
• Antenna interface (U.FL connector)

Electrical Compatibility:

• Voltage supply range (3.3V ~ 5V)
• Operating temperature range (-40°C ~ 85°C)
• Serial interface capability (USB)

Functional Compatibility:

• RF family standard (Cellular)
• Frequency band coverage (minimum requirement: 700MHz, 850MHz, 1.7GHz, 1.9GHz)
• Data rate support (10Mbps)

Regulatory Compliance:

• RoHS3 compliance
• REACH status
• Moisture sensitivity level

The MTSMC-L1G2D-U qualifies as a substitute part because it maintains identical mechanical packaging, compatible electrical specifications, overlapping frequency band coverage, and equivalent regulatory compliance status. The substitute part extends frequency band support and protocol capabilities while preserving core interface and mounting characteristics.

Parameter Comparison

Engineering Selection Recommendations

For Obsolete Part Replacement:

The MTSMC-L1G2D-U is the manufacturer-recommended substitute for the MTSMC-LAT3-U.R4. Both modules share identical mechanical packaging (64-DIP Module, 45 Leads), mounting configuration (Through Hole), and antenna interface (U.FL). The substitute part maintains compatible operating temperature range (-40°C ~ 85°C) and equivalent data rate performance (10Mbps).

Voltage Supply Consideration:

The main part supports a voltage range of 3.3V ~ 5V, while the substitute part operates at 5V. Systems designed for 3.3V operation require voltage regulation or conversion circuitry when implementing the MTSMC-L1G2D-U.

Protocol and Frequency Expansion:

The substitute part extends protocol support to include GNSS and GPS functionality and provides broader frequency band coverage (700MHz, 800MHz, 850MHz, 900MHz, 1.7GHz, 1.8GHz, 1.9GHz, 2.1GHz, 2.6GHz). The original 4G LTE CAT-3 bands (700MHz, 850MHz, 1.7GHz, 1.9GHz) are fully contained within the substitute part's frequency specification.

Serial Interface Enhancement:

The substitute part adds UART interface capability in addition to USB, providing additional communication options for legacy and new system designs.

Product Status:

The MTSMC-L1G2D-U maintains active product status, ensuring ongoing availability and supply chain support compared to the obsolete MTSMC-LAT3-U.R4.

Frequently Asked Questions (FAQ)

Q: Can the MTSMC-L1G2D-U directly replace the MTSMC-LAT3-U.R4 in existing designs?

A: Direct mechanical and electrical replacement is possible due to identical package configuration (64-DIP Module, 45 Leads), through-hole mounting, and U.FL antenna interface. However, the substitute part operates at 5V supply voltage, whereas the original part supports 3.3V ~ 5V. Designs operating at 3.3V require voltage regulation circuitry.

Q: Are the frequency bands of the MTSMC-L1G2D-U compatible with AT&T and T-Mobile networks?

A: The substitute part includes all frequency bands required for AT&T and T-Mobile 4G LTE operation (700MHz, 850MHz, 1.7GHz, 1.9GHz). The extended frequency coverage (800MHz, 900MHz, 1.8GHz, 2.1GHz, 2.6GHz) provides additional network compatibility beyond the original specification.

Q: What is the impact of the additional UART interface on the MTSMC-L1G2D-U?

A: The addition of UART serial interface does not affect USB functionality. Existing USB-based designs continue to operate without modification. The UART interface provides an alternative communication path for new implementations.

Q: Does the substitute part support the same 10Mbps data rate?

A: Yes, both the MTSMC-LAT3-U.R4 and MTSMC-L1G2D-U support 10Mbps data rate performance.

Q: Are there differences in regulatory compliance between the two parts?

A: The MTSMC-LAT3-U.R4 is specified as ROHS3 Compliant and REACH Unaffected. Regulatory compliance specifications for the MTSMC-L1G2D-U are not provided in the available data. Verification of compliance status is required for applications with specific regulatory requirements.

Q: What is the operating temperature range for both modules?

A: Both the MTSMC-LAT3-U.R4 and MTSMC-L1G2D-U operate across the identical temperature range of -40°C ~ 85°C.

Q: Is antenna selection affected by the substitution?

A: Both modules use U.FL antenna connectors and do not include antennas. Existing antenna selections compatible with the original part frequency bands remain compatible with the substitute part.