LMS202ECMX Equivalent & Substitute Parts

Part Overview

The LMS202ECMX is a 2/2 transceiver full RS232 interface IC manufactured by Texas Instruments in 16-SOIC surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. The LMS202ECMX operates within the 4.5V to 5.5V supply voltage range and supports data rates up to 230kbps with full-duplex RS232 communication.

Key Parameters

Parameter	LMS202ECMX
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	230kbps
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the LMS202ECMX is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Voltage - Supply: 4.5V ~ 5.5V
Mounting Type: Surface Mount
Package / Case: 16-SOIC (0.154", 3.90mm Width)

Allowable Variation Parameters:

Receiver Hysteresis: 400 mV to 650 mV
Data Rate: 120kbps to 230kbps
Operating Temperature: 0°C ~ 70°C or -40°C ~ 85°C
Product Status: Active (preferred over obsolete)
RoHS Status: ROHS3 Compliant (preferred)

All substitute parts listed maintain the core RS232 2/2 transceiver functionality in identical 16-SOIC packaging with compatible supply voltage specifications.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Receiver Hysteresis	Operating Temp	Product Status	RoHS Status	Packaging
LMS202ECMX	Texas Instruments	RS232	2/2	230kbps	600 mV	0°C ~ 70°C	Obsolete	RoHS non-compliant	Tube
ADM202EARNZ	Analog Devices Inc.	RS232	2/2	230kbps	650 mV	-40°C ~ 85°C	Active	ROHS3 Compliant	Tube
ADM202EARNZ-REEL	Analog Devices Inc.	RS232	2/2	230kbps	650 mV	-40°C ~ 85°C	Active	ROHS3 Compliant	Cut Tape & Digi-Reel
ADM202EARNZ-REEL7	Analog Devices Inc.	RS232	2/2	230kbps	650 mV	-40°C ~ 85°C	Active	ROHS3 Compliant	Cut Tape & Digi-Reel
ADM202JRNZ	Analog Devices Inc.	RS232	2/2	Not specified	400 mV	0°C ~ 70°C	Active	ROHS3 Compliant	Tube
ADM202JRNZ-REEL	Analog Devices Inc.	RS232	2/2	Not specified	400 mV	0°C ~ 70°C	Active	ROHS3 Compliant	Cut Tape & Digi-Reel
ADM202JRNZ-REEL7	Analog Devices Inc.	RS232	2/2	Not specified	400 mV	0°C ~ 70°C	Active	ROHS3 Compliant	Cut Tape & Digi-Reel
HIN202CBNZ	Renesas Electronics Corporation	RS232	2/2	120kbps	500 mV	0°C ~ 70°C	Active	ROHS3 Compliant	Tube
HIN202CBNZ-T	Renesas Electronics Corporation	RS232	2/2	120kbps	500 mV	0°C ~ 70°C	Active	ROHS3 Compliant	Cut Tape & Digi-Reel
HIN202ECBNZ	Renesas Electronics Corporation	RS232	2/2	230kbps	500 mV	0°C ~ 70°C	Active	ROHS3 Compliant	Tube
HIN202ECBNZ-T	Renesas Electronics Corporation	RS232	2/2	230kbps	500 mV	0°C ~ 70°C	Active	ROHS3 Compliant	Cut Tape & Digi-Reel

Engineering Selection Recommendations

For applications requiring direct replacement of the LMS202ECMX, the ADM202EARNZ and ADM202EARNZ-REEL variants from Analog Devices Inc. provide the closest electrical match with identical 230kbps data rate capability and matching 4.5V to 5.5V supply voltage range. These parts are active products with ROHS3 compliance and extended operating temperature range (-40°C to 85°C), offering improved reliability over the obsolete LMS202ECMX.

The HIN202ECBNZ and HIN202ECBNZ-T from Renesas Electronics Corporation are functionally equivalent alternatives supporting the same 230kbps data rate and operating temperature range as the original part, with ROHS3 compliance and active product status.

For applications with lower data rate requirements (120kbps), the HIN202CBNZ and HIN202CBNZ-T variants provide compliant alternatives with reduced bandwidth specifications.

The ADM202JRNZ variants support the original 0°C to 70°C operating temperature range with lower receiver hysteresis (400 mV) and active product status with ROHS3 compliance.

All recommended substitutes maintain identical 16-SOIC surface mount packaging and 2/2 full-duplex RS232 transceiver functionality.

Frequently Asked Questions (FAQ)

Q: Can ADM202EARNZ directly replace LMS202ECMX in existing designs?

A: Yes. The ADM202EARNZ maintains identical RS232 protocol, 2/2 transceiver configuration, full-duplex operation, 16-SOIC packaging, and 4.5V to 5.5V supply voltage. The 230kbps data rate matches the original specification. The extended operating temperature range (-40°C to 85°C) and ROHS3 compliance provide additional design benefits.

Q: What is the difference between ADM202EARNZ and ADM202EARNZ-REEL?

A: Both parts are electrically identical. The difference is packaging format: ADM202EARNZ is supplied in Tube packaging, while ADM202EARNZ-REEL is supplied in Cut Tape and Digi-Reel format for automated assembly processes.

Q: Are HIN202ECBNZ and HIN202ECBNZ-T compatible with LMS202ECMX?

A: Yes. Both Renesas parts support 230kbps data rate, 2/2 RS232 transceiver configuration, full-duplex operation, and 16-SOIC packaging with 4.5V to 5.5V supply voltage. The receiver hysteresis differs (500 mV vs. 600 mV), which remains within acceptable substitution parameters.

Q: Why do some substitute parts show different receiver hysteresis values?

A: Receiver hysteresis variation (400 mV to 650 mV) is an allowable parameter difference for RS232 transceiver substitution. All values within this range maintain RS232 protocol compliance and signal integrity for standard applications.

Q: Can ADM202JRNZ be used as a substitute if data rate is not specified?

A: ADM202JRNZ is functionally compatible with the LMS202ECMX for applications operating at 0°C to 70°C. The unspecified data rate does not indicate reduced capability; it indicates the part supports standard RS232 operation. Verify with the manufacturer datasheet for specific application requirements.

Q: What is the significance of ROHS3 compliance on substitute parts?

A: ROHS3 compliance indicates the substitute parts meet current environmental and regulatory standards, whereas the original LMS202ECMX is RoHS non-compliant. This is relevant for new designs and markets with regulatory requirements.

Q: Are all substitute parts available in both Tube and Cut Tape packaging?

A: No. Tube packaging is standard for most variants. Cut Tape and Digi-Reel packaging is available for specific part numbers (those ending in -REEL, -REEL7, or -T suffix). Select packaging based on assembly process requirements.

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