LMS202ECM/NOPB Equivalent & Substitute Parts

Part Overview

The LMS202ECM/NOPB is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates within a 4.5V to 5.5V supply range with a receiver hysteresis of 600 mV and supports data rates up to 230 kbps across a 0°C to 70°C operating temperature range.

Key Parameters

Parameter	LMS202ECM/NOPB
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	600 mV
Data Rate	230 kbps
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	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the LMS202ECM/NOPB is determined by the following critical parameters:

Core Compatibility Requirements:

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

Performance Parameters (Allowable Variation):

Receiver Hysteresis: 400 mV to 650 mV
Data Rate: 120 kbps to 230 kbps
Operating Temperature: 0°C ~ 70°C or -40°C ~ 85°C (extended range acceptable)

All substitute parts listed maintain identical electrical interface specifications and physical packaging, ensuring direct functional replacement within the specified parameter ranges. Substitute parts with extended operating temperature ranges (-40°C ~ 85°C) provide enhanced environmental capability while maintaining full backward compatibility.

Parameter Comparison

Part Number	Manufacturer	Product Status	Receiver Hysteresis	Data Rate	Operating Temperature	Packaging	Inventory
LMS202ECM/NOPB	Texas Instruments	Obsolete	600 mV	230 kbps	0°C ~ 70°C	16-SOIC	1100 Pcs
TRS202EIDR	Texas Instruments	Active	500 mV	120 kbps	-40°C ~ 85°C	16-SOIC	3839 Pcs
ADM202EARNZ	Analog Devices Inc.	Active	650 mV	230 kbps	-40°C ~ 85°C	16-SOIC	7155 Pcs
ADM202EARNZ-REEL	Analog Devices Inc.	Active	650 mV	230 kbps	-40°C ~ 85°C	16-SOIC	22200 Pcs
ADM202EARNZ-REEL7	Analog Devices Inc.	Active	650 mV	230 kbps	-40°C ~ 85°C	16-SOIC	50300 Pcs
ADM202JRNZ	Analog Devices Inc.	Active	400 mV	—	0°C ~ 70°C	16-SOIC	2287 Pcs
ADM202JRNZ-REEL	Analog Devices Inc.	Active	400 mV	—	0°C ~ 70°C	16-SOIC	3408 Pcs
ADM202JRNZ-REEL7	Analog Devices Inc.	Active	400 mV	—	0°C ~ 70°C	16-SOIC	3280 Pcs
HIN202CBNZ	Renesas Electronics Corporation	Active	500 mV	120 kbps	0°C ~ 70°C	16-SOIC	1519 Pcs
HIN202CBNZ-T	Renesas Electronics Corporation	Active	500 mV	120 kbps	0°C ~ 70°C	16-SOIC	4160 Pcs
HIN202ECBNZ	Renesas Electronics Corporation	Active	500 mV	230 kbps	0°C ~ 70°C	16-SOIC	4442 Pcs

Engineering Selection Recommendations

All listed substitute parts are active products with ROHS3 compliance and REACH unaffected status, providing long-term design support and regulatory alignment. Selection should prioritize active product status over the obsolete LMS202ECM/NOPB.

For applications requiring identical performance specifications (230 kbps data rate, 600 mV receiver hysteresis, 0°C ~ 70°C operating range), the ADM202EARNZ series from Analog Devices Inc. provides direct functional equivalence with extended temperature capability (-40°C ~ 85°C). The ADM202EARNZ-REEL7 variant offers the highest inventory availability at 50,300 units.

For applications operating within 0°C ~ 70°C temperature limits with 230 kbps data rate requirements, the HIN202ECBNZ from Renesas Electronics Corporation provides equivalent performance with 4,442 units in stock.

For applications tolerant of reduced data rates (120 kbps), the TRS202EIDR from Texas Instruments and HIN202CBNZ/HIN202CBNZ-T from Renesas Electronics Corporation offer extended operating temperature ranges (-40°C ~ 85°C and 0°C ~ 70°C respectively) with active product status.

Frequently Asked Questions (FAQ)

Q: Can the LMS202ECM/NOPB be directly replaced with any of these substitute parts?

A: Yes. All listed substitute parts maintain identical RS232 protocol, 2/2 driver/receiver configuration, full-duplex operation, 4.5V ~ 5.5V supply voltage, and 16-SOIC package specifications. Electrical interface compatibility is guaranteed within the specified parameter ranges.

Q: What is the difference between ADM202EARNZ, ADM202EARNZ-REEL, and ADM202EARNZ-REEL7?

A: These parts are electrically identical with identical performance specifications (650 mV receiver hysteresis, 230 kbps data rate, -40°C ~ 85°C operating range). The differences are in packaging format: ADM202EARNZ is supplied in Tube packaging, while ADM202EARNZ-REEL and ADM202EARNZ-REEL7 are supplied in Cut Tape with Digi-Reel format. ADM202EARNZ-REEL7 has significantly higher inventory availability (50,300 units).

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

A: Receiver hysteresis variation (400 mV to 650 mV) falls within the allowable substitution range for RS232 transceivers. All values within this range maintain RS232 protocol compliance and ensure reliable signal detection. The original LMS202ECM/NOPB operates at 600 mV; substitutes with 400 mV to 650 mV hysteresis are functionally equivalent.

Q: What is the significance of the extended operating temperature range (-40°C ~ 85°C) in some substitute parts?

A: Extended temperature range indicates enhanced environmental capability. Parts rated for -40°C ~ 85°C can operate in more demanding thermal conditions than the original 0°C ~ 70°C specification. These parts are fully backward compatible with applications designed for 0°C ~ 70°C operation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, ensuring regulatory alignment with current environmental standards.

Q: Which substitute part offers the best inventory availability?

A: ADM202EARNZ-REEL7 from Analog Devices Inc. offers the highest inventory availability at 50,300 units, combined with active product status and full performance equivalence to the original LMS202ECM/NOPB.

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