TRS232ECN RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS232ECN is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in a 16-DIP package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs. The TRS232ECN operates within the 4.5V to 5.5V supply voltage range with a 250 kbps data rate and 500 mV receiver hysteresis, designed for through-hole mounting applications requiring RS232 serial communication.

Key Parameters

Parameter	TRS232ECN Specification
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	250 kbps
Voltage Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Receiver Hysteresis	500 mV
Package / Case	16-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the TRS232ECN 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
Package / Case: 16-DIP (0.300", 7.62mm)
Mounting Type: Through Hole
Voltage Supply: 4.5V ~ 5.5V
RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

Data Rate: Substitute parts must support minimum 120 kbps (TRS232ECN operates at 250 kbps)
Operating Temperature: Substitute parts may have extended temperature ranges (-40°C ~ 85°C) while maintaining compatibility with the original 0°C ~ 70°C specification
Receiver Hysteresis: Acceptable range 400 mV to 650 mV (TRS232ECN specifies 500 mV)

All substitute parts listed maintain full electrical and mechanical compatibility with the TRS232ECN within these defined parameters.

Parameter Comparison

Part Number	Manufacturer	Data Rate	Operating Temperature	Receiver Hysteresis	Product Status	Inventory
TRS232ECN	Texas Instruments	250 kbps	0°C ~ 70°C	500 mV	Obsolete	1535 Pcs
MAX232EIN	Texas Instruments	250 kbps	-40°C ~ 85°C	500 mV	Active	1962 Pcs
ADM232AANZ	Analog Devices Inc.	200 kbps	-40°C ~ 85°C	400 mV	Active	2432 Pcs
ADM232LANZ	Analog Devices Inc.	120 kbps	-40°C ~ 85°C	650 mV	Active	2200 Pcs
ADM232LJNZ	Analog Devices Inc.	120 kbps	0°C ~ 70°C	650 mV	Active	5140 Pcs
HIN232CPZ	Renesas Electronics Corporation	120 kbps	0°C ~ 70°C	500 mV	Active	9431 Pcs
HIN232IPZ	Renesas Electronics Corporation	120 kbps	-40°C ~ 85°C	500 mV	Active	10200 Pcs
LT1781CN#PBF	Analog Devices Inc.	250 kbps	0°C ~ 70°C	400 mV	Active	2680 Pcs
MAX232ACPE+	Analog Devices Inc./Maxim Integrated	200 kbps	0°C ~ 70°C	500 mV	Active	39726 Pcs
MAX232AEPE+	Analog Devices Inc./Maxim Integrated	200 kbps	-40°C ~ 85°C	500 mV	Active	1200 Pcs
MAX232CPE+	Analog Devices Inc./Maxim Integrated	120 kbps	0°C ~ 70°C	500 mV	Active	17304 Pcs

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

MAX232EIN is the direct equivalent from Texas Instruments with identical electrical specifications (250 kbps data rate, 500 mV receiver hysteresis) and active product status. This part provides the closest functional match with extended operating temperature range.

LT1781CN#PBF maintains the 250 kbps data rate specification and 0°C to 70°C operating temperature matching the original part, with active product status and ROHS3 compliance.

Secondary Substitutes (Compatible with Parameter Variation):

MAX232ACPE+ and MAX232AEPE+ from the MAX232 family provide 200 kbps data rate with 500 mV receiver hysteresis. MAX232ACPE+ matches the 0°C to 70°C temperature range, while MAX232AEPE+ extends to -40°C to 85°C.

HIN232CPZ and HIN232IPZ from Renesas maintain 500 mV receiver hysteresis with reduced 120 kbps data rate. HIN232CPZ operates at 0°C to 70°C, while HIN232IPZ extends to -40°C to 85°C.

ADM232 series parts from Analog Devices provide full compatibility with varying receiver hysteresis (400 mV to 650 mV) and data rates (120 kbps to 200 kbps). ADM232LJNZ matches the original temperature range, while ADM232LANZ and ADM232AANZ provide extended temperature operation.

All listed substitutes maintain ROHS3 compliance and 16-DIP through-hole package specifications.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a lower data rate than the TRS232ECN?

A: Yes. The TRS232ECN operates at 250 kbps. Substitute parts with 120 kbps or 200 kbps data rates are compatible because they support the RS232 protocol and 2/2 transceiver configuration. Lower data rates do not prevent operation at higher speeds; they indicate the maximum rated performance. System performance depends on actual communication requirements, not the part's maximum specification.

Q: What is the difference between parts with 500 mV, 400 mV, and 650 mV receiver hysteresis?

A: Receiver hysteresis affects the input threshold switching behavior. All values within the 400 mV to 650 mV range are acceptable for RS232 transceiver substitution. The TRS232ECN specifies 500 mV. Parts with 400 mV or 650 mV hysteresis maintain full RS232 protocol compliance and are electrically compatible.

Q: Are extended temperature range parts (−40°C to 85°C) suitable for applications requiring only 0°C to 70°C operation?

A: Yes. Extended temperature range parts are fully compatible with applications requiring the narrower 0°C to 70°C range. The extended specification provides additional operational margin and does not affect performance within the original temperature window.

Q: Does the 16-DIP package dimension (0.300", 7.62mm) apply to all substitute parts?

A: Yes. All listed substitute parts use the 16-DIP (0.300", 7.62mm) package with through-hole mounting. This ensures mechanical and electrical compatibility with existing PCB layouts and socket configurations.

Q: What is the significance of "Active" versus "Obsolete" product status?

A: Active parts are currently manufactured and supported by their respective manufacturers with ongoing availability. The TRS232ECN is obsolete, meaning Texas Instruments no longer manufactures it. Substitute parts with active status provide long-term supply chain reliability and manufacturer support.

Q: Can I substitute multiple different part numbers within the same design?

A: Yes. All listed substitute parts meet the same electrical and mechanical specifications for the TRS232ECN. However, maintaining a single part number per design is recommended for supply chain consistency and manufacturing traceability.

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