TRS232D RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS232D is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in a 16-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The TRS232D operates within a 4.5V to 5.5V supply range with a 120 kbps data rate and 500 mV receiver hysteresis, serving as a standard interface component for RS232 serial communication applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRS232D
Manufacturer	Texas Instruments
Product Status	Obsolete
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	500 mV
Data Rate	120 kbps
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the TRS232D 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-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Voltage - Supply: 4.5V ~ 5.5V (minimum requirement)
RoHS Status: ROHS3 Compliant

Allowable Variations:

Data Rate: Equal to or greater than 120 kbps
Receiver Hysteresis: 300 mV to 500 mV
Operating Temperature: May extend beyond 0°C ~ 70°C
Moisture Sensitivity Level: May differ (1, 3, or higher acceptable)
Product Status: Active parts preferred for availability; obsolete parts acceptable if parameters match

Substitute parts are grouped into two categories: manufacturer-recommended active alternatives and parametric equivalents that maintain full electrical and mechanical compatibility.

Parameter Comparison

Part Number	Manufacturer	Product Status	Data Rate	Receiver Hysteresis	Operating Temperature	Voltage - Supply	MSL	Packaging
TRS232D	Texas Instruments	Obsolete	120 kbps	500 mV	0°C ~ 70°C	4.5V ~ 5.5V	1	Tube
MAX232DR	Texas Instruments	Active	120 kbps	500 mV	0°C ~ 70°C	4.5V ~ 5.5V	1	Cut Tape (CT) & Digi-Reel®
MAX232CSE+T	Analog Devices Inc./Maxim Integrated	Active	120 kbps	500 mV	0°C ~ 70°C	4.5V ~ 5.5V	1	Cut Tape (CT) & Digi-Reel®
MAX202CD	Texas Instruments	Obsolete	120 kbps	500 mV	0°C ~ 70°C	4.5V ~ 5.5V	1	Tube
MAX232DG4	Texas Instruments	Obsolete	120 kbps	500 mV	0°C ~ 70°C	4.5V ~ 5.5V	1	Tube
TRS202ECD	Texas Instruments	Obsolete	120 kbps	500 mV	0°C ~ 70°C	4.5V ~ 5.5V	1	Tube
HIN232ACBNZ	Renesas Electronics Corporation	Active	230 kbps	500 mV	0°C ~ 70°C	4.5V ~ 5.5V	3	Tube
HIN232ACBNZ-T	Renesas Electronics Corporation	Active	230 kbps	500 mV	0°C ~ 70°C	4.5V ~ 5.5V	3	Cut Tape (CT) & Digi-Reel®
HIN232EIBNZ	Renesas Electronics Corporation	Active	230 kbps	500 mV	-40°C ~ 85°C	4.5V ~ 5.5V	3	Tube
HIN232EIBNZ-T	Renesas Electronics Corporation	Active	230 kbps	500 mV	-40°C ~ 85°C	4.5V ~ 5.5V	3	Cut Tape (CT) & Digi-Reel®
ICL3232IBNZ-T7A	Renesas Electronics Corporation	Active	250 kbps	300 mV	-40°C ~ 85°C	3V ~ 5.5V	3	Tape & Reel (TR)

Engineering Selection Recommendations

Primary Recommendation - Active Status: MAX232DR (Texas Instruments) and MAX232CSE+T (Analog Devices Inc./Maxim Integrated) are the preferred substitutes. Both are active products with identical electrical specifications to the TRS232D, including 120 kbps data rate, 500 mV receiver hysteresis, and 4.5V to 5.5V supply voltage. Both maintain ROHS3 compliance and MSL 1 rating. MAX232DR is available in Cut Tape & Digi-Reel® packaging, while MAX232CSE+T offers the same packaging format with higher inventory availability.

Secondary Recommendation - Extended Performance: HIN232ACBNZ and HIN232ACBNZ-T (Renesas Electronics Corporation) provide active product status with enhanced data rate capability (230 kbps versus 120 kbps). These parts maintain full electrical compatibility within the 4.5V to 5.5V supply range and 500 mV receiver hysteresis. MSL rating is 3 (168 Hours) rather than 1. HIN232ACBNZ-T offers Cut Tape & Digi-Reel® packaging for production environments.

Extended Temperature Range Option: HIN232EIBNZ and HIN232EIBNZ-T extend operating temperature to -40°C to 85°C, suitable for industrial and automotive applications. Data rate is 230 kbps with 500 mV receiver hysteresis. Both are active products with ROHS3 compliance.

Wide Supply Voltage Option: ICL3232IBNZ-T7A (Renesas Electronics Corporation) accepts supply voltage from 3V to 5.5V, enabling operation in lower-voltage systems. Data rate is 250 kbps with 300 mV receiver hysteresis. Operating temperature extends to -40°C to 85°C. This part is active and ROHS3 compliant.

Parametric Equivalents - Obsolete Status: MAX202CD, MAX232DG4, and TRS202ECD are parametric equivalents with identical electrical specifications to TRS232D but carry obsolete product status. These parts are suitable only when active alternatives are unavailable and existing inventory is accessible.

Frequently Asked Questions (FAQ)

Q: Can MAX232DR directly replace TRS232D in existing designs? A: Yes. MAX232DR matches all critical parameters: 2/2 full-duplex RS232 transceiver, 120 kbps data rate, 500 mV receiver hysteresis, 4.5V to 5.5V supply voltage, 16-SOIC package, and ROHS3 compliance. Pin configuration and electrical behavior are identical.

Q: What is the difference between HIN232ACBNZ and HIN232EIBNZ? A: Both are Renesas RS232 transceivers with 230 kbps data rate and 500 mV receiver hysteresis. HIN232EIBNZ extends operating temperature to -40°C to 85°C, compared to 0°C to 70°C for HIN232ACBNZ. HIN232EIBNZ is suitable for industrial and automotive applications requiring wider temperature range.

Q: Why does ICL3232IBNZ-T7A have different receiver hysteresis (300 mV)? A: ICL3232IBNZ-T7A is a parametric equivalent with 300 mV receiver hysteresis instead of 500 mV. This lower hysteresis value is within acceptable substitution parameters and does not affect RS232 protocol compliance. The part also supports lower supply voltage (3V minimum) and higher data rate (250 kbps).

Q: What packaging options are available for active substitutes? A: MAX232DR and MAX232CSE+T are available in Cut Tape (CT) & Digi-Reel® packaging. HIN232ACBNZ-T, HIN232EIBNZ-T, and ICL3232IBNZ-T7A offer Tape & Reel (TR) or equivalent production packaging. Original TRS232D was supplied in Tube packaging; tube packaging is available for obsolete parametric equivalents only.

Q: Is MSL rating important for substitution? A: MSL rating indicates moisture sensitivity during storage and handling. TRS232D has MSL 1 (Unlimited). Renesas alternatives have MSL 3 (168 Hours), requiring controlled storage conditions. This difference does not affect electrical performance but impacts supply chain handling procedures.

Q: Can I use HIN232EIBNZ-T in a 0°C to 70°C application? A: Yes. HIN232EIBNZ-T is rated for -40°C to 85°C, which encompasses the 0°C to 70°C range. Extended temperature rating provides additional design margin without compromising performance in standard temperature applications.

Q: What is the inventory status of active substitutes? A: MAX232DR has 305,300 units in stock. MAX232CSE+T has 64,960 units. HIN232ACBNZ-T has 8,899 units. HIN232EIBNZ-T has 6,597 units. ICL3232IBNZ-T7A has 1,045 units. All are classified as active products with ongoing manufacturer support.

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