TRS232ECDWR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS232ECDWR 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 procurement. The TRS232ECDWR operates within a 4.5V to 5.5V supply voltage range with a 250kbps data rate and 500mV receiver hysteresis, designed for standard RS232 serial communication applications.

Key Parameters

Parameter	TRS232ECDWR
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	500 mV
Data Rate	250kbps
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	16-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TRS232ECDWR is determined by the following critical parameters:

Protocol: RS232 full-duplex transceiver with 2/2 driver/receiver configuration
Package: 16-SOIC surface mount form factor
Supply Voltage: 4.5V to 5.5V compatibility
Data Rate: Minimum 250kbps capability
Receiver Hysteresis: 500mV nominal specification
Operating Temperature: 0°C to 70°C range
Compliance: ROHS3 compliant, MSL 1 rating

Substitute parts are grouped into two categories: MFR Recommended Active Alternatives (preferred for new designs) and Parametric Equivalents (functionally compatible with identical or superior electrical characteristics).

Parameter Comparison

Part Number	Manufacturer	Product Status	Data Rate	Receiver Hysteresis	Operating Temperature	Packaging	Inventory
TRS232ECDWR	Texas Instruments	Obsolete	250kbps	500 mV	0°C ~ 70°C	Cut Tape (CT) & Digi-Reel®	2148 Pcs
TRS232EIDWR	Texas Instruments	Active	250kbps	500 mV	-40°C ~ 85°C	Tape & Reel (TR)	1705 Pcs
MAX232ECDWR	Texas Instruments	Obsolete	250kbps	500 mV	0°C ~ 70°C	Cut Tape (CT) & Digi-Reel®	22095 Pcs
ADM232AARWZ	Analog Devices Inc.	Active	200kbps	400 mV	-40°C ~ 85°C	Tube	5200 Pcs
ADM232AARWZ-REEL	Analog Devices Inc.	Active	200kbps	400 mV	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	3160 Pcs
ADM232LARZ	Analog Devices Inc.	Active	120Kbps	650 mV	-40°C ~ 85°C	Tube	1110 Pcs
ADM232LARZ-REEL	Analog Devices Inc.	Active	120Kbps	650 mV	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	5200 Pcs
ADM232LJRZ	Analog Devices Inc.	Active	120Kbps	650 mV	0°C ~ 70°C	Tube	24596 Pcs
ADM232LJRZ-REEL	Analog Devices Inc.	Active	120Kbps	650 mV	0°C ~ 70°C	Cut Tape (CT) & Digi-Reel®	8577 Pcs
HIN232CBZ	Renesas Electronics Corporation	Active	120Kbps	500 mV	0°C ~ 70°C	Tube	5606 Pcs
HIN232CBZ-T	Renesas Electronics Corporation	Active	120Kbps	500 mV	0°C ~ 70°C	Cut Tape (CT) & Digi-Reel®	10400 Pcs

Engineering Selection Recommendations

For applications currently using the obsolete TRS232ECDWR, the following selection criteria apply:

Active Status Priority: TRS232EIDWR is the direct active equivalent from Texas Instruments, offering extended operating temperature range (-40°C to 85°C) while maintaining identical electrical specifications. This part is recommended for new designs and ongoing production requiring Texas Instruments sourcing.

Analog Devices Alternatives: The ADM232 series (AARWZ, LARZ, LJRZ variants) provides active alternatives with ROHS3 compliance and MSL 1 ratings. ADM232AARWZ and ADM232AARWZ-REEL operate at 200kbps with extended temperature range, suitable for applications not requiring the full 250kbps data rate. ADM232LARZ and ADM232LJRZ variants operate at 120kbps and are available in both extended and standard temperature ranges.

Renesas Alternative: HIN232CBZ and HIN232CBZ-T maintain the 500mV receiver hysteresis specification matching the original part, with 120kbps data rate capability and standard temperature range operation. MSL rating is 2 (1 Year), differing from the original part's MSL 1 specification.

Parametric Equivalent: MAX232ECDWR provides identical electrical specifications to TRS232ECDWR with significantly higher inventory availability (22095 pcs), though it remains in obsolete status.

Frequently Asked Questions (FAQ)

Q: Can TRS232EIDWR directly replace TRS232ECDWR in existing designs?

A: Yes. TRS232EIDWR is the active equivalent with identical electrical specifications (250kbps, 500mV hysteresis, 4.5V-5.5V supply). The primary difference is extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and packaging format (Tape & Reel versus Cut Tape & Digi-Reel). Verify packaging requirements for your assembly process.

Q: What is the difference between ADM232AARWZ and ADM232LARZ?

A: Both are Analog Devices active alternatives with ROHS3 compliance. ADM232AARWZ operates at 200kbps with 400mV receiver hysteresis and -40°C to 85°C temperature range. ADM232LARZ operates at 120kbps with 650mV receiver hysteresis and -40°C to 85°C temperature range. Selection depends on required data rate and noise margin specifications.

Q: Why do some substitute parts have lower data rates than the original TRS232ECDWR?

A: The ADM232 and HIN232 series operate at 120kbps or 200kbps, below the original 250kbps specification. These parts remain functionally compatible for RS232 applications operating at lower baud rates. Verify your application's actual data rate requirement before selection.

Q: What is the significance of the -REEL suffix in part numbers?

A: The -REEL suffix indicates Cut Tape & Digi-Reel packaging format, suitable for automated pick-and-place assembly. Parts without this suffix are supplied in Tube packaging. Both formats contain identical die and electrical specifications; selection is based on assembly process requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance. HIN232CBZ and HIN232CBZ-T have MSL 2 (1 Year) rating, differing from the original part's MSL 1 (Unlimited) specification. Verify moisture handling requirements for your storage and assembly environment.

Q: Can MAX232ECDWR be used as a substitute despite obsolete status?

A: MAX232ECDWR is a parametric equivalent with identical electrical specifications and higher inventory availability. However, for new designs, active alternatives (TRS232EIDWR, ADM232 series, HIN232 series) are preferred to ensure long-term supply continuity and manufacturer support.

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