TRS208CDWR Equivalent & Substitute Parts

Part Overview

The TRS208CDWR is a 4/4 full-duplex RS232 transceiver manufactured by Texas Instruments, housed in a 24-SOIC package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The TRS208CDWR operates within a 4.5V to 5.5V supply range with a 120 kbps data rate and 500 mV receiver hysteresis, designed for surface mount applications requiring RS232 serial communication interfaces.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRS208CDWR
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	4/4
Duplex	Full
Receiver Hysteresis	500 mV
Data Rate	120 kbps
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	24-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 TRS208CDWR is determined by the following critical parameters:

Protocol: RS232
Number of Drivers/Receivers: 4/4
Duplex: Full
Voltage Supply Range: 4.5V ~ 5.5V
Package Type: 24-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount
RoHS Compliance: ROHS3 Compliant

Substitute parts are grouped into three categories based on their relationship to the main part:

MFR Recommended Substitutes maintain identical electrical specifications and package form factor while offering active product status or improved operating temperature ranges. These include TRS208IDBR (24-SSOP package variant), ADM208ARZ, ADM208ARZ-REEL, ADM208EARZ, and ADM208EARZ-REEL.

Parametric Equivalents share identical electrical characteristics and package specifications but may differ in manufacturer or product status. MAX208CDWR is a parametric equivalent in the same 24-SOIC package.

Direct Substitutes maintain full electrical and mechanical compatibility with identical package specifications. These include MAX208ECWG+, MAX208EEWG+T, and HIN208ECBZ variants.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Receiver Hysteresis	Operating Temp	Package	Product Status
TRS208CDWR	Texas Instruments	RS232	4/4	120 kbps	500 mV	0°C ~ 70°C	24-SOIC	Obsolete
TRS208IDBR	Texas Instruments	RS232	4/4	120 kbps	500 mV	-40°C ~ 85°C	24-SSOP	Active
MAX208CDWR	Texas Instruments	RS232	4/4	120 kbps	500 mV	0°C ~ 70°C	24-SOIC	Obsolete
MAX208ECWG+	Analog Devices Inc./Maxim Integrated	RS232	4/4	120 kbps	500 mV	0°C ~ 70°C	24-SOIC	Active
MAX208EEWG+T	Analog Devices Inc./Maxim Integrated	RS232	4/4	120 kbps	500 mV	-40°C ~ 85°C	24-SOIC	Active
ADM208ARZ	Analog Devices Inc.	RS232	4/4	120 kbps	650 mV	-40°C ~ 85°C	24-SOIC	Active
ADM208ARZ-REEL	Analog Devices Inc.	RS232	4/4	120 kbps	650 mV	-40°C ~ 85°C	24-SOIC	Active
ADM208EARZ	Analog Devices Inc.	RS232	4/4	230 kbps	650 mV	-40°C ~ 85°C	24-SOIC	Active
ADM208EARZ-REEL	Analog Devices Inc.	RS232	4/4	230 kbps	650 mV	-40°C ~ 85°C	24-SOIC	Active
HIN208ECBZ	Renesas Electronics Corporation	RS232	4/4	230 kbps	500 mV	0°C ~ 70°C	24-SOIC	Active
HIN208ECBZ-T	Renesas Electronics Corporation	RS232	4/4	230 kbps	500 mV	0°C ~ 70°C	24-SOIC	Active

Engineering Selection Recommendations

For applications requiring direct pin-compatible replacement in the 24-SOIC package with identical operating temperature range (0°C ~ 70°C), MAX208ECWG+ provides an active product status alternative while maintaining all electrical specifications of the TRS208CDWR.

For designs requiring extended operating temperature range (-40°C ~ 85°C) with 24-SOIC package compatibility, MAX208EEWG+T, ADM208ARZ, ADM208ARZ-REEL, ADM208EARZ, and ADM208EARZ-REEL are suitable selections. ADM208EARZ and ADM208EARZ-REEL offer increased data rate capability (230 kbps) while maintaining full RS232 4/4 transceiver functionality.

For applications where package form factor flexibility exists, TRS208IDBR offers active product status with extended temperature range in a 24-SSOP package, reducing board space requirements compared to the 24-SOIC footprint.

HIN208ECBZ and HIN208ECBZ-T from Renesas Electronics provide active product status alternatives with 230 kbps data rate capability while maintaining the original 0°C ~ 70°C operating temperature specification and 24-SOIC package form factor.

All substitute parts listed maintain ROHS3 compliance and MSL ratings compatible with standard manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can MAX208EEWG+T replace TRS208CDWR in all applications?

A: MAX208EEWG+T is electrically compatible with identical 4/4 RS232 transceiver configuration, 120 kbps data rate, and 24-SOIC package. The primary difference is extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C). Compatibility depends on your application's temperature requirements.

Q: What is the difference between ADM208ARZ and ADM208EARZ?

A: Both are Analog Devices RS232 4/4 transceivers in 24-SOIC packages with -40°C ~ 85°C operating range. ADM208EARZ supports 230 kbps data rate compared to ADM208ARZ at 120 kbps. Both feature 650 mV receiver hysteresis.

Q: Why does TRS208IDBR use a different package (24-SSOP) than the original TRS208CDWR (24-SOIC)?

A: TRS208IDBR is the active product variant from Texas Instruments offering the same electrical specifications with extended temperature range. The 24-SSOP package is narrower (5.30mm versus 7.50mm width), reducing PCB footprint. Pin configuration remains compatible for functional replacement.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed are ROHS3 compliant. Moisture sensitivity levels vary: TRS208CDWR and all substitute parts maintain MSL 1 (Unlimited) or MSL 3 (168 Hours), suitable for standard manufacturing and storage conditions.

Q: Can I use HIN208ECBZ if my design operates at temperatures above 70°C?

A: No. HIN208ECBZ operates within 0°C ~ 70°C temperature range, matching the original TRS208CDWR specification. For extended temperature operation, select MAX208EEWG+T, ADM208ARZ, ADM208ARZ-REEL, ADM208EARZ, or ADM208EARZ-REEL, all rated to -40°C ~ 85°C.

Q: What is the significance of the "+T" suffix in MAX208EEWG+T?

A: The "+T" suffix indicates Tape & Reel packaging format. MAX208ECWG+ uses Tube packaging. Both are electrically identical; packaging selection depends on procurement and assembly requirements.

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