MAX208IDW Equivalent & Substitute Parts

Part Overview

The MAX208IDW is a 4/4 full-duplex RS232 transceiver manufactured by Texas Instruments in 24-SOIC surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The MAX208IDW operates across the industrial temperature range of -40°C to 85°C with a 4.5V to 5.5V supply voltage and supports data rates up to 120 kbps with 500 mV receiver hysteresis.

Key Parameters

Parameter	MAX208IDW
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	4/4
Duplex	Full
Package / Case	24-SOIC (0.295", 7.50mm Width)
Receiver Hysteresis	500 mV
Data Rate	120 kbps
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the MAX208IDW is determined by strict equivalence across the following critical parameters:

RS232 protocol compliance
4/4 driver/receiver configuration
Full-duplex operation
24-SOIC package footprint (0.295", 7.50mm Width)
Surface mount mounting type
4.5V to 5.5V supply voltage range
-40°C to 85°C operating temperature range
500 mV receiver hysteresis
120 kbps data rate capability
ROHS3 compliance
MSL 1 rating

Substitute parts are grouped into two categories: direct equivalents that maintain all electrical and mechanical specifications, and functional equivalents that operate within the same parameter envelope but may have enhanced specifications (higher data rates, different hysteresis values, or narrower temperature ranges).

Parameter Comparison

Part Number	Manufacturer	Package	Drivers/Receivers	Data Rate	Receiver Hysteresis	Operating Temperature	Product Status	MSL
MAX208IDW	Texas Instruments	24-SOIC	4/4	120 kbps	500 mV	-40°C ~ 85°C	Obsolete	1
MAX208EEWG+T	Analog Devices Inc./Maxim Integrated	24-SOIC	4/4	120 kbps	500 mV	-40°C ~ 85°C	Active	1
MAX208ECWG+	Analog Devices Inc./Maxim Integrated	24-SOIC	4/4	120 kbps	500 mV	0°C ~ 70°C	Active	1
MAX208CWG+	Analog Devices Inc./Maxim Integrated	24-SOIC	4/4	120 kbps	500 mV	0°C ~ 70°C	Active	1
ADM208ARZ	Analog Devices Inc.	24-SOIC	4/4	120 kbps	650 mV	-40°C ~ 85°C	Active	1
ADM208ARZ-REEL	Analog Devices Inc.	24-SOIC	4/4	120 kbps	650 mV	-40°C ~ 85°C	Active	1
ADM208EARZ	Analog Devices Inc.	24-SOIC	4/4	230 kbps	650 mV	-40°C ~ 85°C	Active	1
ADM208EARZ-REEL	Analog Devices Inc.	24-SOIC	4/4	230 kbps	650 mV	-40°C ~ 85°C	Active	1
HIN208ECBZ	Renesas Electronics Corporation	24-SOIC	4/4	230 kbps	500 mV	0°C ~ 70°C	Active	3
HIN208ECBZ-T	Renesas Electronics Corporation	24-SOIC	4/4	230 kbps	500 mV	0°C ~ 70°C	Active	3
TRS208IDBR	Texas Instruments	24-SSOP	4/4	120 kbps	500 mV	-40°C ~ 85°C	Active	1

Engineering Selection Recommendations

Direct Equivalents (Recommended for Pin-Compatible Replacement)

MAX208EEWG+T is the primary direct equivalent. It maintains identical electrical specifications to the MAX208IDW across all critical parameters including 120 kbps data rate, 500 mV receiver hysteresis, -40°C to 85°C operating range, and 24-SOIC packaging. The part is active in production with ROHS3 compliance and MSL 1 rating. This part is supplied in Tape & Reel packaging.

Temperature-Constrained Equivalents

MAX208ECWG+ and MAX208CWG+ are functionally equivalent but operate within a narrower temperature range of 0°C to 70°C. These parts are suitable for applications that do not require the full industrial temperature range. Both are active products with ROHS3 compliance and MSL 1 rating.

Enhanced Data Rate Alternatives

ADM208EARZ and ADM208EARZ-REEL support higher data rates of 230 kbps while maintaining the -40°C to 85°C operating range. These parts feature 650 mV receiver hysteresis, which differs from the MAX208IDW specification. Both are active products with ROHS3 compliance and MSL 1 rating.

Package Variant

TRS208IDBR is a Texas Instruments equivalent supplied in 24-SSOP packaging instead of 24-SOIC. This part maintains all electrical specifications of the MAX208IDW but requires PCB layout modification due to the different package footprint. It is active in production with ROHS3 compliance and MSL 1 rating.

Moisture Sensitivity Consideration

HIN208ECBZ and HIN208ECBZ-T are Renesas alternatives with MSL 3 rating (168 hours), which differs from the MAX208IDW MSL 1 rating. These parts operate within 0°C to 70°C temperature range and support 230 kbps data rates. MSL 3 classification requires stricter moisture control during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can MAX208EEWG+T be used as a direct replacement for MAX208IDW?

A: Yes. MAX208EEWG+T maintains identical electrical and mechanical specifications including 4/4 driver/receiver configuration, 24-SOIC packaging, 120 kbps data rate, 500 mV receiver hysteresis, -40°C to 85°C operating temperature, and ROHS3 compliance. No circuit modifications are required.

Q: What is the difference between ADM208ARZ and ADM208EARZ?

A: Both parts are Analog Devices RS232 transceivers in 24-SOIC packaging with 4/4 configuration and 650 mV receiver hysteresis. The primary difference is data rate: ADM208ARZ supports 120 kbps while ADM208EARZ supports 230 kbps. Both operate across -40°C to 85°C.

Q: Why does TRS208IDBR have a different package designation?

A: TRS208IDBR is supplied in 24-SSOP (0.209", 5.30mm Width) packaging, which is physically smaller than the 24-SOIC (0.295", 7.50mm Width) package of the MAX208IDW. While electrically equivalent, this package change requires PCB layout redesign and cannot be used as a direct pin-compatible replacement.

Q: Are there any compliance differences between substitute parts?

A: All substitute parts listed are ROHS3 compliant. However, HIN208ECBZ and HIN208ECBZ-T have MSL 3 rating (168 hours) compared to MSL 1 (unlimited) for other parts. MSL 3 classification requires moisture control during storage and handling per IPC-A-610 standards.

Q: Can MAX208ECWG+ be used in applications requiring -40°C operation?

A: No. MAX208ECWG+ operates within 0°C to 70°C temperature range and is not suitable for applications requiring -40°C minimum operating temperature. Use MAX208EEWG+T or ADM208ARZ/ADM208EARZ variants for full industrial temperature range support.

Q: What is the advantage of ADM208EARZ over MAX208EEWG+T?

A: ADM208EARZ supports higher data rates of 230 kbps compared to 120 kbps for MAX208EEWG+T. Both maintain -40°C to 85°C operating range and 24-SOIC packaging. The higher data rate capability of ADM208EARZ provides additional performance margin for communication-intensive applications.

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