MAX208CDW Equivalent & Substitute Parts

Part Overview

The MAX208CDW is a 4/4 transceiver full RS232 interface IC in 24-SOIC packaging manufactured by Texas Instruments. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The MAX208CDW operates within a 4.5V to 5.5V supply range with a 120Kbps data rate and 500mV receiver hysteresis, designed for surface mount applications requiring full-duplex RS232 communication.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX208CDW
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	4/4
Duplex	Full
Receiver Hysteresis	500 mV
Data Rate	120Kbps
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	24-SOIC (0.295", 7.50mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MAX208CDW is determined by the following critical parameters:

Electrical Compatibility:

RS232 protocol with 4/4 driver/receiver configuration
Full-duplex operation
Supply voltage range: 4.5V ~ 5.5V
Data rate capability: minimum 120Kbps
Receiver hysteresis: 500mV or higher acceptable

Mechanical Compatibility:

Package type: 24-SOIC (0.295", 7.50mm Width) for direct pin-compatible replacement
Surface mount mounting type

Regulatory Compliance:

ROHS3 compliance required
REACH unaffected status

Substitute parts are grouped into three categories based on their relationship to the MAX208CDW: direct manufacturer equivalents (same package, same base specifications), manufacturer-recommended alternatives (different package or enhanced specifications), and upgrade options (extended temperature range or higher data rate capability).

Parameter Comparison

Part Number	Manufacturer	Package	Drivers/Receivers	Data Rate	Receiver Hysteresis	Operating Temp	Product Status	Inventory
MAX208CDW	Texas Instruments	24-SOIC	4/4	120Kbps	500 mV	0°C ~ 70°C	Obsolete	702 Pcs
MAX208ECWG+T	Analog Devices Inc./Maxim Integrated	24-SOIC	4/4	120Kbps	500 mV	0°C ~ 70°C	Active	1900 Pcs
MAX208EEWG+	Analog Devices Inc./Maxim Integrated	24-SOIC	4/4	120Kbps	500 mV	-40°C ~ 85°C	Active	775 Pcs
MAX208EEWG+T	Analog Devices Inc./Maxim Integrated	24-SOIC	4/4	120Kbps	500 mV	-40°C ~ 85°C	Active	2846 Pcs
ADM208ARZ	Analog Devices Inc.	24-SOIC	4/4	120Kbps	650 mV	-40°C ~ 85°C	Active	1940 Pcs
ADM208ARZ-REEL	Analog Devices Inc.	24-SOIC	4/4	120Kbps	650 mV	-40°C ~ 85°C	Active	3400 Pcs
ADM208EARZ	Analog Devices Inc.	24-SOIC	4/4	230kbps	650 mV	-40°C ~ 85°C	Active	2476 Pcs
ADM208EARZ-REEL	Analog Devices Inc.	24-SOIC	4/4	230kbps	650 mV	-40°C ~ 85°C	Active	2200 Pcs
HIN208ECBZ	Renesas Electronics Corporation	24-SOIC	4/4	230kbps	500 mV	0°C ~ 70°C	Active	2350 Pcs
HIN208ECBZ-T	Renesas Electronics Corporation	24-SOIC	4/4	230kbps	500 mV	0°C ~ 70°C	Active	898 Pcs
TRS208IDBR	Texas Instruments	24-SSOP	4/4	120Kbps	500 mV	-40°C ~ 85°C	Active	2470 Pcs

Engineering Selection Recommendations

Direct Pin-Compatible Replacement (24-SOIC Package):

MAX208ECWG+T is the primary direct equivalent, maintaining identical electrical specifications and package form factor as the MAX208CDW while offering active product status and higher inventory availability. This part is suitable for applications with identical operating temperature requirements (0°C ~ 70°C).

Extended Temperature Range Alternatives (24-SOIC Package):

MAX208EEWG+ and MAX208EEWG+T extend the operating temperature range to -40°C ~ 85°C while maintaining all other electrical parameters. These parts are appropriate for applications requiring wider temperature operation and are available in active status.

Higher Receiver Hysteresis Options (24-SOIC Package):

ADM208ARZ, ADM208ARZ-REEL, ADM208EARZ, and ADM208EARZ-REEL provide 650mV receiver hysteresis compared to the 500mV specification of the MAX208CDW. The ADM208EARZ variants offer enhanced data rate capability (230kbps) and extended temperature range (-40°C ~ 85°C). These parts are suitable when improved noise immunity is required.

Alternative Package Option (24-SSOP Package):

TRS208IDBR provides equivalent electrical functionality in a 24-SSOP package (0.209", 5.30mm Width) with extended temperature range. This option requires PCB layout modification but offers a smaller footprint and active product status.

Renesas Alternative (24-SOIC Package):

HIN208ECBZ and HIN208ECBZ-T maintain the original operating temperature range (0°C ~ 70°C) with enhanced data rate capability (230kbps) and identical receiver hysteresis (500mV). These parts are suitable for applications requiring higher data throughput within the same thermal envelope.

All substitute parts maintain ROHS3 compliance and REACH unaffected status consistent with the MAX208CDW.

Frequently Asked Questions (FAQ)

Q: Can MAX208ECWG+T be used as a direct replacement for MAX208CDW?

A: Yes. MAX208ECWG+T is pin-compatible in the 24-SOIC package and maintains identical electrical specifications including 4/4 driver/receiver configuration, 120Kbps data rate, 500mV receiver hysteresis, and 0°C ~ 70°C operating temperature range. The primary difference is active product status versus obsolete status.

Q: What is the difference between MAX208EEWG+ and MAX208EEWG+T?

A: Both parts are electrically identical with 4/4 drivers/receivers, 120Kbps data rate, and 500mV receiver hysteresis in 24-SOIC packaging. The difference is packaging format: MAX208EEWG+ is supplied in Tube packaging, while MAX208EEWG+T is supplied in Tape & Reel (TR) format. The extended temperature range (-40°C ~ 85°C) applies to both variants.

Q: Why would I select an ADM208 part over a MAX208 part?

A: ADM208 variants offer 650mV receiver hysteresis compared to 500mV in MAX208 parts, providing improved noise immunity in electrically noisy environments. ADM208EARZ and ADM208EARZ-REEL additionally provide 230kbps data rate capability and extended temperature range (-40°C ~ 85°C), suitable for higher-speed applications or wider thermal operating conditions.

Q: Is TRS208IDBR compatible with MAX208CDW?

A: TRS208IDBR is electrically compatible but requires PCB layout modification. It uses 24-SSOP packaging (0.209", 5.30mm Width) instead of 24-SOIC (0.295", 7.50mm Width), resulting in a smaller footprint. Electrical specifications are identical: 4/4 drivers/receivers, 120Kbps data rate, and 500mV receiver hysteresis. Operating temperature extends to -40°C ~ 85°C.

Q: Can HIN208ECBZ replace MAX208CDW in all applications?

A: HIN208ECBZ is pin-compatible in 24-SOIC packaging with matching operating temperature range (0°C ~ 70°C) and receiver hysteresis (500mV). The enhanced data rate capability (230kbps versus 120Kbps) is backward compatible with applications designed for 120Kbps operation. Moisture sensitivity level differs (MSL 3 versus MSL 1), which may affect storage and handling requirements.

Q: What is the significance of receiver hysteresis in RS232 transceiver selection?

A: Receiver hysteresis determines the voltage differential required for the receiver to switch logic states. Higher hysteresis (650mV in ADM208 parts versus 500mV in MAX208 parts) provides improved noise immunity in electrically noisy environments but may reduce sensitivity to weak input signals. Selection depends on signal integrity requirements of the specific application.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and REACH unaffected status consistent with the MAX208CDW, ensuring regulatory compliance for applications requiring these certifications.

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