MAX211CDB Equivalent & Substitute Parts Reference

Part Overview

The MAX211CDB is a full-duplex RS232 transceiver interface circuit manufactured by Texas Instruments, housed in a 28-SSOP surface mount package. This component functions as a 4/5 transceiver with full RS232 protocol support, designed for serial communication applications requiring bidirectional data transmission.

The MAX211CDB is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Key Parameters

Parameter	Value
Part Number	MAX211CDB
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Drivers/Receivers	4/5
Duplex Mode	Full
Receiver Hysteresis	500 mV
Data Rate	120 Kbps
Supply Voltage	4.5V to 5.5V
Operating Temperature	0°C to 70°C
Package Type	28-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
Part Status	Obsolete
RoHS Compliance	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MAX211CDB is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Protocol: RS232 full-duplex transceiver
Driver/Receiver Configuration: 4/5 channel architecture
Supply Voltage Range: 4.5V to 5.5V
Data Rate: 120 Kbps
Package Type: 28-SSOP surface mount
Receiver Hysteresis: 500 mV (primary specification) or 650 mV (acceptable variance for ADM211 series)
RoHS3 Compliance and MSL Level 1 rating

Substitution Categories:

Direct Equivalents (Same Base Product - MAX211 Series): Parts maintaining identical electrical specifications and operating temperature range (0°C to 70°C) with different packaging or tape/reel configurations.

Manufacturer-Recommended Upgrades (MAX211 Extended Temperature): Parts with expanded operating temperature range (-40°C to 85°C) while maintaining all other electrical parameters, enabling use in wider environmental conditions.

Cross-Manufacturer Alternatives (ADM211 Series): Analog Devices ADM211 transceiver variants with 650 mV receiver hysteresis (150 mV higher than MAX211CDB specification) but identical protocol, channel configuration, voltage range, and data rate. Available in both 28-SSOP and 28-TSSOP package options.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Duplex	Receiver Hysteresis	Data Rate	Supply Voltage	Operating Temp	Package	Status
MAX211CDB	Texas Instruments	RS232	4/5	Full	500 mV	120 Kbps	4.5V–5.5V	0°C–70°C	28-SSOP	Obsolete
MAX211IDBR	Texas Instruments	RS232	4/5	Full	500 mV	120 Kbps	4.5V–5.5V	-40°C–85°C	28-SSOP	Active
MAX211ECAI+T	Analog Devices Inc./Maxim Integrated	RS232	4/5	Full	500 mV	120 Kbps	4.5V–5.5V	0°C–70°C	28-SSOP	Active
MAX211EEAI+	Analog Devices Inc./Maxim Integrated	RS232	4/5	Full	500 mV	120 Kbps	4.5V–5.5V	-40°C–85°C	28-SSOP	Active
MAX211EEAI+T	Analog Devices Inc./Maxim Integrated	RS232	4/5	Full	500 mV	120 Kbps	4.5V–5.5V	-40°C–85°C	28-SSOP	Active
ADM211ARSZ	Analog Devices Inc.	RS232	4/5	Full	650 mV	120 Kbps	4.5V–5.5V	-40°C–85°C	28-SSOP	Active
ADM211ARSZ-REEL	Analog Devices Inc.	RS232	4/5	Full	650 mV	120 Kbps	4.5V–5.5V	-40°C–85°C	28-SSOP	Active
ADM211EARSZ	Analog Devices Inc.	RS232	4/5	Full	650 mV	120 Kbps	4.5V–5.5V	-40°C–85°C	28-SSOP	Active
ADM211EARSZ-REEL	Analog Devices Inc.	RS232	4/5	Full	650 mV	120 Kbps	4.5V–5.5V	-40°C–85°C	28-SSOP	Active
ADM211EARUZ	Analog Devices Inc.	RS232	4/5	Full	650 mV	120 Kbps	4.5V–5.5V	-40°C–85°C	28-TSSOP	Active
ADM211EARUZ-REEL	Analog Devices Inc.	RS232	4/5	Full	650 mV	120 Kbps	4.5V–5.5V	-40°C–85°C	28-TSSOP	Active

Engineering Selection Recommendations

For Direct Replacement (Same Operating Temperature Range):

MAX211ECAI+T is the direct functional equivalent to MAX211CDB, maintaining identical operating temperature specification (0°C to 70°C) and receiver hysteresis (500 mV). This part is manufactured by Analog Devices Inc./Maxim Integrated and carries Active product status with ROHS3 compliance and MSL Level 1 rating. Selection of this part requires no thermal design modifications to existing applications.

For Extended Temperature Applications:

MAX211IDBR, MAX211EEAI+, and MAX211EEAI+T extend the operating temperature range to -40°C to 85°C while maintaining all other electrical specifications. These parts are suitable for applications requiring operation in wider environmental conditions. All three variants maintain 500 mV receiver hysteresis and are ROHS3 compliant with MSL Level 1 rating.

For Cross-Manufacturer Substitution:

The ADM211 series (ADM211ARSZ, ADM211ARSZ-REEL, ADM211EARSZ, ADM211EARSZ-REEL) from Analog Devices Inc. provides full functional substitution with the following consideration: receiver hysteresis is specified at 650 mV, which is 150 mV higher than the MAX211CDB specification. This variance is within acceptable tolerance for RS232 interface applications and does not compromise signal integrity. All ADM211 variants operate across -40°C to 85°C and are ROHS3 compliant with MSL Level 1 rating.

Package Considerations:

ADM211EARUZ and ADM211EARUZ-REEL are available in 28-TSSOP package (0.173", 4.40mm width), which is physically smaller than the standard 28-SSOP package. These parts are suitable only for PCB designs that accommodate the TSSOP footprint and do not require direct pin-for-pin replacement on existing boards designed for SSOP packages.

Compliance and Supply Chain:

All substitute parts listed maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status, ensuring regulatory alignment with the original MAX211CDB specification. All substitute parts carry Active product status, ensuring long-term supply availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can MAX211IDBR be used as a direct replacement for MAX211CDB in all applications?

A: MAX211IDBR is electrically equivalent to MAX211CDB with identical receiver hysteresis (500 mV), supply voltage range (4.5V–5.5V), and data rate (120 Kbps). The primary difference is extended operating temperature range (-40°C to 85°C versus 0°C to 70°C). Direct substitution is valid for applications operating within the original 0°C to 70°C range. Applications requiring operation below 0°C or above 70°C benefit from the extended temperature capability of MAX211IDBR.

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, affecting noise immunity and signal integrity. The MAX211CDB specifies 500 mV hysteresis. ADM211 series parts specify 650 mV hysteresis, providing 150 mV additional noise margin. Both specifications are within acceptable RS232 interface tolerances and do not compromise compatibility in standard serial communication applications.

Q: Are ADM211 parts suitable replacements for MAX211CDB in existing designs?

A: ADM211 series parts (ADM211ARSZ, ADM211EARSZ variants) are functionally equivalent to MAX211CDB across all critical parameters: RS232 protocol, 4/5 driver/receiver configuration, full-duplex operation, 120 Kbps data rate, and 4.5V–5.5V supply voltage. The 650 mV receiver hysteresis is acceptable for RS232 applications. All ADM211 variants are ROHS3 compliant and carry Active product status. Direct substitution is valid without circuit modification.

Q: What is the difference between 28-SSOP and 28-TSSOP packages?

A: 28-SSOP (Shrink Small Outline Package) measures 0.209" (5.30mm) in width. 28-TSSOP (Thin Shrink Small Outline Package) measures 0.173" (4.40mm) in width. TSSOP is a physically smaller package variant. Substitution of TSSOP for SSOP requires PCB redesign to accommodate the different footprint. SSOP and TSSOP are not pin-compatible on existing boards designed for either package type.

Q: Can MAX211ECAI+T replace MAX211CDB without thermal design changes?

A: Yes. MAX211ECAI+T maintains the identical operating temperature range (0°C to 70°C) as MAX211CDB. No thermal design modifications are required. This part is a direct functional equivalent with identical receiver hysteresis (500 mV), supply voltage range, and data rate specifications.

Q: What packaging options are available for MAX211 series substitutes?

A: MAX211IDBR is supplied in Cut Tape (CT) & Digi-Reel® packaging. MAX211ECAI+T and MAX211EEAI+T are supplied in Cut Tape (CT) & Digi-Reel® packaging. MAX211EEAI+ is supplied in Tube packaging. Selection of packaging format depends on production volume requirements and assembly process specifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (MAX211IDBR, MAX211ECAI+T, MAX211EEAI+, MAX211EEAI+T, ADM211ARSZ, ADM211ARSZ-REEL, ADM211EARSZ, ADM211EARSZ-REEL, ADM211EARUZ, ADM211EARUZ-REEL) are ROHS3 compliant with MSL Level 1 rating and REACH unaffected status, matching the compliance profile of the original MAX211CDB.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message