TRS211CDW RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS211CDW is a full-duplex RS232 transceiver manufactured by Texas Instruments, configured with 4 drivers and 4 receivers in a 28-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring RS232 interface functionality.

The TRS211CDW operates within a 4.5V to 5.5V supply voltage range with a maximum data rate of 120 kbps and receiver hysteresis of 500 mV. Its obsolete status necessitates identification of active alternative components that maintain electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRS211CDW
Manufacturer	Texas Instruments
Category	Interface
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
Mounting Type	Surface Mount
Package / Case	28-SOIC (0.295", 7.50mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the TRS211CDW is determined by strict adherence to the following electrical and mechanical parameters:

Critical Compatibility Parameters:

Protocol: RS232 (full-duplex transceiver)
Number of Drivers/Receivers: 4/4 configuration
Package / Case: 28-SOIC (0.295", 7.50mm Width)
Voltage - Supply: 4.5V ~ 5.5V
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Allowable Parameter Variations:

Data Rate: Substitute parts with equal or higher data rates (120 kbps or greater) are acceptable
Operating Temperature: Substitute parts with equal or extended temperature ranges are acceptable
Receiver Hysteresis: Variations within 500 mV to 650 mV are acceptable for RS232 interface operation
Moisture Sensitivity Level (MSL): MSL 1 or MSL 3 are both acceptable
Packaging Format: Tube or Tape & Reel (TR) formats are interchangeable

All substitute parts listed maintain identical electrical protocol, driver/receiver count, package footprint, and supply voltage specifications as the TRS211CDW.

Parameter Comparison

Part Number	Manufacturer	Product Status	Data Rate	Operating Temperature	Receiver Hysteresis	Packaging	MSL	Inventory
TRS211CDW	Texas Instruments	Obsolete	120 kbps	0°C ~ 70°C	500 mV	Tube	1	652 Pcs
MAX211CDWR	Texas Instruments	Active	120 kbps	0°C ~ 70°C	500 mV	Tape & Reel (TR)	1	4778 Pcs
HIN211EIBZ	Renesas Electronics Corporation	Active	230 kbps	-40°C ~ 85°C	500 mV	Tube	3	1511 Pcs
MAX211EEWI+	Analog Devices Inc./Maxim Integrated	Active	120 kbps	-40°C ~ 85°C	500 mV	Tube	1	1800 Pcs
MAX211EEWI+T	Analog Devices Inc./Maxim Integrated	Active	120 kbps	-40°C ~ 85°C	500 mV	Tape & Reel (TR)	1	3300 Pcs
ADM211ARZ	Analog Devices Inc.	Active	120 kbps	-40°C ~ 85°C	650 mV	Tube	1	3200 Pcs
ADM211ARZ-REEL	Analog Devices Inc.	Active	120 kbps	-40°C ~ 85°C	650 mV	Tape & Reel (TR)	1	3002 Pcs
ADM211EARZ	Analog Devices Inc.	Active	120 kbps	-40°C ~ 85°C	650 mV	Tube	1	1618 Pcs
ADM211EARZ-REEL	Analog Devices Inc.	Active	120 kbps	-40°C ~ 85°C	650 mV	Tape & Reel (TR)	1	4600 Pcs
HIN211ECBZ	Renesas Electronics Corporation	Active	230 kbps	0°C ~ 70°C	500 mV	Tube	3	3516 Pcs
HIN211ECBZ-T	Renesas Electronics Corporation	Active	230 kbps	0°C ~ 70°C	500 mV	Tape & Reel (TR)	3	751 Pcs

Engineering Selection Recommendations

Primary Recommendation: MAX211CDWR

The MAX211CDWR is the manufacturer-recommended direct replacement for the TRS211CDW. Both components are manufactured by Texas Instruments and share identical electrical specifications: 120 kbps data rate, 500 mV receiver hysteresis, 0°C to 70°C operating temperature range, and MSL 1 moisture sensitivity. The MAX211CDWR is available in Tape & Reel packaging with 4778 units in stock, providing superior availability compared to the obsolete TRS211CDW.

Secondary Recommendations: MAX211EEWI+ and MAX211EEWI+T

These Analog Devices Inc./Maxim Integrated components maintain identical electrical specifications to the TRS211CDW while offering extended operating temperature range (-40°C to 85°C). Both retain 120 kbps data rate, 500 mV receiver hysteresis, and MSL 1 rating. The MAX211EEWI+T variant in Tape & Reel format provides 3300 units in stock.

Alternative Recommendations: ADM211ARZ, ADM211ARZ-REEL, ADM211EARZ, ADM211EARZ-REEL

These Analog Devices Inc. components are manufacturer-recommended alternatives with identical data rate and supply voltage specifications. The receiver hysteresis specification is 650 mV, which remains within acceptable RS232 interface operating parameters. All variants offer extended operating temperature range (-40°C to 85°C) and MSL 1 rating. The ADM211EARZ-REEL variant provides the highest inventory availability at 4600 units.

Extended Temperature Range Option: HIN211EIBZ

The HIN211EIBZ from Renesas Electronics Corporation offers enhanced data rate performance at 230 kbps with extended operating temperature range (-40°C to 85°C). This component is suitable for applications requiring higher data throughput or operation in wider temperature environments. MSL 3 rating requires appropriate moisture control during storage and handling.

Temperature-Matched Alternative: HIN211ECBZ and HIN211ECBZ-T

These Renesas Electronics Corporation components match the TRS211CDW operating temperature range (0°C to 70°C) while providing 230 kbps data rate capability. Both maintain 500 mV receiver hysteresis and ROHS3 compliance. MSL 3 rating applies to both variants.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original TRS211CDW specification.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher data rate than the TRS211CDW?

A: Yes. The TRS211CDW operates at 120 kbps maximum data rate. Substitute parts with equal or higher data rates (such as HIN211EIBZ or HIN211ECBZ at 230 kbps) are electrically compatible and will function correctly in applications using the TRS211CDW. The higher data rate capability does not affect operation at lower speeds.

Q: What is the difference between receiver hysteresis values of 500 mV and 650 mV?

A: Both values are within acceptable RS232 interface specifications. The receiver hysteresis determines the voltage differential required to switch the receiver output state. The ADM211 series components with 650 mV hysteresis provide slightly more noise immunity compared to the 500 mV specification of the TRS211CDW and other alternatives. Both values are functionally compatible for RS232 transceiver operation.

Q: Can I substitute a Tape & Reel packaged part for a Tube packaged part?

A: Yes. Tape & Reel (TR) and Tube packaging formats contain identical components with different presentation methods for automated assembly. The electrical and mechanical specifications are identical. Selection between packaging formats depends on your assembly process requirements: Tape & Reel for automated pick-and-place equipment, Tube for manual assembly or lower-volume applications.

Q: What does MSL 3 mean compared to MSL 1?

A: Moisture Sensitivity Level (MSL) indicates the component's sensitivity to moisture absorption during storage. MSL 1 components have unlimited shelf life under normal conditions. MSL 3 components require storage in controlled humidity environments (typically below 60% relative humidity) and have a 168-hour floor life after exposure to higher humidity. Both ratings are acceptable; MSL 3 components require appropriate moisture control procedures during storage and handling.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance and REACH unaffected status, matching the regulatory compliance of the original TRS211CDW component.

Q: Which substitute part offers the best inventory availability?

A: The ADM211EARZ-REEL variant from Analog Devices Inc. provides the highest inventory availability at 4600 units in stock. The MAX211CDWR from Texas Instruments offers 4778 units, providing the highest overall availability among all listed alternatives.

Q: Can I use a substitute part with an extended operating temperature range in a 0°C to 70°C application?

A: Yes. Components specified for extended temperature ranges (-40°C to 85°C) are fully compatible with applications requiring only 0°C to 70°C operation. The extended range capability does not affect performance within the narrower temperature window of the original TRS211CDW specification.

Q: What is the significance of the 28-SOIC package specification?

A: The 28-SOIC (Small Outline Integrated Circuit) package is a standardized surface mount package with 28 pins, 0.295 inches wide, and 7.50mm body width. All substitute parts maintain this identical package footprint, ensuring direct compatibility with printed circuit board layouts designed for the TRS211CDW without requiring PCB redesign or rework.

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