DS14C232TMX RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The DS14C232TMX is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in a 16-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The DS14C232TMX operates within a 4.5V to 5.5V supply voltage range and supports full RS232 protocol communication with 2 drivers and 2 receivers.

Key Parameters

Parameter	DS14C232TMX
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Receiver Hysteresis	400 mV
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the DS14C232TMX is determined by the following critical parameters:

Protocol: RS232 full-duplex communication
Configuration: 2 drivers and 2 receivers
Package: 16-SOIC surface mount form factor
Supply voltage compatibility: 4.5V ~ 5.5V minimum requirement
Operating temperature range: -40°C ~ 85°C capability
Receiver hysteresis: 400 mV baseline

Substitute parts are grouped into two categories based on operating temperature range and receiver hysteresis specifications:

Category A (Extended Temperature, Matched Hysteresis): MAX232EESE+ and MAX232EESE+T maintain the -40°C ~ 85°C operating range with 500 mV receiver hysteresis.

Category B (Extended Temperature, Lower Hysteresis): MAX3232ESE+ and MAX3232ESE+T operate across -40°C ~ 85°C with 300 mV receiver hysteresis and support 3V ~ 5.5V supply voltage.

Category C (Commercial Temperature Range): MAX232ACSE+, MAX232ACSE+T, MAX232ECSE+, MAX232ECSE+T, MAX3232CSE+, and MAX3232CSE+T operate within 0°C ~ 70°C with varying hysteresis specifications.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Package	Supply Voltage	Operating Temperature	Receiver Hysteresis	Data Rate	Product Status	RoHS Status
DS14C232TMX	Texas Instruments	RS232	2/2	16-SOIC	4.5V ~ 5.5V	-40°C ~ 85°C	400 mV	—	Obsolete	RoHS non-compliant
MAX232ACSE+	Analog Devices Inc./Maxim Integrated	RS232	2/2	16-SOIC	4.5V ~ 5.5V	0°C ~ 70°C	500 mV	200 kbps	Active	ROHS3 Compliant
MAX232ACSE+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	16-SOIC	4.5V ~ 5.5V	0°C ~ 70°C	500 mV	200 kbps	Active	ROHS3 Compliant
MAX232ECSE+	Analog Devices Inc./Maxim Integrated	RS232	2/2	16-SOIC	4.5V ~ 5.5V	0°C ~ 70°C	500 mV	120 kbps	Active	ROHS3 Compliant
MAX232ECSE+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	16-SOIC	4.5V ~ 5.5V	0°C ~ 70°C	500 mV	120 kbps	Active	ROHS3 Compliant
MAX232EESE+	Analog Devices Inc./Maxim Integrated	RS232	2/2	16-SOIC	4.5V ~ 5.5V	-40°C ~ 85°C	500 mV	120 kbps	Active	ROHS3 Compliant
MAX232EESE+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	16-SOIC	4.5V ~ 5.5V	-40°C ~ 85°C	500 mV	120 kbps	Active	ROHS3 Compliant
MAX3232CSE+	Analog Devices Inc./Maxim Integrated	RS232	2/2	16-SOIC	3V ~ 5.5V	0°C ~ 70°C	300 mV	235 kbps	Active	ROHS3 Compliant
MAX3232CSE+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	16-SOIC	3V ~ 5.5V	0°C ~ 70°C	300 mV	235 kbps	Active	ROHS3 Compliant
MAX3232ESE+	Analog Devices Inc./Maxim Integrated	RS232	2/2	16-SOIC	3V ~ 5.5V	-40°C ~ 85°C	300 mV	235 kbps	Active	ROHS3 Compliant
MAX3232ESE+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	16-SOIC	3V ~ 5.5V	-40°C ~ 85°C	300 mV	235 kbps	Active	ROHS3 Compliant

Engineering Selection Recommendations

For applications requiring full replacement of the obsolete DS14C232TMX with active product status and RoHS3 compliance:

Extended Temperature Applications (-40°C ~ 85°C): Select MAX232EESE+ or MAX232EESE+T for direct thermal range compatibility. These parts maintain the 4.5V ~ 5.5V supply voltage specification and provide active product status with ROHS3 compliance. Alternatively, MAX3232ESE+ or MAX3232ESE+T offer extended temperature operation with lower receiver hysteresis (300 mV) and broader supply voltage support (3V ~ 5.5V).

Commercial Temperature Applications (0°C ~ 70°C): MAX3232CSE+ or MAX3232CSE+T are suitable for reduced operating temperature ranges, offering the lowest receiver hysteresis (300 mV) and highest data rate (235 kbps) among available substitutes. These parts support 3V ~ 5.5V supply voltage.

Packaging Considerations: Parts designated with "+T" suffix are supplied in Cut Tape (CT) & Digi-Reel® packaging, while parts without this suffix are supplied in Tube packaging. Selection depends on assembly process requirements.

All substitute parts are manufactured by Analog Devices Inc./Maxim Integrated and maintain the 16-SOIC surface mount package form factor, ensuring mechanical compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can MAX232EESE+ directly replace DS14C232TMX in all applications?

A: MAX232EESE+ and MAX232EESE+T are functionally compatible substitutes for extended temperature applications. Both maintain the -40°C ~ 85°C operating range and 4.5V ~ 5.5V supply voltage. The receiver hysteresis differs (500 mV vs. 400 mV), which does not prevent substitution but represents a design parameter change. Both parts are active products with ROHS3 compliance.

Q: What is the difference between MAX232 and MAX3232 series substitutes?

A: The MAX3232 series supports a broader supply voltage range (3V ~ 5.5V) compared to MAX232 series (4.5V ~ 5.5V). MAX3232 parts also feature lower receiver hysteresis (300 mV) and higher data rates (235 kbps). Selection depends on application supply voltage requirements and signal integrity specifications.

Q: Are packaging variants (+T vs. non-+T) electrically equivalent?

A: Yes. The "+T" designation indicates Cut Tape (CT) & Digi-Reel® packaging, while parts without this suffix are supplied in Tube packaging. Electrical specifications and performance are identical; packaging selection is determined by assembly process and handling requirements.

Q: Which substitute part is recommended for new designs?

A: For new designs requiring extended temperature operation, MAX3232ESE+ or MAX3232ESE+T are recommended. These parts offer active product status, ROHS3 compliance, extended temperature range (-40°C ~ 85°C), lower receiver hysteresis (300 mV), higher data rate (235 kbps), and broader supply voltage support (3V ~ 5.5V).

Q: Is the DS14C232TMX obsolete status a concern for substitution?

A: Yes. The DS14C232TMX is classified as obsolete, making substitution necessary for new production and long-term supply assurance. All recommended substitute parts maintain active product status with established manufacturing support and availability.

Q: Do all substitute parts maintain the same 16-SOIC package dimensions?

A: Yes. All substitute parts use the 16-SOIC (0.154", 3.90mm Width) package, ensuring mechanical and footprint compatibility with existing PCB designs without layout modifications.

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