DS14C232CM RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The DS14C232CM 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 ongoing design support and procurement. The DS14C232CM operates within a 4.5V to 5.5V supply voltage range with a receiver hysteresis of 400 mV and supports full-duplex RS232 communication with 2 drivers and 2 receivers.

Key Parameters

Parameter	Value
Manufacturer Part Number	DS14C232CM
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	400 mV
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the DS14C232CM 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: 0°C ~ 70°C minimum requirement
Receiver hysteresis: 400 mV baseline specification

Substitute parts are grouped into two categories based on compliance and availability status:

Category 1: Active Status Parts with RoHS3 Compliance — Recommended for new designs and long-term procurement. These parts meet modern regulatory requirements and have confirmed active production status.

Category 2: Obsolete Status Parts with RoHS3 Compliance — Suitable for legacy system maintenance and replacement scenarios where design continuity is prioritized.

Parameter Comparison

Part Number	Manufacturer	Status	Drivers/Receivers	Hysteresis (mV)	Data Rate	Supply Voltage	Temp Range	Package	RoHS
DS14C232CM	Texas Instruments	Obsolete	2/2	400	—	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	Non-compliant
LT1381CS#PBF	Analog Devices Inc.	Active	2/2	400	250KBd	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	ROHS3 Compliant
MAX232ACSE+	Analog Devices Inc./Maxim Integrated	Active	2/2	500	200kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	ROHS3 Compliant
MAX232ACSE+T	Analog Devices Inc./Maxim Integrated	Active	2/2	500	200kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	ROHS3 Compliant
MAX232D	Texas Instruments	Obsolete	2/2	500	120Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	ROHS3 Compliant
MAX232ECSE+	Analog Devices Inc./Maxim Integrated	Active	2/2	500	120Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	ROHS3 Compliant
MAX232ECSE+T	Analog Devices Inc./Maxim Integrated	Active	2/2	500	120Kbps	4.5V ~ 5.5V	0°C ~ 70°C	16-SOIC	ROHS3 Compliant
MAX232EESE+	Analog Devices Inc./Maxim Integrated	Active	2/2	500	120Kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	ROHS3 Compliant
MAX232EESE+T	Analog Devices Inc./Maxim Integrated	Active	2/2	500	120Kbps	4.5V ~ 5.5V	-40°C ~ 85°C	16-SOIC	ROHS3 Compliant
MAX3232CSE+	Analog Devices Inc./Maxim Integrated	Active	2/2	300	235Kbps	3V ~ 5.5V	0°C ~ 70°C	16-SOIC	ROHS3 Compliant
MAX3232CSE+T	Analog Devices Inc./Maxim Integrated	Active	2/2	300	235Kbps	3V ~ 5.5V	0°C ~ 70°C	16-SOIC	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation for New Designs:

The LT1381CS#PBF from Analog Devices Inc. provides the closest electrical match to the DS14C232CM. It maintains the 400 mV receiver hysteresis specification, supports the same 4.5V to 5.5V supply voltage range, and operates within the 0°C to 70°C temperature window. This part carries ROHS3 compliance and active product status, ensuring long-term availability and regulatory alignment.

Alternative for Extended Temperature Range:

The MAX232EESE+ and MAX232EESE+T variants extend the operating temperature range to -40°C to 85°C while maintaining full RS232 2/2 transceiver functionality. These parts are suitable for applications requiring broader thermal performance and are available in both tube and cut tape packaging options.

Alternative for Lower Supply Voltage Applications:

The MAX3232CSE+ and MAX3232CSE+T support a reduced minimum supply voltage of 3V, enabling operation in systems with lower power budgets. These parts deliver higher data rates (235Kbps) and maintain the 16-SOIC package form factor with ROHS3 compliance and active status.

Packaging Considerations:

Parts designated with "+T" suffix are supplied in cut tape and Digi-Reel packaging, suitable for automated assembly processes. Parts without the "+T" suffix are supplied in tube packaging, appropriate for manual assembly or lower-volume applications.

Frequently Asked Questions (FAQ)

Q: Can the LT1381CS#PBF directly replace the DS14C232CM?

A: Yes. Both parts maintain identical 2/2 driver/receiver configuration, 400 mV receiver hysteresis, 4.5V to 5.5V supply voltage range, and 0°C to 70°C operating temperature. The 16-SOIC package is identical. The LT1381CS#PBF is pin-compatible and functionally equivalent.

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

A: The MAX3232 series supports a lower minimum supply voltage (3V versus 4.5V) and delivers higher data rates (235Kbps versus 120Kbps). Both maintain 2/2 transceiver configuration and 16-SOIC packaging. The MAX3232 receiver hysteresis is 300 mV compared to 500 mV in MAX232 variants.

Q: Why do some part numbers end with "+T"?

A: The "+T" suffix indicates cut tape and Digi-Reel packaging for automated pick-and-place assembly. Parts without this suffix are supplied in tube packaging for manual handling. Electrical specifications are identical between packaging variants.

Q: Is the DS14C232CM RoHS compliant?

A: No. The DS14C232CM is RoHS non-compliant. All recommended substitute parts carry ROHS3 compliance certification, meeting current regulatory requirements for new product designs and procurement.

Q: Can I use a MAX232EESE+ in place of the DS14C232CM if my application requires extended temperature operation?

A: Yes, provided your circuit design accommodates the extended -40°C to 85°C operating range. The MAX232EESE+ maintains the same 2/2 transceiver configuration, 4.5V to 5.5V supply voltage, and 16-SOIC package. The 500 mV receiver hysteresis is higher than the original 400 mV specification but remains within acceptable RS232 operating margins.

Q: What data rate should I expect from these transceiver parts?

A: The DS14C232CM does not specify a data rate. Substitute parts range from 120Kbps (MAX232 series) to 250KBd (LT1381CS#PBF) to 235Kbps (MAX3232 series). All exceed typical RS232 communication requirements and are backward compatible with legacy systems operating at lower baud rates.

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