MAX232ACPE Equivalent & Substitute Parts

Part Overview

The MAX232ACPE is a 2/2 full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 16-pin DIP package. This interface IC is designed for serial communication applications requiring RS232 protocol compliance. The part is currently classified as obsolete, which necessitates identification of active equivalent and substitute components for new designs and ongoing production support. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts offer compatible functionality within defined parameter tolerances.

Key Parameters

Parameter	Specification
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex Mode	Full
Receiver Hysteresis	500 mV
Data Rate	200 kbps
Supply Voltage	4.5V – 5.5V
Operating Temperature	0°C – 70°C
Package Type	16-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MAX232ACPE is determined by strict adherence to the following critical parameters:

Core Compatibility Requirements:

Protocol: RS232
Configuration: 2/2 Drivers/Receivers, Full Duplex
Package: 16-DIP (0.300", 7.62mm)
Mounting: Through Hole
Supply Voltage: 4.5V – 5.5V
Moisture Sensitivity Level: 1 (Unlimited)

Allowable Parameter Variations:

Receiver Hysteresis: 400 mV to 650 mV (original: 500 mV)
Data Rate: 120 kbps to 230 kbps (original: 200 kbps)
Operating Temperature: 0°C – 70°C or -40°C – 85°C (original: 0°C – 70°C)
RoHS Status: ROHS3 Compliant acceptable for obsolete RoHS non-compliant original

Substitute parts are grouped into three categories: parametric equivalents (identical specifications), manufacturer-recommended alternatives (Analog Devices and Renesas variants), and compatible substitutes (within allowable parameter ranges).

Parameter Comparison

Part Number	Manufacturer	Product Status	Receiver Hysteresis	Data Rate	Operating Temperature	RoHS Status	Inventory (Pcs)
MAX232ACPE	Analog Devices Inc./Maxim Integrated	Obsolete	500 mV	200 kbps	0°C – 70°C	RoHS non-compliant	1,110
MAX232ACPE+	Analog Devices Inc./Maxim Integrated	Active	500 mV	200 kbps	0°C – 70°C	ROHS3 Compliant	39,726
MAX243CPE+	Analog Devices Inc./Maxim Integrated	Active	500 mV	200 kbps	0°C – 70°C	ROHS3 Compliant	2,200
ADM202JNZ	Analog Devices Inc.	Active	400 mV	Not specified	0°C – 70°C	ROHS3 Compliant	3,600
ADM232AANZ	Analog Devices Inc.	Active	400 mV	200 kbps	-40°C – 85°C	ROHS3 Compliant	2,432
ADM232LANZ	Analog Devices Inc.	Active	650 mV	120 kbps	-40°C – 85°C	ROHS3 Compliant	2,200
ADM232LJNZ	Analog Devices Inc.	Active	650 mV	120 kbps	0°C – 70°C	ROHS3 Compliant	5,140
HIN232ACPZ	Renesas Electronics Corporation	Active	500 mV	230 kbps	0°C – 70°C	ROHS3 Compliant	3,300
HIN232CPZ	Renesas Electronics Corporation	Active	500 mV	120 kbps	0°C – 70°C	ROHS3 Compliant	9,431
HIN232ECPZ	Renesas Electronics Corporation	Active	500 mV	230 kbps	0°C – 70°C	ROHS3 Compliant	10,100
HIN232IPZ	Renesas Electronics Corporation	Active	500 mV	120 kbps	-40°C – 85°C	ROHS3 Compliant	10,200

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalent): MAX232ACPE+ is the direct active equivalent with identical electrical specifications and RoHS3 compliance. This part is recommended as the primary replacement for obsolete MAX232ACPE stock.

Manufacturer-Recommended Alternatives: Analog Devices and Renesas Electronics provide multiple active alternatives within the RS232 2/2 transceiver family. Selection depends on specific application requirements:

Parts with 500 mV receiver hysteresis (MAX232ACPE+, MAX243CPE+, HIN232ACPZ, HIN232ECPZ) maintain the original hysteresis specification and are suitable for applications requiring identical input threshold characteristics.
Parts with 400 mV receiver hysteresis (ADM202JNZ, ADM232AANZ) offer tighter input thresholds and are compatible with applications tolerant of reduced hysteresis margins.
Parts with 650 mV receiver hysteresis (ADM232LANZ, ADM232LJNZ) provide increased noise immunity and are suitable for noisy environments.
Extended temperature range variants (ADM232AANZ, ADM232LANZ, HIN232IPZ) rated to -40°C – 85°C are required for industrial and automotive applications exceeding the standard 0°C – 70°C range.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and through-hole 16-DIP packaging. Supply voltage (4.5V – 5.5V) and package dimensions remain constant across all alternatives.

Frequently Asked Questions (FAQ)

Q: Can MAX232ACPE be directly replaced with MAX232ACPE+? A: Yes. MAX232ACPE+ is the active production equivalent with identical electrical specifications, package, and mounting type. The primary difference is RoHS3 compliance status and active product status versus obsolete classification.

Q: What is the difference between receiver hysteresis values (400 mV, 500 mV, 650 mV)? A: Receiver hysteresis determines the input threshold differential for RS232 signal detection. Lower hysteresis (400 mV) provides tighter thresholds; higher hysteresis (650 mV) provides greater noise immunity. Selection depends on signal integrity requirements and noise environment of the application.

Q: Are Renesas HIN232 parts compatible with Maxim MAX232 designs? A: Yes, within the specified parameter ranges. Both manufacturers produce RS232 2/2 transceivers in 16-DIP packages with identical pinouts and supply voltage requirements. Verify receiver hysteresis and data rate compatibility with your application before substitution.

Q: Which substitute part should be selected for industrial temperature applications? A: For operating temperatures below 0°C or above 70°C, select extended temperature variants: ADM232AANZ, ADM232LANZ, or HIN232IPZ, all rated to -40°C – 85°C.

Q: Does data rate variation affect circuit compatibility? A: Data rate specifications indicate maximum supported baud rates. Parts with lower data rate ratings (120 kbps) are compatible with applications operating at or below that rate. Parts with higher data rate ratings (230 kbps) are backward compatible with lower-speed applications.

Q: What is the significance of RoHS3 compliance on substitute parts? A: All active substitute parts carry ROHS3 compliance certification, meeting current environmental and hazardous substance restrictions. The original MAX232ACPE is RoHS non-compliant; RoHS3-compliant alternatives are required for new designs and applications subject to RoHS regulations.

Q: Are all substitute parts available in tube packaging? A: Yes, all listed substitute parts are supplied in tube packaging, consistent with the original MAX232ACPE packaging format for through-hole components.

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