MAX232EING4 Equivalent & Substitute Parts

Part Overview

The MAX232EING4 is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments, housed in a 16-pin DIP package. This interface IC is designed for serial communication applications requiring RS232 protocol compliance. The MAX232EING4 is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing production and maintenance applications. Active alternatives from Texas Instruments, Analog Devices, and Renesas Electronics provide functional equivalence while maintaining design compatibility.

Key Parameters

Parameter	MAX232EING4 Specification
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	500 mV
Data Rate	250 kbps
Voltage Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Package	16-DIP (0.300", 7.62mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MAX232EING4 is determined by the following critical parameters:

Protocol: RS232
Configuration: 2/2 Drivers/Receivers, Full Duplex
Package: 16-DIP (0.300", 7.62mm)
Voltage Supply: 4.5V ~ 5.5V
Mounting Type: Through Hole
RoHS Compliance: ROHS3 Compliant

Substitute parts must match all core electrical and mechanical parameters. Variations in receiver hysteresis (400–650 mV), data rate (120 kbps–250 kbps), and operating temperature range are acceptable within the RS232 protocol specification, provided the application requirements do not mandate the original part's specific performance envelope.

Parameter Comparison

Part Number	Manufacturer	Drivers/Receivers	Data Rate	Receiver Hysteresis	Operating Temperature	Product Status	Inventory
MAX232EING4	Texas Instruments	2/2	250 kbps	500 mV	-40°C ~ 85°C	Discontinued	1015 Pcs
MAX232EIN	Texas Instruments	2/2	250 kbps	500 mV	-40°C ~ 85°C	Active	1962 Pcs
MAX232EEPE+	Analog Devices Inc./Maxim Integrated	2/2	120 kbps	500 mV	-40°C ~ 85°C	Active	1550 Pcs
ADM232AANZ	Analog Devices Inc.	2/2	200 kbps	400 mV	-40°C ~ 85°C	Active	2432 Pcs
ADM232LANZ	Analog Devices Inc.	2/2	120 kbps	650 mV	-40°C ~ 85°C	Active	2200 Pcs
ADM232LJNZ	Analog Devices Inc.	2/2	120 kbps	650 mV	0°C ~ 70°C	Active	5140 Pcs
HIN232ACPZ	Renesas Electronics Corporation	2/2	230 kbps	500 mV	0°C ~ 70°C	Active	3300 Pcs
HIN232CPZ	Renesas Electronics Corporation	2/2	120 kbps	500 mV	0°C ~ 70°C	Active	9431 Pcs
HIN232ECPZ	Renesas Electronics Corporation	2/2	230 kbps	500 mV	0°C ~ 70°C	Active	10100 Pcs
HIN232IPZ	Renesas Electronics Corporation	2/2	120 kbps	500 mV	-40°C ~ 85°C	Active	10200 Pcs
LT1081CN#PBF	Analog Devices Inc.	2/2	250 kbps	400 mV	0°C ~ 70°C	Active	2148 Pcs

Engineering Selection Recommendations

Primary Recommendation: MAX232EIN

The MAX232EIN is the direct active equivalent from Texas Instruments. It maintains identical electrical specifications (250 kbps data rate, 500 mV receiver hysteresis, -40°C ~ 85°C operating range) and package configuration. This part is currently in active production status with adequate inventory availability.

Secondary Recommendations by Application Requirement:

For applications requiring extended temperature range (-40°C ~ 85°C) with active product status, the following alternatives are suitable:

MAX232EEPE+ (Analog Devices Inc./Maxim Integrated): Maintains full temperature range; data rate reduced to 120 kbps
ADM232AANZ (Analog Devices Inc.): Full temperature range; data rate 200 kbps with 400 mV hysteresis
ADM232LANZ (Analog Devices Inc.): Full temperature range; data rate 120 kbps with 650 mV hysteresis
HIN232IPZ (Renesas Electronics Corporation): Full temperature range; data rate 120 kbps with 500 mV hysteresis

For applications with commercial temperature range (0°C ~ 70°C), Renesas HIN232 series parts offer high inventory availability and data rates up to 230 kbps.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and identical 16-DIP package configuration.

Frequently Asked Questions (FAQ)

Q: Can MAX232EING4 be directly replaced with MAX232EIN?

A: Yes. MAX232EIN is the active equivalent from Texas Instruments with identical electrical specifications and package configuration. Pin-for-pin compatibility is maintained.

Q: What is the difference between 120 kbps and 250 kbps data rate variants?

A: Data rate specification indicates the maximum serial communication speed the transceiver supports. Applications operating below the specified data rate of the substitute part will function correctly. For example, a 120 kbps part can operate at lower speeds but cannot exceed 120 kbps.

Q: Are Analog Devices and Renesas parts pin-compatible with the original MAX232EING4?

A: Yes. All substitute parts listed maintain the 16-DIP package configuration with identical pinout. Mechanical and electrical pin assignments are compatible.

Q: What does receiver hysteresis variation (400–650 mV) mean for substitution?

A: Receiver hysteresis affects the input threshold switching behavior. The MAX232EING4 specifies 500 mV. Substitute parts with different hysteresis values (400 mV or 650 mV) will exhibit slightly different input sensitivity characteristics but remain functionally compatible for standard RS232 applications.

Q: Which substitute part has the highest inventory availability?

A: HIN232IPZ (Renesas Electronics Corporation) has the highest inventory at 10,200 pieces, followed by HIN232ECPZ at 10,100 pieces.

Q: Can I use a substitute part with a narrower operating temperature range?

A: Substitution is acceptable if your application operates within the substitute part's temperature range. For example, if your design operates only at 0°C ~ 70°C, parts specified for this range are suitable. If your design requires -40°C ~ 85°C operation, only substitute parts rated for this extended range are appropriate.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the original MAX232EING4 compliance status.

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