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DS232AR+ RS232 Transceiver Equivalent & Substitute Parts
Part Overview
The DS232AR+ is a 2/2 full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 16-SOIC package. This interface IC operates across the 4.5V to 5.5V supply range with a 350 kbps data rate and 500 mV receiver hysteresis. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. Substitute parts must maintain compatibility across electrical specifications, mechanical packaging, and functional protocol requirements.
Substiute Parts
Key Parameters
| Parameter | DS232AR+ Specification |
|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated |
| Protocol | RS232 |
| Type | Transceiver |
| Number of Drivers/Receivers | 2/2 |
| Duplex | Full |
| Receiver Hysteresis | 500 mV |
| Data Rate | 350 kbps |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution eligibility for the DS232AR+ is determined by the following critical parameters:
- Protocol compatibility: RS232 full-duplex transceiver
- Electrical interface: 2/2 driver/receiver configuration
- Supply voltage range: 4.5V ~ 5.5V
- Mounting technology: Surface mount, 16-SOIC package
- Regulatory compliance: ROHS3 compliant
Substitute parts are grouped into two categories based on package width variance:
Category A (0.154" / 3.90mm Width): MAX232ACSE+, ADM232AARNZ, HIN232ACBNZ, HIN232ACBNZ-T. These parts maintain identical electrical protocols and supply specifications with reduced package footprint.
Category B (0.295" / 7.50mm Width): ADM232AARNZ-REEL, ADM232AARNZ-REEL7, ADM232LARZ, ADM232LARZ-REEL, HIN232CBZ, HIN232CBZ-T. These parts match the original DS232AR+ package width and maintain full electrical compatibility.
All substitute parts maintain RS232 protocol compliance, 2/2 transceiver configuration, full-duplex operation, and 4.5V ~ 5.5V supply voltage range. Data rate variations and receiver hysteresis differences do not preclude substitution when the application does not require the DS232AR+'s maximum 350 kbps specification.
Parameter Comparison
| Part Number | Manufacturer | Protocol | Drivers/Receivers | Data Rate | Receiver Hysteresis | Supply Voltage | Operating Temperature | Package Width | Product Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|
| DS232AR+ | Analog Devices Inc./Maxim Integrated | RS232 | 2/2 | 350 kbps | 500 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 0.295" (7.50mm) | Obsolete | 1120 |
| MAX232ACSE+ | Analog Devices Inc./Maxim Integrated | RS232 | 2/2 | 200 kbps | 500 mV | 4.5V ~ 5.5V | 0°C ~ 70°C | 0.154" (3.90mm) | Active | 1302 |
| ADM232AARNZ | UMW | RS232 | 2/2 | 120 kbps | Not specified | 4.5V ~ 5.5V | -40°C ~ 85°C | 0.154" (3.90mm) | Active | 2453 |
| ADM232AARNZ-REEL | Analog Devices Inc. | RS232 | 2/2 | 200 kbps | 400 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 0.154" (3.90mm) | Active | 4793 |
| ADM232AARNZ-REEL7 | Analog Devices Inc. | RS232 | 2/2 | 200 kbps | 400 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 0.154" (3.90mm) | Active | 4200 |
| ADM232LARZ | Analog Devices Inc. | RS232 | 2/2 | 120 kbps | 650 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 0.295" (7.50mm) | Active | 1110 |
| ADM232LARZ-REEL | Analog Devices Inc. | RS232 | 2/2 | 120 kbps | 650 mV | 4.5V ~ 5.5V | -40°C ~ 85°C | 0.295" (7.50mm) | Active | 5200 |
| HIN232ACBNZ | Renesas Electronics Corporation | RS232 | 2/2 | 230 kbps | 500 mV | 4.5V ~ 5.5V | 0°C ~ 70°C | 0.154" (3.90mm) | Active | 1375 |
| HIN232ACBNZ-T | Renesas Electronics Corporation | RS232 | 2/2 | 230 kbps | 500 mV | 4.5V ~ 5.5V | 0°C ~ 70°C | 0.154" (3.90mm) | Active | 8899 |
| HIN232CBZ | Renesas Electronics Corporation | RS232 | 2/2 | 120 kbps | 500 mV | 4.5V ~ 5.5V | 0°C ~ 70°C | 0.295" (7.50mm) | Active | 5606 |
| HIN232CBZ-T | Renesas Electronics Corporation | RS232 | 2/2 | 120 kbps | 500 mV | 4.5V ~ 5.5V | 0°C ~ 70°C | 0.295" (7.50mm) | Active | 10400 |
Engineering Selection Recommendations
All listed substitute parts are ROHS3 compliant and maintain active product status, ensuring long-term availability and regulatory alignment. Selection between substitute options depends on application-specific requirements:
For applications requiring the DS232AR+'s extended operating temperature range (-40°C ~ 85°C), select from ADM232AARNZ, ADM232AARNZ-REEL, ADM232AARNZ-REEL7, ADM232LARZ, or ADM232LARZ-REEL. These parts maintain full temperature specification compatibility.
For applications operating within the 0°C ~ 70°C range, HIN232ACBNZ, HIN232ACBNZ-T, HIN232CBZ, and HIN232CBZ-T offer active status with established supply chains.
Package footprint selection between 0.154" (3.90mm) and 0.295" (7.50mm) width must align with PCB layout constraints. The 0.295" width variants (ADM232LARZ, ADM232LARZ-REEL, HIN232CBZ, HIN232CBZ-T) directly match the DS232AR+ footprint for drop-in replacement scenarios.
Data rate considerations: Applications requiring data rates above 200 kbps should prioritize HIN232ACBNZ or HIN232ACBNZ-T (230 kbps capability). Applications with lower bandwidth requirements can utilize ADM232LARZ variants or HIN232CBZ variants (120 kbps).
Frequently Asked Questions (FAQ)
Q: Can MAX232ACSE+ directly replace DS232AR+ in existing designs?
A: MAX232ACSE+ maintains RS232 protocol, 2/2 transceiver configuration, and 4.5V ~ 5.5V supply compatibility. However, the package width differs (0.154" versus 0.295"), requiring PCB layout modification. Operating temperature range is narrower (0°C ~ 70°C versus -40°C ~ 85°C), limiting use in extended temperature applications.
Q: What is the difference between ADM232AARNZ and ADM232AARNZ-REEL variants?
A: Both parts share identical electrical specifications (200 kbps data rate, 400 mV receiver hysteresis, -40°C ~ 85°C operating range). The distinction lies in packaging format: ADM232AARNZ-REEL and ADM232AARNZ-REEL7 are supplied on cut tape with digi-reel, while ADM232AARNZ is supplied in standard cut tape format. Electrical performance is equivalent.
Q: Are HIN232 parts suitable for high-speed RS232 applications?
A: HIN232ACBNZ and HIN232ACBNZ-T support 230 kbps data rate, approaching the DS232AR+ specification of 350 kbps. HIN232CBZ and HIN232CBZ-T are rated for 120 kbps. Selection depends on application bandwidth requirements. Operating temperature is limited to 0°C ~ 70°C for all HIN232 variants.
Q: What packaging considerations apply when substituting DS232AR+?
A: The DS232AR+ uses a 16-SOIC package with 0.295" (7.50mm) width. Direct footprint compatibility is maintained only with ADM232LARZ, ADM232LARZ-REEL, HIN232CBZ, and HIN232CBZ-T. Narrower 0.154" (3.90mm) variants require PCB redesign but offer reduced board space consumption.
Q: Which substitute part offers the best temperature range match?
A: ADM232AARNZ, ADM232AARNZ-REEL, ADM232AARNZ-REEL7, ADM232LARZ, and ADM232LARZ-REEL all maintain the -40°C ~ 85°C operating range of the DS232AR+. All other substitutes are limited to 0°C ~ 70°C operation.
Q: Is receiver hysteresis a critical parameter for substitution?
A: Receiver hysteresis affects noise immunity and signal integrity. DS232AR+ specifies 500 mV. Substitutes with matching 500 mV hysteresis include MAX232ACSE+, HIN232ACBNZ, HIN232ACBNZ-T, HIN232CBZ, and HIN232CBZ-T. ADM232 variants specify 400 mV or are unspecified. Applications with marginal signal quality should prioritize 500 mV hysteresis matching.
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