Part A
ADM232LARZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 1315 PCS
- Package
- SOIC-16
- Series
- Interfaces - pilotes, récepteurs, émetteurs - récepteurs
Replacement verdict
Compatible functional replacement candidate
The ADM232LARZ is a functionally compatible replacement candidate for the ADM232AARNZ-REEL, as both are dual RS-232 transceivers in the same SOIC-16 package with matching pinout and supply voltage range. Designers should validate the low-power shutdown threshold and data rate margin against the target application before final qualification.
Package Type
High match
Pin Configuration
High match
Supply Voltage Range
High match
Data Rate
Validation required
Parts at a glance
Part B
ADM232AARNZ-REEL
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 6073 PCS
- Package
- SOIC-16
- Series
- Interfaces - pilotes, récepteurs, émetteurs - récepteurs
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADM232AARNZ-REEL | ADM232LARZ | Why it matters |
|---|---|---|---|
| Data Rate | 200 kbps | 120 kbps | Maximum guaranteed data rate determines the fastest serial communication the interface can support; a slower part may bottleneck high-speed links. |
| Number of Drivers/Receivers | 2/2 | 2/2 | The driver/receiver count defines how many RS-232 channels are available; matching counts ensures pin-compatible channel usage. |
| Supply Voltage | 5 V | 5 V | Operating supply voltage must match the system rail; both are 5 V single-supply devices, so power design is interchangeable. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | The temperature range indicates environmental robustness; identical industrial ranges mean equivalent thermal suitability. |
| Package / Mounting | 16-SOIC (Surface Mount) | 16-SOIC (Surface Mount) | Package and mounting style determine PCB footprint compatibility; matching SOIC packages allow drop-in board substitution. |
| Number of Pins | 16 | 16 | Pin count must match for physical and electrical pinout compatibility on the same footprint. |
| Charge Pump / External Capacitors | Internal charge pump, 4 external capacitors | Internal charge pump, 4 external capacitors | On-chip charge pump with external caps generates RS-232 voltage levels from a single 5 V rail; matching topology simplifies redesign. |
| RoHS Compliance | RoHS Compliant | RoHS Compliant | RoHS status affects regulatory compliance and solderability; both compliant parts meet modern environmental requirements. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADM232LARZ | ADM232AARNZ-REEL |
|---|---|---|
| Part Status | Active | Active |
| Type | Transceiver | Transceiver |
| Protocol | RS232 | RS232 |
| Number of Drivers/Receivers | 2/2 | 2/2 |
| Duplex | Full | Full |
| Receiver Hysteresis | 650 mV | 400 mV |
| Data Rate | 120Kbps | 200kbps |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the ADM232AARNZ-REEL and the ADM232LARZ?
The ADM232AARNZ-REEL is a dual RS-232 line driver/receiver supplied in a 16-lead SOIC package and delivered on tape and reel, while the ADM232LARZ is the same ADM232L functional family device supplied in a 16-lead SOIC tube format. Both are dual transmitters/receivers intended for RS-232 communication; the primary differences are packaging/delivery format and the specific orderable part number. Designers should confirm the exact datasheet revision for each orderable part before release.
Are the ADM232AARNZ-REEL and ADM232LARZ functionally interchangeable?
Both are dual RS-232 driver/receiver devices in the ADM232 family and share the same 16-lead SOIC footprint, but interchangeability must be verified against the manufacturer datasheet for each specific orderable part, including supply voltage range, data rate, and external capacitor requirements. Do not substitute without confirming all parameters against the official Analog Devices documentation.
What package do these devices use?
Both the ADM232AARNZ-REEL and the ADM232LARZ are offered in a 16-lead SOIC (Small Outline Integrated Circuit) package, which allows surface-mount assembly and a common PCB land pattern. Always confirm the package drawing in the manufacturer datasheet for the exact orderable part number.
What is the difference between the "-REEL" suffix and the tube packaging?
The "-REEL" suffix on ADM232AARNZ-REEL indicates tape-and-reel packaging, which is suited to automated pick-and-place production lines. The ADM232LARZ is supplied in tube packaging, which is typically used for manual assembly, prototyping, or low-volume runs. The electrical device is defined by the base part number; packaging affects handling and inventory, not the silicon.
What supply voltage do these RS-232 transceivers require?
The ADM232 family is designed for +5 V single-supply operation with on-chip charge pump circuitry to generate the RS-232 voltage levels. Confirm the exact supply voltage range and charge pump capacitor values in the Analog Devices datasheet for the specific orderable part before design.
How many drivers and receivers do these devices provide?
Both the ADM232AARNZ-REEL and the ADM232LARZ are dual RS-232 transceivers, providing two drivers and two receivers in a single 16-lead SOIC package. This configuration supports two full RS-232 channels for serial communication interfaces.
Which part should be selected for high-volume automated assembly?
For high-volume automated surface-mount assembly, the ADM232AARNZ-REEL is the appropriate choice because its tape-and-reel packaging is designed for pick-and-place equipment. The ADM232LARZ tube format is better suited to low-volume or manual handling. Selection should also account for any electrical differences documented in the respective datasheets.