Part A
ADM211EARSZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4657 ПКС
- Package
- SSOP-28
- Series
- Интерфейс - драйверы, приемники, передатчики
Replacement verdict
Compatible functional replacement candidate
The ADM211EARSZ and ADM211ARS-REEL are functionally equivalent RS-232 transceivers from the same ADM211 family, sharing identical core interface specifications, driver/receiver configuration, and supply requirements. The primary distinction lies in packaging format and qualification grade, with the ADM211EARSZ offering enhanced ESD protection. Both parts are viable substitutes in most designs, though the reel packaging and ESD rating differences should be validated against specific application and assembly requirements.
Interface Protocol
High match
Driver/Receiver Count
High match
ESD Protection Rating
Validation required
Packaging Format
Validation required
Parts at a glance
Part B
ADM211ARS-REEL
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6138 ПКС
- Package
- SSOP-28
- Series
- Интерфейс - драйверы, приемники, передатчики
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADM211EARSZ | ADM211ARS-REEL | Why it matters |
|---|---|---|---|
| ESD Protection (IEC 61000-4-2) | ±15 kV (Air), ±8 kV (Contact) | Not specified / standard | The "E" variant includes enhanced ESD protection, which is critical for robust RS-232 interfaces exposed to external connectors; the non-E variant lacks this specified rating. |
| Number of Drivers/Receivers | 4/5 | 4/5 | Determines how many RS-232 transmit and receive lines the device can support; identical here, so both fit the same interface topology. |
| Data Rate | 120 kbps | 120 kbps | Sets the maximum serial throughput; matching values confirm both are suitable for the same baud-rate requirements. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Both operate from a single 5 V rail, so power-supply design is interchangeable between the two parts. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Confirms both parts are rated for industrial temperature environments, allowing use in the same applications. |
| Package / Case | 28-SSOP (SSOP-28) | 28-SSOP (SSOP-28) | Identical package ensures the same PCB footprint and assembly process can be used for either part. |
| Packaging / Ordering Format | Tube | Tape & Reel | Affects manufacturing handling and pick-and-place assembly; reel packaging suits automated high-volume production, while tube suits low-volume or prototyping. |
| Mounting Type | Surface Mount | Surface Mount | Both are surface-mount devices, so they are compatible with the same board assembly technology. |
| Charge Pump / Integrated Capacitors | On-chip charge pump (external caps) | On-chip charge pump (external caps) | Both generate RS-232 voltage levels internally from a single 5 V supply, so no additional bipolar supplies are needed for either part. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADM211EARSZ | ADM211ARS-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Type | Transceiver | Transceiver |
| Protocol | RS232 | RS232 |
| Number of Drivers/Receivers | 4/5 | 4/5 |
| Duplex | Full | Full |
| Receiver Hysteresis | 650 mV | 650 mV |
| Data Rate | 120Kbps | 120Kbps |
| 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 ADM211EARSZ and ADM211ARS-REEL?
Both are Analog Devices RS-232 transceivers in a 28-lead SSOP package with the same core function. The ADM211EARSZ is supplied in tube packaging and is specified for the extended industrial temperature range of −40°C to +85°C. The ADM211ARS-REEL is supplied on a 13-inch tape-and-reel for automated assembly and is specified for the industrial temperature range of −40°C to +85°C. The primary differences are packaging format and the ordering suffix; electrical function is equivalent per the respective datasheets.
Are ADM211EARSZ and ADM211ARS-REEL electrically interchangeable?
Yes, both devices are the same ADM211 RS-232 line driver/receiver with four drivers and five receivers, operating from a single +5 V supply and featuring on-chip charge pump circuitry. They share the same pinout and package (28-lead SSOP). Designers should confirm the exact temperature grade and packaging requirements against the Analog Devices datasheet before substituting one for the other in production.
What is the difference between the "E" and non-"E" suffix in these part numbers?
The "E" in ADM211EARSZ denotes the extended temperature grade, specified for operation from −40°C to +85°C. The ADM211ARS-REEL uses the standard industrial grade designation. Both parts are rated for −40°C to +85°C per their datasheets, but the ordering codes reflect different qualification and packaging conventions. Always verify the exact temperature specification on the manufacturer's datasheet for the specific orderable part number.
What packaging options do these two part numbers offer?
ADM211EARSZ is supplied in tube packaging, suitable for low-to-medium volume production and prototyping. ADM211ARS-REEL is supplied on tape-and-reel, which is compatible with automated pick-and-place assembly lines and is preferred for high-volume manufacturing. Both use the same 28-lead SSOP (Shrink Small Outline Package) body.
What are the supply voltage and data rate specifications for these devices?
Both ADM211EARSZ and ADM211ARS-REEL operate from a single +5 V ±10% supply and integrate an on-chip dual charge pump to generate the RS-232 voltage levels. They support data rates up to 120 kbps. These parameters are common to the ADM211 family and should be confirmed against the Analog Devices datasheet for the specific orderable part.
Can ADM211ARS-REEL be used as a drop-in replacement for ADM211EARSZ?
Because both parts share the same die, pinout, and 28-lead SSOP package, they are functionally drop-in compatible in terms of PCB footprint and electrical behavior. The choice between them typically depends on the required packaging format (tube vs. tape-and-reel) and the temperature grade specified in the design. Verify the exact orderable part number and its datasheet parameters before finalizing a substitution.
What ESD protection do these RS-232 transceivers provide?
The ADM211 family includes ESD protection on the RS-232 input/output pins, typically rated to ±15 kV using the Human Body Model (HBM) for the RS-232 pins, per the Analog Devices datasheet. Designers should consult the specific datasheet for ADM211EARSZ and ADM211ARS-REEL to confirm the exact ESD ratings and test conditions applicable to each orderable part.