Part A
ADM3222ARUZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1215 PCS
- Package
- TSSOP-20
- Series
- Interface - Drivers, Receivers, Transceivers
Replacement verdict
Compatible functional replacement candidate
The ADM3202ARUZ and ADM3222ARUZ are functionally compatible RS-232 transceivers sharing the same TSSOP-16 footprint, dual-driver/dual-receiver configuration, and 3.3 V supply architecture, making the ADM3222ARUZ a viable drop-in candidate for the ADM3202ARUZ in most designs. Designers should confirm the enhanced ESD and shutdown-mode characteristics of the ADM3222ARUZ align with their system requirements before final qualification.
Package Type
High match
Driver/Receiver Count
High match
Supply Voltage
High match
ESD Rating
Validation required
Parts at a glance
Part B
ADM3202ARUZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7356 PCS
- Package
- TSSOP-16
- Series
- Interface - Drivers, Receivers, Transceivers
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADM3202ARUZ | ADM3222ARUZ | Why it matters |
|---|---|---|---|
| Number of Drivers/Receivers | 2/2 | 2/2 | Both provide two RS-232 drivers and two receivers, so the channel count is functionally equivalent for most serial interfaces. |
| Data Rate | 460 kbps | 460 kbps | Maximum data rate determines the highest baud rate the interface can support; identical rates mean equivalent throughput capability. |
| Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | The operating supply range must match the system rail; identical ranges allow direct substitution without power redesign. |
| External Capacitors Required | 4 x 0.1 µF | 4 x 0.1 µF plus 2 x 0.1 µF (VCC/VDD decoupling) | The charge-pump capacitor count affects board layout and BOM; the ADM3222 requires additional decoupling capacitors, changing the external component count. |
| Shutdown / Enable Control | No shutdown pin | Shutdown and enable pins | Shutdown capability allows power savings in battery systems; the ADM3222 offers this control while the ADM3202 does not, affecting low-power design options. |
| Package | 16-Lead TSSOP | 20-Lead TSSOP | Different package pin counts and footprints mean the parts are not drop-in replacements; PCB layout must accommodate the larger 20-lead package for the ADM3222. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical industrial temperature ranges ensure both parts suit the same environmental conditions. |
| RS-232 Output Voltage Swing | ±5 V (typical, at 3.3 V supply) | ±5 V (typical, at 3.3 V supply) | Output swing determines RS-232 compliance and noise margin; matching swings mean equivalent signal integrity. |
| Pin Count | 16 | 20 | Pin count directly affects footprint and routing; the difference prevents direct board-level interchangeability. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADM3222ARUZ | ADM3202ARUZ |
|---|---|---|
| Part Status | Active | Active |
| Type | Transceiver | Transceiver |
| Protocol | RS232 | RS232 |
| Number of Drivers/Receivers | 2/2 | 2/2 |
| Duplex | Full | Full |
| Receiver Hysteresis | 400 mV | 400 mV |
| Data Rate | 460Kbps | 460Kbps |
| Voltage - Supply | 3V ~ 5.5V | 3V ~ 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 ADM3202ARUZ and ADM3222ARUZ?
Both are dual-channel RS-232 line drivers/receivers in a 16-lead TSSOP package (RUZ suffix) from Analog Devices. The primary difference is that the ADM3222ARUZ includes an internal charge pump with a shutdown/enable feature and operates from a single 3.3 V supply with a wider data rate capability, while the ADM3202ARUZ is a lower-power variant with a fixed configuration. Designers should confirm exact supply current, data rate, and shutdown pin behavior against the respective datasheets before substitution.
Are the ADM3202ARUZ and ADM3222ARUZ pin-compatible?
Both devices are offered in the same 16-lead TSSOP (RUZ) package, but pin function assignments must be verified against each datasheet. The ADM3222ARUZ provides shutdown and enable control pins that may differ in function from the ADM3202ARUZ pinout. Do not assume direct drop-in compatibility without confirming the pinout in the official Analog Devices datasheets.
What supply voltage do these devices require?
Both the ADM3202ARUZ and ADM3222ARUZ are specified for operation from a single 3.3 V supply (nominally 3.0 V to 3.6 V), consistent with the ADM3202/ADM3222 family datasheets. Verify the exact recommended operating range in the manufacturer datasheet for the specific grade.
Do both parts include an internal charge pump for RS-232 levels?
Yes. Both the ADM3202ARUZ and ADM3222ARUZ integrate on-chip charge pump circuitry to generate the positive and negative RS-232 voltage levels from a single 3.3 V supply, eliminating the need for an external ±12 V supply. Refer to the Analog Devices datasheet for the specific charge pump capacitor requirements.
How many drivers and receivers do these devices provide?
Both the ADM3202ARUZ and ADM3222ARUZ are dual-channel devices providing two RS-232 drivers and two RS-232 receivers, per the ADM3202/ADM3222 family documentation. Confirm channel count and direction in the official datasheet before finalizing a design.
Does the ADM3222ARUZ offer shutdown capability that the ADM3202ARUZ lacks?
The ADM3222ARUZ includes shutdown/enable control functionality that allows the device to be placed in a low-power state, whereas the ADM3202ARUZ is a fixed-configuration variant without that shutdown feature. Designers requiring power-down control should select the ADM3222ARUZ and verify the shutdown pin logic in the datasheet.
Can the ADM3202ARUZ and ADM3222ARUZ be used interchangeably in an existing design?
Not without validation. Although both share the 16-lead TSSOP package and 3.3 V RS-232 function, differences in shutdown control, pin functions, and supply current mean a direct swap may not be functionally equivalent. Cross-check pinout, control pin behavior, and electrical specifications in the Analog Devices datasheets before substituting one for the other.