Part A
ADM3232EARUZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 5292 個数
- Package
- TSSOP-16
- Series
- インターフェース - ドライバ、レシーバ、トランシーバ
Replacement verdict
Compatible functional replacement candidate
The ADM3232EARUZ and ADM3222ARU are both RS-232 transceivers in a 20-lead TSSOP package with an overlapping supply voltage range and identical pin function assignments, making the ADM3232EARUZ a viable functional replacement candidate for the ADM3222ARU in most designs. However, the two devices differ in their charge pump architecture and external capacitor requirements, so the surrounding passive network must be reviewed before substitution. Designers should validate the capacitor configuration and confirm that the reduced external component count of the ADM3232EARUZ does not affect the target application's EMC and transient performance.
Package Type
High match
Supply Voltage Range
High match
External Capacitor Configuration
Validation required
Data Rate
Validation required
Parts at a glance
Part B
ADM3222ARU
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 6745 個数
- Package
- TSSOP-20
- Series
- インターフェース - ドライバ、レシーバ、トランシーバ
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADM3232EARUZ | ADM3222ARU | Why it matters |
|---|---|---|---|
| Number of Drivers/Receivers | 2/2 | 2/2 | Both are dual transceivers, so channel count is functionally equivalent for RS-232 interfacing. |
| Data Rate | 460 kbps | 200 kbps | The higher data rate of the ADM3232EARUZ supports faster serial communication, which may matter for high-throughput links. |
| ESD Protection (IEC 61000-4-2, Air/Ground) | ±15 kV | ±15 kV | Both offer enhanced ESD protection, important for robust RS-232 ports exposed to external connections. |
| Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | Identical wide supply range allows both to operate from either 3.3 V or 5 V rails. |
| Number of External Capacitors | 4 (0.1 µF) | 4 (0.1 µF) | Both use small charge-pump capacitors, simplifying board layout and reducing footprint. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical industrial temperature range supports use in harsh environments. |
| Package / Mounting | 20-TSSOP (Surface Mount) | 20-TSSOP (Surface Mount) | Same package and footprint enables drop-in PCB compatibility between the two parts. |
| Shutdown / Enable Feature | Yes (active-low SHDN) | Yes (active-low SHDN) | Both provide shutdown control for power savings when the interface is idle. |
| Receiver Input Impedance | 5 kΩ (typ) | 5 kΩ (typ) | Standard RS-232 receiver input impedance ensures compatibility with standard RS-232 drivers. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADM3232EARUZ | ADM3222ARU |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Type | Transceiver | Transceiver |
| Protocol | RS232 | RS232 |
| Number of Drivers/Receivers | 2/2 | 2/2 |
| Duplex | Full | Full |
| Receiver Hysteresis | 500 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 ADM3232EARUZ and the ADM3222ARU?
The ADM3232EARUZ is a 3.3 V RS-232 transceiver with integrated ESD protection rated to ±15 kV (IEC 1000-4-2 Air-Gap Discharge) and ±8 kV (Contact Discharge), and it supports data rates up to 460 kbps. The ADM3222ARU is a 3.3 V RS-232 transceiver with two drivers and two receivers that supports data rates up to 460 kbps but does not include the enhanced ±15 kV ESD protection featured on the ADM3232E. Both are offered in a 20-lead TSSOP (RU) package.
Are the ADM3232EARUZ and ADM3222ARU pin-compatible?
Both devices are supplied in a 20-lead TSSOP (RU) package and share the same pinout for the driver/receiver signal, charge pump, and supply pins. However, designers should confirm the exact pin function assignments against the respective Analog Devices datasheets before substituting, since the ADM3232E includes ESD-protection structures that may affect pin definitions.
What data rate do the ADM3232EARUZ and ADM3222ARU support?
Both the ADM3232EARUZ and the ADM3222ARU are specified for data rates up to 460 kbps, which is sufficient for standard RS-232 communication and most legacy serial interfaces.
What is the ESD protection rating of the ADM3232EARUZ compared with the ADM3222ARU?
The ADM3232EARUZ features enhanced ESD protection on the RS-232 I/O pins rated to ±15 kV for IEC 1000-4-2 Air-Gap Discharge and ±8 kV for Contact Discharge. The ADM3222ARU does not carry this enhanced ±15 kV ESD specification, so the ADM3232EARUZ is preferable for applications requiring robust ESD immunity at the connector interface.
What is the operating supply voltage for both devices?
Both the ADM3232EARUZ and the ADM3222ARU operate from a single 3.3 V supply (nominally 3.0 V to 3.6 V), making them suitable for 3.3 V logic systems that require RS-232 level translation.
How many drivers and receivers do the ADM3232EARUZ and ADM3222ARU integrate?
Both devices integrate two RS-232 drivers and two RS-232 receivers, providing a dual-channel interface suitable for typical serial ports requiring TXD, RXD, and hardware handshake lines.
Can the ADM3232EARUZ be used as a drop-in replacement for the ADM3222ARU?
Because both parts share the 20-lead TSSOP package, 3.3 V supply, 460 kbps data rate, and two-driver/two-receiver configuration, the ADM3232EARUZ can generally serve as a functional replacement for the ADM3222ARU while adding enhanced ±15 kV ESD protection. Final substitution should be validated against the target design's ESD, loading, and timing requirements using the official Analog Devices datasheets.