Part A
ADM3202ARUZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7356 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 ADM3202ARUZ and ADM3222ARU are both dual-channel RS-232 transceivers in a 20-lead TSSOP package with an integrated charge pump, making them strong functional replacement candidates. The ADM3222ARU adds an enhanced shutdown mode with lower standby current, so designers should validate power-down behavior and current budget in the target application before substituting.
Interface Protocol
High match
Package Type
High match
Supply Voltage Range
High match
Shutdown Current
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 | ADM3202ARUZ | ADM3222ARU | Why it matters |
|---|---|---|---|
| Number of Drivers/Receivers | 2/2 | 2/2 | Both are dual transceivers, so the channel count is functionally equivalent for RS-232 interfacing. |
| Data Rate | 460 kbps | 460 kbps | Maximum signaling speed determines compatibility with the host UART and cable length requirements. |
| Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | The wide supply range allows operation from both 3.3 V and 5 V logic rails. |
| Number of Charge Pump Capacitors | 4 (external) | 4 (external) | External charge pump capacitors are required to generate the RS-232 voltage levels; the count affects board layout. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Industrial temperature range ensures reliable operation in harsh environments. |
| Package / Mounting | 20-TSSOP (Surface Mount) | 20-TSSOP (Surface Mount) | Identical package and footprint allow drop-in replacement on the same PCB layout. |
| Receiver Input Voltage Range | ±30 V | ±30 V | Wide receiver input range provides robust RS-232 protection against overvoltage faults. |
| Shutdown / Enable Feature | No shutdown pin | Shutdown and enable pins | The ADM3222ARU offers shutdown/enable control for power savings, which the ADM3202ARUZ lacks; this affects power management design. |
| Typical Supply Current | ~3 mA | ~3 mA | Low quiescent current is important for battery-powered and power-sensitive applications. |
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 | ADM3202ARUZ | 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 | 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 the ADM3222ARU?
Both are dual-channel RS-232 transceivers in a 20-lead TSSOP package, but the ADM3222ARU includes an internal charge pump that generates the RS-232 voltage levels from a single 3.3 V supply, while the ADM3202ARUZ requires an external charge pump or dual supply rails. The ADM3222ARU also features a shutdown mode that reduces supply current to typically 1 µA, whereas the ADM3202ARUZ does not offer this low-power shutdown function.
Are the ADM3202ARUZ and ADM3222ARU pin-compatible?
No. Although both devices are housed in a 20-lead TSSOP package, their pin functions differ. The ADM3222ARU integrates charge pump capacitors and shutdown control on specific pins, while the ADM3202ARUZ uses those pins for external charge pump connections and different control signals. A direct drop-in replacement is not possible without PCB layout changes.
What supply voltage do the ADM3202ARUZ and ADM3222ARU require?
Both devices operate from a single 3.3 V supply (typically 3.0 V to 3.6 V). The ADM3222ARU generates the required positive and negative RS-232 output levels internally via its on-chip charge pump, while the ADM3202ARUZ requires external charge pump circuitry to produce the same RS-232 voltage levels.
How many RS-232 drivers and receivers does each device provide?
Both the ADM3202ARUZ and the ADM3222ARU are dual-channel transceivers, each providing two RS-232 drivers and two RS-232 receivers. They are suitable for applications requiring two full-duplex RS-232 communication channels.
Does the ADM3222ARU support a low-power shutdown mode?
Yes. The ADM3222ARU includes an active-low shutdown (SHDN) input that places the device in a low-power standby mode, reducing supply current to typically 1 µA. The ADM3202ARUZ does not provide a shutdown mode, so it cannot achieve this level of power reduction.
What data rate do the ADM3202ARUZ and ADM3222ARU support?
Both devices are specified for RS-232 data rates up to 200 kbps, which is sufficient for standard RS-232 communication. The actual achievable data rate depends on the external charge pump configuration (for the ADM3202ARUZ) and the load capacitance on the RS-232 lines.
Can the ADM3202ARUZ and ADM3222ARU operate over the industrial temperature range?
Yes. Both devices are specified for operation over the industrial temperature range of −40 °C to +85 °C, making them suitable for industrial and embedded applications. The ADM3222ARU's integrated charge pump and shutdown feature are also specified across this temperature range.
Which device is better suited for space-constrained designs?
The ADM3222ARU is generally better suited for space-constrained designs because its integrated charge pump eliminates the need for external charge pump capacitors and associated circuitry, reducing overall board area. The ADM3202ARUZ requires external charge pump components, which increases the total footprint and component count.