Part A
ADM3222ARUZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 1215 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
Replacement verdict
Compatible functional replacement candidate
The ADM3222ARUZ and ADM3222ARU are functionally equivalent RS-232 transceivers from the same manufacturer family, sharing identical core electrical specifications, package footprint, and pinout. The primary distinction is the RoHS compliance status denoted by the "Z" suffix, making the ADM3222ARUZ the environmentally compliant variant suitable for drop-in substitution in most designs, subject to verification of the specific ordering code requirements.
Package Type
High match
Pin Configuration
High match
Electrical Specifications
High match
RoHS Compliance
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 | ADM3222ARUZ | ADM3222ARU | Why it matters |
|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Same manufacturer ensures consistent design, documentation, and quality standards. |
| Series | ADM3222 | ADM3222 | Identical series indicates the same core architecture and functional family. |
| Function | RS-232 Transceiver (2 drivers / 2 receivers) | RS-232 Transceiver (2 drivers / 2 receivers) | Matching driver/receiver count confirms functional interchangeability in serial interface designs. |
| Data Rate | 200 kbps | 200 kbps | Same maximum data rate ensures equivalent throughput capability for the application. |
| Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | Identical supply range allows the parts to be used in the same power domains. |
| Number of Pins | 20 | 20 | Same pin count supports drop-in replacement on the same PCB footprint. |
| Package / Case | 20-TSSOP | 20-TSSOP | Identical package ensures mechanical and footprint compatibility. |
| Mounting Type | Surface Mount | Surface Mount | Both are surface-mount devices, suitable for the same assembly process. |
| RoHS / Lead-Free Status | RoHS Compliant, Lead-Free (Z suffix) | Non-RoHS / Contains Lead (no Z suffix) | The Z suffix denotes lead-free/RoHS compliance; this is the key difference affecting regulatory and environmental compliance. |
| Packaging / Ordering Suffix | Z = RoHS-compliant tube/reel option | Standard (non-Z) ordering code | Different ordering suffixes indicate distinct compliance and packaging variants, which matters for procurement and BOM control. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADM3222ARUZ | 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 is the difference between ADM3222ARUZ and ADM3222ARU?
The ADM3222ARUZ and ADM3222ARU are both Analog Devices RS-232 transceivers in a 20-lead TSSOP package. The suffix "Z" on ADM3222ARUZ denotes RoHS-compliant lead-free construction, while ADM3222ARU is the non-RoHS (leaded) version. Functionally and electrically they are the same device; the difference is packaging/environmental compliance.
Are ADM3222ARUZ and ADM3222ARU electrically and functionally interchangeable?
Yes. Both parts share the same datasheet specifications: dual RS-232 drivers and receivers, charge pump, and 20-lead TSSOP pinout. The only documented distinction is the RoHS/lead-free status indicated by the "Z" suffix, so they are functionally interchangeable in the same PCB footprint.
What is the pinout and package of these devices?
Both ADM3222ARUZ and ADM3222ARU are supplied in a 20-lead TSSOP (RU-20) package with an identical pin assignment, including the two RS-232 drivers, two RS-232 receivers, charge pump capacitors, and VCC/GND pins. Because the pinout is identical, no layout change is required when substituting one for the other.
What supply voltage and data rate do the ADM3222ARUZ and ADM3222ARU support?
Both devices operate from a single +3.0 V to +5.5 V supply and support RS-232 data rates up to 200 kbps, consistent with the ADM3222 datasheet. The on-chip charge pump generates the required RS-232 voltage levels from the single supply.
Does the "Z" suffix affect the manufacturer part number ordering or availability?
The "Z" suffix is an Analog Devices RoHS-compliance designator. ADM3222ARUZ is the RoHS-compliant ordering code, while ADM3222ARU is the legacy non-RoHS code. Customers with RoHS-restricted designs should order the ADM3222ARUZ variant; both are listed under the same ADM3222 datasheet.
Can ADM3222ARU be used as a drop-in replacement for ADM3222ARUZ?
Electrically and mechanically yes, since both share the same die, pinout, and TSSOP-20 footprint. However, if the assembly is subject to RoHS or lead-free process requirements, ADM3222ARU (non-RoHS) may not satisfy compliance, so ADM3222ARUZ should be used in those cases.
What are the typical applications for the ADM3222ARUZ and ADM3222ARU?
Both are dual RS-232 transceivers intended for portable and battery-powered equipment, notebook and palmtop computers, and other systems requiring RS-232 communication from a single 3.0 V to 5.5 V supply. Their low-power charge pump and shutdown capability suit space- and power-constrained designs.