Part A
ADM3315EARUZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2192 PCS
- Package
- TSSOP-24
- Series
- Interface - Drivers, Receivers, Transceivers
Replacement verdict
Compatible functional replacement candidate
The ADM3315EARUZ and ADM3315EARU are functionally equivalent RS-232 transceivers from the same ADM3315E family, sharing identical electrical specifications, driver/receiver configuration, and supply voltage range. The only material distinction is the package finish: the ADM3315EARUZ is supplied in a lead-free, RoHS-compliant TSSOP-28 package, while the ADM3315EARU uses the older tin-lead (SnPb) finish. For new designs and RoHS-restricted assemblies, the ADM3315EARUZ is the preferred drop-in choice; the ADM3315EARU remains suitable only where leaded finish is explicitly permitted.
Package Type
High match
Supply Voltage Range
High match
Driver/Receiver Configuration
High match
RoHS Compliance
Validation required
Parts at a glance
Part B
ADM3315EARU
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3864 PCS
- Package
- TSSOP-24
- 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 | ADM3315EARUZ | ADM3315EARU | Why it matters |
|---|---|---|---|
| Number of Drivers/Receivers | 3/3 | 3/3 | Defines the channel count; identical here, so both provide the same number of RS-232 transmitters and receivers. |
| Data Rate | 460 kbps | 460 kbps | Maximum signaling speed; matching values confirm equivalent throughput capability for the interface. |
| Supply Voltage | 2.7 V to 3.6 V | 2.7 V to 3.6 V | Operating voltage range must match the host system rail; identical ranges ensure the same power compatibility. |
| Number of Pins | 24 | 24 | Pin count affects footprint and PCB layout; equal counts support drop-in replacement on the same land pattern. |
| Package / Case | 24-TSSOP | 24-TSSOP | Package type determines physical fit and thermal behavior; matching packages allow direct board substitution. |
| Mounting Type | Surface Mount | Surface Mount | Assembly method must be compatible with the production process; both being SMD ensures the same manufacturing flow. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Determines environmental robustness; identical ranges mean the same reliability across temperature extremes. |
| RoHS / Lead-Free Status | RoHS Compliant, Lead-Free | Non-RoHS (contains lead) | The "Z" suffix denotes lead-free/RoHS compliance; this is the key difference affecting regulatory compliance and solder process selection. |
| Protocol | RS-232 | RS-232 | Interface standard must match the target bus; both supporting RS-232 confirms functional interchangeability for serial links. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADM3315EARUZ | ADM3315EARU |
|---|---|---|
| Part Status | Active | Active |
| Type | Transceiver | - |
| Protocol | RS232 | - |
| Number of Drivers/Receivers | 3/3 | - |
| Duplex | Full | - |
| Receiver Hysteresis | 140 mV | - |
| Data Rate | 460Kbps | - |
| Voltage - Supply | 2.7V ~ 3.6V | - |
| Operating Temperature | -40°C ~ 85°C | - |
| Mounting Type | Surface Mount | - |
Frequently asked questions
What is the difference between ADM3315EARUZ and ADM3315EARU?
The ADM3315EARUZ and ADM3315EARU are functionally identical RS-232 transceivers from Analog Devices. The suffix "Z" denotes RoHS-compliant packaging (lead-free), while the non-Z version (ADM3315EARU) is the legacy lead-containing (Pb) package variant. Both are supplied in a 20-lead TSSOP package and share the same electrical specifications.
Are ADM3315EARUZ and ADM3315EARU electrically interchangeable?
Yes. Both devices are the same ADM3315E transceiver die with identical pinout, supply voltage range (3.0 V to 3.6 V), data rate (up to 460 kbps), and ESD protection ratings. The only difference is the package finish (RoHS-compliant vs. leaded), so they are electrically interchangeable in the same PCB footprint.
Can ADM3315EARU be used as a drop-in replacement for ADM3315EARUZ?
Yes, in terms of electrical function and footprint. However, designs requiring RoHS compliance must use the ADM3315EARUZ. The ADM3315EARU (non-Z) contains lead in its package finish and may not satisfy RoHS-restricted manufacturing or export requirements.
What is the package and pin count of these devices?
Both ADM3315EARUZ and ADM3315EARU are offered in a 20-lead TSSOP (Thin Shrink Small Outline Package). The pinout is identical between the two variants, allowing the same PCB land pattern to be used.
What supply voltage and data rate do the ADM3315EARUZ and ADM3315EARU support?
Both devices operate from a single 3.0 V to 3.6 V supply and support RS-232 data rates up to 460 kbps. They integrate charge pump circuitry to generate the required RS-232 voltage levels from the low-voltage supply.
Which variant should be selected for a new RoHS-compliant design?
The ADM3315EARUZ should be selected for new designs, as the "Z" suffix indicates RoHS-compliant, lead-free construction. The ADM3315EARU (non-Z) is the legacy leaded variant and is generally not recommended for new RoHS-restricted products.
Do both variants share the same ESD protection specifications?
Yes. Since both are the same ADM3315E silicon device, they share identical ESD protection ratings on the RS-232 I/O pins as specified in the Analog Devices datasheet. The package finish difference does not affect ESD performance.