Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Supply | 3.3 V |
| Data rate | Up to 460 kbps |
| Channels | 2 transmitters / 2 receivers |
| Standard | EIA-232E / ITU-T V.28 |
| ESD on RS-232 I/O | ±8 kV contact, ±15 kV air-gap |
| Charge-pump capacitors | Four external 0.1 µF capacitors |
| Package | 16-lead SOIC_N, R-16 |
| Operating temperature | −40°C to +85°C |
Product Overview
ADM3232EARNZ-REEL7 is a dual-channel 3.3 V RS-232 transceiver with two transmitters and two receivers. The E-suffixed family has a defined high-ESD interface rating on the RS-232 I/O: ±8 kV contact discharge and ±15 kV air-gap discharge.
An internal voltage doubler and inverter generate the RS-232 rails from the 3.3 V supply using four external 0.1 µF capacitors. The ARNZ code uses the 16-lead narrow SOIC package.
Key Features
- Two Tx and two Rx channels at up to 460 kbps.
- Single 3.3 V supply operation.
- ±15 kV air-gap and ±8 kV contact ESD protection on RS-232 I/O.
- 16-lead SOIC_N package.
Functional Highlights
The ESD rating is useful for cable-accessible interfaces, but it does not replace connector-level protection or system compliance testing.
The charge pump allows a 3.3 V system to generate compliant RS-232 levels without a separate bipolar supply.
Application Fit
- General-purpose RS-232 links.
- Portable instruments.
- Industrial and telecom diagnostic ports.
- Cable-accessible serial interfaces requiring defined transceiver ESD robustness.
Design Considerations
- Place charge-pump capacitors close to their pins.
- Confirm the exact R-16 footprint before substituting TSSOP or wide-SOIC versions.
- Treat the ESD figures as device test ratings, not a guarantee of system-level connector compliance.
- Check cable quality and timing at the intended serial rate.
Product Status
Manufacturer status: PRODUCTION
Analog Devices currently lists ADM3232EARNZ-REEL7 as PRODUCTION.
Related Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
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