Overview
The ADM3232EARNZ-REEL7, produced by Analog Devices Inc., is a high-speed, 2-channel RS-232/V.28 interface device. It operates from a single 3.3 V power supply, making it ideal for battery-powered portable instruments due to its low power consumption. This transceiver is designed to handle electrically harsh environments and frequent plugging/unplugging of RS-232 cables, thanks to its robust ESD protection.
Key Specifications
| Parameter | Rating/Value | Notes |
|---|---|---|
| Data Rate | Up to 460 kbps | |
| Supply Voltage (VCC) | 3.3 V ± 0.3 V | |
| ESD Protection (RS-232 I/O Pins) | ±15 kV (Air Gap), ±8 kV (Contact Discharge) | Compliant with IEC 1000-4-2 |
| Number of Transmitters/Receivers | 2 Tx, 2 Rx | |
| Input/Output Levels | TTL/CMOS (Inputs), RS-232 (Outputs) | |
| Charge Pump Capacitors | 4 external 0.1 μF capacitors | For voltage doubler/inverter |
| Operating Temperature | –40°C to +85°C | |
| Package Types | 16-lead narrow and wide SOIC, 16-lead TSSOP |
Key Features
- High-speed data rate up to 460 kbps
- Compliance with EIA-232E and ITU-T V.28 specifications
- Robust ESD protection: ±15 kV air gap discharge, ±8 kV contact discharge
- Low power consumption, suitable for battery-powered devices
- CMOS technology for minimal power dissipation
- Four external 0.1 μF charge pump capacitors for voltage doubler/inverter
- TTL/CMOS input levels and RS-232 output levels
- Internal 5 kΩ pull-down resistors on RS-232 inputs
- Strict emission control
Applications
- General-purpose RS-232 data links
- Portable instruments
- Industrial and telecom diagnostic ports
- Handsets
- Environments with frequent plugging/unplugging of RS-232 cables
- Electrically harsh environments
Q & A
- What is the maximum data rate of the ADM3232E?
The ADM3232E operates at data rates up to 460 kbps.
- What type of ESD protection does the ADM3232E offer?
The ADM3232E offers ±15 kV ESD protection against air gap discharge and ±8 kV against contact discharge, compliant with IEC 1000-4-2.
- What is the power supply voltage for the ADM3232E?
The ADM3232E operates from a single 3.3 V power supply.
- How many transmitters and receivers does the ADM3232E have?
The ADM3232E has 2 transmitters and 2 receivers.
- What type of input/output levels does the ADM3232E support?
The ADM3232E supports TTL/CMOS input levels and RS-232 output levels.
- What is the purpose of the external charge pump capacitors?
The four external 0.1 μF charge pump capacitors are used for the voltage doubler/inverter, allowing operation from a single 3.3 V supply.
- What are the typical applications of the ADM3232E?
The ADM3232E is used in general-purpose RS-232 data links, portable instruments, industrial and telecom diagnostic ports, and handsets.
- What is the operating temperature range of the ADM3232E?
The ADM3232E operates in the temperature range of –40°C to +85°C.
- In what package types is the ADM3232E available?
The ADM3232E is available in 16-lead narrow and wide SOIC packages, as well as a 16-lead TSSOP package.
- Why is the ADM3232E suitable for battery-powered devices?
The ADM3232E is suitable for battery-powered devices due to its low power consumption and use of CMOS technology to minimize power dissipation.
