Overview
The ADM3232EARWZ-REEL is a 3.3 V, RS-232 line driver/receiver produced by Analog Devices Inc. This device is designed for high-speed data transmission and is particularly suited for operation in electrically harsh environments or where RS-232 cables are frequently plugged and unplugged. It operates from a single 3.3 V power supply, making it ideal for battery-powered portable instruments due to its low power consumption. The ADM3232E conforms to the EIA-232E and ITU-T V.28 specifications and supports data rates up to 460 kbps.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Power Supply Voltage (VCC) | 3.3 V ± 0.3 V | |
| Input Voltage Range (RxIN) | −30 V to +30 V | |
| Input Threshold Low (RxIN) | 0.6 V to 1.2 V | |
| Input Threshold High (RxIN) | 1.6 V to 2.4 V | |
| Input Hysteresis (RxIN) | 0.4 V | |
| Input Resistance (RxIN) | 3 kΩ to 5 kΩ to 7 kΩ | |
| Output Voltage Swing (TxOUT) | ±5.0 V to ±5.2 V (RS-232), ±3.7 V (RS-562) | VCC = 3.3 V, all transmitter outputs loaded with 3 kΩ to ground |
| Transmitter Output Resistance | 300 Ω | VCC = 0 V, VOUT = ±2 V |
| Maximum Data Rate | 460 kbps | VCC = 3.3 V, RL = 3 kΩ to 7 kΩ, CL = 50 pF to 1000 pF |
| ESD Protection (RS-232 I/O Pins) | ±15 kV Human body model, ±15 kV IEC 1000-4-2 air discharge, ±8 kV IEC 1000-4-2 contact discharge |
Key Features
- High-Speed Data Transmission: Supports data rates up to 460 kbps.
- Low Power Consumption: Ideal for battery-powered portable instruments.
- ESD Protection: ±15 kV ESD protection on RS-232 input/output pins, compliant with IEC 1000-4-2 requirements.
- Single 3.3 V Power Supply: Uses four external 0.1 μF charge pump capacitors for voltage doubler/inverter.
- CMOS Technology: Minimizes power dissipation for maximum battery life.
- Compliance with Standards: Conforms to EIA-232E and ITU-T V.28 specifications.
- Multiple Package Options: Available in 16-lead narrow and wide SOIC, and TSSOP packages.
Applications
- Portable Instruments: Ideal for battery-powered devices due to low power consumption.
- General-Purpose RS-232 Data Links: Suitable for various data transmission needs.
- Printers and Palmtop Computers: Used in devices requiring high-speed RS-232 communication.
- PDAs and Other Handheld Devices: Supports the data transmission requirements of these devices.
Q & A
- What is the operating voltage of the ADM3232EARWZ-REEL?
The ADM3232EARWZ-REEL operates from a single 3.3 V power supply.
- What is the maximum data rate supported by the ADM3232EARWZ-REEL?
The device supports data rates up to 460 kbps.
- What level of ESD protection does the ADM3232EARWZ-REEL offer?
The device offers ±15 kV ESD protection on RS-232 input/output pins, compliant with IEC 1000-4-2 requirements.
- What are the key features of the ADM3232EARWZ-REEL?
Key features include high-speed data transmission, low power consumption, ESD protection, single 3.3 V power supply, and compliance with EIA-232E and ITU-T V.28 specifications.
- In what types of applications is the ADM3232EARWZ-REEL commonly used?
It is commonly used in portable instruments, general-purpose RS-232 data links, printers, palmtop computers, PDAs, and other handheld devices.
- What is the input voltage range for the receiver inputs (RxIN) of the ADM3232EARWZ-REEL?
The input voltage range for the receiver inputs is −30 V to +30 V.
- What is the output voltage swing for the transmitter outputs (TxOUT) of the ADM3232EARWZ-REEL?
The output voltage swing is ±5.0 V to ±5.2 V for RS-232 and ±3.7 V for RS-562, with VCC = 3.3 V and all transmitter outputs loaded with 3 kΩ to ground.
- Does the ADM3232EARWZ-REEL use CMOS technology?
Yes, the device uses CMOS technology to minimize power dissipation and maximize battery life.
- What types of packages are available for the ADM3232EARWZ-REEL?
The device is available in 16-lead narrow and wide SOIC, and TSSOP packages.
- How does the ADM3232EARWZ-REEL handle unconnected inputs?
Unconnected inputs are pulled to 0 V by an internal 5 kΩ pull-down resistor, resulting in a Logic 1 output level.
