Overview
The ADM233LAN is a +5 V powered CMOS RS-232 driver/receiver produced by Analog Devices Inc. This component is part of the ADM2xx family, designed to meet all EIA-232-E and V.28 specifications, making it suitable for various serial communication applications. The ADM233LAN is particularly noted for its space-saving design, as the charge pump capacitors are molded into the package, which is beneficial in applications where board space is limited.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Power Supply Voltage (VCC) | –0.3 V to +6 V | TA = 25°C |
| Data Rate | Up to 120 kbps | |
| RS-232 Input Voltage Range | –30 V to +30 V | TIN = 0 V |
| RS-232 Input Threshold Low | 0.8 V to 1.2 V | |
| RS-232 Input Threshold High | 1.6 V to 2.4 V | |
| RS-232 Input Hysteresis | 0.65 V | |
| RS-232 Input Resistance | 3 kΩ to 7 kΩ | TA = 0°C to 85°C |
| TTL/CMOS Output Voltage Low (VOL) | 0.4 V | IOUT = –1.0 mA |
| TTL/CMOS Output Voltage High (VOH) | 3.5 V | IOUT = –1.0 mA |
| Output Enable Time (TEN) | 250 ns | CL = 150 pF |
| Output Disable Time (TDIS) | 50 ns | RL = 1 kΩ |
| Propagation Delay | 0.3 µs | RS-232 to TTL Transition |
| Shutdown Supply Current | 1 µA to 10 µA |
Key Features
- Single 5 V Power Supply: The ADM233LAN operates on a single 5 V power supply, making it energy-efficient and suitable for a wide range of applications.
- Compliance with EIA-232-E and V.28 Specifications: Meets all the necessary standards for RS-232 communications, ensuring compatibility and reliability.
- High Data Rate: Supports data rates up to 120 kbps, which is sufficient for most serial communication needs.
- Integrated Charge Pump Capacitors: The charge pump capacitors are molded into the package, reducing the need for external components and saving board space.
- Low Power Shutdown Mode: Features a low power shutdown mode that reduces power dissipation to less than 5 µW, making it suitable for battery-powered systems.
- Enable Function: Allows receivers to be disabled, placing their outputs in a high impedance state, which is useful for sharing common lines or connecting to microprocessor data buses.
Applications
- Serial Communication Systems: Ideal for applications requiring RS-232 interfaces, such as industrial control systems, medical devices, and point-of-sale terminals.
- Embedded Systems: Suitable for use in embedded systems where space and power efficiency are critical.
- Industrial Automation: Used in industrial automation for reliable serial communication between devices.
- Battery-Powered Devices: The low power shutdown mode makes it an excellent choice for battery-powered devices where power conservation is essential.
Q & A
- What is the power supply voltage for the ADM233LAN?
The ADM233LAN operates on a single 5 V power supply.
- What are the RS-232 input voltage thresholds for the ADM233LAN?
The RS-232 input thresholds are between 0.8 V and 1.2 V for low and between 1.6 V and 2.4 V for high.
- What is the maximum data rate supported by the ADM233LAN?
The ADM233LAN supports data rates up to 120 kbps.
- Does the ADM233LAN have integrated charge pump capacitors?
- What is the shutdown supply current for the ADM233LAN?
- Can the ADM233LAN be used in battery-powered systems?
- What is the purpose of the enable function in the ADM233LAN?
- What are some common applications for the ADM233LAN?
- Does the ADM233LAN meet EIA-232-E and V.28 specifications?
- What is the propagation delay for the ADM233LAN?
