Overview
The ADM208ARS, produced by Analog Devices Inc., is a member of the ADM2xx family of RS-232 drivers/receivers. This component is designed to meet the EIA-232-E specifications and is particularly useful in applications where a single 5 V supply is available. It integrates step-up voltage converters and level shifting transmitters and receivers onto the same chip, utilizing CMOS technology to minimize power dissipation.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Package / Case | SSOP-24 | |
| Data Rate | 120 kb/s | |
| Supply Voltage (VCC) | –0.3 V to +6 V | Ta = 25°C, unless otherwise noted |
| Output Voltage Swing | ±9 V | With 5 V supply |
| Input Voltage Range (TIN) | –0.3 V to (VCC + 0.3 V) | |
| Input Voltage Range (RIN) | ±30 V | |
| Output Resistance | 300 Ω | VCC = V+ = V– = 0 V, VOUT= ± 2 V |
| Operating Temperature Range | –40°C to +85°C | |
| Power Dissipation (Low Power Shutdown) | < 5 μW | In shutdown mode |
Key Features
- Meets EIA-232-E specifications using a single 5 V supply
- On-board DC-to-DC converters generating ±10 V supply from 5 V input
- Low power shutdown mode reducing power dissipation to less than 5 μW
- Internal 400 kΩ pull-up resistors on each TTL/CMOS input and internal 5 kΩ pull-down resistors on each RS-232 input
- Enable (EN) function allowing receivers to be placed in a high impedance state when disabled
- Capacitor values from 0.1 μF to 10 μF supported
Applications
- Computers and peripherals
- Modems
- Printers
- Instruments
- Battery-powered systems due to low power shutdown mode
Q & A
- What is the primary function of the ADM208ARS?
The ADM208ARS is an RS-232 driver/receiver designed to meet EIA-232-E specifications using a single 5 V supply.
- What is the data rate supported by the ADM208ARS?
The ADM208ARS supports a data rate of up to 120 kb/s.
- What is the output voltage swing of the ADM208ARS?
The output voltage swing is ±9 V with a 5 V supply.
- What is the operating temperature range of the ADM208ARS?
The operating temperature range is –40°C to +85°C.
- Does the ADM208ARS have a low power shutdown mode?
Yes, the ADM208ARS features a low power shutdown mode that reduces power dissipation to less than 5 μW.
- What type of resistors are integrated on the TTL/CMOS inputs and RS-232 inputs of the ADM208ARS?
Internal 400 kΩ pull-up resistors on each TTL/CMOS input and internal 5 kΩ pull-down resistors on each RS-232 input.
- What is the purpose of the enable (EN) function in the ADM208ARS?
The enable (EN) function allows the receivers to be placed in a high impedance state when disabled.
- What are some common applications for the ADM208ARS?
Common applications include computers, peripherals, modems, printers, instruments, and battery-powered systems.
- What type of package is the ADM208ARS available in?
The ADM208ARS is available in a 24-lead SSOP package.
- Does the ADM208ARS support various capacitor values?
Yes, it supports capacitor values from 0.1 μF to 10 μF.
