Overview
The ADM560JR, produced by Analog Devices Inc., is an ultralow power RS-232 transmission line driver/receiver designed to meet the EIA-232 standard. It operates from a single +3.3 V power supply, making it ideal for battery and other power-sensitive applications. The device features an on-board dc-to-dc converter that generates ±6.6 V from the input +3.3 V power supply, eliminating the need for dual ±5 V power supplies. This converter includes a voltage doubler and a voltage inverter. The ADM560JR is fabricated using CMOS technology to minimize power consumption and is suitable for use in mixed 3 V/5 V power supply systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Power Supply Voltage | 3.0 to 3.6 | V |
| Power Consumption (Active) | 5 mW | mW |
| Power Consumption (Shutdown) | 0.66 μW | μW |
| Data Rate | Up to 116 kbps | kbps |
| Number of Drivers/Receivers | 4/5 | - |
| Transmitter Input Logic Levels | 3 V or 5 V | V |
| Receiver Input Voltage Range | ±25 V | V |
| Operating Temperature | 0°C to 70°C | °C |
| Package Type | 28-lead SOIC or SSOP | - |
Key Features
- RS-232 compatible with a single +3.3 V power supply.
- On-board dc-to-dc converter generating ±6.6 V from the input +3.3 V power supply.
- Ultralow power consumption: 5 mW active, 0.66 μW in shutdown mode.
- CMOS technology for minimal power dissipation.
- Supports mixed 3 V/5 V power supply systems.
- High level of over-voltage protection and latch-up immunity.
- Active low shutdown and active high receiver enable signal (ADM560JR).
- Two receivers remain active in shutdown mode for peripheral device monitoring (ADM560JR).
Applications
- Battery-powered devices and other power-sensitive applications.
- Notebook PC serial port drivers/receivers.
- Serial port mice and other peripheral devices.
- Mixed 3 V/5 V power supply systems.
Q & A
- What is the power supply voltage range for the ADM560JR?
The ADM560JR operates from a single +3.3 V power supply, with a range of 3.0 to 3.6 V.
- How much power does the ADM560JR consume in active and shutdown modes?
The device consumes 5 mW in active mode and 0.66 μW in shutdown mode.
- What is the data rate supported by the ADM560JR?
The ADM560JR supports data rates up to 116 kbps.
- How many drivers and receivers does the ADM560JR have?
The device has 4 drivers and 5 receivers.
- What logic levels can the transmitter inputs accept?
The transmitter inputs can be driven from either 3 V or 5 V logic levels.
- What is the operating temperature range for the ADM560JR?
The operating temperature range is from 0°C to 70°C.
- What type of package is the ADM560JR available in?
The device is available in 28-lead SOIC or SSOP packages.
- Does the ADM560JR have over-voltage protection?
Yes, the device features a high level of over-voltage protection and latch-up immunity.
- How does the shutdown mode work on the ADM560JR?
In shutdown mode, two receivers remain active to allow monitoring of peripheral devices.
- What technology is used to fabricate the ADM560JR?
The device is fabricated using CMOS technology to minimize power consumption.
