Overview
The ADM3072EARZ from Analog Devices Inc. is a 3.3V, low-power data transceiver designed for full- and half-duplex communication on multipoint bus transmission lines. It complies with TIA/EIA standards for RS-485 and RS-422, making it suitable for a variety of applications requiring balanced data transmission. The device features ±15kV ESD protection on RS-485 input/output pins and a true fail-safe receiver input structure, eliminating the need for external bias resistors. This ensures that the receiver outputs are in a known state before and after communication.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | ADM3072EARZ |
| Package | 8-SOIC (0.154, 3.90mm Width) |
| Pin Count | 8 |
| Operating Supply Voltage | 3.3V |
| Interface | RS-422, RS-485 |
| Driver Number of Bits | 1 |
| Receiver Number of Bits | 1 |
| Data Rate | Up to 250 kbps |
| Receiver Hysteresis | 100 mV |
| Mode | Half Duplex |
| ESD Protection | ±15 kV |
| Operating Temperature Range | -40°C to +85°C |
| Common-mode Input Range | -7V to +12V |
Key Features
- TIA/EIA RS-485/RS-422 compliant
- ±15kV ESD protection on RS-485 input/output pins
- True fail-safe receiver inputs
- Hot-swap input structure on DE and active-low RE pins
- Outputs high-Z when disabled or powered off
- Common-mode input range from -7V to +12V
- Thermal shutdown and short-circuit protection
- Half duplex communication, slew rate limited
- Driver/receiver enable, low power shutdown
- Supports up to 256 nodes on the bus
- 8-lead standard small outline package (SOIC-N)
Applications
The ADM3072EARZ is versatile and can be used in various applications, including:
- Power and energy metering
- Industrial control systems
- Lighting systems
- Telecommunications
- Security systems
- Instrumentation
Q & A
- What is the operating supply voltage of the ADM3072EARZ?
The operating supply voltage is 3.3V. - What communication protocols does the ADM3072EARZ support?
The device supports RS-422 and RS-485 protocols. - What is the data rate of the ADM3072EARZ?
The data rate is up to 250 kbps. - Does the ADM3072EARZ have ESD protection?
Yes, it has ±15kV ESD protection on RS-485 input/output pins. - What is the operating temperature range of the ADM3072EARZ?
The operating temperature range is from -40°C to +85°C. - How many nodes can the ADM3072EARZ support on the bus?
It can support up to 256 nodes on the bus. - What is the package type of the ADM3072EARZ?
The package type is 8-SOIC (0.154, 3.90mm Width). - Does the ADM3072EARZ have true fail-safe receiver inputs?
Yes, it has true fail-safe receiver inputs. - What is the common-mode input range of the ADM3072EARZ?
The common-mode input range is from -7V to +12V. - Is the ADM3072EARZ suitable for half-duplex communication?
Yes, it is suitable for half-duplex communication.
