Overview
The ADM3074EARZ is a 3.3 V, low-power data transceiver designed by Analog Devices Inc. It is part of the ADM307xE series, which complies with TIA/EIA standards for RS-485 and RS-422 communication. This device is suitable for full- and half-duplex communication on multipoint bus transmission lines. It features 15 kV ESD protection on the RS-485 input/output pins, making it robust against electrical surges. The ADM3074EARZ is housed in an 8-lead standard small outline package (SOIC) and operates over a temperature range of -40°C to +125°C.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Maximum Data Rate | - | - | 500 kbps | - | - | - |
| Propagation Delay, Low-to-High Level | tDPLH | 250 ns | - | 1500 ns | ns | CL = 50 pF, RL = 54 Ω |
| Propagation Delay, High-to-Low Level | tDPHL | 250 ns | - | 1500 ns | ns | CL = 50 pF, RL = 54 Ω |
| Rise Time/Fall Time | tDR/tDF | 350 ns | - | 1600 ns | ns | CL = 50 pF, RL = 54 Ω |
| Differential Driver Output Skew | tDSKEW | - | - | 200 ns | ns | CL = 50 pF, RL = 54 Ω |
| Enable to Output High | tDZH | - | - | 2500 ns | ns | - |
| Common-mode Input Range | - | - | -7 V to +12 V | - | - | - |
| Temperature Range | - | -40°C | - | +125°C | °C | - |
Key Features
- Compliance with TIA/EIA standards for RS-485 and RS-422
- 15 kV ESD protection on RS-485 input/output pins
- Half- and full-duplex options
- True fail-safe receiver inputs
- Up to 256 nodes on the bus
- Hot-swap input structure on DE and RE pins
- Reduced slew rates for low EMI
- Low power shutdown current (except for ADM3071E, ADM3074E, ADM3077E)
- Outputs high-Z when disabled or powered off
- Common-mode input range: -7 V to +12 V
- Thermal shutdown and short-circuit protection
- Available in 8-lead and 14-lead narrow SOIC packages
Applications
- Power/energy metering
- Industrial control
- Lighting systems
- Telecommunications
- Security systems
- Instrumentation
Q & A
- What is the maximum data rate of the ADM3074EARZ?
The maximum data rate of the ADM3074EARZ is 500 kbps.
- What type of ESD protection does the ADM3074EARZ have?
The ADM3074EARZ has ±15 kV ESD protection on the RS-485 input/output pins.
- What are the operating temperature ranges for the ADM3074EARZ?
The operating temperature range for the ADM3074EARZ is -40°C to +125°C.
- Does the ADM3074EARZ support half- and full-duplex communication?
- How many nodes can be connected on the bus using the ADM3074EARZ?
- What is the common-mode input range of the ADM3074EARZ?
- Does the ADM3074EARZ have thermal shutdown and short-circuit protection?
- In what package types is the ADM3074EARZ available?
- What are some typical applications of the ADM3074EARZ?
- How does the hot-swap input structure on DE and RE pins work?
