Overview
The ADM3490EARZ is a 3.3 V, low-power, full-duplex data transceiver designed for multipoint bus transmission lines, complying with TIA/EIA standards RS-485 and RS-422. Manufactured by Analog Devices Inc., this component is suitable for balanced data transmission and is particularly useful in applications requiring high-speed data communication.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Guaranteed Data Rate | 10 Mbps | Mbps | |
| Supply Voltage | 3.3 V | V | |
| Duplex Mode | Full-duplex | ||
| Receiver Input Impedance | 12 kΩ | kΩ | Allows up to 32 transceivers on the bus |
| ESD Protection on Bus Pins | ±15 kV | kV | |
| Common-mode Input Range | -7 V to +12 V | V | |
| Receiver Hysteresis | 50 mV | mV | |
| Package Type | 8-lead SOIC_N | ||
| Thermal Shutdown | Yes | Prevents excessive power dissipation | |
| Low Power Shutdown Current | Typically 2 nA | nA | In shutdown mode |
Key Features
- Slew rate limited drivers to reduce EMI and reflections from improperly terminated buses.
- Fail-safe receiver design ensuring a logic high output when inputs are floating.
- Thermal shutdown circuit to prevent excessive power dissipation caused by bus contention or output shorting.
- Low power shutdown mode with a typical supply current of 2 nA.
- Industry-standard 75176 pinout.
- High-Z outputs when disabled or powered off.
- ±15 kV ESD protection on bus pins.
Applications
- Power and energy metering.
- Telecommunications.
- EMI-sensitive systems.
- Industrial control systems.
- Local area networks (LANs).
Q & A
- What is the guaranteed data rate of the ADM3490EARZ?
The guaranteed data rate is up to 10 Mbps.
- What is the supply voltage for the ADM3490EARZ?
The supply voltage is 3.3 V.
- Does the ADM3490EARZ support full-duplex communication?
Yes, it supports full-duplex communication.
- How many transceivers can be connected on the bus with the ADM3490EARZ?
Up to 32 transceivers can be connected on the bus due to the 12 kΩ receiver input impedance.
- What is the ESD protection level on the bus pins of the ADM3490EARZ?
The ESD protection level is ±15 kV.
- What is the common-mode input range of the ADM3490EARZ?
The common-mode input range is -7 V to +12 V.
- Does the ADM3490EARZ have thermal shutdown protection?
Yes, it has thermal shutdown protection to prevent excessive power dissipation.
- What is the typical current draw in low power shutdown mode?
The typical current draw in low power shutdown mode is 2 nA.
- What package type is the ADM3490EARZ available in?
The ADM3490EARZ is available in an 8-lead SOIC_N package.
- What are some typical applications of the ADM3490EARZ?
Typical applications include power and energy metering, telecommunications, EMI-sensitive systems, industrial control systems, and local area networks.
