Overview
The MAX490ESA+T is a full-duplex, low-power transceiver designed for RS-485 and RS-422 communication. It is manufactured by Analog Devices Inc./Maxim Integrated. This transceiver is notable for its low supply current, drawing between 120µA and 500µA when unloaded or fully loaded with disabled drivers. The device features short-circuit current-limited drivers and thermal shutdown circuitry to protect against excessive power dissipation. Additionally, the receiver input includes a fail-safe feature that ensures a logic-high output if the input is an open circuit. This makes it suitable for a variety of applications, including low-power RS-485 and RS-422 transceivers, level translators, and EMI-sensitive applications.
Key Specifications
| Attribute | Value |
|---|---|
| Protocol | RS422, RS485 |
| Number of Drivers/Receivers | 1/1 |
| Duplex | Full |
| Supply Voltage | 4.75V ~ 5.25V |
| Data Rate | 2.5Mbps |
| Package | 8-SOIC (0.154', 3.90mm Width) |
| Operating Temperature | -40°C ~ 85°C |
| ESD Protection | ±15 kV (HBM) |
| Receiver Hysteresis | 70 mV |
| Mounting Type | Surface Mount |
Key Features
- Low-power operation: Draws between 120µA and 500µA of supply current when unloaded or fully loaded with disabled drivers.
- Short-circuit current-limited drivers and thermal shutdown circuitry for protection against excessive power dissipation.
- Fail-safe receiver input that guarantees a logic-high output if the input is an open circuit.
- Slew-rate-limited drivers to reduce electromagnetic interference (EMI).
- Full-duplex operation for simultaneous transmission and reception.
- ±15 kV ESD protection for robustness against electrostatic discharge.
Applications
- Low-power RS-485 and RS-422 transceivers.
- Level translators.
- Transceivers for EMI-sensitive applications.
- Industrial-control local area networks.
Q & A
- What is the MAX490ESA+T used for?
The MAX490ESA+T is used for RS-485 and RS-422 communication in various applications, including low-power transceivers, level translators, and EMI-sensitive applications.
- What is the supply voltage range for the MAX490ESA+T?
The supply voltage range for the MAX490ESA+T is 4.75V to 5.25V).
- What is the data rate of the MAX490ESA+T?
The data rate of the MAX490ESA+T is 2.5Mbps).
- What type of package does the MAX490ESA+T come in?
The MAX490ESA+T comes in an 8-SOIC package).
- What is the operating temperature range of the MAX490ESA+T?
The operating temperature range of the MAX490ESA+T is -40°C to 85°C).
- Does the MAX490ESA+T have ESD protection?
Yes, the MAX490ESA+T has ±15 kV ESD protection).
- What is the receiver hysteresis of the MAX490ESA+T?
The receiver hysteresis of the MAX490ESA+T is 70 mV).
- Is the MAX490ESA+T RoHS compliant?
Yes, the MAX490ESA+T is RoHS compliant).
- What is the fail-safe feature of the MAX490ESA+T receiver input?
The fail-safe feature of the MAX490ESA+T receiver input guarantees a logic-high output if the input is an open circuit).
- Does the MAX490ESA+T support full-duplex operation?
Yes, the MAX490ESA+T supports full-duplex operation).
