MAX3483AE Datasheet, PDF (1/19 Pages) Maxim Integrated Products – +3.3V-Powered, ±20kV ESD-Protected

MAX3483AE/MAX3485AE/
MAX3488AE/MAX3490AE/
MAX3491AE
+3.3V-Powered, ±20kV ESD-Protected,
20Mbps and Slew-Rate-Limited
RS-485/RS-422 Transceivers
General Description
Devices in the MAX3483AE family (MAX3483AE/
MAX3485AE/MAX3488AE/MAX3490AE/MAX3491AE)
are ±20kV ESD-protected RS-485/422 transceivers,
optimized for extended cable runs in noisy environments.
All devices operate from a single 3.3V supply.
The MAX3483AE and MAX3485AE are half-duplex transceivers.
The MAX3488AE, MAX3490AE, and MAX3491AE are
full-duplex transceivers. All receivers feature a unit-load
input impedance, allowing up to 32 devices on a single
bus. Each transceiver includes a fail-safe receiver, ensuring
that the receiver output (RO) is high when inputs are
shorted, open, or connected to a tri-state bus.
All devices feature enhanced electrostatic discharge (ESD)
protection. All transmitter outputs and receiver inputs are
protected to ±20kV HBM ESD, ±15kV Air-Gap ESD and
±8kV Contact ESD in accordance to IEC 61000-4-2.
The MAX3483AE, MAX3485AE, MAX3488AE, and
MAX3490AE are available in industry standard 8-pin SO
package, while the MAX3491AE is available in a 14-pin
SO package.
Benefits and Features
● Integrated Protection Increases Robustness
• High ESD Protection
±20kV HBM ESD per JEDEC JS-001-2012
±15kV Air Gap per IEC 61000-4-2
±8kV Contact ESD per IEC 61000-4-2
• Short-Circuit Protected Outputs
• True Fail-Safe Receiver Prevents False Transition
on Receiver Input Short or Open Events
• Hot-Swap Capability Eliminates False Transitions
During Power-Up or Hot Insertion
● High-Speed Data Rates up to 20Mbps
● Up to -40°C to +125°C Operating Temperature
● Allows Up to 128 Transceivers on the Bus
Applications
● Industrial-Control Local Area Networks
● Transceivers for EMI-Sensitive Applications
● Telecommuncations
Ordering Information appears at end of data sheet.
Functional Diagram
MAX3483AE
MAX3485AE
RO
R
A
RO
RO
R
B
RE
RE
A
R
B
VCC
RE
B
SHUTDOWN
A
DE
DE
DI
D
DI
D
VCC
DE
Z
DI
Y
SHUTDOWN
Z
D
Y
MAX3488AE
MAX3490AE
MAX3491AE
19-8506; Rev 0; 3/16