XR3160E Datasheet, PDF (1/23 Pages) Exar Corporation – RS-232/RS-485/RS-422 TRANSCEIVER

XR3160E
RS-232/RS-485/RS-422 TRANSCEIVER WITH 15KV ESD PROTECTION
Sept 2013
Rev. 1.0.0
GENERAL DESCRIPTION
The XR3160 is an advanced multiprotocol transceiver
supporting RS-232, RS-485, and RS-422 serial
standards. Full operation requires only four external
charge pump capacitors.
The RS-485/RS-232 pin selects RS-485 mode when
high and RS-232 mode when low. The HALF/FULL
pin configures the RS-485 modes as either half or full
duplex.
The high speed drivers operate up to 20Mbps in RS-
485/422 modes, and up to 1Mbps in RS-232 mode.
All drivers can be slew limited to 250kbps in any
mode to minimize electromagnetic interference (EMI)
by setting the dedicated SLEW pin low.
All transmitter outputs and receiver inputs feature
robust electrostatic discharge (ESD) protection to
±15kV IEC 61000-4-2 Airgap, ±15kV Human Body
Model (HBM) and ±8kV IEC 61000-4-2 Contact. Each
receiver output has full fail-safe protection to avoid
system lockup, oscillation, or indeterminate states by
defaulting to logic-high output level when the inputs
are open, shorted, or terminated but undriven. No
external biasing resistors are required.
The RS-232 receiver inputs include a 5k: pull-down
to ground when in RS-232 mode. The RS-485/422
receiver inputs are high impedance (>96k:), allowing
up to 256 devices on a single communication bus
(1/8th unit load).
The XR3160 operates from a single power supply,
3V to 5.5V, with low idle current. The shutdown mode
consumes less than 1µA in low power standby
operation with RS-232 receivers enabled.
FEATURES
x Pin Compatible Upgrade for MAX3160 (20 SSOP)
x IEC Level 4 ESD Protection
I ±15kV IEC 61000-4-2 Air Gap Discharge
I ± 8kV IEC 61000-4-2 Contact Discharge
I ±15kV Human Body Model (HBM)
x 20Mbps RS-485 and 1Mbps RS-232 Data Rates
x Pin-Selectable 250kbps Slew Limiting
x Single Supply Operation from +3V to +5.5V
x 2 Drivers, 2 Receivers RS-232/V.28
x 1 Driver, 1 Receiver RS-485/422
I Full or Half Duplex Configuration
I 1/8th Unit Load, up to 256 receivers on bus
x RS-485/422 Enhanced Receiver Fail-safe for open,
shorted, or terminated but idle inputs
x 10nA Shutdown Supply Current (typical)
TYPICAL APPLICATIONS
x Software Programmable Serial Ports
(RS-232, RS-422, RS-485)
x Embedded and Industrial PCs (IPC)
x Process Control Equipment
x Point-Of-Sales Equipment
x Networking Equipment
x HVAC Controls Equipment
x Building Security and Automation
ORDERING INFORMATION
PART NUMBER
XR3160EIU-F
XR3160ECU-F
PACKAGE
20-pin SSOP
20-pin SSOP
OPERATING TEMPERATURE RANGE
-40°C to +85°C
0°C to +70°C
NOTE: Tape and Reel part numbers are XR3160ExUTR-F, -F = Green / RoHS Compliant
DEVICE STATUS
In Production
In Production
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • [phone] • FAX [phone] • www.exar.com