MAX3280E_13 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – ±15kV ESD-Protected 52Mbps, 3V to 5.5V, SOT23 RS-485/RS-422 True Fail-Safe Receivers

MAX3280E/MAX3281E/
MAX3283E/MAX3284E
±15kV ESD-Protected 52Mbps, 3V to 5.5V, SOT23
RS-485/RS-422 True Fail-Safe Receivers
General Description
The MAX3280E/MAX3281E/MAX3283E/MAX3284E are
single receivers designed for RS-485 and RS-422 com-
munication. These devices guarantee data rates up to
52Mbps, even with a 3V power supply. Excellent propa-
gation delay (15ns max) and package-to-package
skew time (8ns max) make these devices ideal for mul-
tidrop clock distribution applications.
The MAX3280E/MAX3281E/MAX3283E/MAX3284E
have true fail-safe circuitry, which guarantees a logic-
high receiver output when the receiver inputs are
opened or shorted. The receiver output will be a logic
high if all transmitters on a terminated bus are disabled
(high impedance). These devices feature 1/4-unit-load
receiver input impedance, allowing up to 128 receivers
on the same bus.
The MAX3280E is a single receiver available in a 5-pin
SOT23 package. The MAX3281E/MAX3283E single
receivers have a receiver enable (EN or EN) function
and are offered in a 6-pin SOT23 package. The
MAX3284E features a voltage logic pin that allows com-
patibility with low-voltage logic levels, as in digital
FPGAs/ASICs. On the MAX3284E, the voltage threshold
for a logic high is user-defined by setting V_L in the
range from 1.65V to V_CC. The MAX3284E is also
offered in a 6-pin SOT23 package.
Features
o ESD Protection:
±15kV Human Body Model
±6kV IEC 1000-4-2, Contact Discharge
±12kV IEC 1000-4-2, Air-Gap Discharge
o Guaranteed 52Mbps Data Rate
o Guaranteed 15ns Receiver Propagation Delay
o Guaranteed 2ns Receiver Skew
o Guaranteed 8ns Package-to-Package Skew Time
o V_L Pin for Connection to FPGAs/ASICs
o Allow Up to 128 Transceivers on the Bus
(1/4-unit-load)
o Tiny SOT23 Package
o True Fail-Safe Receiver
o -7V to +12V Common-Mode Range
o 3V to 5.5V Power-Supply Range
o Enable (High and Low) Pins for Redundant
Operation
o Three-State Output Stage (MAX3281E/MAX3283E)
o Thermal Protection Against Output Short Circuit
Clock Distribution
Telecom Racks
Base Stations
Industrial Control
Local Area Networks
Applications
Pin Configurations appear at end of data sheet.
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX3280EAUK+T -40°C to +125°C 5 SOT23 +ADVM
MAX3280EAUK/V+T -40°C to +125°C 5 SOT23
MAX3281EAUT+T -40°C to +125°C 6 SOT23
MAX3283EAUT+T -40°C to +125°C 6 SOT23
MAX3284EAUT+T -40°C to +125°C 6 SOT23
+AFME
+ABAT
+ABAU
+ABAV
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
/V denotes an automotive qualified part.
Selector Guide
PART
V_L
MAX3280E
—
MAX3281E
—
MAX3283E
—
MAX3284E
✔
Note 1: MAX3284E data rate is dependent on V_L.
ENABLE
—
Active High
Active Low
—
DATA RATE
52Mbps
52Mbps
52Mbps
52Mbps (Note 1)
PACKAGE
5-Pin SOT23
6-Pin SOT23
6-Pin SOT23
6-Pin SOT23
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-2320; Rev 2; 12/12