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MAX3280E_14 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 | |||
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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 propaga-
tion delay (15ns max) and package-to-package skew time
(8ns max) make these devices ideal for multidrop 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 compatibility 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 VL in the range from 1.65V to
VCC. The MAX3284E is also offered in a 6-pin SOT23
package.
Applications
ââ Clock Distribution
ââ Telecom Racks
ââ Base Stations
ââ Industrial Control
ââ Local Area Networks
Pin Configurations appear at end of data sheet.
Selector Guide
Features
ââ ESD Protection:
±15kV Human Body Model
±6kV IEC 1000-4-2, Contact Discharge
±12kV IEC 1000-4-2, Air-Gap Discharge
ââ Guaranteed 52Mbps Data Rate
ââ Guaranteed 15ns Receiver Propagation Delay
ââ Guaranteed 2ns Receiver Skew
ââ Guaranteed 8ns Package-to-Package Skew Time
ââ VL Pin for Connection to FPGAs/ASICs
ââ Allow Up to 128 Transceivers on the Bus
(1/4-unit-load)
ââ Tiny SOT23 Package
ââ True Fail-Safe Receiver
ââ -7V to +12V Common-Mode Range
ââ 3V to 5.5V Power-Supply Range
ââ Enable (High and Low) Pins for Redundant Operation
ââ Three-State Output Stage (MAX3281E/MAX3283E)
ââ Thermal Protection Against Output Short Circuit
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 +AFME
MAX3281EAUT+T -40°C to +125°C 6 SOT23
MAX3283EAUT+T -40°C to +125°C 6 SOT23
+ABAT
+ABAU
MAX3284EAUT+T -40°C to +125°C 6 SOT23
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
/V denotes an automotive qualified part.
+ABAV
PART
VL
MAX3280E
â
MAX3281E
â
MAX3283E
â
MAX3284E
â
Note 1: MAX3284E data rate is dependent on VL.
ENABLE
â
Active High
Active Low
â
DATA RATE
52Mbps
52Mbps
52Mbps
52Mbps (Note 1)
PACKAGE
5-Pin SOT23
6-Pin SOT23
6-Pin SOT23
6-Pin SOT23
19-2320; Rev 2; 12/12
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