19-2320; Rev 0; 1/02
1ꢀ5k EꢁDꢂ-rotected ꢀ2Mbps, 3k to ꢀ.ꢀk, ꢁOT23
Rꢁꢂ48ꢀ/Rꢁꢂ422 True Failꢂꢁafe Receivers
General Description
Features
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.
o ESD Protection:
±±15kV–Humn ꢀoꢁd ꢂoꢁeꢃ
±ꢄ5kVꢅEꢆ ±ꢇꢇꢇ0-0ꢈ2 ꢆontmct Diꢉcꢊmrꢋe
±±ꢈ5kVꢅEꢆ ±ꢇꢇꢇ0-0ꢈ2 ꢌir0ꢍma Diꢉcꢊmrꢋe
o ꢍHmrmnteeꢁ 1ꢈꢂbaꢉ Dmtm Rmte
o ꢍHmrmnteeꢁ ±1nꢉ Receiver Proamꢋmtion Deꢃmd
o ꢍHmrmnteeꢁ ꢈnꢉ Receiver S5ew
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.
o ꢍHmrmnteeꢁ 8nꢉ Pmc5mꢋe0to0Pmc5mꢋe S5ew Tiue
o k Pin for ꢆonnection to FPꢍꢌꢉ/ꢌSꢅꢆꢉ
L
o ꢌꢃꢃow Ua to ±ꢈ8 Trmnꢉceiverꢉ on tꢊe ꢀHꢉ
(±/-0Hnit0ꢃomꢁ)
o Tind SOTꢈ3 Pmc5mꢋe
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
o TrHe Fmiꢃ0Smfe Receiver
o 07k to +±ꢈk ꢆouuon0ꢂoꢁe Rmnꢋe
o 3k to 1.1k Power0SHaaꢃd Rmnꢋe
o Enmbꢃe (–iꢋꢊ mnꢁ Low) Pinꢉ for ReꢁHnꢁmnt
Oaermtion
for a logic high is user-defined by setting V in the
L
range from 1.65V to V . The MAX3284E is also
CC
o Tꢊree0Stmte OHtaHt Stmꢋe (ꢂꢌX3ꢈ8±E/ꢂꢌX3ꢈ83E)
o Tꢊerumꢃ Protection ꢌꢋminꢉt OHtaHt Sꢊort ꢆircHit
offered in a 6-pin SOT23 package.
Applications
Ordering Information
Clock Distribution
Telecom Racks
Base Stations
PIN-
PACKAGE
TOP
MARK
PART
TEMP RANGE
MAX3280EAUK-T -40°C to +125°C 5 SOT23-5
MAX3281EAUT-T -40°C to +125°C 6 SOT23-6
MAX3283EAUT-T -40°C to +125°C 6 SOT23-6
MAX3284EAUT-T -40°C to +125°C 6 SOT23-6
ADVM
ABAT
ABAU
ABAV
Industrial Control
Local Area Networks
Pin Configurations appear at end of data sheet.
ꢁelector Guide
PART
V
ENABLE
—
DATA RATE
52Mbps
PACKAGE
5-Pin SOT23
6-Pin SOT23
6-Pin SOT23
6-Pin SOT23
L
MAX3280E
MAX3281E
MAX3283E
MAX3284E
—
—
—
✔
Active High
Active Low
—
52Mbps
52Mbps
52Mbps (Note 1)
Note 1: MAX3284E data rate is dependent on V .
L
________________________________________________________________ Maxim Integrated Products
±
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
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