19-2320; Rev 1; 3/11
1ꢀ5k EꢁDꢂ-rotected ꢀ2Mbps, 3k to ꢀ.ꢀk, ꢁOT23
Rꢁꢂ48ꢀ/Rꢁꢂ422 True Failꢂꢁafe Receivers
01/MAX3284E
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.
♦ ESD Protection:
±±15k ꢀHumn ꢁoꢂd ꢃoꢂeꢄ
±ꢅ5k ꢆEꢇ ±ꢈꢈꢈ0-0ꢉ2 ꢇontmct Diꢊcꢋmrꢌe
±±ꢉ5k ꢆEꢇ ±ꢈꢈꢈ0-0ꢉ2 ꢍir0ꢎma Diꢊcꢋmrꢌe
♦ ꢎHmrmnteeꢂ 1ꢉꢃbaꢊ Dmtm Rmte
♦ ꢎHmrmnteeꢂ ±1nꢊ Receiver Proamꢌmtion Deꢄmd
♦ ꢎHmrmnteeꢂ ꢉnꢊ 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.
♦ ꢎHmrmnteeꢂ 8nꢊ Pmc5mꢌe0to0Pmc5mꢌe S5ew Tiue
♦ k Pin for ꢇonnection to FPꢎꢍꢊ/ꢍSꢆꢇꢊ
L
♦ ꢍꢄꢄow Ua to ±ꢉ8 Trmnꢊceiverꢊ on tꢋe ꢁHꢊ
(±/-0Hnit0ꢄomꢂ)
♦ Tind SOTꢉ3 Pmc5mꢌe
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
♦ TrHe Fmiꢄ0Smfe Receiver
♦ 07k to +±ꢉk ꢇouuon0ꢃoꢂe Rmnꢌe
♦ 3k to 1.1k Power0SHaaꢄd Rmnꢌe
♦ Enmbꢄe (ꢀiꢌꢋ mnꢂ Low) Pinꢊ for ReꢂHnꢂmnt
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
♦ Tꢋree0Stmte OHtaHt Stmꢌe (ꢃꢍX3ꢉ8±E/ꢃꢍX3ꢉ83E)
♦ Tꢋerumꢄ Protection ꢍꢌminꢊt OHtaHt Sꢋort ꢇircHit
offered in a 6-pin SOT23 package.
Applications
Ordering Information
Clock Distribution
Telecom Racks
Base Stations
PIN-
TOP
PART
TEMP RANGE
PACKAGE MARK
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
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Pin ꢇonfiꢌHrmtionꢊ maaemr mt enꢂ of ꢂmtm ꢊꢋeet.
ꢁelector Guide
PꢍRT
k
ENꢍꢁLE
—
DꢍTꢍ RꢍTE
52Mbps
PꢍꢇKꢍꢎE
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 ±: MAX3284E data rate is dependent on V .
L
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