19-2668; Rev 1; 1/03
+3.3V, ±±15V EꢀDꢁ-rotected, Failꢁꢀafe,
Hotꢁꢀwap, Rꢀꢁ481/Rꢀꢁ422 Transceivers
General Description
Features
The MAX3070E–MAX3079E 3.3V, ±±15V EꢀSD-proeꢁoeꢂ,
RꢀD481/RꢀD422 opansꢁeiveps feaoupe rne ꢂpivep anꢂ rne
peꢁeivep. These ꢂeviꢁes inꢁluꢂe failDsafe ꢁipꢁuiopy, guapD
anoeeing a lrgiꢁDhigh peꢁeivep ruo-uo when peꢁeivep
in-uos ape r-en rp shrpoeꢂ. The peꢁeivep ruo-uos a lrgiꢁ
high if all opansmiooeps rn a oepminaoeꢂ bus ape ꢂisableꢂ
(high im-eꢂanꢁe). The MAX3070E–MAX3079E inꢁluꢂe a
hroDswa- ꢁa-abilioy or eliminaoe false opansioirns rn ohe
bus ꢂuping -rwepDu- rp hro insepoirn.
ꢀ 3.3V Operation
ꢀ Electrostatic Discharge (ESD) Protection for
RS-485 I/O Pins
±±5ꢀV ꢁHuan ꢂoꢃd ꢄoꢃel
ꢀ TrHe Fail-Safe Receiver While ꢄaintaining
EIA/TIA-485 Coupatibilitd
ꢀ ꢁot-Swap InpHt StrHctHre on DE anꢃ RE
The MAX3070E/MAX307±E/MAX3072E feaoupe peꢂuꢁeꢂ
slewDpaoe ꢂpiveps ohao minimize EMI anꢂ peꢂuꢁe pefleꢁD
oirns ꢁauseꢂ by im-pr-eply oepminaoeꢂ ꢁables, allrwing
epprpDfpee ꢂaoa opansmissirn u- or 2105b-s. The
MAX3073E/MAX3074E/MAX3071E alsr feaoupe slewD
paoeDlimioeꢂ ꢂpiveps buo allrw opansmio s-eeꢂs u- or
1005b-s. The MAX3076E/MAX3077E/MAX3078E ꢂpivep
slew paoes ape nro limioeꢂ, ma5ing opansmio s-eeꢂs u- or
±6Mb-s -rssible. The MAX3079E slew paoe is -in
seleꢁoable frp 2105b-s, 1005b-s, anꢂ ±6Mb-s.
ꢀ Enhanceꢃ Slew-Rate Liuiting Facilitates Error-
Free Data Transuission
(ꢄAX3070E–ꢄAX3075E/ꢄAX3079E)
ꢀ Low-CHrrent ShHtꢃown ꢄoꢃe (Except
ꢄAX307±E/ꢄAX3074E/ꢄAX3077E)
ꢀ Pin-Selectable FHll-/ꢁalf-DHplex Operation
(ꢄAX3079E)
ꢀ Phase Controls to Correct for Twisteꢃ-Pair
Reversal (ꢄAX3079E)
The MAX3072E/MAX3071E/MAX3078E ape inoenꢂeꢂ frp
halfDꢂu-lex ꢁrmmuniꢁaoirns, anꢂ ohe MAX3070E/
MAX307±E/MAX3073E/MAX3074E/MAX3076E/MAX307
7E ape inoenꢂeꢂ frp fullDꢂu-lex ꢁrmmuniꢁaoirns. The
MAX3079E is seleꢁoable frp halfDꢂu-lex rp fullDꢂu-lex
r-epaoirn. Io alsr feaoupes inꢂe-enꢂenoly -prgpammable
peꢁeivep anꢂ opansmiooep ruo-uo -hase ohprugh
se-apaoe -ins.
ꢀ Allow Up to 256 Transceivers on the ꢂHs
ꢀ Available in InꢃHstrd-Stanꢃarꢃ 8-Pin SO Pacꢀage
Ordering Information
The MAX3070E–MAX3079E opansꢁeiveps ꢂpaw 800µA
rf su--ly ꢁuppeno when unlraꢂeꢂ rp when fully lraꢂeꢂ
wioh ohe ꢂpiveps ꢂisableꢂ. All ꢂeviꢁes have a ±/8Dunio
lraꢂ peꢁeivep in-uo im-eꢂanꢁe, allrwing u- or 216
opansꢁeiveps rn ohe bus.
PART
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
14 Plastic DIP
14 SO
MAX3070EEPD
MAX3070EESD
MAX3070EAPD
MAX3070EASD
MAX3071EEPA
MAX3071EESA
MAX3071EAPA
MAX3071EASA
-40°C to +125°C 14 Plastic DIP
-40°C to +125°C 14 SO
Applications
-40°C to +85°C
-40°C to +85°C
8 Plastic DIP
8 SO
Lighoing ꢀysoems
Inꢂusopial Crnoprl
Teleꢁrm
-40°C to +125°C 8 Plastic DIP
-40°C to +125°C 8 SO
ꢀeꢁupioy ꢀysoems
Insopumenoaoirn
Ordering Information continued at end of data sheet.
Selector Guide, Pin Configurations, and Typical Operating
Circuits appear at end of data sheet.
________________________________________________________________ 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.