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MAX3070E Datasheet

  • MAX3070E

  • "+3.3V, ?5kV ESD-Protected, Fail-Safe, Hot-Swap, Full-Duplex...

  • Maxim   Maxim

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19-2668; Rev 1; 1/03
+3.3V, 鹵15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
General Description
The MAX3070E鈥揗AX3079E 3.3V, 鹵15kV ESD-protected,
RS-485/RS-422 transceivers feature one driver and one
receiver. These devices include fail-safe circuitry, guar-
anteeing a logic-high receiver output when receiver
inputs are open or shorted. The receiver outputs a logic
high if all transmitters on a terminated bus are disabled
(high impedance). The MAX3070E鈥揗AX3079E include a
hot-swap capability to eliminate false transitions on the
bus during power-up or hot insertion.
The MAX3070E/MAX3071E/MAX3072E feature reduced
slew-rate drivers that minimize EMI and reduce reflec-
tions caused by improperly terminated cables, allowing
error-free data transmission up to 250kbps. The
MAX3073E/MAX3074E/MAX3075E also feature slew-
rate-limited drivers but allow transmit speeds up to
500kbps. The MAX3076E/MAX3077E/MAX3078E driver
slew rates are not limited, making transmit speeds up to
16Mbps possible. The MAX3079E slew rate is pin
selectable for 250kbps, 500kbps, and 16Mbps.
The MAX3072E/MAX3075E/MAX3078E are intended for
half-duplex communications, and the MAX3070E/
MAX3071E/MAX3073E/MAX3074E/MAX3076E/MAX307
7E are intended for full-duplex communications. The
MAX3079E is selectable for half-duplex or full-duplex
operation. It also features independently programmable
receiver and transmitter output phase through
separate pins.
The MAX3070E鈥揗AX3079E transceivers draw 800碌A(chǔ)
of supply current when unloaded or when fully loaded
with the drivers disabled. All devices have a 1/8-unit
load receiver input impedance, allowing up to 256
transceivers on the bus.
o
3.3V Operation
o
Electrostatic Discharge (ESD) Protection for
RS-485 I/O Pins
鹵15kV Human Body Model
o
True Fail-Safe Receiver While Maintaining
EIA/TIA-485 Compatibility
o
Hot-Swap Input Structure on DE and
RE
o
Enhanced Slew-Rate Limiting Facilitates Error-
Free Data Transmission
(MAX3070E鈥揗AX3075E/MAX3079E)
o
Low-Current Shutdown Mode (Except
MAX3071E/MAX3074E/MAX3077E)
o
Pin-Selectable Full-/Half-Duplex Operation
(MAX3079E)
o
Phase Controls to Correct for Twisted-Pair
Reversal (MAX3079E)
o
Allow Up to 256 Transceivers on the Bus
o
Available in Industry-Standard 8-Pin SO Package
Features
MAX3070E鈥揗AX3079E
Ordering Information
PART
MAX3070EEPD
MAX3070EESD
MAX3070EAPD
MAX3070EASD
MAX3071EEPA
MAX3071EESA
MAX3071EAPA
MAX3071EASA
TEMP RANGE
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +125擄C
-40擄C to +125擄C
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +125擄C
-40擄C to +125擄C
PIN-PACKAGE
14 Plastic DIP
14 SO
14 Plastic DIP
14 SO
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
Applications
Lighting Systems
Industrial Control
Telecom
Security Systems
Instrumentation
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
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

MAX3070E PDF文件相關(guān)型號(hào)

MAX3070EAPD,MAX3070EASD,MAX3070EEPD,MAX3070E-MAX3079E,MAX3071E,MAX3071EAPA,MAX3071EASA,MAX3071EEPA,MAX3071EESA,MAX3072E,MAX3072EAPA,MAX3072EASA,MAX3072EEPA,MAX3072EESA,MAX3073E,MAX3073EAPD,MAX3073EASD,MAX3073EEPD,MAX3073EESD,MAX3074E,MAX3074EAPA,MAX3074EASA,MAX3074EEPA,MAX3074EESA,MAX3075E,MAX3075EAPA,MAX3075EASA,MAX3075EEPA,MAX3075EESA,MAX3076E,MAX3076EAPD,MAX3076EASD,MAX3076EEPD,MAX3076EESD,MAX3077E,MAX3077EAPA,MAX3077EASA,MAX3077EEPA,MAX3077EESA,MAX3078E,MAX3078EAPA,MAX3078EASA,MAX3078EEPA,MAX3078EESA,MAX3079E,MAX3079EAPD,MAX3079EASD,MAX3079EEPD,MAX3079EESD

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