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MAX14780E
+5.0V, ±30kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceiver
RS-485 Transceiver with High ±30kV ESD Protection for Robust System Performance
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Status
Active: In Production.
Description
The MAX14780E +5.0V, ±30kV ESD-protected, RS-485/RS-422 transceiver features one driver and one receiver. The device includes fail-safe circuitry, guaranteeing 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 MAX14780E includes a hot-swap capability to eliminate false transitions on the bus during power-up or hot insertion.
The MAX14780E features reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 500kbps.
The MAX14780E is ideal for half-duplex communications and it draws 1.2mA of supply current when unloaded or when fully loaded with the drivers disabled. The MAX14780E has a 1/8-unit load receiver input impedance, allowing up to 256 transceivers on the bus.
The MAX14780E is available in an 8-pin SO and PDIP packages.
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Data Sheet
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Key Features
- +5.0V Operation
- Extended ESD Protection for RS-485/RS-422 I/O Pins ±30kV Human Body Model
- True Fail-Safe Receiver While Maintaining EIA/TIA-485 Compatibility
- Hot-Swap Input Structures on DE and Active-Low RE
- Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission
- Low-Current Shutdown Mode
- Allow Up to 256 Transceivers on the Bus
- Available in Industry-Standard 8-Pin SO and PDIP Packages
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Applications/Uses
- Industrial Control
- Instrumentation
- Lighting Systems
- PROFIBUS
- Security Systems
- Telecom
- Utility Meters
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Key Specifications:
| RS-422/485 Line Driver/Receivers |
| Part Number |
Tx/Rx |
Duplex |
VSUPPLY
(V) |
ICC
(mA) |
Data Rate
(kbps) |
ESD Protect.
(±kV) |
Tx EN |
Rx EN |
ICC (Shutdn.)
(µA) |
Rx/Tx on Bus |
Package/Pins |
Budgetary Price |
| typ |
min |
typ |
See Notes |
| MAX14780E |
1Tx + 1Rx |
Half |
5 |
1.2 |
500 |
30 |
Yes |
Yes |
2.8 |
256 |
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$1.55 @1k |
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See All RS-422/485 Line Driver/Receivers (165)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Typical Operating Circuit
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX14780EEPA+
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Active |
PDIP(N);8 pin;79.7 mm²
Outline Drawing:21-0043 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P8+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX14780EESA+
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Active |
SOIC(N);8 pin;30.9 mm²
Outline Drawing:21-0041 (PDF)
Land Pattern: 90-0096 (PDF)
Use pkgcode/variation: S8+4*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX14780EESA+T
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Active |
SOIC(N);8 pin;30.9 mm²
Outline Drawing:21-0041 (PDF)
Land Pattern: 90-0096 (PDF)
Use pkgcode/variation: S8+4*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Information Index
Document Ref.: 19-5652
Rev 2;
2011-11-09
This page last modified: 2011-11-09
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