|
|
|
MAX14840E, MAX14841E
40Mbps, +3.3V, RS-485 Half-Duplex Transceivers
Low-Voltage, High-Speed RS-485 Transceivers Increase Data Rates and Extend Cable Lengths
|
Status
Active: In Production.
Description
The MAX14840E/MAX14841E are +3.3V ESD-protected transceivers intended for half-duplex RS-485 communication up to 40Mbps. These transceivers are optimized for high speeds over extended cable runs while maximizing tolerance to noise.
The MAX14840E features symmetrical fail-safe and larger receiver hysteresis, providing improved noise rejection and improved recovered signals in high-speed and long cable applications. The MAX14841E has true fail-safe receiver inputs guaranteeing a logic-high receiver output when inputs are shorted or open.
The MAX14840E/MAX14841E transceivers draw 1.5mA (typ) supply current when unloaded or when fully loaded with the drivers disabled. Hot-swap capability eliminates undesired transitions on the bus during power-up or hot insertion.
The MAX14840E/MAX14841E are available in 8-pin SO and small, 8-pin (3mm x 3mm) TDFN-EP packages. Both devices operate over the -40°C to +125°C automotive temperature range.
|
|
Data Sheet
|
An evaluation kit is available: MAX14840PMB1 MAXPMBAE
Key Features
- Half-Duplex RS-485 Transceivers
- +3.3V Supply Voltage
- 40Mbps Maximum Data Rate
- Large (170mV) Receiver Hysteresis on MAX14840E
- Symmetrical Fail-Safe Receiver Input on MAX14840E
- Fail-Safe Receiver Input (MAX14841E)
- Hot-Swap Capability
- Short-Circuit Protected Outputs
- Thermal Self-Protection
- Low 10µA (max) Shutdown Current
- Extended ESD Protection for RS-485 I/O Pins
- ±35kV Human Body Model (HBM)
- ±20kV Air-Gap Discharge per IEC 61000-4-2
- ±12kV Contact Discharge per IEC 61000-4-2
- Automotive -40°C to +125°C Operating Temperature Range
- Available in Industry-Standard 8-Pin SO, or Space-Saving 8-Pin TDFN-EP (3mm x 3mm) Packages
|
|
Applications/Uses
- Backplane Buses
- Fieldbus Networks
- HVAC Networks
- Industrial Control Systems
- Motion Controllers
|
|
|
|
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 |
| MAX14840E |
1Tx + 1Rx |
Half |
3.3 |
1.5 |
40000 |
35 |
Yes |
Yes |
10 |
32 |
|
$1.63 @1k |
| MAX14841E |
|
$1.63 @1k |
|
See All RS-422/485 Line Driver/Receivers (165)
|
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.
|
|
Diagram
Functional Diagram
Application Notes
Product Guides
Reliability Reports
| Reliability Report: |
MAX14841E.pdf |
| Show FIT data for: |
|
| Request Reliability Report for: |
|
Software/Models
Ordering Information
|
Part Number
|
Free
Sample |
Buy |
Status
|
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
|
Temp |
RoHS/Lead-Free?
Materials Analysis
|
| MAX14840EASA+
|
|
|
Active |
SOIC(N);8 pin;30.9 mm²
Outline Drawing:21-0041 (PDF)
Land Pattern: 90-0096 (PDF)
Use pkgcode/variation: S8+4*
|
-40°C to +125°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX14840EASA+T
|
|
|
Active |
SOIC(N);8 pin;30.9 mm²
Outline Drawing:21-0041 (PDF)
Land Pattern: 90-0096 (PDF)
Use pkgcode/variation: S8+4*
|
-40°C to +125°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX14840EATA+
|
|
|
Active |
TDFN-EP;8 pin;9.6 mm²
Outline Drawing:21-0137 (PDF)
Land Pattern: 90-0059 (PDF)
Use pkgcode/variation: T833+2*
|
-40°C to +125°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX14840EATA+T
|
|
|
Active |
TDFN-EP;8 pin;9.6 mm²
Outline Drawing:21-0137 (PDF)
Land Pattern: 90-0059 (PDF)
Use pkgcode/variation: T833+2*
|
-40°C to +125°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX14841EASA+
|
|
|
Active |
SOIC(N);8 pin;30.9 mm²
Outline Drawing:21-0041 (PDF)
Land Pattern: 90-0096 (PDF)
Use pkgcode/variation: S8+4*
|
-40°C to +125°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX14841EASA+T
|
|
|
Active |
SOIC(N);8 pin;30.9 mm²
Outline Drawing:21-0041 (PDF)
Land Pattern: 90-0096 (PDF)
Use pkgcode/variation: S8+4*
|
-40°C to +125°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX14841EATA+
|
|
|
Active |
TDFN-EP;8 pin;9.6 mm²
Outline Drawing:21-0137 (PDF)
Land Pattern: 90-0059 (PDF)
Use pkgcode/variation: T833+2*
|
-40°C to +125°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX14841EATA+T
|
|
|
Active |
TDFN-EP;8 pin;9.6 mm²
Outline Drawing:21-0137 (PDF)
Land Pattern: 90-0059 (PDF)
Use pkgcode/variation: T833+2*
|
-40°C to +125°C
|
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.
|
Similar Products by Function
Similar Products by Application
Evaluation Kits
| MAX14840PMB1 |
MAX14840PMB1 Peripheral Module |
| MAXPMBAE |
Maxim Analog Essentials Collection of Peripheral Modules |
Products with Similar Part Numbers
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-5131
Rev 0;
2010-03-02
This page last modified: 2010-03-10
|
|
|
Download
E-Mail