|
|
|
MAX13450E, MAX13451E
RS-485 Transceivers with Integrated 100Ω/120Ω Termination Resistors
Software/Pin-Selectable Termination Eliminates the Need for External Resistors and DIP Switches
|
Status
Active: In Production.
Description
The MAX13450E/MAX13451E are half-duplex and full-duplex RS-485/RS-422 transceivers. These devices feature internal 100Ω and 120Ω termination resistors. The resistor values are pin selectable. A logic supply input allows interfacing to logic levels down to +1.8V.
The MAX13450E/MAX13451E feature strong drivers specified to drive low-impedance lines found when a fully loaded bus, based on today's 100Ω characteristic impedance cable, is doubly terminated. Both devices allow slew-rate limiting of the driver output to reduce EMI and reflections for data rates up to 500kbps.
The MAX13451E has a FAULT alarm indication output to signal to the system that an error condition exists in the driver. The MAX13451E also features a logic inversion function. The logic inversion allows phase reversal of the A-B signals in case these are inadvertently connected wrongly.
The MAX13450E/MAX13451E have 1/8-unit load receiver input impedance, allowing up to 256 transceivers on the bus. All driver outputs are protected to ±30kV ESD using the Human Body Model (HBM).
The MAX13450E/MAX13451E are available in a 14-pin TSSOP package and operate over the automotive -40°C to +125°C temperature range.
|
|
Data Sheet
|
Key Features
- 100Ω/120Ω Pin-Selectable Internal Termination Resistors
- Driver Drives 100Ω Double Termination
- 20Mbps (max) Data Rate
- Pin-Selectable Slew-Rate Limiting
- Logic Supply Input Allows Interfacing Down to 1.8V
- Driver Fault-Indication Output (MAX13451E)
- Inverting of A, B Line Polarity (MAX13451E)
- High-Impedance Driver Output/Receiver Input When VCC Supply is Removed
- Hot-Swap Input Structure on DE, Active-Low RE, and Active-Low TERM
- Extended ESD Protection
- ±30kV Human Body Model
- ±15kV Air Gap Discharge per IEC 61000-4-2
- ±7kV Contact Discharge per IEC 61000-4-2
- 1/8-Unit Load Allows Up to 256 Transceivers on the Bus
- Thermal and Overcurrent Protected
- Fail-Safe Receivers
- +4.5V to +5.5V Supply Voltage Range
|
|
Applications/Uses
- Industrial Control Systems
- Medical Networks
- Motor Control
- Portable Industrial Equipment
- Security Networks
|
|
|
|
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 |
| MAX13450E |
1Tx + 1Rx |
Half/Full |
5 |
- |
20000 |
30 |
Yes |
Yes |
6 |
256 |
|
$1.89 @1k |
| MAX13451E |
Half |
6 |
30 |
|
$1.89 @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 (MAX13451E)
Application Notes
Product Guides
Reliability Reports
| 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
|
| MAX13450EAUD+
|
|
|
Active |
TSSOP-EP;14 pin;33.2 mm²
Outline Drawing:21-0108 (PDF)
Land Pattern: 90-0119 (PDF)
Use pkgcode/variation: U14E+3*
|
-40°C to +125°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX13450EAUD+T
|
|
|
Active |
TSSOP;
Land Pattern: Not Available
|
-40°C to +125°C
|
See data sheet
|
| MAX13451EAUD+
|
|
|
Active |
TSSOP-EP;14 pin;33.2 mm²
Outline Drawing:21-0108 (PDF)
Land Pattern: 90-0119 (PDF)
Use pkgcode/variation: U14E+3*
|
-40°C to +125°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX13451EAUD+T
|
|
|
Active |
TSSOP-EP;14 pin;33.2 mm²
Outline Drawing:21-0108 (PDF)
Land Pattern: 90-0119 (PDF)
Use pkgcode/variation: U14E+3*
|
-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
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-5254
Rev 1;
2010-12-15
This page last modified: 2010-12-15
|
|
|
Download
E-Mail