DS36954 - Quad Differential Bus Transceiver
Datasheet Packaging Samples & Pricing Reliability Application Notes Knowledge Base

Features
Pinout for SCSI interface
Compact 20-pin PLCC or SOIC package
Meets EIA-485 standard for multipoint bus transmission
Greater than 60 mA source/sink currents
Thermal shutdown protection
Glitch-free driver outputs on power up and down

General Description


The DS36954 is a low power, quad EIA-485 differential bus transceiver especially suited for high speed, parallel, multipoint, I/O bus applications. More...


 

ParametersValues
Function Transceiver
Channels 4 Channels
Max Data Rate 10 Mbps
SupplyVoltage 5 Volt
Process LFAST
Special Features SCSI Interface
Temperature Min 0 deg C
Temperature Max 70 deg C
JTAG1149.1 No
Drivers 4
Receivers 4

Additional Resources


Application Notes


Connection Diagram


click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
DS36954 Quad Differential Bus Transceiver 574
Kbytes
11-Nov-04 Download
DS36954 Quad Differential Bus Transceiver (Japanese)
317 Kbytes   Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.


Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders
Budgetary PricingStd
Pack
Size
Package
Marking
Format
TypePinsSpec.MSL
Rating
Peak
Reflow
RoHS
Report
CAD
Symbols
WeeksQtyQty$US each
DS36954MSOIC WIDE20NOPB
STD
3
2A
260
220
RoHS Download Full productionN/A
 
Buy Now
1K+$6.51rail
of
36
NSUZXYTTE#
DS36954
M
6 weeks100
DS36954MXSOIC WIDE20NOPB3260RoHS Download Full productionN/A
 
Buy Now
1K+$6.51reel
of
1000
NSUZXYTTE#
DS36954
M
8 weeks2000
DS36954VXPLCC20NOPB
STD
2A
2A
250
250
RoHS Download Full productionN/A
 
Buy Now
1K+$6.29reel
of
1000
NSUZXYTTE#
DS36954V
6 weeks2000

Obsolete Versions

Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
DS36954V
NONE
NATIONAL SEMICONDUCTOR
25 Oct 2005

General Description


The DS36954 is a low power, quad EIA-485 differential bus transceiver especially suited for high speed, parallel, multipoint, I/O bus applications. A compact 20-pin surface mount PLCC or SOIC package provides high transceiver integration and a very small PC board footprint.

Propagation delay skew between devices is specified to aid in parallel interface designs-limits on maximum and minimum delay times are guaranteed.

Five devices can implement a complete SCSI initiator or target interface. Three transceivers in a package are pinned out for data bus connections. The fourth transceiver, with the flexibility provided by its individual enables, can serve as a control bus transceiver.

Reliability Metrics


Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
DS36954MLFAST10195100026050002739175862
DS36954MXLFAST10195100026050002739175862
DS36954VXLFAST10195100026050002739175862

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-904: Application Note 904 An Introduction to the Differential SCSI Interface 58
Kbytes
5-Oct-98 Download
AN-1057: Application Note 1057 Ten Ways to Bulletproof RS-485 Interfaces 155
Kbytes
2-Oct-02 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

More Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-409: Application Note 409 Transceivers and Repeaters Meeting the EIA RS-485 Interface Standard 320
Kbytes
5-Oct-98 Download
AN-847: Application Note 847 FAILSAFE Biasing of Differential Buses 89
Kbytes
5-Oct-98 Download
AN-847 (Japanese): Application Note 847 FAILSAFE Biasing of Differential Buses
160 Kbytes   Download
AN-454: Application Note 454 Automotive Multiplex Wiring 107
Kbytes
5-Oct-98 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 8-Nov-2009]