============================================================================
                     Maxtor LXT-213SY SCSI Drive
============================================================================

KEY FEATURES:

* 15 msec average seek time
* 32Kbyte read-look-ahead cache buffer
* SCSI II compatibility
* Proven AT compatability
* Auto parking
* Exceptionally low 25 dBA audible noise level

SPECIFICATIONS:

Performance;

Capacity, typical format
* Per drive (Mbytes)............  213
* Per sector (bytes)............  512
* Spare capacity (Mbytes).......    6

SCSI-bus transfer rate (Mbytes/Sec)

* Asyncronous...................  5.0(max)
* Syncronous....................  6.0(max)

Disk Transfer (Mbits/sec).......  15.7

Seek time (msec), typical
* Average.......................  15
* Track-to-Track................   3
* Maximum.......................  30

Rotational Speed (RPM)..........  3600 +/- 5%

Average latency (msec)..........  8.33


FUNCTIONAL:

* Data zones....................  6
* Bit density (Kbpi)............  27-29
* Track density (tpi)...........  1,591
* Disks.........................  4
* Data heads....................  7
* Servo heads...................  1
* Physical tracks...............  9,240
* Sectors per track.............  34-56
* Physical cylinders............  1,320

PHYSICAL:

Dimensions

* Height........................  1.625 in. (41.3 mm)
* Width.........................  4.000 in. (101.6 mm)
* Depth.........................  5.750 in. (146 mm)
* Weight........................  2.2 lb. (1 kg)

Temperature limits

* Operating.....................  5 to 50 degrees (C)
* Non-operating.................  -40 to 65 degrees (C)
* Temperature gradiant/Hr         20 (C)

Relative humidity limits ( Non condensing)

* Operating......................  5 to 80%
* Non-operating..................  5 to 90%
* Maximum gradiant/Hr............  10%
* Maximum wet bulb...............  27.6 (C)

Shock (G's)

* Non-operating..................  50
* Operating (no errors)..........   3
* Operating (recoverable errors)   10


POWER:

* +12 VDC  +/- 5%, 0.6A (typical), 2.1A Max.
* +5 VDC +/- 5%, 0.5A (typical)
* Power dissipation (typical) 10 Watts


RELIABILITY:

MTBF............................  150,000 Hrs.
PM..............................  Not Required
MTTR............................  20 Minutes
Component design life...........  5 years
Recoverable error rate..........  <= 10^11 
Unrecoverable error rate........  <= 10^15
Seek error rate.................  <= 10^7


Ŀ Ŀ  Ŀ  Ŀ    Ŀ  Ŀ  Ŀ
                                                
 J3    JP6    JP8                                                      
     Ŀ                                                             
 ||||:<Ŀ                                              
                Ŀ                  
     ڿ.                        9  7  5  3  1                  J5  
                           Ŀ                    
                                                         
                    >                                
                                                
     ڿ.                        10  8  6  4  2                      
                                        J2  
 J1                                                                 
                                                                    
                                                                    
     ڿ.                                                             
                                                                   
                                                                J4  
                                                                   
                         LXT-213SY PCB Layout                       
                                                                      Ŀ


                        JP6
                        ----

              Pins 9-10 = Motor Start
                   7-8  = Parity   In = Enabled   Out = Disabled 
                   5-6  = SCSI ID MSB 
                   3-4  = SCSI ID     
                   1-2  = SCSI ID LSB 

       JP8 = Terminator Power

       SCSI     Pins     Pins     Pins
        ID      5 & 6    3 & 4    1 & 2 
       ----     -----    -----    ------             * NOTE *
        0        O         O        O
        1        O         O        J                O = OPEN
        2        O         J        O                J = JUMPED
        3        O         J        J
        4        J         O        O
        5        J         O        J
        6        J         J        O
        7        J         J        J



Revision A                                          Sandoval/Anderson
10/07/93







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