===============================================================================
                             7290A IDE DRIVE
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KEY FEATURES:

  * 14ms average seek               * 64K on-board cache  
  * Low power consumption           * Zone density recording 
  * 1:1 interleave                  * Dual drive master/slave support 
  * Rotary voice coil               * Automatic actuator lock 
  * Single-sided surface mount PCBA

SPECIFICATIONS:

Formatted capacity: ........................ 290 Mbytes
Embedded Controller: ....................... AT 
Actuator type: ............................. Voice Coil
Number of Disks: ........................... 2
Data Surfaces: ............................. 4
Data Heads: ................................ 4
Servo: ..................................... Embedded
Physical Cylinders ......................... 1,751
Track Density (average): ................... 2,762 tpi
Bytes per sector:........................... 512
Sectors per drive (user).................... 566,692

Sectors per track:
        Zone 1 ....................  96
        Zone 2 ....................  84
        Zone 3 ....................  80
        Zone 4 ....................  72
        Zone 5 ....................  67
        Zone 6 ....................  60

PERFORMANCE (Typical):

Seek times* (ms)
     Track to track: ....................... 3
     Average: .............................. 14 **
     Maximum: .............................. 27

Average latency (ms) ....................... 8.45
Spindle speed .............................. 3,551 RPM
Controller overhead ........................ 1 ms

Data transfer rate (Mbytes per sec)
     To/From Media (MB/sec) Zone 1 ......... 3.75
     To/from buffer (AT) ................... 9/10
     To/from interface ..................... 8.0

Start time / power up (0-3,551 RPM)
     Average ............................. <= 6 sec
     Maximum ............................. <= 10 sec

Stop time / power down
     Average ............................... <= 3 sec
     Maximum ............................... <= 5 sec

Interleave: ................................ 1:1
Buffer Size: ............................... 64K
Interface: ................................. AT 
Recording Method: .......................... 1,7 RLL
Recording Density (Kbpi) ................... 50.6 max
Flux Density (Kfci) ........................ 38.0 max

Power Requirements (Typical):

    Mode   +12VDC +-8%  +5VDC +-5%  Power/Duration
    Spin-up 800mA        450mA
    R/W     135mA        460mA      3.2 W
    Seeking 130mA        435mA      
    Idle Active                     3.0 W

Physical:

    Height:  1.00"  (2.54 cm)
    Length:  5.75"  (14.61 cm)
    Width:   4.00"  (10.16 cm)
    Weight:  1.2 lbs. (.57 kg)

Environmental:

Temperature (Degrees C)
    Operating .............................. 5 to 50
    Non-operating .......................... -40 to 60
    Thermal Gradient ....................... 20 C per hr

Humidity ***
    Operating .............................. 5% to 95% non-condensing
    Non-operating .......................... 5% to 95% non-condensing
    Maximum wet bulb ....................... 27.6  
    Maximum Gradient / hr .................. 20%

Altitude (relative to sea level)
    Operating .............................. -200 to 10,000 feet
    Non-operating .......................... MIL-STD-810E
    
Reliability and Maintenance:

MTBF ....................................... >300,000 hours 
Preventative Maintenance ................... None
Component design life ...................... 5 years (minimum)
Data reliability............................ <10 per 10^13 bits read
Seek Error Rate ............................ <=10^7
Shock & Vibration (typical)
          
    Operating Shock ........................ 10 Gs, 11ms (no errors)
    Non-Operating Shock .................... 70Gs
    
    Operating Vibration (without nonrecoverable errors)
      5-20Hz ............................... .049"
      20-300Hz ............................. 1.5G

      Non-operating Vibration (without nonrecoverable errors)
      5-20 Hz ............................... .05"
      20-300 Hz ............................. 1.0 G peak

Acoustic Noise
    Sound power (per ISO 7779) ............. 3.9 belA
    Sound pressure ......................... 32.2 dBA

*   At nominal DC input volages
**  The average of 10,000 random seek times (measured on independent
    test equipment) consitutes the average seek time specification.
*** Operating and non-operating specs meet MIL-STD-810E. 
    Method 507.3 Table 507.3-I High humidity diurnal catagory. 
    Natural, High Humidity, Cyclic (Cycle 3)

==============================================================================

          7290A JUMPER DESIGNATION        J24J23J22J20J18J17J16    
    +-------------------------------------+---+---+---+---+---+---+---+    
     Cable Select                                                 
      Disabled*                           O                       
      Enabled                             J                       
    +-------------------------------------+---+---+---+---+---+---+---+    
     Write Cache                                                  
      Enabled*                               O                    
      Disabled                               J                    
    +-------------------------------------+---+---+---+---+---+---+---+    
     Drive Compatibility                                          
      Disabled*                                 O                 
      Enabled                                   J                 
    +-------------------------------------+---+---+---+---+---+---+---+    
     Master/Slave                                                 
      Only drive in single drive system*           J              
      Master in dual drive system                  J              
      Slave in dual drive system                   O              
    +-------------------------------------+---+---+---+---+---+---+---+    
     Low Power Spin mode                                          
      Disabled*                                       O           
      Enabled                                         J           
    +-------------------------------------+---+---+---+---+---+---+---+    
     ECC                                                          
      11-Byte*                                           O        
      4-Byte Emulation                                   J        
    +-------------------------------------+---+---+---+---+---+---+---+    
     I/O Channel Ready                                            
      Option Disabled*                                      O     
      Option Enabled                                        J     
    +-------------------------------------+---+---+---+---+---+---+---+    
     I/O Channel Ready                                            
      Disabled*                                                   
      Enabled                                                     
    +------------------------------------------------------------------    
         J=Jumpered O=Open *=Default 

+-----+  +------------------+     +--+  +-------------+     +--+  +---------+
     +--+                  +-----+  +--+             +-----+  +--+         ++
                                                            +----+       +---+
 +              +------------------------------------------>::::          
        +----------------+                                  +----+          
             J24 J22                                         +   +--+     
          +---+---+-+                                            ,,     
           * * * *               +---------------------------->::     
           * * * *       +---------------+                     ::  J1 
          +-+---+---+          +-----+                         +--+     
           J25 J23          J20+ ---                                   
        +----------------+        --- +J19+                              
                              J18+ * *       +                           
                                  * * +J17                               
                              J16+ * *                                   
       +                         +-----+                             1 +---+
                             +---------------+                          +----+
                                                                   +  1     
                                                                            
                                                                         J3 
    +--+                 +-----+   +--+                +----+  +--+         
+----+  +-----------------+     +---+  +----------------+    +--+  +----------+

                            CMOS Configuration:     

                    Cyls  Hds  Write  Landing Sec/Trk
                               PreComp  Zone
                    ---------------------------------
                    941   14     0       0       43

          
            7290A is a registered trademark of Maxtor Corporation.
               AT is a registered trademark of IBM Corporation.
               Specifications subject to change without notice.
                     Copyright 1993-95 Maxtor Corporation.
                       Rev A      8/16/96    T. Brooker
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