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                             7420AV IDE DRIVE
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KEY FEATURES:

  * 12ms average seek               * 32K on-board buffer
  * 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 * 3551 RPM Rotational speed 	     
  * Energy Star compliant           * Multi-Word DMA Mode 1

SPECIFICATIONS:

Formatted capacity: ........................ 420,442,112 Bytes
Bytes per sector:........................... 512
Integrated Controller/Interface: ........... AT 
Actuator type: ............................. Voice Coil
Data Surfaces: ............................. 3
Data Heads: ................................ 3
Servo: ..................................... Embedded
Tracks per surface (user): ................. 2,767
Track Density (average): ................... 3,200 tpi
Flux Density (average): .................... 48.07 kfci
Data Zones per Surface: .................... 8


PERFORMANCE (Typical):

Seek times* (ms)
     Track to track: ....................... 3
     Average: .............................. 12 **
     Maximum: .............................. 31

Average latency (ms): ...................... 8.45
Spindle speed (+-0.1%): .................... 3551 RPM
Controller overhead: ....................... 0.5 ms

Data transfer rate (Mbytes per sec)
  To/From Media (MB/sec): .................. 2.70 - 4.75
  To/from Interface (with I/O chrdy): .......PIO Mode 3
  DMA Transfers (sustained) .................Mode 0
  DMA Transfers (burst) .....................Mode 1

Start time (0 - Drive Ready) ............... <9 sec 
Stop Time/Power Down: ...................... <3.5 sec Avg.


Power Requirements (Typical):

    Mode         +12VDC +-8%  +5VDC +-5%  Power/Duration
    ----         -----------  ----------  --------------
    Spin-up        717mA       334mA        10.3W/1 sec max.
    Read/Write     207mA       332mA         4.14W
    Idle           181mA       328mA         3.81W
    Standby          2mA        95mA         0.50W
    Sleep            2mA        63mA         0.50W
    Active         219mA       330mA         4.28W

Physical:

    Height:  1.00"  ( 25.4 mm)
    Length:  5.75"  (146.1 mm)
    Width:   4.00"  (101.6 mm)
    Weight:  1.2 lb.  (0.5 kg)

Environmental:

Temperature (Degrees C)
    Operating (stabilized).................. 5C to 50C
    Non-operating .......................... -40C to 71C

Humidity ***
    Operating .............................. 5% to 95% non-condensing
    Non-operating .......................... 5% to 95% non-condensing

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 10^12 bits read
Start/Stop Cycles........................... > 20,000
Shock & Vibration (typical)
          
    Operating Shock ........................ 15 Gs
    Non-Operating Shock .................... 70Gs
    
    Operating Vibration (without non-recoverable errors)
      10Hz   ............................... .004 GxG/Hz
      40Hz.................................. .004 GxG/Hz
     500Hz.................................. .00004 GxG/hz

      Non-operating Vibration (without non-recoverable errors)
      10Hz.................................. .0015 GxG/Hz
      40Hz.................................. .0015 GxG/Hz
     500Hz.................................. .000015 GxG/hz

      20-300 Hz ............................. 1.0 G peak

Acoustic Noise
    Sound power (per ISO 7779) ............. 3.5 belA

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

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                       7420AV JUMPER DESIGNATION
                                          |J24|J23|J20|
    +=====================================+===+===+===+
    | Cable Select                        |   |   |   |
    |  Disabled*                          | O |   |   |
    |  Enabled                            | J |   |   |
    +=====================================+===+===+===+
    | Write Cache                         |   |   |   |
    |  Enabled*                           |   | O |   |
    |  Disabled                           |   | J |   |
    +=====================================+===+===+===+
    | Master/Slave                        |   |   |   |
    |  Only drive in single drive system* |   |   | J |
    |  Master in dual drive system*       |   |   | J |
    |  Slave in dual drive system         |   |   | O |
    +=====================================+===+===+===+
         J=Jumpered O=Open *=Default                      
         Note: Jumpers J21, and J25 factory reserved. 


+=====+  +==================+     +==+  +=============+     +==+  +=========+
|     +==+                  +=====+  +==+             +=====+  +==+         ++
|                                                            +=====+      +=+++
| +                    /====================================>|#::::|      *   |
|              #=======/=========+                           +=====+      *   |
|              |     J21 J23     |                              +         *   |
|              |  +===+===+===+  |                                        *   |
|              |  | *   @@@ |  |                                        *   |
|              |  | *     |  |                                        *J1 |
|              |  +=+===+===+=+  |                                        *   |
|              |   J20 J22 J24   |                                        *   |
|              +=================+                                        *   |
|                                                +                        *   |
|                                                                         *   |
|                                                                         *   |
|       +                                                                1+==++
|                                                                        +===++
|                                                                   +   1#    |
|                                                                        #    |
|                                                                        # J2 |
|    +==+                 +=====+   +==+                +====+  +==+     #    |
+====+  +=================+     +===+  +================+    +==+  +=====+====+


                            CMOS Configuration:     

                    Cyls   Hds  Write  Landing Sec/Trk
                                PreComp  Zone
                    ----------------------------------
                    986    15     0       0       62

                    Yields: 420 Million Bytes 


                 7420AV are trademarks of Maxtor Corporation.
               AT is a registered trademark of IBM Corporation.
               Specifications subject to change without notice.
                    Copyright 1993, 1994 Maxtor Corporation.
                        Rev B    12/10/94    Anderson
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