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                             7541A IDE DRIVE
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KEY FEATURES:

  * <12ms average seek              * 64K on-board multi-segmented 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 * 4480 RPM Rotational speed 
  * Energy Star compliant           * MaxCache buffer management
  * Certified Windows NT Compatible * MTBF: >3000,000 Hrs.

SPECIFICATIONS:

Formatted capacity (LBA Mode): ............. 542,932,992 Bytes
                                             517.8 Megabytes
Bytes per sector: .......................... 512
Integrated Controller/Interface: ........... AT 
Actuator type: ............................. Voice Coil
Number of Disks: ........................... 1
Data Surfaces: ............................. 2
Data Heads: ................................ 2
Servo: ..................................... Embedded
Tracks per surface (user): ................. 4,086
Tracks per surface (total): ................ 4,104
Sectors per drive: ......................... 1,060,416
Track Density (average): ................... 4,232 tpi (Maximum)
Flux Density (average): .................... 61.42 kfci (Maximum)
Data Zones per Surface: .................... 10

Sectors per track:
        Zone 1  .................... 155
        Zone 2  .................... 152
        Zone 3  .................... 146
        Zone 4  .................... 142
        Zone 5  .................... 134
        Zone 6  .................... 128
        Zone 7  .................... 122
        Zone 8  .................... 108
        Zone 9  .................... 99
        Zone 10 .................... 91

PERFORMANCE (Typical):

Seek times* (ms)
     Track to track: ....................... <2
     Average: .............................. <12 **
     Maximum: .............................. <25

Average latency (ms): ...................... 6.7 
Spindle speed (+-0.1%): .................... 4,480 RPM
Controller overhead: ....................... 0.3 ms

Data transfer rate (Mbytes per sec)
  To/From Media (MB/sec): .................. 4.6 - 8.1
  To/From host without I/O CHRDY,
  PIO Mode 3 ............................... 11.1, 180ns

Start Time (Average): ...................... <8.5 sec 
Start Time (Maximum): ...................... <20 sec 
Stop Time (Average): ....................... <3 sec 
Stop Time (Maximum): ....................... <5 sec

Power Requirements (Average):

    Mode         +12VDC +-8%  +5VDC +-5%   Power
    ----         -----------  ----------  -------
    Spin-up        1.02A       317mA       7.95W**
    Read/Write*    172mA       437mA       4.25W
    Active*        167mA       397mA       3.98W
    Idle*          142mA       388mA       3.64W
    Standby*       0.95mA      103mA       0.53W
    Sleep*         0.96mA       54mA       0.28W

    Maximum power supply ripple allowed: 
    100 mV peak to peak, 0-20 MHz

Physical:

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

Environmental:

Temperature (Degrees C)
    Operating (stabilized).................. 5C to 50C
    Non-operating .......................... -40C to 60C
    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 non-recoverable errors)
      5-20Hz ............................... .049"
      20-300Hz ............................. 1.5G

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

Acoustic Noise
    Sound power (per ISO 7779) ............. 35 dBA
    Sound pressure ......................... 32.2 dBA

*   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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                       7541A 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 & J22 are factory reserved, do not use.
         A spare shunt is shipped between J23 & J24.

+----\    /---------------\      /--\   /-------------\      /--\   /--------+
|     ----                 ------    ---               ------    ---         | 
|                                                                         +---+
|                                                            +------+    -|   |
|  +                      V--------------------------------> ||:::::|    -|   |
|                +-----------------+                         +------+    -|   |
|                |     J21 J23     |                            +        -|   |
|                |  +-----------+  |                                     -|   |
|                |  | * 0 0 *** |  |                                     -|   |
|                |  | * 0 0 0 0 |  |                                     -|J1 |
|                |  +-----------+  |                                     -|   |
|                |   J20 J22 J24   |                                     -|   |
|                +-----------------+                                     -|   |
|                                                                        -|   |
|                                                                        -|   |
|                                                                       1 |   |
|                                                                         +---|
|                                                                        +----|
|    +                                                              +  1 |    |
|                                                                      2 |    |
|                                                                      3 | J2 |
|     ----                 ------    ---               ------    ---   4 |    |
+----/    \---------------/      \--/   \-------------/      \--/   \---------+


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Power and IDE interface cable connections:

  |                                    J1                         |
  |      J2        ___________________Data__________________      |
  | ____Power___  |  . . . . . . . . .   . . . . . . . . . .|     |
  |/            \=|  1 . . . . . . . . . . . . . . . . . . .|=====|
  || O  O  O  1 | |___________________   ___________________|     |
  ||____________|                                                 |
  | +5  G  G +12                                                  |
  |===============================================================|
   ===============================================================
       "Back" of typical Maxtor 7000A Series IDE Hard Drive
           Showing Data and Power connector orientation

          Red or Blue stripe on 40 pin ribbon cable=pin 1
          Power cable:  +5=Red  Grounds=Black  +12=Yellow

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The serial number is located on the lower left corner of the Maxtor Label.
This label is located on the side opposite the printed circuit board.
The serial number is also located on a barcoded label on the "front" of 
the drive, and also on the retail box.
The serial number is made up of alpha-numeric charaters, for example: A30025PR

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                            CMOS Configuration:     

                    Cyls   Hds  Write  Landing Sec/Trk
                                PreComp  Zone
                    ----------------------------------
                    1052   16     0       0       63


                 7541A is a trademark of Maxtor Corporation.
               AT is a registered trademark of IBM Corporation.
               Specifications subject to change without notice.
                      Copyright 1995 Maxtor Corporation.
                         Rev A    7/21/95    T.Brooker
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