Datasheet

13
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Revised 4-12 reference purposes only. and millimeters unless Mexico/C. Am.: [phone] France: [phone]
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Ultra ATA Bus Connectors, .025 [0.64] Centerline Ribbon Cable
Ribbon Cable Interconnect Solutions
.025 [0.64] Centerline Ribbon Cable Connectors Ultra ATA Bus Connectors
Product Facts
■ IDC termination
■ B
ackward compatible with
current IDE Interfaces
■ Improved signal integrity:
1 to 1 signal to ground ratio
■ Improved crosstalk when
compared to existing IDE
Cable Assembly
■ Color coded connectors
for “System board,” and
“Master HDD” and
“Slave HDD”
■ Cable impedance 80 ohms
■ Up to 3 connectors per cable
assembly
■ 15 microinches gold plating
■ Recognized under the
Component Program
of the Underwriters
Laboratories, Inc.
UL File No. E28476
■ Certified by the
Canadian Standards
Association,
File No. LR 7189
■ Terminates 30 AWG solid or
stranded PVC insulated 80
conductor ribbon cable
R
R
Ultra ATA is the next genera-
tion IDE (Integrated Drive
Electronics) bus. The current
IDE bus has a maximum
data transfer rate of about
16.5 MB/second. As the bus
speeds and disk drive per-
formances increase, the
cable assembly between
the motherboard and hard
drive becomes a limiting
factor in data transfer from
the drive.
The Ultra ATA connector
and cable assembly from
TE provide the customer
with improved electrical
performance by creating a
1:1 signal-to-ground ratio.
The connector design incor-
porates an IDC bus bar to
common the 40 additional
ground signals. The cable is
.025" centerline PVC ribbon
cable. The connector is fully
backward compatible with
existing 40-position headers
with pin 20 removed on
motherboards and disk
drives.
The new connectors are
color coded to identify:
1. system board connector
2. primary or master hard
drive connector
3. slave drive connector
Standard Issues
The Ultra ATA cable per-
formance specification is
part of the Small Form
Factor Committee No. 8049.
Compaq Computer and
Western Digital are the
major sponsors of the
standard.
Contacts Available:
■ 80 position IDC contact
terminations
■ 40 signal contacts
■ 40 ground terminations to
special IDC bus bar