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PDF LXT915 Data sheet ( Hoja de datos )
| Número de pieza | LXT915 | |
| Descripción | Simple Quad Ethernet Repeater | |
| Fabricantes | Intel | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LXT915 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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( DataSheet : www.DataSheet4U.com )
LXT915
Simple Quad Ethernet Repeater
Datasheet
The LXT915 is an integrated multi-port repeater designed for mixed-media networks. It
provides all the active circuitry required for the repeater function in a single CMOS device. It
includes one Attachment Unit Interface (AUI) port and four 10BASE-T transceivers. The AUI
port allows connection of an external transceiver (10BASE-2, 10BASE-5, 10BASE-T or
FOIRL) or a drop cable. The 10BASE-T transceivers are entirely self-contained with internal
filters that simplify the design work required for FCC-compliant EMI performance.
An Inter-Repeater Backplane (IRB) interface allows 128 or more 10BASE-T ports to be
cascaded, creating a large single-segment multi-port repeater.
The LXT915 requires only a single 5-volt power supply due to its advanced CMOS fabrication
process.
Applications
s Remote or Stand-alone Unmanaged Hubs s Stackable Unmanaged Hubs
Product Features
s Four integrated 10BASE-T transceivers s Synchronous or asynchronous Inter-
and one AUI transceiver on a single chip
Repeater Backplane supports “hot
s Six integrated LED drivers with four
swapping”
unique operational modes
s Inter-repeater backplane allows cascaded
s On-chip transmit and receive filtering
repeaters, linking 128 or more 10BASE-T
s Automatic polarity detection and correction ports
s Packaged in 64-pin PQFP
As of January 15, 2001, this document replaces the Level One document
LXT915 — Simple Quad Ethernet Repeater.
Order Number: 249w3w4w3-.0D0a2taSheet4U.com
February 2001
www.DataSheet4U.com
1 page  
Simple Quad Ethernet Repeater — LXT915
Revision History
Date
Revision
February 2001 002
Page
26
Description
I/O Electrical Characteristics table: Supply current
Under Max: Change value from 180 to 240.
Under Test Conditions: Add text: “100Ω test load, no LEDs”.
Add table note to value: Supply current may vary depending on the
transformer, LED, and resistor selections.
Swapped values for VIH and VIHRESET.
Datasheet
5
5 Page 
Simple Quad Ethernet Repeater — LXT915
Table 5. LXT915 Power Supply Signal Descriptions
Pin Symbol I/O
Description
15
16
37
43
55
56
VCC
Power Supply. These pins each require a +5 VDC power supply. These various pins may be
_ supplied from a single power source, but special de-coupling requirements may apply. Each VCC
pin must be within ±0.3 V of every other VCC pin.
57
58
6
9
23
25
27
34
GND
_
Ground. These pins provide ground return paths for the various VCC power supply pins. Connect
these pins to external ground (mandatory).
40
46
64
26 RBIAS
I
Bias. This pin provides bias current for internal circuitry. Connect this pin to ground through an
external 12.4k 1% resistor.
Datasheet
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LXT915.PDF ] | |
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