Rainbow-electronics DS92LV090A Uživatelský manuál

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DS92LV090A
9 Channel Bus LVDS Transceiver
General Description
The DS92LV090A is one in a series of Bus LVDS transceiv-
ers designed specifically for the high speed, low power
proprietary backplane or cable interfaces. The device oper-
ates from a single 3.3V power supply and includes nine
differential line drivers and nine receivers. To minimize bus
loading, the driver outputs and receiver inputs are internally
connected. The separate I/O of the logic side allows for loop
back support. The device also features a flow through pin out
which allows easy PCB routing for short stubs between its
pins and the connector.
The driver translates 3V TTL levels (single-ended) to differ-
ential Bus LVDS (BLVDS) output levels. This allows for high
speed operation, while consuming minimal power with re-
duced EMI. In addition, the differential signaling provides
common mode noise rejection of
±
1V.
The receiver threshold is less than
±
100 mV over a
±
1V
common mode range and translates the differential Bus
LVDS to standard (TTL/CMOS) levels. (See Applications
Information Section for more details.)
Features
n Bus LVDS Signaling
n 3.2 nanosecond propagation delay max
n Chip to Chip skew
±
800ps
n Low power CMOS design
n High Signaling Rate Capability (above 100 Mbps)
n 0.1V to 2.3V Common Mode Range for V
ID
= 200mV
n
±
100 mV Receiver Sensitivity
n Supports open and terminated failsafe on port pins
n 3.3V operation
n Glitch free power up/down (Driver & Receiver disabled)
n Light Bus Loading (5 pF typical) per Bus LVDS load
n Designed for Double Termination Applications
n Balanced Output Impedance
n Product offered in 64 pin TQFP package
n High impedance Bus pins on power off (V
CC
= 0V)
n Driver Channel to Channel skew (same device) 230ps
typical
n Receiver Channel to Channel skew (same device)
370ps typical
Simplified Functional Diagram
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
DS100111-1
February 2001
DS92LV090A 9 Channel Bus LVDS Transceiver
© 2001 National Semiconductor Corporation DS100111 www.national.com
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Shrnutí obsahu

Strany 1 - DS92LV090A

DS92LV090A9 Channel Bus LVDS TransceiverGeneral DescriptionThe DS92LV090A is one in a series of Bus LVDS transceiv-ers designed specifically for the h

Strany 2 - Pinout Description

Connection DiagramPinout DescriptionPin Name Pin # Input/Output DescriptionsDO+/RI+ 27, 31, 35, 37, 41,45, 47, 51, 55I/O True Bus LVDS Driver Outputs

Strany 3 - DC Electrical Characteristics

Absolute Maximum Ratings (Notes 1, 2)If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales Office/Distr

Strany 4 - AC Electrical Characteristics

DC Electrical Characteristics (Continued)Over recommended operating supply voltage and temperature ranges unless otherwise specified (Notes 2, 3)Symbo

Strany 5

AC Electrical Characteristics (Continued)Over recommended operating supply voltage and temperature ranges unless otherwise specified (Note 6)Symbol Pa

Strany 6

Test Circuits and Timing WaveformsDS100111-3FIGURE 1. Differential Driver DC Test CircuitDS100111-4FIGURE 2. Differential Driver Propagation Delay and

Strany 7

Test Circuits and Timing Waveforms (Continued)DS100111-6FIGURE 4. Driver TRI-STATE Delay Test CircuitDS100111-7FIGURE 5. Driver TRI-STATE Delay Wavefo

Strany 8

Test Circuits and Timing Waveforms (Continued)Typical Bus Application ConfigurationsDS100111-10FIGURE 8. Receiver TRI-STATE Delay Test CircuitDS100111

Strany 9 - Order Number DS92LV090ATVEH

Physical Dimensions All dimensions are in millimetersLIFE SUPPORT POLICYNATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE

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