Rainbow Electronics DS92LV090A - Manual

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
DS92L
V090A
9
Channel
Bus
L
VDS
T
ransceiver
© 2001 National Semiconductor Corporation DS100111 www.national.com