DS25BR440TSQ National Semiconductor, DS25BR440TSQ Datasheet - Page 11
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DS25BR440TSQ
Manufacturer Part Number
DS25BR440TSQ
Description
Manufacturer
National Semiconductor
Datasheet
1.DS25BR440TSQ.pdf
(16 pages)
Specifications of DS25BR440TSQ
Number Of Elements
4
Number Of Receivers
4
Number Of Drivers
4
Input Type
CMOS
Operating Supply Voltage (typ)
3.3V
Differential Input High Threshold Voltage
100mV
Diff. Input Low Threshold Volt
-100mV
Output Type
Repeater
Differential Output Voltage
450mV
Transmission Data Rate
3125Mbps
Propagation Delay Time
0.6ns
Power Dissipation
2.44W
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
40
Lead Free Status / Rohs Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DS25BR440TSQ/NOPB
Manufacturer:
NSC
Quantity:
2 113
Functional Description
The DS25BR440 is a 3.125 Gbps Quad LVDS buffer opti-
mized for high-speed signal routing and repeating over lossy
FR-4 printed circuit board backplanes and balanced cables.
The DS25BR440 has a pre-emphasis control pin for each
output for switching the transmit pre-emphasis to ON and
Transmit Pre-emphasis Truth Table
Transmit Pre-emphasis Level Selection for an Output OUTn
Receive Equalization Truth Table
Receive Equalization Level Selection for an Input INn
CONTROL Pin (PEn) State
CONTROL Pin (EQn) State
0
1
0
1
OUTPUT OUTn, n = {0, 1, 2, 3}
INPUT INn, n = {0, 1, 2, 3}
11
OFF setting and an equalization control pin for each input for
switching the receive equalization to ON and OFF setting. The
following are the transmit pre-emphasis and receive equal-
ization truth tables.
Pre-emphasis Level
Equalization Level
OFF
OFF
ON
ON
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