DS25BR204TSQ/NOPB National Semiconductor, DS25BR204TSQ/NOPB Datasheet - Page 11

• Manufacturer Part Number: DS25BR204TSQ/NOPB
• Description: IC REPEATER 3.125GBPS 1:4 40LLP
• Manufacturer: National Semiconductor
• Type: Repeaterr

Specifications of DS25BR204TSQ/NOPB

• Tx/rx Type: LVDS
• Delay Time: 600ps
• Capacitance - Input: 1.7pF
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 185mA
• Mounting Type: Surface Mount
• Package / Case: 40-LLP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: DS25BR204TSQTR

Functional Description
The DS25BR204 is a 3.125 Gbps 1:4 LVDS repeater opti-
mized for high-speed signal routing and switching over lossy
FR-4 printed circuit board backplanes and balanced cables.
Input Select Truth Table
The DS25BR204 has a pre-emphasis control pin for each
output for switching the transmit pre-emphasis to ON and
OFF setting and an equalization control pin for each input for
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 (SEL_in) State
CONTROL Pin (PEn) State
CONTROL Pin (EQn) State
0
1
0
1
0
1
OUTPUT OUTn, n = {0, 1, 2, 3}
INPUT INn, n = {1, 2}
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The DS25BR204 SEL_in pin selects one out of two available
LVDS inputs. The following is the input select truth tables.
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
Input Selected
OFF
OFF
IN1
IN2
ON
ON
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