MAX9150EUI-T Maxim Integrated Products, MAX9150EUI-T Datasheet - Page 6

• Manufacturer Part Number: MAX9150EUI-T
• Description: LVDS Repeater 0.45V 28-Pin TSSOP T/R
• Manufacturer: Maxim Integrated Products

Specifications of MAX9150EUI-T

• Package: 28TSSOP
• Number Of Drivers: 10
• Transmission Data Rate: 400 Mbps
• Maximum Propagation Delay Time: 3.5 ns
• Differential Input Low Threshold Voltage: -0.1 V
• Differential Input High Threshold Voltage: 0.1 V
• Typical Operating Supply Voltage: 3.3 V

Low-Jitter, 10-Port LVDS Repeater
The LVDS interface standard is a signaling method
intended for point-to-point communication over a con-
trolled impedance medium, as defined by the
ANSI/TIA/EIA-644 and IEEE 1596.3 standards. The
LVDS standard uses a lower voltage swing than other
common communication standards, achieving higher
data rates with reduced power consumption while
reducing EMI emissions and system susceptibility to
noise.
The MAX9150 is a 400Mbps, 10-port LVDS repeater
intended for high-speed, point-to-point, low-power
applications. This device accepts an LVDS input and
repeats it on 10 LVDS outputs. The device is capable of
detecting differential signals as low as 100mV and as
high as 1V within a 0 to 2.4V input voltage range. The
LVDS standard specifies an input voltage range of 0 to
2.4V referenced to ground.
The MAX9150 outputs use a current-steering configura-
tion to generate a 5mA to 9mA output current. This cur-
rent-steering approach induces less ground bounce
and no shoot-through current, enhancing noise margin
and system speed performance. The driver outputs are
short-circuit current limited, and are high impedance
(to ground) when PWRDN = low or the device is not
powered. The outputs have a typical differential resis-
tance of 240Ω.
The MAX9150 current-steering architecture requires a
resistive load to terminate the signal and complete the
6
1, 3, 11, 13,
2, 4, 12, 14,
16, 18, 20,
15, 17, 19,
24, 26, 28
23, 25, 27
_______________________________________________________________________________________
6, 9, 21
10, 22
PIN
5
7
8
DO6+, DO5+, DO4+, DO3+
DO2-, DO1-, DO10-, DO9-,
DO6-, DO5-, DO4-, DO3-
DO2+, DO1+, DO10+,
DO9+, DO8+, DO7+,
Detailed Description
DO8-, DO7-,
PWRDN
NAME
RIN+
GND
RIN-
V
CC
Differential LVDS Outputs. Connect a 100Ω resistor across each of the output
pairs (DO_+ and DO_-) adjacent to the IC, and connect a 100Ω resistor at the
input of the receiving circuit.
Power Down. Drive PWRDN low to disable all outputs and reduce supply current
to 60µA. Drive PWRDN high for normal operation.
Ground
Power. Bypass each V
LVDS Receiver Inputs. RIN+ and RIN- are high-impedance inputs. Connect a
resistor from RIN+ to RIN- to terminate the input signal.
transmission loop. Because the device switches the
direction of current flow and not voltage levels, the out-
put voltage swing is determined by the total value of
the termination resistors multiplied by the output cur-
rent. With a typical 6.4mA output current, the MAX9150
produces a 320mV output voltage when driving a trans-
mission line terminated at each end with a 100Ω termi-
nation resistor (6.4mA x 50Ω = 320mV). Logic states
are determined by the direction of current flow through
the termination resistors.
Fail-safe is a receiver feature that puts the output in a
known logic state (high) under certain fault conditions.
The MAX9150 outputs are differential high when the
inputs are undriven and open, terminated, or shorted
(Table 1).
Note: V
Table 1. Input/Output Function Table
+100mV
-100mV
Open
Short
Terminated
CC
High = 450mV > V
Low = -250mV > V
pin to GND with 0.1µF and 1nF ceramic capacitors.
ID
= RIN+ - RIN-, V
INPUT, V
FUNCTION
ID
Undriven
OD
OD
OD
> 250mV
> -450mV
= DO_+ - DO_-
Pin Description
OUTPUTS, V
High
High
High
High
Low
Fail-Safe
OD