DS90LV019TMTC National Semiconductor, DS90LV019TMTC Datasheet - Page 8

• Manufacturer Part Number: DS90LV019TMTC
• Description: TRANCEIVER LVDS 85MHZ, SMD, 90LV019
• Manufacturer: National Semiconductor

Specifications of DS90LV019TMTC

• Supply Voltage Range: 3V To 3.6V
• Digital Ic Case Style: TSSOP
• No. Of Pins: 14
• Operating Temperature Range: -40°C To +85°C
• Svhc: No SVHC (15-Dec-2010)
• Operating Temperature Max: 85°C
• Operating: RoHS Compliant
• Base Number: 90
• Data Rate: 100Mbps
• Rohs Compliant: Yes

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Applications Information
X = High or Low logic state
Z = High impedance state
L = Low state
H = High state
• Balanced cables (e.g., twisted pair) are usually better
• For cable distances
DE
H
H
H
L
than unbalanced cables (ribbon cable, simple coax) for
noise reduction and signal quality.
work effectively. For distances 0.5m
(category 3) twisted pair cable works well and is readily
available and relatively inexpensive. For distances
mended.
>
10m, and high data rates CAT 5 twisted pair is recom-
Pin Name
INPUTS
R
DO
GND
2
V
RI
D
RE
DE
OUT
CC
IN
>
±
TABLE 2. Transmitter Mode
±
&
DI
H
X
L
>
0.8
<
0.5m, most cables can be made to
11, 12
Pin #
9, 10
14
2
4
8
1
7
DO+
H
L
X
Z
FULL DUPLEX MODE
MODE SELECTED
TRI-STATE MODE
RECEIVER MODE
OUTPUTS
DRIVER MODE
(Continued)
d
Input/Output
TABLE 4. Device Pin Description
10m, CAT 3
TABLE 1. Functional Table
DO−
NA
NA
O
O
H
X
Z
L
I
I
I
I
8
TTL Driver Input
LVDS Driver Outputs
LVDS Receiver Inputs
TTL Receiver Output
Receiver Enable TTL Input (Active Low)
Driver Enable TTL Input (Active High)
Ground
Power Supply (3.3V
• There are three Fail-Safe scenarios, open input pins,
X = High or Low logic state
Z = High impedance state
L = Low state
H = High state
shorted inputs pins and terminated input pins. The first
case is guaranteed for DS90LV019. A HIGH state on
R
(one to V
Input Fail-Safe Circuit). R1 and R2 should be R
the loading to the LVDS driver . R
the impedance of the cable.
RE
H
OUT
L
L
L
DE
H
H
L
L
pin can be achieved by using two external resistors
CC
and one to GND) per Figure 10 (Terminated
100 mV
TABLE 3. Receiver Mode
±
INPUTS
Description
RE
0.3V or 5.0V
H (
L (
H
H
L
L
(RI+) − (RI−)
<
>
>
−100 mV)
+100 mV)
&
X
>
−100 mV
±
0.5V)
T
is selected to match
OUTPUT
T
H
X
L
Z
to limit