SN65LVDM179, SN65LVDM180
SN65LVDM050, SN65LVDM051
www.ti.com .................................................................................................................................................... SLLS324J–DECEMBER 1998–REVISED JULY 2009
HIGH-SPEED DIFFERENTIAL LINE DRIVERS AND RECEIVERS
1
FEATURES
SN65LVDM179D (Marked as DM179 or LVM179)
SN65LVDM179DGK (Marked as M79)
•
Low-Voltage Differential 50-Ω Line Drivers and
Receivers
(TOP VIEW)
5
6
8
7
•
Typical Full-Duplex Signaling Rates of 100
Mbps (See Table 1)
3
2
Y
Z
VCC
R
A
B
Z
Y
1
2
3
4
8
7
6
5
D
R
•
•
•
Bus-Terminal ESD Exceeds 12 kV
Operates From a Single 3.3-V Supply
D
A
B
GND
Low-Voltage Differential Signaling With Typical
Output Voltages of 340 mV With a 50-Ω Load
SN65LVDM180D (Marked as LVDM180)
SN65LVDM180PW (Marked as LVDM180)
(TOP VIEW)
•
•
Valid Output With as Little as 50-mV Input
Voltage Difference
9
NC
R
RE
VCC
VCC
A
1
2
3
4
5
6
7
14
13
12
11
10
9
5
Y
Z
Propagation Delay Times
D
10
4
3
–
–
Driver: 1.7 ns Typical
DE
RE
DE
D
B
Z
Receiver: 3.7 ns Typical
12
11
A
B
2
•
Power Dissipation at 200 MHz
R
GND
GND
Y
–
–
Driver: 50 mW Typical
NC
8
Receiver: 60 mW Typical
•
•
LVTTL Input Levels Are 5-V Tolerant
SN65LVDM050D (Marked as LVDM050)
SN65LVDM050PW (Marked as LVDM050)
(TOP VIEW)
Driver Is High Impedance When Disabled or
With VCC < 1.5 V
14
13
15
1Y
1Z
1D
•
Receiver Has Open-Circuit Failsafe
1B
1A
1R
VCC
1D
1Y
1Z
DE
2Z
1
2
3
4
5
6
7
8
16
15
14
13
12
11
12
9
DE
2D
10
11
DESCRIPTION
2Y
2Z
RE
2R
The
SN65LVDM179,
SN65LVDM180,
SN65LVDM050, and SN65LVDM051 are differential
line drivers and receivers that use low-voltage
differential signaling (LVDS) to achieve high signaling
rates. These circuits are similar to TIA/EIA-644
2
1
3
1A
1B
2A
1R
2B
GND
10 2Y
2D
4
5
RE
2R
9
6
7
2A
2B
standard
compliant
devices
(SN65LVDS)
counterparts, except that the output current of the
drivers is doubled. This modification provides a
minimum differential output voltage magnitude of 247
mV across a 50-Ω load simulating two transmission
lines in parallel. This allows having data buses with
more than one driver or with two line termination
resistors. The receivers detect a voltage difference of
50 mV with up to 1 V of ground potential difference
between a transmitter and receiver.
SN65LVDM051D (Marked as LVDM051)
SN65LVDM051PW (Marked as LVDM051)
(TOP VIEW)
14
13
15
1Y
1Z
1D
1B
1A
1R
VCC
1D
1Y
1
2
3
4
5
6
7
8
16
15
14
13
12
11
4
3
1DE
1R
2
1
1A
1B
1DE
2R
1Z
2DE
2Z
10
11
The intended application of these devices and
signaling techniques is point-to-point half duplex,
baseband data transmission over
impedance media of approximately 100
characteristic impedance.
9
2Y
2Z
2A
2D
2B
GND
10 2Y
2D
12
5
a
controlled
2DE
2R
6
7
9
Ω
2A
2B
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 1998–2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.