SN65LVDM179, SN65LVDM180, SN65LVDM050, SN65LVDM051
HIGH-SPEED DIFFERENTIAL LINE DRIVERS AND RECEIVERS
SLLS324B – DECEMBER 1998 – REVISED MARCH 2000
Low-Voltage Differential Drivers and
SN65LVDM179D (Marked as DM179 or LVM179)
SN65LVDM179DGK (Marked as M79)
(TOP VIEW)
Receivers for Half-Duplex Operation
Signaling Rates up to 400 Mbps
Bus-Terminal ESD Exceeds 12 kV
Operates from a Single 3.3 V Supply
5
6
8
7
3
Y
Z
V
A
B
Z
Y
1
2
3
4
8
7
6
5
CC
R
D
R
D
A
B
2
Low-Voltage Differential Signaling with
Typical Output Voltages of 340 mV with a
50-Ω Load
GND
SN65LVDM180D (Marked as LVDM180)
Propagation Delay Times
– Driver: 1.7 ns Typ
(TOP VIEW)
9
– Receiver: 3.7 ns Typ
NC
R
V
V
A
B
Z
Y
1
2
3
4
5
6
7
14
13
12
11
10
9
CC
CC
5
Y
Z
D
10
Power Dissipation at 200 MHz
– Driver: 50 mW Typical
– Receiver: 60 mW Typical
4
3
RE
DE
RE
DE
12
11
D
A
B
2
LVTTL Input Levels are 5 V Tolerant
R
GND
GND
Driver is High Impedance When Disabled or
NC
8
With V
< 1.5 V
CC
Receiver has Open-Circuit Fail Safe
SN65LVDM050D (Marked as LVDM050)
Surface-Mount Packaging
– D Package (SOIC)
(TOP VIEW)
14
13
15
1Y
1Z
– DGK Package (MSOP) (’LVDM179 Only)
1D
1B
1A
V
CC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
12
9
1D
1Y
1Z
DE
2Z
DE
2D
10
11
description
2Y
2Z
1R
RE
2R
The
SN65LVDM179,
SN65LVDM180,
2
1
SN65LVDM050, andSN65LVDM051aredifferen-
tial line drivers and receivers that use low-voltage
differential signaling (LVDS) to achieve signaling
rates as high as 400 Mbps. These circuits are
similar to TIA/EIA-644 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 into a 50-Ω
load and allows double-terminated lines and
half-duplex operation. The receivers detect a
voltage difference of 100 mV with up to 1 V of
ground potential difference between a transmitter
and receiver.
3
1A
1B
2A
1R
2B
10 2Y
2D
4
5
RE
2R
GND
9
6
7
2A
2B
SN65LVDM051D (Marked as LVDM051)
(TOP VIEW)
14
13
15
1Y
1Z
1D
1B
1A
V
CC
1D
1Y
1
2
3
4
5
6
7
8
16
15
14
13
12
11
4
3
1DE
1R
2
1
1A
1B
1R
1DE
2R
1Z
2DE
2Z
10
11
9
2Y
2Z
2A
2D
The intended application of these devices and
signaling technique is half-duplex or multiplex
baseband data transmission over controlled
impedance media of approximately 100-Ω
characteristic impedance. The transmission
media may be printed-circuit board traces,
backplanes, or cables.
2B
10 2Y
2D
12
5
2DE
2R
6
7
GND
9
2A
2B
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.
Copyright 1998, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265