SN65LVDS22
SN65LVDM22
www.ti.com
SLLS315C – DECEMBER 1998 – REVISED JUNE 2002
DUAL MULTIPLEXED LVDS REPEATERS
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
Meets or Exceeds the Requirements of ANSI
TIA/EIA-644-1995 Standard
Designed for Clock Rates up to 200 MHz
(400 Mbps)
Designed for Data Rates up to 250 Mbps
Pin Compatible With SN65LVDS122 and
SN65LVDT122, 1.5 Gbps 2x2 Crosspoint
Switch From TI
ESD Protection Exceeds 12 kV on Bus Pins
Operates From a Single 3.3-V Supply
Low-Voltage Differential Signaling With
Output Voltages of 350 mV Into:
– 100-Ω Load (SN65LVDS22)
– 50-Ω Load (SN65LVDM22)
Propagation Delay Time; 4 ns Typ
Power Dissipation at 400 Mbps of 150 mW
Bus Pins Are High Impedance When Disabled
or With VCC Less Than 1.5 V
LVTTL Levels Are 5 V Tolerant
Open-Circuit Fail Safe Receiver
DESCRIPTION
The SN65LVDS22 and SN65LVDM22 are differential
line drivers and receivers that use low-voltage
differential signaling (LVDS) to achieve signaling
rates as high as 400 Mbps. The receiver outputs can
be switched to either or both drivers through the
multiplexer control signals S0 and S1. This allows the
flexibility to perform splitter or signal routing functions
with a single device.
The TIA/EIA-644 standard compliant electrical
interface provides a minimum differential output
voltage magnitude of 247 mV into a 100-Ω load and
receipt of 100 mV signals with up to 1 V of ground
potential difference between a transmitter and
receiver. The SN65LVDM22 doubles the output drive
current to achieve LVDS levels with a 50-Ω load.
SN65LVDS22D and SN65LVDS22PW (Marked as LVDS22)
SN65LVDM22D and SN65LVDM22PW (Marked as LVDM22)
(TOP VIEW)
1B
1A
S0
1DE
S1
2A
2B
GND
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
VCC
VCC
1Y
1Z
2DE
2Z
2Y
GND
logic diagram (positive logic)
1A
1B
2
+
_
1
14
0
13
1
1DE
2DE
S0
S1
2B
1Z
4
12
3
5
10
0
2A
1Y
6
11
+
_
7
1
2Y
2Z
MUX TRUTH TABLE
INPUT
OUTPUT
FUNCTION
S1
S0
1Y/1Z
2Y/2Z
0
0
1A/1B
1A/1B
Splitter
0
1
2A/2B
2A/2B
Splitter
1
0
1A/1B
2A/2B
Router
1
1
2A/2B
1A/1B
Router
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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1998–2002, Texas Instruments Incorporated
SN65LVDS22
SN65LVDM22
www.ti.com
SLLS315C – DECEMBER 1998 – REVISED JUNE 2002
The intended application of these devices and signaling technique is for both point-to-point baseband (single
termination) and multipoint (double termination) data transmissions over controlled impedance media. The
transmission media may be printed-circuit board traces, backplanes, or cables. (Note: The ultimate rate and
distance of data transfer is dependent upon the attenuation characteristics of the media, the noise coupling to the
environment, and other application specific characteristics).
The SN65LVDS22 and SN65LVDM22 are characterized for operation from –40°C to 85°C.
2
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SN65LVDS22
SN65LVDM22
www.ti.com
SLLS315C – DECEMBER 1998 – REVISED JUNE 2002
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
EQUIVALENT INPUT AND OUTPUT SCHEMATIC DIAGRAMS
VCC
VCC
300 kΩ
50 Ω
S0, S1
Input
50 Ω
1DE, 2DE
Input
7V
300 kΩ
7V
VCC
300 kΩ
VCC
300 kΩ
5Ω
10 kΩ
A Input
B Input
7V
7V
Y or Z
Output
7V
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted) (1)
UNIT
Supply voltage range, VCC (see Note
Voltage range
Electrostatic discharge
(2))
–0.5 V to 4 V
(DE, S0, S1)
–0.5 V to 6 V
(Y, Z, A, and B)
–0.5 V to 4 V
A, B, Y, Z and GND (see Note
(3))
All pins
Class 3, A:5 kV, B:500 V
Continuous power dissipation
See Dissipation Rating Table
Storage temperature range
–65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
(1)
(2)
(3)
Class 3, A:12 kV, B:600 V
260°C
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
All voltage values, except differential I/O bus voltages, are with respect to network ground terminal.
Tested in accordance with MIL-STD-883C Method 3015.7.
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SN65LVDS22
SN65LVDM22
www.ti.com
SLLS315C – DECEMBER 1998 – REVISED JUNE 2002
DISSIPATION RATING TABLE
(1)
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING FACTOR (1)
ABOVE TA = 25°C
TA = 85°C
POWER RATING
D
1110 mW
8.9 mW/°C
577 mW
PW
839 mW
6.7 mW/°C
437 mW
This is the inverse of the junction-to-ambient thermal resistance when board-mounted and with no air
flow.
RECOMMENDED OPERATING CONDITIONS
VCC
Supply voltage
VIH
High-level input voltage
S0, S1, 1DE, 2DE
VIL
Low-level input voltage
S0, S1, 1DE, 2DE
|VID|
Magnitude of differential input voltage
VIC
Common-mode input voltage (see Figure 1)
TA
Operating free-air temperature
MIN
NOM
MAX
3
3.3
3.6
2
UNIT
V
V
0.1
V
ID
2
2.4–
0.8
V
0.6
V
V
V
ID
2
VCC–0.8
V
85
°C
40
TIMING REQUIREMENTS
PARAMETER
tsu
Input to select setup time
th
Input to select hold time
tswitch
Select to switch output
MIN NOM MAX
UNIT
1.6
ns
See Figure 6
1
3.2
COMMON-MODE INPUT VOLTAGE
vs
DIFFERENTIAL INPUT VOLTAGE
VIC – Common-Mode Input Voltage – V
2.5
MAX at VCC > 3.15 V
MAX at VCC = 3 V
2
1.5
1
0.5
Min
0
0
0.1
0.2
0.3
0.4
0.5
0.6
VID – Differential Input Voltage – V
Figure 1. Common-Mode Input Voltage vs Differential Input Voltage
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ns
5
ns
SN65LVDS22
SN65LVDM22
www.ti.com
SLLS315C – DECEMBER 1998 – REVISED JUNE 2002
RECEIVER ELECTRICAL CHARACTERISTICS
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VIT+
Positive-going differential input voltage threshold
VIT–
Negative-going differential input voltage threshold
II
Input current (A or B inputs)
II(OFF
Power-off input current (A or B inputs)
MIN
TYP
MAX
UNIT
100
mV
100
VI = 0 V
mV
2
VI = 2.4 V
20
1.2
VCC = 0 V
)
20
µA
µA
RECEIVER/DRIVER ELECTRICAL CHARACTERISTICS
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VOD
Differential output voltage magnitude
∆VOD
Change in differential output voltage magnitude
between logic states
VOC(SS)
Steady-state common-mode output voltage
∆VOC(SS)
Change in steady-state common-mode output
voltage between logic states
VOC(PP)
Peak-to-peak common-mode output voltage
247
See Figure 2
RL = 100 Ω ('LVDS22),
RL = 50 Ω ('LVDM22)
See Figure 3
No Load
ICC
Supply current
High-level input current
IIL
Low-level input current
DE
mV
–50
50
mV
1.125
1.37
5
3
DE
RL = 50 Ω ('LVDM22)
21
27
20
–10
10
IO(OFF)
Power-off output current
–10
–10
CIN
Input capacitance
(1)
0.015
±1
VO = 0 V or VCC
0.015
±1
0.015
±1
VO = 3.6 V
µA
mA
–10
VOD = 600 mV
VCC = 0 V,
µA
–10
VOY or VOZ = 0 V, VOD = 0 V ('LVDM22)
High-impedance output current
mA
6
–10
Short-circuit output current
IOZ
mV
20
VOY or VOZ = 0 V, VOD = 0 V ('LVDS22)
IOS
150
13
VIL = 0.8 V
S0, S1
mV
RL = 100 Ω ('LVDS22)
3
V
50
12
VIH = 5 V
S0, S1
UNIT
454
–50
340
8
Disabled
IIH
MIN TYP (1) MAX
3
µA
µA
pF
All typical values are at 25°C and with a 3.3-V supply.
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SN65LVDS22
SN65LVDM22
www.ti.com
SLLS315C – DECEMBER 1998 – REVISED JUNE 2002
DIFFERENTIAL RECEIVER TO DRIVER SWITCHING CHARACTERISTICS
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP (1)
MAX
UNIT
tPLH
Differential propagation delay time, low-to-high
4
6
ns
tPHL
Differential propagation delay time, high-to-low
4
6
ns
tsk(p)
Pulse skew (|tPHL - tPLH|)
tr
Transition time, low-to-high
SN65LVDS22
tr
Transition time, low-to-high
SN65LVDM22
tf
Transition time, high-to-low
tf
Transition time, high-to-low
tPHZ
Propagation delay time, high-level-to-high-impedance output
tPLZ
Propagation delay time, low-level-to-high-impedance output
tPZH
Propagation delay time, high-impedance-to-high-level output
tPZL
Propagation delay time, high-impedance-to-low-level output
0.2
CL = 10 pF, See Figure 4
1.5
ns
0.8
1.3
ns
SN65LVDS22
1
1.5
ns
SN65LVDM22
0.8
1.3
ns
4
10
ns
5
10
ns
5
10
ns
6
10
ns
See Figure 5
tPHL_R1_Dx
tPLH_R1_Dx
tPHL_R2_Dx
0.2
0.2
Channel-to-channel skew, receiver to driver (2)
0.2
tPLH_R2_Dx
fmax
(1)
(2)
ns
1
0.2
Maximum operating frequency
All channels switching
200
All typical values are at 25°C and with a 3.3-V supply.
These parametric values are measured over supply voltage and temperature ranges recommended for the device.
PARAMETER MEASUREMENT INFORMATION
DE
Y
A
Pulse
Generator
B
VI(B)
1.4 V
VI(A)
1V
VOD
Z
Input
(see Note A)
RL (see Note B)
CL = 10 pF
(2 Places)
(see Note C)
100%
80%
VOD
0
20%
0%
tf
tr
A.
All input pulses are supplied by a generator having the following characteristics: tr or tf ≤ 1 ns, pulse repetition rate
(PRR) = 50 Mpps, pulse width = 10 ±0.2 ns.
B.
RL = 100 Ω or 50 Ω ±1%
C.
CL includes instrumentation and fixture capacitance within 6 mm of the D.U.T.
Figure 2. Test Circuit and Voltage Definitions for the Differential Output Signal
6
ns
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MHz
SN65LVDS22
SN65LVDM22
www.ti.com
SLLS315C – DECEMBER 1998 – REVISED JUNE 2002
PARAMETER MEASUREMENT INFORMATION (continued)
DE
A
Y
B
Z
Pulse
Generator
RL (see Note B)
(2 Places)
VI(B)
1.4 V
VI(A)
1V
VOC(PP)
Input
(see Note A)
VOC
CL = 10 pF
(2 Places)
(see Note C)
(see Note D)
VOC(SS)
VCC
A.
All input pulses are supplied by a generator having the following characteristics: tr or tf ≤ 1 ns, pulse repetition rate
(PRR) = 50 Mpps, pulse width = 10 ±0.2 ns.
B.
RL = 100 Ω or 50 Ω ±1%
C.
CL includes instrumentation and fixture capacitance within 6 mm of the D.U.T.
D.
The measurement of VOC(PP) is made on test equipment with a -3 dB bandwidth of at least 300 MHz.
Figure 3. Test Circuit and Definitions for the Driver Common-Mode Output Voltage
DE
Y
A
Pulse
Generator
R
D
RL (see Note A)
B
Z
10 pF
10 pF
VIB
1.4 V
0-V Differential
1.2-V CM
VIA
1V
tPLH
tPHL
VOZ
1.4 V
0-V Differential
1.2-V CM
VOY
1V
80%
0-V Differential
20%
VOY – VOZ
tr
tf
A.
RL = 100 Ω or 50 Ω ±1%
B.
All input pulses are supplied by a generator having the following characteristics: pulse repetition rate (PRR) = 50
Mpps, pulse width = 10 ±0.2 ns.
Figure 4. Differential Receiver to Driver Propagation Delay and Driver Transition Time Waveforms
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SN65LVDS22
SN65LVDM22
www.ti.com
SLLS315C – DECEMBER 1998 – REVISED JUNE 2002
PARAMETER MEASUREMENT INFORMATION (continued)
DE
1 V or 1.4 V
R
1.2 V
RL/2
(see Note A)
A
1.2 V
D
B
RL/2
(see Note A)
2V
DE
1.4 V
0.8 V
tPZH
tPHZ
≈1.4 V
VOY or VOZ
1.25 V
1.2 V
tPZL
tPLZ
1.2 V
1.15 V
VOY or VOZ
≈1 V
A.
RL = 100 Ω or 50 Ω ±1%
B.
All input pulses are supplied by a generator having the following characteristics: pulse repetition rate (PRR) = 0.5
Mpps, pulse width = 500 ±10 ns.
Figure 5. Enable and Disable Timing Circuit
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SN65LVDS22
SN65LVDM22
www.ti.com
SLLS315C – DECEMBER 1998 – REVISED JUNE 2002
PARAMETER MEASUREMENT INFORMATION (continued)
1A/B
2A/B
tsu
th
S0/1
Outputs
Out 1 or 2
Out 1 or 2
tsu
DE
NOTE: tsu and th times specify that data must be in a stable state before and after MUX control switches.
Figure 6. Input-to-Select for Both Rising and Falling Edge Setup and Hold Times
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SN65LVDS22
SN65LVDM22
www.ti.com
SLLS315C – DECEMBER 1998 – REVISED JUNE 2002
TYPICAL CHARACTERISTICS
SN65LVDS22
HIGH-LEVEL OUTPUT VOLTAGE
vs
HIGH-LEVEL OUTPUT CURRENT
4
VCC = 3.3 V
TA = 25°C
V OL − Low-Level Output Voltage − V
V OH − High-Level Ouptut Voltage − V
3.5
SN65LVDS22
LOW-LEVEL OUTPUT VOLTAGE
vs
LOW-LEVEL OUTPUT CURRENT
3
2.5
2
1.5
1
VCC = 3.3 V
TA = 25°C
3
2
1
.5
0
0
−4
−3
−2
−1
0
0
IOH − High-Level Output Current − mA
Figure 7.
Figure 8.
SN65LVDM22
HIGH-LEVEL OUTPUT VOLTAGE
vs
HIGH-LEVEL OUTPUT CURRENT
SN65LVDM22
LOW-LEVEL OUTPUT VOLTAGE
vs
LOW-LEVEL OUTPUT CURRENT
4
VCC = 3.3 V
TA = 25°C
VCC = 3.3 V
TA = 25°C
3
V OL − Low-Level Output Voltage − V
V OH − High-Level Output Voltage − V
6
IOL − Low-Level Output Current − mA
3.5
2.5
2
1.5
1
.5
0
3
2
1
0
−8
−6
−4
−2
0
0
IOH − High-Level Output Current − mA
Figure 9.
10
4
2
2
4
6
Figure 10.
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8
10
IOL − Low-Level Output Current − mA
12
SN65LVDS22
SN65LVDM22
www.ti.com
SLLS315C – DECEMBER 1998 – REVISED JUNE 2002
APPLICATION INFORMATION
FAIL SAFE
One of the most common problems with differential signaling applications is how the system responds when no
differential voltage is present on the signal pair. The LVDS receiver is like most differential line receivers, in that
its output logic state can be indeterminate when the differential input voltage is between –100 mV and 100 mV
and within its recommended input common-mode voltage range. However, TI's LVDS receiver is different in how
it handles the open-input circuit situation.
Open-circuit means that there is little or no input current to the receiver from the data line itself. This could be
when the driver is in a high-impedance state or the cable is disconnected. When this occurs, the LVDS receiver
pulls each line of the signal pair to near VCC through 300-kΩ resistors as shown in Figure 11. The fail-safe
feature uses an AND gate with input voltage thresholds at about 2.3 V to detect this condition and force the
output to a high-level regardless of the differential input voltage.
VCC
300 kΩ
300 kΩ
A
Rt = 100 Ω (Typ)
Y
B
VIT ≈ 2.3 V
Figure 11. Open-Circuit Fail Safe of the LVDS Receiver
It is only under these conditions that the output of the receiver is valid with less than a 100 mV differential input
voltage magnitude. The presence of the termination resistor, Rt, does not affect the fail-safe function as long as it
is connected as shown in Figure 11. Other termination circuits may allow a dc current to ground that could defeat
the pullup currents from the receiver and the fail-safe feature.
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PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
SN65LVDM22D
ACTIVE
SOIC
D
16
40
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
LVDM22
SN65LVDM22DG4
ACTIVE
SOIC
D
16
40
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
LVDM22
SN65LVDM22PW
ACTIVE
TSSOP
PW
16
90
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
LVDM22
SN65LVDS22D
ACTIVE
SOIC
D
16
40
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
LVDS22
SN65LVDS22DR
ACTIVE
SOIC
D
16
2500
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
LVDS22
SN65LVDS22PW
ACTIVE
TSSOP
PW
16
90
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
LVDS22
SN65LVDS22PWR
ACTIVE
TSSOP
PW
16
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
LVDS22
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of