Texas Instruments SN65LVDS22D, SN65LVDS22DR, SN65LVDM22D, SN65LVDM22DR Datasheet

SN65LVDS22, SN65LVDM22

DUAL MULTIPLEXED LVDS REPEATERS

SLLS315– DECEMBER 1998

1B
1A
S0

1DE

S1
2A
2B

GND

D PACKAGE

(TOP VIEW)

1

16

2

15

3

14

4

13

5

12

6

11

7

10

8

9

0

1

V

CC

V

CC

1Y
1Z
2DE
2Z
2Y
GND

D

Meets or Exceeds the Requirements of
ANSI TIA/EIA–644–1995 Standard

D

Designed for Signaling Rates Up to
400 Mbit/s

D

ESD Protection Exceeds 12 kV on Bus Pins

D

Operates from a Single 3.3-V Supply

D

Low-Voltage Differential Signaling with
Output Voltages of 350 mVinto:
– 100-Ω Load (SN65LVDS22)
– 50-Ω Load (SN65LVDM22)

D

Propagation Delay Time; 4 ns Typ

D

Power Dissipation at 400 Mbit/s of 150 mW

D

Bus Pins are High Impedance When
Disabled or With V

D

LVTTL Levels are 5 V Tolerant

D

Open-Circuit Fail Safe Receiver

Less Than 1.5 V

CC

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

logic diagram (positive logic)

2
1

4
12
3

5

+
_

1A
1B

1DE
2DE

S0

S1

splitter or signal routing functions with a single
device.

The TIA/EIA-644 standard compliant electrical
interface provides a minimum differential output

2A
2B

6

+

7

_

0

1

voltage magnitude of 247 mV into a 100-Ω load
and receipt of 100 mV signals with up to 1 V of

MUX Truth Table

ground potential difference between a transmitter
and receiver. The SN65LVDM22 doubles the
output drive current to achieve L VDS levels with a
50 Ω load.

The intended application of these devices and
signaling technique is for both point–to–point
baseband (single termination) and multipoint

INPUT OUTPUT

S1

S0

1Y/1Z

0

0

1A/1B

0

1

2A/2B

1

0

1A/1B

1

1

2A/2B

2Y/2Z

1A/1B
2A/2B
2A/2B
1A/1B

FUNCTION

Splitter
Splitter
Router
Router

(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).

14
13

10

1Y
1Z

2Y

11

2Z

The SN65LVDS22 and SN65LVDM22 are characterized for operation from –40 C to 85 C.

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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Copyright  1998, Texas Instruments Incorporated

1

SN65LVDS22, SN65LVDM22
DUAL MULTIPLEXED LVDS REPEATERS

SLLS315– DECEMBER 1998

equivalent input and output schematic diagrams

V

CC

V

CC

S0, S1

Input

A Input B Input

50 Ω

7 V

300 kΩ

V

CC

300 kΩ 300 kΩ

1DE, 2DE

Input

10 kΩ

50 Ω

7 V

300 kΩ

V

CC

5 Ω

Y or Z
Output

7 V7 V

7 V

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN65LVDS22, SN65LVDM22

DUAL MULTIPLEXED LVDS REPEATERS

SLLS315– DECEMBER 1998

absolute maximum ratings over operating free-air temperature (unless otherwise noted)

Supply voltage range, V

(see Note 1) –0.5 V to 4 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CC

†

Voltage range (DE, S0, S1) –0.5 V to 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage range, V

(A or B) –0.5 V to Vcc+0.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I

Electrostatic discharge: A, B, Y, Z and GND (see Note 2) Class 3, A:12 kV, B:600 V. . . . . . . . . . . . . . . . . . . .

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 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.

NOTES: 1. All voltage values, except differential I/O bus voltages, are with respect to network ground terminal.

2. Tested in accordance with MIL-STD-883C Method 3015.7.

DISSIPATION RATING T ABLE

PACKAGE

D16 950 mW 7.6 mW/°C 494 mW

‡

This is the inverse of the junction-to-ambient thermal resistance when board-mounted and with
no air flow.

TA ≤ 25°C

POWER RATING

DERATING FACTOR

ABOVE TA = 25°C

‡

POWER RATING

TA = 85°C

recommended operating conditions

MIN NOM MAX UNIT

Supply voltage, V
High-level input voltage, V
Low-level input voltage, V
Magnitude of differential input voltage, VID 0.1 0.6 V

Common-mode input voltage, VIC (see Figure 1)

Operating free-air temperature, T

CC

IH

IL

A

S0, S1, 1DE, 2DE 2 V
S0, S1, 1DE, 2DE 0.8 V

3 3.3 3.6 V

Ť

Ť

Ť

Ť

V

ID

2

–40 85 °C

V

ID

2.4–
2

VCC–0.8 V

V

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3

SN65LVDS22, SN65LVDM22

IIInput current (A or B inputs)

A

DUAL MULTIPLEXED LVDS REPEATERS

SLLS315– DECEMBER 1998

COMMON-MODE INPUT VOLTAGE

DIFFERENTIAL INPUT VOLTAGE

2.5

vs

MAX at VCC > 3.15 V

2

1.5

1

– Common-Mode Input Voltage – VV

0.5

IC

0

0 0.1 0.2 0.3

MAX at VCC = 3 V

Min

0.4 0.5 0.6

VID – Differential Input Voltage – V

Figure 1. Common-Mode Input Voltage vs Differential Input Voltage

receiver electrical characteristics over recommended operating conditions (unless otherwise
noted)

PARAMETER TEST CONDITIONS MIN TYP†MAX UNIT

V

ITH+

V

ITH–

I

I(OFF)

Positive-going differential input voltage threshold 100 mV
Negative-going differential input voltage threshold –100 mV

p

Power-off input current (A or B inputs) VCC = 0 V 20 µA

p

VI = 0 V –2 –20
VI = 2.4 V –1.2

µ

4

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