Texas Instruments SN65LVDS22D, SN65LVDS22DR, SN65LVDM22D, SN65LVDM22DR Datasheet

SN65LVDS22, SN65LVDM22 DUAL MULTIPLEXED LVDS REPEATERS

SLLS315± DECEMBER 1998

DMeets or Exceeds the Requirements of ANSI TIA/EIA±644±1995 Standard

DDesigned for Signaling Rates Up to 400 Mbit/s

DESD Protection Exceeds 12 kV on Bus Pins

DOperates from a Single 3.3-V Supply

DLow-Voltage Differential Signaling with Output Voltages of 350 mVinto:

±100-Ω Load (SN65LVDS22)

±50-Ω Load (SN65LVDM22)

DPropagation Delay Time; 4 ns Typ

DPower Dissipation at 400 Mbit/s of 150 mW

DBus Pins are High Impedance When Disabled or With VCC Less Than 1.5 V

D PACKAGE (TOP VIEW)

1B		1	16		VCC
1A		2	15		VCC
S0		3	14		1Y
1DE		4	13		1Z
S1		5	12		2DE
2A		6	11		2Z
2B		7	10		2Y
GND		8	9		GND

logic diagram (positive logic)

D LVTTL Levels are 5 V Tolerant

1A

2

+

D Open-Circuit Fail Safe Receiver

14

1B

1

_

0

1Y

description

1

13

1Z

The SN65LVDS22 and SN65LVDM22 are differ-

1DE

4

ential line

drivers

and

receivers

that

use

12

low-voltage differential signaling (LVDS) to

2DE

3

achieve signaling rates as high as 400 Mbps. The

S0

receiver outputs can be switched to either or both

drivers through the multiplexer control signals S0

5

and S1. This allows the flexibility to perform

S1

splitter or signal routing functions with a single

0

10

device.

6

2Y

2A

+

11

The TIA/EIA-644 standard

compliant

electrical

2Z

7

_

1

interface provides a minimum differential output

2B

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

INPUT

OUTPUT

and receiver. The

SN65LVDM22 doubles

the

FUNCTION

output drive current to achieve LVDS levels with a

S1

S0

1Y/1Z

2Y/2Z

50 Ω load.

0

0

1A/1B

1A/1B

Splitter

The intended application of these devices and

0

1

2A/2B

2A/2B

Splitter

signaling technique is for both point±to±point

1

0

1A/1B

2A/2B

Router

baseband

(single

termination) and

multipoint

1

1

2A/2B

1A/1B

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).

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.

Copyright 1998, Texas Instruments Incorporated

POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

1

SN65LVDS22, SN65LVDM22

DUAL MULTIPLEXED LVDS REPEATERS

SLLS315± DECEMBER 1998

equivalent input and output schematic diagrams

VCC

VCC

300 kΩ

50 Ω
S0, S1
Input	50 Ω
	1DE, 2DE
7 V	Input
300 kΩ	7 V

VCC

VCC

300 kΩ

300 kΩ

A Input	B Input
7 V	7 V

	5 Ω	Y or Z
10 kΩ
		Output
		7 V

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SN65LVDS22, SN65LVDM22

DUAL MULTIPLEXED LVDS REPEATERS

SLLS315± DECEMBER 1998

absolute maximum ratings over operating free-air temperature (unless otherwise noted)²

Supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . . ±0.5 V to 4 V
Voltage range (DE, S0, S1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . . ±0.5 V to 6 V
Input voltage range, VI (A or B) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . ±0.5 V to Vcc+0.5 V
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

²Stresses beyond those listed under ªabsolute maximum ratingsº 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 ªrecommended operating conditionsº 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 TABLE

		T		≤ 25°C	DERATING FACTOR³	T = 85°C
	PACKAGE	A			ABOVE TA = 25°C	A
		POWER RATING				POWER RATING
	D16		950 mW		7.6 mW/°C	494 mW

³This is the inverse of the junction-to-ambient thermal resistance when board-mounted and with no air flow.

recommended operating conditions

			MIN		NOM	MAX			UNIT
Supply voltage, VCC		3			3.3	3.6			V
High-level input voltage, VIH	S0, S1, 1DE, 2DE	2							V
Low-level input voltage, VIL	S0, S1, 1DE, 2DE					0.8			V
Magnitude of differential input voltage, VID		0.1				0.6			V
			VID				VID		V
Common-mode input voltage, VIC (see Figure 1)						2.4 ± 2
			2
						VCC±0.8			V
Operating free-air temperature, TA		±40				85			°C

POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

3

SN65LVDS22, SN65LVDM22

DUAL MULTIPLEXED LVDS REPEATERS

SLLS315± DECEMBER 1998

COMMON-MODE INPUT VOLTAGE vs

DIFFERENTIAL INPUT VOLTAGE

	2.5			MAX at VCC > 3.15 V
± V			MAX at VCC = 3 V
Voltage	2
-Mode Input	1.5
± Common	1
	0.5
IC				Min
V
	0				0.4	0.5	0.6
	0	0.1	0.2	0.3
		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 TYP²	MAX	UNIT
VITH+	Positive-going differential input voltage threshold			100	mV
VITH±	Negative-going differential input voltage threshold		±100		mV
II	Input current (A or B inputs)	VI = 0 V	±2	±20	μA
		VI = 2.4 V	±1.2
II(OFF)	Power-off input current (A or B inputs)	VCC = 0 V		20	μA

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