SN65LVDS22 Datasheet, PDF (1/13 Pages) Texas Instruments – DUAL MULTIPLEXED LVDS REPEATERS

SN65LVDS22, SN65LVDM22
DUAL MULTIPLEXED LVDS REPEATERS
SLLS315– DECEMBER 1998
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_CC Less Than 1.5 V
D LVTTL Levels are 5 V Tolerant
D Open-Circuit Fail Safe Receiver
description
D PACKAGE
(TOP VIEW)
1B 1
1A 2
S0 3
1DE 4
S1 5
2A 6
2B 7
GND 8
16 V_CC
15 V_CC
14 1Y
13 1Z
12 2DE
11 2Z
10 2Y
9 GND
logic diagram (positive logic)
2
1A
+
1B ¹
_
0
1
14
1Y
13
1Z
The SN65LVDS22 and SN65LVDM22 are differ-
ential 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
4
1DE
12
2DE
3
S0
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.
5
S1
0
6
2A
+
7
2B
_
1
10 _2Y
11
2Z
INPUT
S1 S0
0
0
MUX Truth Table
OUTPUT
1Y/1Z
1A/1B
2Y/2Z
1A/1B
FUNCTION
Splitter
The intended application of these devices and
0
1
2A/2B 2A/2B
Splitter
signaling technique is for both point–to–point
baseband (single termination) and multipoint
(double termination) data transmissions over
1
0
1A/1B 2A/2B
Router
1
1
2A/2B 1A/1B
Router
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1998, Texas Instruments Incorporated
1