SN65LVDS250_07 Datasheet, PDF (1/18 Pages) Texas Instruments – LVDS 4x4 CROSSPOINT SWITCH

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SN65LVDS250
SN65LVDT250
SLLS594B – MARCH 2004 – REVISED OCTOBER 2004
LVDS 4x4 CROSSPOINT SWITCH
FEATURES
• Greater Than 2.0 Gbps Operation
• Nonblocking Architecture Allows Each
Output to be Connected to Any Input
• Pk-Pk Jitter:
– 60 ps Typical at 2.0 Gbps
– 110 ps Typical at 2.5 Gbps
• Compatible With ANSI TIA/EIA-644-A LVDS
Standard
• Available Packaging 38-Pin TSSOP
• 25 mV of Input Voltage Threshold Hysteresis
• Propagation Delay Times: 800 ps Typical
• Inputs Electrically Compatible With LVPECL,
CML and LVDS Signal Levels
• Operates From a Single 3.3-V Supply
• Low Power: 110 mA Typical
• Integrated 110-Ω Line Termination Resistors
Available With SN65LVDT250
APPLICATIONS
• Clock Buffering/Clock Muxing
• Wireless Base Stations
• High-Speed Network Routing
• Telecom/Datacom
DESCRIPTION
The SN65LVDS250 and SN65LVDT250 are 4x4
nonblocking crosspoint switches in a flow-through
pin-out allowing for ease in PCB layout. Low-voltage
differential signaling (LVDS) is used to achieve a
high-speed data throughput while using low power.
Each of the output drivers includes a 4:1 multiplexer
to allow any input to be routed to any output. Internal
signal paths are fully differential to achieve the high
signaling speeds while maintaining low signal skews.
The SN65LVDT250 incorporates 110-Ω termination
resistors for those applications where board space is
a premium.
The SN65LVDS250 and SN65LVDT250 are
characterized for operation from -40°C to 85°C.
SN65LVDS250DBT ( Marked as LVDS250)
SN65LVDT250DBT ( Marked as LVDT250)
(TOP VIEW)
S10
1
S11
2
1A
3
1B
4
S20
5
S21
6
2A
7
2B
8
GND
9
VCC
10
GND
11
3A
12
3B
13
S30
14
S31
15
4A
16
4B
17
S40
18
S41
19
38
VCC
37
GND
36
1Y
35
1Z
34
1DE
33
2Y
32
2Z
31
2DE
30
GND
29
VCC
28
GND
27
3Y
26
3Z
25
3DE
24
4Y
23
4Z
22
4DE
21
GND
20
VCC
EYE PATTERN
76 − ps/div
V_IC= 1.2 V
|V_ID| = 200 mV
2 Gbps
Input = PRBS 2²³ −1
V_CC = 3.3 V
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 © 2004, Texas Instruments Incorporated