Low -voltage differential signaling with output voltages
of
±
350 mV into 50-ohm load version (Bus LVDS)
Single 3.3V supply
Accepts
±
350-mV differential inputs
Output Drivers are high-impedance when disabled or
when V
DD
≤1.5V
16-pin SOIC/TSSOP packages
Industrial version available
achieve signaling rates of 700Mbs. The receiver outputs can
be switched to either or both drivers through the multiplexer
control signals S0/S1. This provides flexibility in application for
either a splitter or router configuration with a single device.
The Cypress CY2LL843 are configured as a single
two-channel repeater/Mux.
The LVDS standard provides a minimum differential output
voltage of 247 mV into a 50-ohm load and receipt of as little as
100 mV signals with up to 1V of DC offset between transmitter
and receiver. The Cypress CY2LL843 doubles the output drive
current to achieve BusLVDS signaling levels with a faster
rise/fall times into 50-ohm load.
A doubly terminated BusLVDS line enables multipoint config-
urations.
Designed for both point to point based-band multi-point data
transmission over controlled impedance lines.
Description
The Cypress CY2LL843 are differential line drivers and
receivers that utilize Low Voltage Signaling or LVDS, to
Block Diagram
Pin Configuration
VDD
1DE
1A
1B
2A
2B
1Y
1Z
2Y
2Z
1B
1A
GND
S0
S1
CY2LL843
2DE
S0
1DE
S1
2A
2B
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VDD
VDD
1Y
1Z
2DE
2Z
2Y
GND
16 pin SOIC/TSSOP
Cypress Semiconductor Corporation
Document #: 38-07066 Rev. OBS
•
3901 North First Street
•
San Jose
•
CA 95134 • 408-943-2600
Revised December 02, 2004
ComLink™ Series
CY2LL843
Pin Description
Pin Number
1,2
3
4
5
6,7
8,9
10,11
12
14,13
15,16
Pin Name
1B, 1A
S0
1DE
S1
2A, 2B
Differential Input Channel 1
Function Select 0
Data Enable Channel 1
Function Select 1
Differential Input Channel 2
Ground
Differential Output Channel 2
Data Enable Channel 2
Differential Output Channel 1
Supply Voltage
Pin Description
G
ND
2Y, 2Z
2DE
IY, 1Z
V
DD
Input
Table 1. Mux Function Table
Output
[[1]]
S1
0
0
1
1
1Y/1Z
1A/1B
2A/2B
1A/1B
2A/2B
2Y/2Z
1A/1B
2A/2B
2A/2B
1A/1B
Splitter A
Splitter B
Pass-thru Router
Cross Point Router
Function
S0
0
1
0
1
Table 2. Absolute Maximum Rating Over Operating Free-Air Temperature
[[2]]
Supply Voltage Range, V
DD
(1)
Voltage Range (DE,S0,S1)
Input Voltage Range, V
IN
(A or B)
ESD (All pins)
Storage Temperature Range
Table 3. Recommended Operating Conditions
[3]
Parameter
V
DD
V
IH
V
IL
V
ID
V
IC
T
A
Supply Voltage
High Level Input Voltage
Low Level Input Voltage
Magnitude of Differential Input Voltage
Common Mode Input Voltage
Operating Free Air Temperature
( see
Figure 11,Figure 12,
Figure 13)
(S0,S1,1DE,2DE)
(S0,S1,1DE,2DE)
0.1
V
ID
/2
–40
Description
Min.
3
2
0.8
0.6
2.4 – (V
ID
/2)
VDD – 0.8
85
°C
Typ.
3.3
Max.
3.6
Unit
V
–0.5V to 4V
–0.5V to 6.0V
–0.5V to V
DD
+ 0.5V
Class 3, A: 2KV, B: 500V
–65°C to 150°C
Notes:
1. See
Figure 1.
2. Stresses greater than those listed under absolute maximum ratings may cause permanent damage to the device. This is intended to be a stress rating only and
functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure
to absolute maximum rating conditions for extended periods may affect reliability.
3.
Multiple Supplies:
The voltage on any input or I/O pin cannot exceed the power pin during power-up. Power supply sequencing is NOT required
Document #: 38-07066 Rev. OBS
Page 2 of 13
ComLink™ Series
CY2LL843
Table 4. Receiver Electrical Characteristics Over Recommended Operating Conditions
Parameter
VITH+
VITH-
II
II
II (Off)
Description
Positive-going Differential Input Voltage Threshold
Negative-going Differential Input Voltage Threshold
Input Current ( A Inputs)
Input Current (B Inputs)
Power Off Current (A or B Inputs)
Test Conditions
V
CM
= 1.2V
V
CM
= 1.2V
VI = 0V
VI = 2.4V
VI = 0.8V
VI = 2.4V
V
DD
= 0V
0.1
0.5
–100
–0.5
–10
–10
10
10
10
Min.
Typ.
Max.
100
Unit
mV
mV
uA
uA
uA
uA
uA
Table 5. Receiver Electrical Characteristics Over Recommended Operating Conditions
Parameter
V
OD
~V
OD
V
OC
(SS)
~V
OC
(SS)
V
OC
(PP)
I
CC
Description
Differential Output Voltage Swing
Change in differential Output Voltage
Swing between logic states
Steady State Common-mode output
voltage
Change in Steady State
Common-mode output between logic
states
Peak to Peak Common-mode output
voltage
Supply Current
No load f = 100 MHz
RL = 50 ohm, F = 100 MHz
Both Channels Disabled
I
H
I
IL
I
OS
I
OZ
C
in
High Level Input Current
Low Level Input Current
Short Circuit Current
High Impedance Output Current
Input Capacitance
Control Input Capacitance
S0,S1,DE
S0,S1,DE
V
IH
= 5V
V
IL
= 0.8V
V
OY
or V
0Z
= 0V
V
OD
= 0V
V
OD
= 60mV
V
O
= 0V or V
DD
1A, 1B, 2A, 2B
S0, S1, 1DE, 2DE
0.1
0.1
3
8
20
5
20
20
1
1
pF
pF
uA
Test Conditions
RL = 50 Ohm
See
Figure 11,
Figures [15]–[19]
See
Figure 12
Min.
247
-50
1.125
-50
3
Typ.
340
Max.
454
50
1.375
50
Unit
mV
mV
V
mV
150
30
35
25
mV
mA
mA
mA
uA
uA
mA
Table 6. Differential Receiver to Driver Switching Characteristics
Over Recommended Operating Conditions
[[5]]
Parameter
T
PLH
T
PHL
T
sk(p)
T
r
T
f
Description
Differential Propagation delay, High to Low
Pulse Skew ( T
PHL
–T
PLH
)
Transition Low to High
Transition High to Low
Test Conditions
Min.
Typ.
[[4]]
4
4
0.2
800
800
1500
1500
Max.
6
6
Unit
nS
nS
nS
pS
pS
Differential Propagation delay, Low to High CL = 10 pF (see
Figure 14)
Notes:
4. All typical values are measured at 25°C with a 3.3V supply.
5. These parameters are measured over supply voltage and temperature ranges recommended for the device.
Document #: 38-07066 Rev. OBS
Page 3 of 13
ComLink™ Series
CY2LL843
Table 6. Differential Receiver to Driver Switching Characteristics
[color=black][font=宋体][size=10.5pt]There are so many development boards on the market that you will be dazzled. So whether you are a novice or an expert, you should be careful when choosing a developm...
After modifying the driver of the touch screen controlled by at91sam9261+ADS7843e under Linux, I use a small test program to read the coordinates of the touch screen, but the coordinate values read ou...
I use C51 to read the time in DS1687 (clock chip), and then send it to the 16*48 dot matrix LED for display; but every time I power on, it can only display the current read time, and the time is not a...
Abstract: In order to generate a stable excitation signal, the design of a digital frequency synthesizer is implemented on FPGA using Verilog hardware language. The design includes accumulator, wav...[Details]
As cellular phones become more advanced, the power consumption of the system during operation and the power consumption during standby are also increasing. Therefore, the power management design of...[Details]
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
This paper establishes a fuel cell engine test platform based on the NI integrated hardware and software environment. This platform can realize the test and control of fuel cell engines and their a...[Details]
With the advocacy and implementation of the government's Safe City Plan, the security market has increasingly higher requirements for the clarity of surveillance images. Imagine that after a case o...[Details]
VP2188 is a color STN LCD module produced by Jingdian Pengyuan. This module is a dot matrix transmissive color STN display screen with a color scale of 65 k colors and white LED backlight. Its core...[Details]
Experimental tasks
A DS18B20 is used to form a temperature measurement system. The temperature measurement accuracy reaches 0.1 degrees. The temperature range is between -20 degrees and +50 de...[Details]
This controller uses PIC16C54 single-chip microcomputer as the controller, and it is very easy to use: just connect a telephone line to the loudspeaker through the controller, and you can rem...[Details]
OC faults may be the most frequent and the most frequent of all faults in the inverter. They alarm during the startup process, during the shutdown process, during operation, and even when powered o...[Details]
In 2012, more than half of the cars in the European, Japanese and American car markets will be equipped with color displays, navigation systems, satellite communications and other in-vehicle infota...[Details]
At present, the traffic congestion in cities is quite serious. According to relevant news reports: In China, the traffic congestion has expanded from megacities such as Beijing, Shanghai, and Guangzho...[Details]
Preface
In recent years, white light LEDs have gradually replaced incandescent bulbs and fluorescent lamps because they have unparalleled advantages over traditional light sources in terms...[Details]
Only a small number of LED manufacturers can produce high-quality LEDs. For applications that are only used for simple indication, low-quality LEDs are sufficient. However, high-quality LEDs must...[Details]
Introduction
Nowadays, people pay more and more attention to the security alarm system, and people have higher and higher requirements for the functions and performance of the alarm. This paper prop...[Details]
1. Introduction
With the increasing popularity of fully automatic washing machines, consumers have higher and higher requirements for their environmenta...[Details]
Embedded System
京公网安备 11010802033920号
EEWORLD
