ETC CY2LL843

ComLink™ Series
CY2LL843
High-drive Two-Channel LVDS Repeater/Mux
Features
•
•
•
•
•
ANSI TIA/EIA-644-1995-compliant
Designed for data rates to > 700 Mbs = (350 MHz)
Single 2 × 2 with high-drive output drivers
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 VDD ≤1.5V
16-pin SOIC/TSSOP packages
Industrial version available
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 configurations.
Description
Designed for both point to point based-band multi-point data
transmission over controlled impedance lines.
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
1Y
1Z
2A
2Y
2Z
2B
1B
1A
GND
2DE
S0
S0
S1
1DE
S1
2A
2B
GND
1
2
3
4
5
6
7
8
CY2LL843
•
•
•
•
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.
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. *A
•
3901 North First Street
•
San Jose
•
CA 95134 • 408-943-2600
Revised December 14, 2002
ComLink™ Series
CY2LL843
Pin Description
Pin Number
Pin Name
Pin Description
1,2
1B, 1A
3
S0
4
1DE
5
S1
6,7
2A, 2B
8,9
GND
10,11
2Y, 2Z
12
2DE
Data Enable Channel 2
14,13
IY, 1Z
Differential Output Channel 1
15,16
VDD
Differential Input Channel 1
Function Select 0
Data Enable Channel 1
Function Select 1
Differential Input Channel 2
Ground
Differential Output Channel 2
Supply Voltage
Table 1. Mux Function Table
Output[[1]]
Input
Function
S0
S1
1Y/1Z
2Y/2Z
0
0
1A/1B
1A/1B
Splitter A
1
0
2A/2B
2A/2B
Splitter B
0
1
1A/1B
2A/2B
Pass-thru Router
1
1
2A/2B
1A/1B
Cross Point Router
Table 2. Absolute Maximum Rating Over Operating Free-Air Temperature[[2]]
Supply Voltage Range, VDD(1)
–0.5V to 4V
Voltage Range (DE,S0,S1)
–0.5V to 6.0V
Input Voltage Range, VIN (A or B)
–0.5V to VDD + 0.5V
ESD (All pins)
Class 3, A: 2KV, B: 500V
Storage Temperature Range
–65°C to 150°C
Table 3. Recommended Operating Conditions[3]
Parameter
Description
VDD
Supply Voltage
VIH
High Level Input Voltage
(S0,S1,1DE,2DE)
(S0,S1,1DE,2DE)
VIL
Low Level Input Voltage
VID
Magnitude of Differential Input Voltage
VIC
Common Mode Input Voltage
TA
Operating Free Air Temperature
( see Figure 11,Figure 12,
Figure 13)
Min.
Typ.
Max.
Unit
3
3.3
3.6
V
2
0.8
0.1
0.6
VID/2
2.4 – (VID/2)
VDD – 0.8
–40
85
°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. *A
Page 2 of 13
ComLink™ Series
CY2LL843
Table 4. Receiver Electrical Characteristics Over Recommended Operating Conditions
Parameter
VITH+
Description
Test Conditions
Positive-going Differential Input Voltage Threshold
Min.
Typ.
VCM = 1.2V
VITH-
Negative-going Differential Input Voltage Threshold
VCM = 1.2V
–100
II
Input Current ( A Inputs)
VI = 0V
–0.5
II
Input Current (B Inputs)
II (Off)
Power Off Current (A or B Inputs)
Unit
100
mV
mV
VI = 2.4V
VI = 0.8V
Max.
0.5
VI = 2.4V
–10
uA
–10
uA
10
uA
10
uA
0.1
10
uA
Min.
Typ.
Max.
Unit
247
340
VDD = 0V
Table 5. Receiver Electrical Characteristics Over Recommended Operating Conditions
Parameter
Description
VOD
Differential Output Voltage Swing
~VOD
Change in differential Output Voltage
Swing between logic states
VOC(SS)
Steady State Common-mode output
voltage
~VOC(SS)
Change in Steady State
Common-mode output between logic
states
VOC(PP)
Peak to Peak Common-mode output
voltage
ICC
Supply Current
Test Conditions
RL = 50 Ohm
See Figure 11,
Figures [15]–[19]
See Figure 12
454
mV
-50
50
mV
1.125
1.375
V
50
mV
150
mV
-50
3
No load f = 100 MHz
30
mA
RL = 50 ohm, F = 100 MHz
35
mA
25
mA
Both Channels Disabled
IH
High Level Input Current
S0,S1,DE
S0,S1,DE
VIH = 5V
20
VIL = 0.8V
5
uA
IIL
Low Level Input Current
IOS
Short Circuit Current
VOY or V0Z = 0V
uA
IOZ
High Impedance Output Current
VOD = 60mV
0.1
1
VO= 0V or VDD
0.1
1
Cin
Input Capacitance
1A, 1B, 2A, 2B
3
pF
Control Input Capacitance
S0, S1, 1DE, 2DE
8
pF
20
VOD = 0V
mA
20
uA
Table 6. Differential Receiver to Driver Switching Characteristics Over Recommended Operating Conditions [[5]]
Parameter
Description
Test Conditions
Min.
Typ.[[4]]
Max.
Unit
TPLH
Differential Propagation delay, Low to High CL = 10 pF (see Figure 14)
4
6
nS
TPHL
Differential Propagation delay, High to Low
4
6
nS
Tsk(p)
Pulse Skew ( TPHL–TPLH)
0.2
Tr
Transition Low to High
800
1500
pS
800
1500
pS
Transition High to Low
Tf
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. *A
nS
Page 3 of 13
ComLink™ Series
CY2LL843
Table 6. Differential Receiver to Driver Switching Characteristics Over Recommended Operating Conditions (continued)[[5]]
TPHZ
Propagation delay, High level to High
impedance output
TPLZ
Propagation delay, Low level to High
impedance output
TPZH
(see Figure 14)
4
10
nS
4.3
10
nS
Propagation delay, high impedance to High
level output
3
10
nS
TPZL
Propagation delay, high impedance to Low
level output
2
10
nS
TPHL_skR1_Dx
Channel to Channel skew-receiver 1 to Any
mux related drivers
95
pS
TPLH_skR1_Dx
Channel to Channel skew-receiver 1 to Any
mux related drivers
95
pS
TPPHL_skR2_Dx
Channel to Channel skew-receiver 2 to Any
mux related drivers
95
pS
TPLH_skR2_Dx
Channel to Channel skew-receiver 2 to Any
mux related drivers
95
pS
DJ
Deterministic Jitter (100MHz, 25°C,
VID =0.4V, S0, S1 = 0)
95
pS
(see Figure 7)
PRBS-Differential
Table 7. High Frequency Parametrics
Parameter
Fmax
Description
Test Conditions
Maximum frequency
VDD = 3.3V
Min.
50% duty cycle tW(50–50)
Standard Load Circuit.
S 0/S 1
1Y/1Z
Cross
Point
Router
2Y/2Z
1A /1B
1Y/1Z
S 0/S 1
Unit
400
MHz
S 0/S1
2A/2B
2A/2B
Max.
Splitter O ptions
Router Options
1A /1B
Typ.
Pass
Thru
Router
2Y/2Z
1A/1B
1Y/1Z
Splitter A
2A/2B
2Y /2Z
1A/1B
1Y/1Z
Splitter B
2A /2B
2Y /2Z
S 0/S1
Figure 1. Two-channel Cross Point Switch/Mux
Document #: 38-07066 Rev. *A
Page 4 of 13
ComLink™ Series
CY2LL843
Dynamic IDD CY2LL843C
VID=0.4, VIC=1.2V S0, S1=01
Temp = 25°C
45.00
45.00
43.00
43.00
41.00
41.00
39.00
39.00
37.00
37.00
Idd (mA)
Idd (mA)
Dynamic IDD CY2LL843C
VID=0.4, VIC=1.2V S0, S1=00
Temp = 25°C
35.00
33.00
31.00
Vdd=3.60V
29.00
Vdd=3.30V
27.00
Vdd=3.00V
35.00
33.00
31.00
Vdd=3.60V
29.00
Vdd=3.30V
27.00
Vdd=3.00V
25.00
25.00
50
100
150
200
250
300
350
50
400
100
150
200
250
300
350
400
Fin (MHz)
Fin (MHz)
Figure 2. Dynamic IDD vs. Frequency 25 C
Dynamic IDD CY2LL843C
VID=0.4, VIC=1.2V S0, S1=00
Temp=85°C
Dynamic IDD CY2LL843C
VID=0.4, VIC=1.2V S0, S1=01
Temp=85°C
50.00
45.00
43.00
41.00
45.00
37.00
Idd (mA)
Idd (mA)
39.00
35.00
33.00
31.00
35.00
Vdd=3.60V
29.00
Vdd=3.30V
27.00
Vdd=3.00V
25.00
50
40.00
Vdd=3.60V
30.00
Vdd=3.30V
Vdd=3.00V
100
150
200
250
300
350
400
25.00
50
100
150
Fin (MHz)
200
250
300
350
400
Fin (MHz)
Figure 3. Dynamic IDD vs. Frequency 85 C
Document #: 38-07066 Rev. *A
Page 5 of 13
ComLink™ Series
CY2LL843
V DD=3.30V , Te m p = 25 C
VDD=3.30V, Temp = 85 C
0.400
Vod (V)
Vod (V)
0.500
0.300
0.200
0.500
0.300
0.100
0.100
20
120
220
20
320
120
Fre q (M Hz)
1Y
1Z
220
320
Fre q (MHz)
2Y
1Y
2Z
1Z
2Y
2Z
1.280
1.270
1.260
1.250
20
120
220
320
VOC(ss)
[VOC(pp) <0.50V]
VOC(ss)
[ VOC(pp) <0.050V ]
Figure 4. VOD vs. Frequency
1.280
1.270
1.260
1.250
20
120
Freq (MHz)
1Y/1Z
220
320
Freq (MHz)
1Y/1Z
2Y/2Z
2Y/2Z
Figure 5. VOC(ss) vs. Frequency
VDD =3.30V, Temp = 25 C
VDD-3.30V, Temp = 25 C
60.0
PW (ns)
PW (ns)
60.0
40.0
20.0
0.0
40.0
20.0
0.0
0
100
200
300
400
20
120
Freq (MHz)
1Y
1Z
2Y
220
320
Freq (MHz)
2Z
1Y
1Z
2Y
2Z
Figure 6. Pulse width vs. Frequency
Document #: 38-07066 Rev. *A
Page 6 of 13
ComLink™ Series
CY2LL843
Dj Deterministic
Jitter (P-P)
VDD= 3.30V, Temp = 25 C
200
150
100
50
0
20
120
220
320
Freq (MHz)
1Y/1Z
2Y/2Z
Figure 7. Deterministic Jitter (p-p) vs. Frequency
V DD=3.30V , Te m p = 25 C
VDD=3.30V, Temp = 85 C
0.400
Vod (V)
Vod (V)
0.500
0.300
0.200
0.500
0.300
0.100
0.100
20
120
220
320
20
120
Fre q (M Hz)
1Y
1Z
220
320
Fre q (MHz)
2Y
2Z
1Y
1Z
2Y
2Z
Figure 8. TPLH vs. VIC 3.3V, 50 MHz
Document #: 38-07066 Rev. *A
Page 7 of 13
ComLink™ Series
CY2LL843
Temp = 25°C
6.000
TPHL
5.500
5.000
VID
0.400
4.500
4.000
3.500
0
0.5
1
1.5
2
2.5
VIC
Figure 9. TPHL vs. VIC 3.3V, 50 MHz
Temp=85°C
100.00
80.00
TPLH-TPHL (ps)
60.00
40.00
20.00
0.00
-20.00 50
100
150
200
250
300
350
400
-40.00
-60.00
-80.00
-100.00
Freq. (MHz)
Figure 10. TPLH-TPHL vs. VIC 3.3V
Document #: 38-07066 Rev. *A
Page 8 of 13
ComLink™ Series
CY2LL843
A
A
Pulse
B
Generator
Pulse
G enerator
Y
R
D
R
B
D
Y
Z
RL & RC
RL
Z
DE
10 p F
DE
10 pF
CL = 10pF
10 pF
V IA
1
VI(A)
1.4V
VI(B)
1.0V
0.0V
1.4 V
0 V D iff e r e n ti a l
1 .2 V C M
1.0 V
VIB
1.4 V
V 0Y
0 V D if fe r e n t ia l
1 .2 V C M
V 0Z
1.0 V
TPHL
T PLH
tF
tR
80%
Figure 11. Test Circuit and Voltage Definitions
for the Differential Output Signal[[6],[7],[8]]
A
Y
Pulse
Generator
B
R
D
RL
Z
0 V D iff e r e n ti a l
20%
V 0Y - V 0Z
CL = 10pF
10 pF
V I(A)
1.4V
V I(B)
1.0V
tF
Figure 13. Differential Receiver to Driver Propagation
Delay and Driver Transition Time[[6],[10],[11]]
1.0 V or
1.2V
DE
tR
A
B
Y
R
D
1.2V
1.2V
Z
DE
CL =10 pF
2.0V
1.4V
Voc (pp)
V DD
DE
Voc (ss)
V0Y or V0Z
V0Y or V0Z
Figure 12. Test Circuit and Voltage Definitions for the
Driver Common-Mode Output Voltage[[6],[7],[8],[9]]
0.8V
1.4V
T PZH
T PZH
1.25V
1.2V
1.2V
T PLZ
1.15V
1.0V
Figure 14. Test Circuit & Voltage Definitions for the Driver
Common-Mode Output Voltage[[6],[10]]
Notes:
6. All input pulses are supplied by a frequency generator with the following characteristics: tR and tF £ 1 nS; pulse rep. rate = 50 MppS; pulse width = 10 ± 0.2 nS.
7. RL = 50 Ohm.
8. CL includes instrumentation and fixture capacitance within 6 mm of the DUT.
9. VOC measurement requires equipment with a 3 dB bandwidth of at least 300 MHz.
10. RL = 50 Ohm ±1%.
11. Point to Point: RL = 50 Ohm ±1% CL 3 pF.
Document #: 38-07066 Rev. *A
Page 9 of 13
ComLink™ Series
CY2LL843
Application Engineering
Table 8. Technical Notes on STD Drive (LL842, A and D)
vs. High Drive (LL843, B and C)[[12]]
Z O =50
A
RL=100 ohm
Pulse
Generator
Z O =50
CL = 10pF
2 locations
Figure 15. Termination Scheme for 100-Ohm External
Termination
ZO=50
100
ohm
CL
Figure 16. Termination Scheme for 100-Ohm
Self-termination Interface Chip
Typical Characteristics (@VDD = 3.3V/TA = 25°C)
D
Unit
1.2
1.2
1.2
1.2
V
DC Offset
1.0
1.0
1.0
1.0
V
VOD Min.
0.25
0.5
0.25
0.125
V
VOD Max
0.45
0.9
0.45
0.225
V
T/Rise
1.4
1.4
0.6
0.6
ns
T/Fall
1.4
1.4
0.6
0.6
ns
Standard Drive
Current drive of 1i
+/i
CL
C
VOX
R e c e iv e r c h ip
w ith
1 0 0 O h m o n c h ip
te rm in a tio n
ZO=50
B
+/i
A
D
100
ohm
50
ohm
Hi Drive
Current drive of 2i
+/2i
B
25 ohm
+/2i
C
100
ohm
50
ohm
25 ohm
Figure 19. Comparison Standard Drive ‘842
vs. High Drive ‘843
Note:
12. See Figure 19.
CY2LL843
Current (ma)
5
0
-5
Voh - Ioh
-10
-15
-20
0
1
2
3
4
Voltage
Figure 17. VOH vs. IOH
CY2LL843
Current (ma)
8
6
4
Vol - Iol
2
0
-2
0
1
2
3
4
V oltage
Figure 18. Low-level Output vs. Current
Document #: 38-07066 Rev. *A
Page 10 of 13
ComLink™ Series
CY2LL843
Ordering Information
Part Number
Package Type
Product Flow
CY2LL843SI
16-pin SOIC
Industrial, –40°C to 85°C
CY2LL843SIT
16-pin SOIC–Tape and Reel
Industrial, –40° to 85°C
CY2LL843ZI
16-Pin TSSOP
Industrial, –40° to 85°C
CY2LL843ZIT
16-pin TSSOP–Tape and Reel
Industrial, –40°C to 85°C
CY2LL843SC
16-pin SOIC
Commercial, 0°C to 70°C
CY2LL843SCT
16-pin SOIC–Tape and Reel
Commercial, 0°C to 70°C
CY2LL843ZC
16-pin TSSOP
Commercial, 0°C to 70°C
CY2LL843ZCT
16-pin TSSOP–Tape and Reel
Commercial, 0°C to 70°C
Package Drawings and Dimensions
16-Lead (150-Mil) Molded SOIC S16
51-85068-A
Document #: 38-07066 Rev. *A
Page 11 of 13
ComLink™ Series
CY2LL843
Package Drawings and Dimensions (continued)
16-pin Thin Shrunk Small Outline Package (4.40 MM Body) Z16
51-85091
All product and company names mentioned in this document are the trademarks of their respective holders.
Document #: 38-07066 Rev. *A
Page 12 of 13
© Cypress Semiconductor Corporation, 2002. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use
of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize
its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress
Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.
ComLink™ Series
CY2LL843
Document Title: CY2LL843 High-drive Two-Channel LVDS Repeater/Mux
Document Number: 38-07066
REV.
ECN No.
Issue
Date
Orig. of
Change
Description of Change
**
116745
08/01/02
CTK
New Data sheet
*A
122751
12/14/02
RBI
Add power up requirements to operating conditions information
Document #: 38-07066 Rev. *A
Page 13 of 13