ST56034ARMG [MICROCHIP]
MUX/DEMUX, QCC32;
| 型号： | ST56034ARMG |
| 厂家： | 
MICROCHIP |
| 描述： | MUX/DEMUX, QCC32 ATM 异步传输模式 电信 电信集成电路 |
| 文件： | 总13页 (文件大小：414K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SY56034AR
Low Voltage 1.2V/1.8V/2.5V 2:6 MUX with
Crosspoint Capability 5GHz/6.4Gbps
General Description
The SY56034AR is a fully differential, low voltage
1.2V/1.8V/2.5V CML 2:6 (2+4) MUX with crosspoint
capability. The SY56034AR can process clock signals
as fast as 5GHz or data patterns up to 6.4Gbps.
Precision Edge®
Features
• 1.2V/1.8V/2.5V CML 2:6 (2+4) MUX with Crosspoint
The differential input includes Micrel’s unique, 3-pin
input termination architecture that interfaces to
LVPECL, LVDS or CML differential signals as small
as 100mV (200mVpp) without any level-shifting or
termination resistor networks in the signal path. For
AC-coupled input interface applications, an internal
voltage reference is provided to bias the VT pin. The
outputs are 400mV CML, with extremely fast rise/fall
times guaranteed to be less than 80ps.
Capability
• Guaranteed AC performance over temperature and
voltage:
– DC-to- > 6.4Gbps throughput
– <300ps propagation delay (IN-to-Q)
– <25ps Output skew
– <80ps rise/fall times
• Ultra-low jitter design
– <1psRMS cycle-to-cycle jitter
– <10psPP total jitter
– <1psRMS random jitter
– <10psPP deterministic jitter
• High-speed CML outputs
The SY56034AR operates from a 2.5V ±5% core
supply and a 1.2V/1.8V/2.5V ±5% output supply and
is guaranteed over the full industrial temperature
range (–40°C to +85°C). The SY56034AR is part of
Micrel’s high-speed, Precision Edge® product line.
Datasheets and support documentation can be found
on Micrel’s web site at: www.micrel.com.
• 2.5V ±5% , 1.2V/1.8V/2.5V ±5% power supply
operation
• Industrial temperature range: –40°C to +85°C
• Available in 32-pin QFN package
Functional Block Diagram
Applications
• Data Distribution: OC-48, OC-48+FEC
• SONET clock and data distribution
• Fibre Channel clock and data distribution
• Gigabit Ethernet clock and data distribution
Markets
• Storage
• ATE
• Test and measurement
• Enterprise networking equipment
• High-end servers
• Access
• Metro area network equipment
Precision Edge is a registered trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
M9999-093008-A
hbwhelp@micrel.com or (408) 955-1690
September 2008
Micrel, Inc.
SY56034AR
Ordering Information(1)
Part Number
SY56034ARMG
SY56034ARMGTR(2)
Notes:
Package
Type
Operating
Range
Package Marking
Lead
Finish
QFN-32
Industrial
56034AR with Pb-Free
bar-line indicator
NiPdAu
Pb-Free
QFN-32
Industrial
56034AR with Pb-Free
bar-line indicator
NiPdAu
Pb-Free
1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC Electricals only.
2. Tape and Reel.
Pin Configuration
32-Pin QFN
Truth Table
SEL0
SEL1
Bank1
IN0
Bank2
IN0
L
L
L
H
L
IN0
IN1
H
H
IN1
IN0
H
IN1
IN1
M9999-093008-A
hbwhelp@micrel.com or (408) 955-1690
September 2008
2
Micrel, Inc.
SY56034AR
Pin Description
Pin Number
Pin Name
IN0, /IN0
IN1,/IN1
Pin Function
2,3
6,7
Differential Inputs: These input pairs are the differential signal inputs to the device.
They accept differential signals as small as 100mV (200mVPP). Each input pin
internally terminates with 50Ω to the VT pin.
1
8
VT0
VT1
Input Termination Center-Tap: Each side of the differential input pair terminates to a
VT pin. This pin provides a center-tap to a termination network for maximum
interface flexibility. An internal high impedance resistor divider biases VT to allow
input AC-coupling. For AC-coupling, bypass VT with a 0.1µF low ESR capacitor to
VCC. See “Interface Applications” subsection and Figure 2a.
4
5
SEL0
SEL1
These single-ended TTL/CMOS-compatible inputs select the inputs to the
crosspoint switch. Note that each of these inputs is internally connected to a 25kΩ
pull-up resistor and will default to a logic HIGH state if left open.
10, 31
VCC
Positive Power Supply: Bypass with 0.1µF//0.01µF low ESR capacitors as close to
the VCC pin as possible. Supplies input and core circuitry.
11,16,18,
23,25,30
VCCO
Output Supply: Bypass with 0.1µF//0.01µF low ESR capacitors as close to the VCCO
pins as possible. Supplies the output buffer.
9,17,24,32
GND,
Exposed pad
Ground: Exposed pad must be connected to a ground plane that is the same
potential as the ground pin.
29,28
27,26
22,21
20,19
15,14
13,12
Q0, /Q0
Q1, /Q1
Q2, /Q2
Q3, /Q3
Q4, /Q4
Q5, /Q5
CML Differential Output Pairs: Differential buffered copy of the selected input signal.
The output swing is typically 390mV. See “Interface Applications” subsection for
termination information. Output pairs Q0 to Q3 belong to Bank 1. Q4 and Q5 belong
to Bank 2.
M9999-093008-A
hbwhelp@micrel.com or (408) 955-1690
September 2008
3
Micrel, Inc.
SY56034AR
Absolute Maximum Ratings(1)
Operating Ratings(2)
Supply Voltage (VCC)............................... –0.5V to +3.0V
Supply Voltage (VCCO) ............................. –0.5V to +2.7V
VCC - VCCO ...............................................................<1.8V
VCCO - VCC ...............................................................<0.5V
Input Voltage (VIN)............................–0.5V to VCC + 0.5V
CML Output Voltage (VOUT)............... 0.6V to VCCO+0.5V
Current (VT)
Supply Voltage (VCC)..........................2.375V to 2.625V
(VCCO) ..........................1.14V to 2.625V
Ambient Temperature (TA) ................... –40°C to +85°C
Package Thermal Resistance(3)
QFN
Still-air (θJA)............................................ 50°C/W
Junction-to-board (ψJB) ......................... 20°C/W
Source or sink current on VT pin.................±100mA
Input Current
Source or sink current on (IN, /IN).................±50mA
Maximum operating Junction Temperature ..........125°C
Lead Temperature (soldering, 20sec.)..................260°C
Storage Temperature (Ts) ....................–65°C to +150°C
DC Electrical Characteristics(4)
TA = –40°C to +85°C, unless otherwise stated.
Symbol
Parameter
Condition
Min
Typ
Max
Units
VCC
Power Supply Voltage Range
VCC
2.375
1.14
1.7
2.5
1.2
1.8
2.5
2.625
1.26
1.9
V
V
V
V
VCCO
VCCO
VCCO
2.375
2.625
ICC
Power Supply Current
Power Supply Current
Max. VCC
100
96
140
126
mA
mA
ICCO
RIN
No Load. Max VCCO
Input Resistance
(IN-to-VT, /IN-to-VT )
45
90
50
55
Ω
Ω
RDIFF_IN
VIH
Differential Input Resistance
(IN-to-/IN)
100
110
Input HIGH Voltage
(IN, /IN)
IN, /IN
1.2
0.2
VCC
V
V
Input LOW Voltage
(IN, /IN)
VIH–0.1
VIL
VIH
VIL with VIH = 1.2V
IN, /IN
Input HIGH Voltage
(IN, /IN)
1.14
0.66
VCC
V
V
Input LOW Voltage
(IN, /IN)
VIH–0.1
VIL
VIN
VIL with VIH = 1.14V (1.2V-5%)
see Figure 3a
Input Voltage Swing
(IN, /IN)
0.1
0.2
1.0
V
VDIFF_IN
Differential Input Voltage Swing
(|IN - /IN|)
see Figure 3b
2.0
V
V
VT_IN
Voltage from Input to VT
1.28
Notes:
1. Permanent device damage may occur if absolute maximum ratings are exceeded. This is a stress rating only and functional operation is not
implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum ratings conditions
for extended periods may affect device reliability.
2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings.
3. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the device's most negative potential on the PCB. ψJB and θJA
values are determined for a 4-layer board in still-air number, unless otherwise stated. The circuit is designed to meet the DC specifications shown
in the above table after thermal equilibrium has been established.
4. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.
M9999-093008-A
hbwhelp@micrel.com or (408) 955-1690
September 2008
4
Micrel, Inc.
SY56034AR
CML Outputs DC Electrical Characteristics(5)
VCCO = 1.14V to 1.26V, RL = 50Ω to VCCO,
VCCO = 1.7V to 1.9V, 2.375V to 2.625V, RL = 50Ω to VCCO or 100Ω across the outputs.
VCC = 2.375V to 2.625V. TA = –40°C to +85°C, unless otherwise stated.
Symbol
Parameter
Condition
Min
Typ
Max
VCCO
475
950
55
Units
V
VOH
Output HIGH Voltage
Output Voltage Swing
RL = 50Ω to VCCO
See Figure 3a
VCCO-0.020 VCCO-0.010
VOUT
300
600
45
390
780
50
mV
mV
Ω
VDIFF_OUT
ROUT
Differential Output Voltage Swing See Figure 3b
Output Source Impedance
LVTTL/CMOS DC Electrical Characteristics(5)
VCC = 2.5V ±5%. TA = –40°C to +85°C, unless otherwise stated.
Symbol
VIH
Parameter
Condition
Min
Typ
Max
VCC
0.8
30
Units
V
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
2.0
VIL
V
IIH
-125
-300
µA
µA
IIL
Note:
5. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.
M9999-093008-A
hbwhelp@micrel.com or (408) 955-1690
September 2008
5
Micrel, Inc.
SY56034AR
AC Electrical Characteristics
VCCO = 1.14V to 1.26V, RL = 50Ω to VCCO,
VCCO = 1.7V to 1.9V, 2.375V to 2.625V, RL = 50Ω to VCCO or 100Ω across the outputs.
VCC = 2.375V to 2.625V. TA = –40°C to +85°C, unless otherwise stated.
Symbol
Parameter
Condition
Min
6.4
5
Typ
Max
Units
Gbps
GHz
ps
fMAX
Maximum Frequency
NRZ Data
VOUT > 200mV
Clock
tPD
Propagation Delay
IN-to-Q Figure 1
150
100
220
200
5
300
300
15
25
20
75
1
SEL-to-Q
Figure 1
ps
tSkew
Input-to-Input Skew
Output-to-Output skew
Output-to-Output skew
Part-to-Part Skew
Note 6
ps
Note 7, All Outputs or Q0-Q3
7
ps
Note 7, Q4-Q5
Note 8
4
ps
ps
tJitter
Data
Random Jitter
Deterministic Jitter
Note 9
psRMS
psPP
psRMS
psPP
psPP
Note 10
10
1
Clock
Cycle-to-Cycle Jitter Note 11
Total Jitter Note 12
10
0.7
Crosstalk Induced Jitter Note 13
(Adjacent Channel)
tR, tF
Output Rise/Fall Times
(20% to 80%)
At full output swing.
20
60
80
ps
≤4GHz Differential I/O
47
45
53
55
%
%
Duty Cycle
<5GHz Differential I/O
Notes:
6. Input-to-Input skew is the difference in time between both inputs, measured at the same output, for the same temperature, voltage and
transition.
7. Output-to-Output skew is the difference in time between both outputs, receiving data from the same input, for the same temperature, voltage and
transition.
8. Part-to-part skew is defined for two parts with identical power supply voltages at the same temperature and no skew at the edges at the
respective inputs.
9. Random jitter is measured with a K28.7 pattern, measured at ≤ f
.
MAX
10. Deterministic jitter is measured at 2.5Gbps with both K28.5 and 223–1 PRBS pattern.
11. Cycle-to-cycle jitter definition: the variation period between adjacent cycles over a random sample of adjacent cycle pairs. tJITTER
_CC = Tn –Tn+1,
where T is the time between rising edges of the output signal.
12. Total jitter definition: with an ideal clock input frequency of ≤ fMAX (device), no more than one output edge in 1012 output edges will deviate by
more than the specified peak-to-peak jitter value.
13. Crosstalk-induced jitter is defined as the added jitter that results from signals applied to the adjacent channel. It is measured at the output while
applying a similar, differential clock frequency to both inputs that is asynchronous with respect to each other.
M9999-093008-A
hbwhelp@micrel.com or (408) 955-1690
September 2008
6
Micrel, Inc.
SY56034AR
Interface Applications
CML Output Termination with VCCO 1.8V, 2.5V
For Input Interface Applications, see Figures 4a
through 4f. For CML Output Termination, see Figures
5a through Figure 5d.
For VCCO of 1.8V or 2.5V, Figure 5a and Figure 5b,
terminate with eitheΩr 50 -to-1.8V or Ω100
differentially across the outputs. AC- or DC-coupling
is fine. See Figure 5c for AC-coupling.
CML Output Termination with VCCO 1.2V
For VCCO of 1.2V, Figure 5a, terminate the output
with 50Ω-to-1.2V, DC coupled, not 100Ω differentially
across the outputs.
Input AC-Coupling
The SY56034AR input can accept AC-coupling from
any driver. Bypass VT with a 0.1µF low ESR capacitor
to VCC as shown in Figures 4c and 4d. VT has an
internal high impedance resistor divider as shown in
Figure 2a, to provide a bias voltage for AC-coupling.
If AC-coupling is used, Figure 5d, terminate into 50Ω -
to-1.2V before the coupling capacitor and then
connect to a high value resistor to a reference
voltage.
Do not AC couple with internally terminated receiver.
For example, 5Ω0 ANY -IN input. AC-coupling will
offset the output voltage by 200mV and this offset
voltage will be too low for proper driver operation. Any
unused output pair needs to be terminated when
VCCO is 1.2V, do not leave floating.
Timing Diagrams
Figure 1. Propagation Delay
M9999-093008-A
hbwhelp@micrel.com or (408) 955-1690
September 2008
7
Micrel, Inc.
SY56034AR
Typical Characteristics
VCC = 2.5V, VCCO =1.2V, GND = 0V, VIN = 100mV, RL = 50Ω to 1.2V, TA = 25°C, unless otherwise stated.
M9999-093008-A
hbwhelp@micrel.com or (408) 955-1690
September 2008
8
Micrel, Inc.
SY56034AR
Functional Characteristics
VCC = 2.5V, VCCO =1.2V, GND = 0V, VIN = 400mV, RL = 50Ω to 1.2V, TA = 25°C, unless otherwise stated.
M9999-093008-A
hbwhelp@micrel.com or (408) 955-1690
September 2008
9
Micrel, Inc.
SY56034AR
Input and Output Stage
Figure 2b. Simplified CML Output Buffer
Figure 2a. Simplified Differential Input Buffer
Single-Ended and Differential Swings
Figure 3a. Single-Ended Swing
Figure 3b. Differential Swing
M9999-093008-A
hbwhelp@micrel.com or (408) 955-1690
September 2008
10
Micrel, Inc.
SY56034AR
Input Interface Applications
Figure 4a. CML Interface
(DC-Coupled, 1.8V, 2.5V)
Option: VT may be connected to VCC
Figure 4b. CML Interface
(DC-Coupled, 1.2V)
Figure 4c. CML Interface
(AC-Coupled)
Figure 4d. LVPECL Interface
(AC-Coupled)
Figure 4e. LVPECL Interface
(DC-Coupled)
Figure 4f. LVDS Interface
M9999-093008-A
hbwhelp@micrel.com or (408) 955-1690
September 2008
11
Micrel, Inc.
SY56034AR
CML Output Termination
Figure 5a. 1.2V 1.8V or 2.5V
Figure 5b. 1.8V or 2.5V
CML DC-Coupled Termination
CML DC-Coupled Termination
Figure 5d. CML AC-Coupled Termination
(VCCO 1.2V only)
Figure 5c. CML AC-Coupled Termination
(VCCO 1.8V or 2.5V only)
Related Product and Support Documents
Part Number
Function
Datasheet Link
HBW Solutions
New Products and Termination Application Notes
http://www.micrel.com/page.do?page=/product-
info/as/HBWsolutions.shtml
M9999-093008-A
hbwhelp@micrel.com or (408) 955-1690
September 2008
12
Micrel, Inc.
SY56034AR
Package Information
32-Pin QFN
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for
its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a
product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for
surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant
injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk
and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale.
© 2008 Micrel, Incorporated.
M9999-093008-A
hbwhelp@micrel.com or (408) 955-1690
September 2008
13
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