PI6C49S1510AZDIEX [DIODES]

Low Skew Clock Driver,;
PI6C49S1510AZDIEX
型号: PI6C49S1510AZDIEX
厂家: DIODES INCORPORATED    DIODES INCORPORATED
描述:

Low Skew Clock Driver,

驱动 逻辑集成电路
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中文:  中文翻译
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A product Line of  
Diodes Incorporated  
PI6C49S1510A  
High Performance Differential Fanout Buffer  
Features  
Description  
Î10 differential outputs with 2 banks  
e PI6C49S1510A is a high performance fanout buffer device-  
which supports up to 1.5GHz frequency. It also integrates a  
unique feature with user configurable output signaling standards  
on per bank basis which provide great flexibilities to users. e  
device also uses Pericom's proprietary input detection technique  
to make sure illegal input conditions will be detected and re-  
flected by output states. is device is ideal for systems that need  
to distribute low jitter clock signals to multiple destinations.  
ÎUser configurable output signaling standard for each bank:  
LVDS or LVPECL or HCSL  
ÎLVCMOS reference output up to 200MHz  
ÎUp to 1.5GHz output frequency for differential outputs  
ÎUltra low additive phase jitter: < 0.02 ps (typ) (differential  
156.25MHz, 12KHz to 20MHz integration range); < 0.01 ps  
(typ) (differential 156.25MHz, 10kHz to 1MHz integration  
range)  
Applications  
ÎNetworking systems including switches and Routers  
ÎSelectable reference inputs support either single-ended  
or differential or Xtal  
ÎHigh frequency backplane based computing and telecom  
ÎLow skew between outputs within banks (<40ps)  
ÎLow delay from input to output (Tpd typ. < 0.9ns)  
ÎSeparate Input output supply voltage for level shiꢀing  
Î2.5V / 3.3V power supply  
platforms  
ÎIndustrial temperature support  
ÎTQFN-48 package  
Pin Configuration (48-TQFN)  
Block Diagram  
OPMODEA[1:0]  
48 47 46 45 44 43 42 41 40 39 38 37  
1
QA[0:4]  
QAO+  
QAO-  
QA1+  
QA1-  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
QBO+  
QBO-  
QB1+  
QB1-  
5
2
3
X1  
OSC  
X2  
4
OPMODEB[1:0]  
IN0+  
IN0-  
5
V
V
DDO  
DDO  
QB[0:4]  
5
6
QA2+  
QA2-  
QB2+  
QB2-  
IN1+  
IN1-  
7
Ref_Out  
8
V
V
DDO  
DDO  
9
QA3+  
QA3-  
QA4+  
QA4-  
QB3+  
QB3-  
QB4+  
QB4-  
IN_SEL[1:0]  
10  
11  
12  
Sync_OE  
Iref  
Sync  
13 14 15 16 17 18 19 20 21 22 23 24  
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January 2018  
© Diodes Incorporated  
PI6C49S1510A  
Document Number DS40482 Rev 2-2  
1
A product Line of  
Diodes Incorporated  
PI6C49S1510A  
Pin Description  
Pin #  
Pin Name  
Type  
Description  
QA0+  
QA0-  
QA1+  
QA1-  
VDDO  
QA2+  
QA2-  
QA3+  
QA3-  
QA4+  
QA4-  
Bank A differential output pair 0. Pin selectable LVPECL/LVDS/HCSL  
interface levels.  
1,2  
Output  
Bank A differential output pair 1. Pin selectable LVPECL/LVDS/HCSL  
interface levels.  
3,4  
Output  
Power  
5,8,29,32,45  
6,7  
Power supply pins for IO  
Bank A differential output pair 2. Pin selectable LVPECL/LVDS/HCSL  
interface levels.  
Output  
Bank A differential output pair 3. Pin selectable LVPECL/LVDS/HCSL  
interface levels.  
9,10  
Output  
Output  
Bank A differential output pair 4. Pin selectable LVPECL/LVDS/HCSL  
interface levels.  
11,12  
13,18,24,37,43,48 GND  
Power  
Power supply ground  
Output mode select for Bank A. See Table 2 for functions, LVCMOS/  
LVTTL interface levels  
14,47  
OPMODEA  
Input Pulldown  
15,42  
16  
Power  
Input  
Power supply pins  
VDD  
X1  
XTAL input, can also be used as single ended input pin  
XTAL output. If X1 is used as a single ended input pin, X2 is to be leꢀ  
open  
17  
X2  
Output  
Input clock sele ct. See Table 1 for function. LVCMOS/LVTTL interface  
levels.  
19,22  
20  
IN_SEL  
IN0+  
Input Pulldown  
Input Pulldown Reference input 0  
Pull-up/  
21  
IN0-  
Input  
Inverted reference input 0, internal bias to VDD/2  
Pulldown  
Output mode select for Bank B. See Table 2for functions, LVCMOS/  
LVTTL interface levels  
23,39  
26,25  
OPMODEB  
Input Pulldown  
Output  
QB4+  
QB4-  
QB3+  
QB3-  
QB2+  
QB2-  
QB1+  
QB1-  
Bank B differential output pair 4. Pin selectable LVPECL/LVDS/HCSL  
interface levels.  
Bank B differential output pair 3. Pin selectable LVPECL/LVDS/HCSL  
interface levels.  
28,27  
31,30  
34,33  
Output  
Output  
Output  
Bank B differential output pair 2. Pin selectable LVPECL/LVDS/HCSL  
interface levels.  
Bank B differential output pair 1. Pin selectable LVPECL/LVDS/HCSL  
interface levels.  
www.diodes.com  
January 2018  
© Diodes Incorporated  
PI6C49S1510A  
Document Number DS40482 Rev 2-2  
2
A product Line of  
Diodes Incorporated  
PI6C49S1510A  
Pinout Description Cont.  
Pin #  
Pin Name  
QB0+  
Type  
Description  
Bank B differential output pair 0. Pin selectable LVPECL/LVDS/HCSL  
interface levels.  
36,35  
Output  
QB0-  
A fixed precision resistor (475ohm) from this pin to ground provides a  
reference current for HCSL mode. If LVPECL or LVDS mode chosen,  
pin can be leꢀ open  
38  
40  
Iref  
Output  
Input  
Pull-up/  
Pulldown  
IN1-  
Inverted reference input, internal bias to VDD/2  
41  
44  
46  
IN1+  
Input  
Pulldown Reference input 1  
Reference output, CMOS  
Ref_Out  
Sync_OE  
Output  
Input  
Pulldown Synchronous output enable for Ref_Out, see Table 3 for functions  
Function Table  
Table 1: Input select function  
IN_SEL [1]  
IN_SEL [0]  
Function  
0
0
1
0
IN0 is the selected reference input  
IN1 is the selected reference input  
XTAL is the selected input  
1
X
Table 2: Output Mode select function  
OPMODEA/B [1]  
OPMODEA/B [0]  
Output Bank A / Bank B Mode  
0
0
1
1
0
1
0
1
LVPECL  
LVDS  
HCSL  
Hi-Z  
Table 3: Reference output enable function  
Sync_OE  
Ref_Out  
0
1
Hi-Z  
Output enabled  
Table 4: Illegal input level function  
Input illegal status  
Output status  
Input open  
Logic Low  
Logic Low  
Logic Low  
Input both high  
Input both low  
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January 2018  
© Diodes Incorporated  
PI6C49S1510A  
Document Number DS40482 Rev 2-2  
3
A product Line of  
Diodes Incorporated  
PI6C49S1510A  
Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested)  
Note:  
Storage temperature...................................................-55 to +150ºC  
Stresses greater than those listed under MAXIMUM  
Supply Voltage to Ground Potential (VDD, VDDO)... -0.5 to +4.6V  
Inputs (Referenced to GND) ............................. -0.5 to VDD+0.5V  
Clock Output (Referenced to GND)................. -0.5 to VDD+0.5V  
Latch up..................................................................................200mA  
ESD Protection (Input) ..................................2000 V min (HBM)  
Junction Temperature ................................................. 125 °C max  
RATINGS may cause permanent damage to the device. is  
is a stress rating only and functional operation of the device  
at these or any other conditions above those indicated in  
the operational sections of this specification is not implied.  
Exposure to absolute maximum rating conditions for ex-  
tended periods may affect reliability.  
Power Supply Characteristics and Operating Conditions  
Symbol  
Parameter  
Test Condition  
Min.  
2.375  
2.375  
Typ.  
Max.  
3.465  
3.465  
120  
Units  
Core Supply Voltage  
Output Supply Voltage  
Core Power Supply Current  
V
V
VDD  
VDDO  
IDD  
90  
All LVPECL outputs unloaded  
All LVDS outputs loaded  
150  
110  
80  
190  
130  
120  
85  
mA  
Output Power Supply Current  
IDDO  
All HCSL outputs unloaded  
Ambient Operating Temperature1  
PCB Operating Temperature1  
-40  
-40  
°C  
°C  
TA  
TB  
105  
Note 1: Either TA or TB used as operating condition  
DC Electrical Specifications - Differential Inputs  
Symbol  
Parameter  
Test Condition  
Min.  
Typ.  
Max.  
Units  
uA  
uA  
PF  
Input High current  
Input Low current  
Input capacitance  
Input high voltage  
Input low voltage  
150  
IIH  
Input = VDD  
Input = GND  
-150  
IIL  
3
CIN  
VIH  
VIL  
V
VDD+0.3  
-0.3  
0.15  
V
Input Differential Amplitude  
PK-PK  
V
VID  
VDD-0.85  
VDD-0.85  
Common model input voltage  
MUX isolation  
GND + 0.5  
V
VCM  
ISOMUX  
-89  
dBc  
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January 2018  
© Diodes Incorporated  
PI6C49S1510A  
Document Number DS40482 Rev 2-2  
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A product Line of  
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PI6C49S1510A  
DC Electrical Specifications - LVCMOS Inputs  
Symbol Parameter  
Conditions  
Min.  
Typ.  
Max.  
Units  
Input High current  
150  
uA  
uA  
V
IIH  
Input = VDD  
Input Low current  
Input high voltage  
Input low voltage  
Input high voltage  
Input low voltage  
Input = GND  
-150  
2.0  
IIL  
VIH  
VIL  
VIH  
VIL  
VDD=3.3V  
VDD=3.3V  
VDD=2.5V  
VDD=2.5V  
VDD+0.3  
0.8  
-0.3  
1.7  
V
V
VDD+0.3  
0.7  
-0.3  
V
DC Electrical Specifications- LVPECL Outputs  
Parameter  
Description  
Conditions  
Min.  
Typ.  
Typ.  
Max.  
Units  
Output High voltage  
V
VOH  
VDDO-1.4  
VDDO-0.9  
Output Low voltage  
V
VOL  
VDDO-2.2  
VDDO-1.7  
DC Electrical Specifications- LVDS Outputs  
Parameter  
Description  
Conditions  
Min.  
Max.  
Units  
Output High voltage  
Output Low voltage  
1.43  
1.0  
V
V
V
VOH  
VOL  
Vocm  
Output commode voltage  
1.25  
Change in Vocm between com-  
pletely output states  
DVocm  
50  
mV  
W
Ro  
Output impedance  
85  
140  
DC Electrical Specifications – HCSL Outputs  
Parameter  
Description  
Conditions  
Min.  
520  
Typ.  
Max.  
900  
Units  
mV  
Output High voltage  
Output Low voltage  
VOH  
VOL  
-150  
150  
mV  
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January 2018  
© Diodes Incorporated  
PI6C49S1510A  
Document Number DS40482 Rev 2-2  
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A product Line of  
Diodes Incorporated  
PI6C49S1510A  
DC Electrical Specifications – LVCMOS Output  
Parameter Description  
Conditions  
Min.  
2.3  
Typ.  
Max.  
Units  
V
V
V
V
V
V
V
V
Ω
Ω
VDDO=3.3V +/-5%, IOH = 8mA  
DDO=2.5V +/- 5%, IOH = 8mA  
VDDO=3.3V +/-5%, IOL = -8mA  
DDO=2.5V +/- 5%, IOL = -8mA  
VDDO=3.3V +/-5%, IOH = 24mA  
DDO=2.5V +/- 5%, IOH = 16mA  
VDDO=3.3V +/-5%, IOL = -24mA  
DDO=2.5V +/- 5%, IOL = -16mA  
Output High voltage  
VOH  
VOL  
VOH  
1.5  
V
0.5  
0.4  
Output Low voltage  
Output High voltage  
V
2.1  
1.5  
V
1
Output Low voltage  
Output Impedance  
VOL  
RIUT  
0.8  
V
VDDO = 3.3V 5%  
17  
22  
VDDO = 2.5V 5%  
AC Electrical Specifications – Differential Outputs  
Parameter Description  
Conditions  
Min.  
Typ.  
Max. Units  
LVPECL, LVDS  
HCSL  
1500  
MHz  
250  
Clock output frequency  
FOUT  
LVPECL  
LVDS  
120  
120  
300  
120  
120  
300  
150  
150  
300  
Output rise time  
Output fall time  
From 20% to 80%  
From 80% to 20%  
300  
700  
300  
300  
700  
ps  
ps  
Tr  
HCSL  
LVPECL  
LVDS  
150  
150  
Tf  
HCSL  
LVPECL,  
HCSL  
(<250MHz)  
48  
52  
Frequency<650MHz,  
VID ≥ 400mV  
LVDS  
47  
45  
45  
53  
55  
55  
Frequency<1GHz,  
VID ≥ 400mV  
LVPECL  
LVDS  
Output duty cycle  
%
TODC  
Frequency<1.5GHz,  
VID ≥ 400mV  
LVDS  
40  
40  
60  
60  
Frequency<1.5GHz, VID  
≥ 400mV  
LVPECL  
LVPECL outputs @ <1GHz  
LVPECL outputs @ >1GHz  
LVDS outputs @ <1GHz  
LVDS outputs @ >1GHz  
500  
400  
250  
250  
1100  
1000  
600  
Output swing Single-ended  
mV  
VPP  
550  
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January 2018  
© Diodes Incorporated  
PI6C49S1510A  
Document Number DS40482 Rev 2-2  
6
A product Line of  
Diodes Incorporated  
PI6C49S1510A  
AC Electrical Specifications – Differential Outputs Cont.  
Parameter Description  
Conditions  
Min.  
Typ.  
Max. Units  
156.25MHz, 12kHz to 20MHz  
156.25MHz, 10kHz to 1MHz  
HCSL  
0.02  
0.01  
460  
ps  
ps  
Buffer additive jitter RMS  
T
j
Absolute crossing voltage  
mV  
VCROSS  
Total variation of crossing  
voltage  
HCSL  
140  
40  
mV  
DVCROSS  
10 outputs devices, out-  
puts in same tank, with  
same load, at DUT.  
Output Skew  
15  
ps  
TSK  
LVPECL, LVDS @ 3.3V, 100MHz  
HCSL @ 3.3V, 100MHz  
570  
900  
ps  
ps  
ns  
ns  
ps  
Propagation Delay  
TPD  
Valid to HiZ  
80  
80  
TOD  
HiZ to valid  
Part to Part Skew1  
TOE  
80  
120  
TP2P Skew  
AC Electrical Specifications – CMOS  
Parameter Description  
Conditions  
Min.  
Typ.  
Max. Units  
XTAL input  
Reference input  
XTAL input  
Reference input  
CL = 10pF  
10  
50  
MHz  
MHz  
ps  
Ref_Out frequency  
FOUT  
200  
0.3  
0.03  
1.5  
Buffer additive jitter RMS  
T
j
ps  
Rise time, Fall time  
Output duty cycle  
ns  
tr/ tf  
TODC  
tPD  
45  
55  
%
CL = 10pF  
Propagation delay  
3.3V, 25MHz  
2200  
ps  
Setup time  
300  
2
ps  
tS  
Clock edge to output disable  
Clock edge to output enable  
Ref_Out  
Ref_Out  
4
4
cycles  
cycles  
tSOD  
2
tSOE  
Notes:  
1. is parameter is guaranteed by design  
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January 2018  
© Diodes Incorporated  
PI6C49S1510A  
Document Number DS40482 Rev 2-2  
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A product Line of  
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PI6C49S1510A  
Crystal Characteristics  
Parameter  
Min.  
Typ.  
Max.  
Units  
Mode of Oscillation  
Frequency Range  
Fundamental  
10  
10  
50  
70  
7
MHz  
Ω
Equivalent Series Resistance (ESR)  
Shunt Capacitance  
Load Capacitance  
pF  
18  
500  
pF  
Drive Level  
µW  
Recommended Crystals  
Pericom recommends:  
a) GC2500003 XTAL 49S/SMD(4.0 mm), 25M, CL=18pF, +/-30ppm  
http://www.pericom.com/pdf/datasheets/se/GC_GF.pdf  
b) FY2500091, SMD 5x3.2(4P), 25M, CL=18pF, +/-30ppm  
http://www.pericom.com/pdf/datasheets/se/FY_F9.pdf  
c) FL2500047, SMD 3.2x2.5(4P), 25M, CL=18pF, +/-20ppm  
http://www.pericom.com/pdf/datasheets/se/FL.pdf  
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January 2018  
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PI6C49S1510A  
Document Number DS40482 Rev 2-2  
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A product Line of  
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PI6C49S1510A  
Propagation Delay  
Output Skew  
Output Skew T  
SK  
Propagation Delay T  
PD  
V
OH  
IN+/IN-  
V
OL  
T
PLHx  
T
PHLx  
V
OH  
IN+/IN-  
QA/QB  
tPD  
t
PD  
CLKn  
V
OL  
V
OH  
T
SK  
TSK  
V
OH  
V
OL  
CLKn+1  
V
OL  
t
R
tF  
T
PLHy  
TPHLy  
T
SK = TPLHy - TPLHx or TSK = TPHLy - TPHLx  
Part to Part Skew  
Part-to-Part Skew  
VOH  
IN+/IN-  
VOL  
T
PLH1  
T
PHL1  
VOH  
Part1 CLK  
Part2 CLK  
V
OL  
TSK  
T
SK  
VOH  
VOL  
TPLH2  
TPHL2  
TSK = TPLH2 - TPLH1 or TSK = TPHL2 - TPHL1  
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PI6C49S1510A  
Document Number DS40482 Rev 2-2  
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PI6C49S1510A  
LVPECL/ LVDS Output Swing vs. Frequency  
LVPECL VPP vs Frequency  
LVDS VPP vs Frequency  
1000  
600  
500  
400  
300  
200  
100  
0
800  
600  
400  
200  
0
25  
100  
125  
312.5  
625  
1000  
1500  
25  
100  
125  
312.5  
625  
1000  
1500  
Frequency (MHz)  
Frequency (MHz)  
2.5V LVPECL  
3.3V LVPECL  
2.5V LVDS  
3.3V LVDS  
Propagation Delay vs Temperature  
Propagation Delay vs Temperature  
1800  
1600  
1400  
1200  
1000  
800  
600  
400  
200  
0
-40  
25  
85  
Temperature (°C)  
LVPECL  
LVDS  
HCSL  
CMOS  
1.5GHz LVPECL/ LVDS Waveform  
3.3V LVPECL Waveform  
2.5V LVPECL Waveform  
3.3V LVDS Waveform  
2.5V LVDS Waveform  
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PI6C49S1510A  
Document Number DS40482 Rev 2-2  
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A product Line of  
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PI6C49S1510A  
Phase Noise and Additive Jitter  
Output phase noise (Dark Blue) vs Input Phase noise (light blue)  
Additive jitter is calculated at 156.25MHz~27fs RMS (12kHz to 20MHz). Additive jitter = √(Output jitter2 - Input jitter2)  
Total phase jitter with 25MHz XTAL ~ 264fs RMS (12kHz ~20MHz)  
Configuration Test Load Board Termination for LVPECL/ LVDS Outputs  
LVPECL/ LVDS Buffer  
VDDQx  
Z = 50Ω  
o
L = 0 ~ 10 in.  
100Ω  
Z = 50Ω  
o
150Ω*  
150Ω*  
*Remove for LVDS  
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Document Number DS40482 Rev 2-2  
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PI6C49S1510A  
Configuration Test Load Board Termination for HCSL Outputs  
Rs  
33Ω  
5%  
Clock  
TLA  
DUT  
Rs  
33Ω  
5%  
Clock#  
TLB  
2pF  
5%  
2pF  
5%  
Rp  
49.9Ω  
1%  
Rp  
49.9Ω  
1%  
475Ω  
1%  
Configuration Test Load Board Termination for LVCMOS Outputs  
3.3V ±5%  
V
V
DD  
DDO  
10pF  
GND  
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Application Information  
Wiring the differential input to accept single ended levels  
Figure 1 shows how the differential input can be wired to accept single ended levels. The reference voltage V_REF = VDD/2 is gener-  
ated by the bias resistors R1, R2 and C1. This bias circuit should be located as close as possible to the input pin. The ratio of R1 and  
R2 might need to be adjusted to postion the V_REF in the center of the input voltage swing. For example, if the input clock swing is  
only 2.5V and VDD = 3.3V, V_REF should be 1.25V and R1/R2 = 0.609.  
VDD  
R1  
1K  
Single Ended  
Clock Input  
CLK  
/CLK  
C1  
R2  
0.1µ  
1K  
Figure 1. Single-ended input to Differential input device  
Power Supply Filtering Techniques  
As in any high speed analog circuitry, the power supply pins are vulnerable to random noise. To achieve optimum jitter performance,  
power supply isolation is required. All power pins should be individually connected to the power supply plane through vias, and 0.1μF  
an 1μF bypass capacitors should be used for each pin.  
VDD  
VDD  
0.1µF  
1µF  
VDDO  
VDDO  
0.1µF  
1µF  
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Document Number DS40482 Rev 2-2  
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Single Ended Input, AC couple  
Driving X1 with a Single Ended Input  
0.1µF  
0.1µF  
Rs  
X1  
X2  
CMOS  
Clock  
50Ω  
0.1µF  
Rs  
0.1µF  
CMOS  
Clock  
50Ω  
50Ω  
Input  
50Ω  
Differential  
Clock  
Input  
0.1µF  
Single Ended Input, DC couple  
Single Ended Input, DC couple  
VDD  
100Ω  
Rs  
Rs  
CMOS  
Clock  
CMOS  
Clock  
50Ω  
50Ω  
VDD  
Differential  
Clock  
100Ω  
Differential  
Clock  
Input  
Input  
0.1µF  
0.1µF  
LVPECL, DC Couple, Thevenin Equivalent  
LVPECL, AC Couple, Thevenin Equivalent  
VDDO  
VDDO  
RPU  
RPD  
RPU  
0.1µF  
QAn+/ QBn+  
QAn+/ QBn+  
VDDO  
VDDO  
RPD  
RT  
LVPECL  
Driver  
LVPECL  
Driver  
Clock  
Input  
LVPECL  
Receiver  
100Ω Differential  
100Ω Differential  
0.1µF  
RPU  
RPD  
RPU  
RPD  
QAn-/ QBn-  
QAn-/ QBn-  
RT  
VDDO RPU RPD  
3.3V 120Ω 82Ω  
2.5V 250Ω 62.5Ω  
VDDO RT RPU RPD  
3.3V 160Ω 120Ω 82Ω  
2.5V 91Ω 250Ω 62.5Ω  
www.diodes.com  
January 2018  
© Diodes Incorporated  
PI6C49S1510A  
Document Number DS40482 Rev 2-2  
14  
A product Line of  
Diodes Incorporated  
PI6C49S1510A  
LVDS DC Couple  
LVDS AC Couple at Load  
0.1µF  
QAn+/ QBn+  
QAn+/ QBn+  
kΩ  
LVDS  
Receiver  
LVDS  
Driver  
LVDS  
Driver  
100Ω Differential  
100Ω  
Vbias  
100Ω Differential  
100Ω  
kΩ  
QAn-/ QBn-  
QAn-/ QBn-  
0.1µF  
LVDS AC Couple with Internal Termination Single Ended LVPECL, DC Couple  
VDDO - 2V  
0.1µF  
50Ω  
QAn+/ QBn+  
QAn+/ QBn+  
50Ω  
50Ω  
LVDS  
Driver  
100Ω Differential  
Vbias  
50Ω  
LVPECL  
Driver  
VDDO - 2V  
QAn-/ QBn-  
0.1µF  
QAn-/ QBn-  
50Ω  
Single Ended LVPECL, DC Couple, Thevenin  
Equivalent  
Single Ended LVPECL, AC Couple, Thevenin  
Equivalent  
VDDO  
RPU  
0.1µF  
Load  
QAn+/ QBn+  
50Ω  
QAn+/ QBn+  
50Ω  
RT  
50Ω  
LVPECL  
Driver  
VDDO  
RPD  
LVPECL  
Driver  
0.1µF  
VDDO RPU RPD  
VDDO RT  
3.3V 160Ω  
2.5V 91Ω  
RPU  
3.3V 120Ω 82Ω  
QAn-/ QBn-  
2.5V 250Ω 62.5Ω  
RT  
50Ω  
QAn-/ QBn-  
RPD  
www.diodes.com  
January 2018  
© Diodes Incorporated  
PI6C49S1510A  
Document Number DS40482 Rev 2-2  
15  
A product Line of  
Diodes Incorporated  
PI6C49S1510A  
Clock IC Crystal Input Guide  
LVPECL/ LVDS AC and DC input  
*Remove for LVDS  
0.1uF  
(For AC Couple Only)  
Clock IC  
Rf  
IN+  
150Ω*  
Input  
Driver  
100Ω Differential  
100Ω  
C_in  
XTL_IN  
Cb  
C_out  
XTL_OUT  
IN-  
0.1uF  
(For AC Couple Only)  
150Ω*  
Cb  
C2  
Crystal (CL)  
C1  
www.diodes.com  
January 2018  
© Diodes Incorporated  
PI6C49S1510A  
Document Number DS40482 Rev 2-2  
16  
A product Line of  
Diodes Incorporated  
PI6C49S1510A  
Clock IC Crystal loading cap. design guide  
CL =crystal spec. loading cap.  
C_in/out = (3~5pF) of IC pin cap.  
Cb = PCB trace (2~4pF)  
Clock IC  
Rf  
C_in  
XTL_IN  
Cb  
C_out  
XTL_OUT  
C1,C2 = load cap. of design  
Rd = 50 to 100ohm drive level limit  
Cb  
C2  
Crystal (CL)  
C1  
Design guide: C1=C2=2 *CL - (Cb +C_in/out) to meet target +/-ppm < 20 ppm  
Example1: Select CL=18 pF crystal, C1=C2=2*(18pF) – (4pF+5pF)=27pF, check datasheet too  
Example2: For higher frequency crystal (=>20MHz), can use formula C1=C2=2*(CL-6), can do fine tune of C1, C2 for more accurate  
ppm if necessary  
Thermal Information  
Symbol  
Description  
Condition  
ΘJA  
ΘJC  
23.65 °C/W  
9.10 °C/W  
Junction-to-ambient thermal resistance  
Junction-to-case thermal resistance  
Still air  
Part Marking  
ZD Package  
PI6C49S  
1510AZDIE  
YYWWXX  
YY : Year  
WW : Workweek  
1st X : Assembly Site Code  
2nd X : Wafer Site Code  
www.diodes.com  
January 2018  
© Diodes Incorporated  
PI6C49S1510A  
Document Number DS40482 Rev 2-2  
17  
A product Line of  
Diodes Incorporated  
PI6C49S1510A  
Packaging Mechanical: 48-TQFN (ZD)  
16-0151  
For latest package info.  
please check: http://www.diodes.com/design/support/packaging/pericom-packaging/packaging-mechanicals-and-thermal-characteristics/  
Ordering Information  
Ordering Code  
Package Code Package Type  
Operating Temperature  
PI6C49S1510AZDIEX  
ZD  
48-Contact, Very in Quad Flat No-Lead (TQFN)  
-40 °C to 85 °C  
Notes:  
1. EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. All applicable RoHS exemptions applied.  
2. See http://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- andAntimony-free, “Green” and Lead-free.  
Thermal characteristics can be found on the company web site at www.diodes.com/design/support/packaging/  
3. E = Pb-free and Green  
4. X suffix = Tape/Reel  
www.diodes.com  
January 2018  
© Diodes Incorporated  
PI6C49S1510A  
Document Number DS40482 Rev 2-2  
18  
A product Line of  
Diodes Incorporated  
PI6C49S1510A  
IMPORTANT NOTICE  
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT  
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER  
THE LAWS OF ANY JURISDICTION).  
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further no-  
tice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or  
any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer  
or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all  
the companies whose products are represented on Diodes Incorporated website, harmless against all damages.  
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.  
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes  
Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal  
injury or death associated with such unintended or unauthorized application.  
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein  
may also be covered by one or more United States, international or foreign trademarks.  
This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the final and determi-  
native format released by Diodes Incorporated.  
LIFE SUPPORT  
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval  
of the Chief Executive Officer of Diodes Incorporated. As used herein:  
A. Life support devices or systems are devices or systems which:  
1. are intended to implant into the body, or  
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably  
expected to result in significant injury to the user.  
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the  
failure of the life support device or to affect its safety or effectiveness.  
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge  
and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated  
products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by  
Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes  
Incorporated products in such safety-critical, life support devices or systems.  
Copyright © 2016, Diodes Incorporated  
www.diodes.com  
www.diodes.com  
January 2018  
© Diodes Incorporated  
PI6C49S1510A  
Document Number DS40482 Rev 2-2  
19  

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