ICS85214AGILF [IDT]

Low Skew Clock Driver, 85214 Series, 5 True Output(s), 0 Inverted Output(s), PDSO20, 6.50 X 4.40 MM, 0.92 MM HEIGHT, ROHS COMPLIANT, MO-150, TSSOP-20;
ICS85214AGILF
型号: ICS85214AGILF
厂家: INTEGRATED DEVICE TECHNOLOGY    INTEGRATED DEVICE TECHNOLOGY
描述:

Low Skew Clock Driver, 85214 Series, 5 True Output(s), 0 Inverted Output(s), PDSO20, 6.50 X 4.40 MM, 0.92 MM HEIGHT, ROHS COMPLIANT, MO-150, TSSOP-20

驱动 光电二极管 逻辑集成电路
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Low Skew, 1-to-5, Differential-to-HSTL  
Fanout Buffer  
ICS85214I  
DATA SHEET  
GENERAL DESCRIPTION  
FEATURES  
The ICS85214I is a low skew, high performance 1-to-5 Differ- Five differential HSTL compatible outputs  
ential-to-HSTL Fanout Buffer. The CLK0, nCLK0 pair can accept  
Selectable differential CLK0, nCLK0 or LVCMOS/LVTTL  
clock inputs  
most standard differential input levels. The single ended CLK1 in-  
put accepts LVCMOS or LVTTL input levels. Guaranteed output  
and part to part skew characteristics make the ICS85214I  
ideal for those clock distribution applications demanding  
well defined performance and repeatability.  
CLK0, nCLK0 pair can accept the following differential  
input levels: LVDS, LVPECL, HSTL, HCSL  
CLK1 can accept the following input levels:  
LVCMOS or LVTTL  
Output frequency up to 700MHz  
Translates any single ended input signal to HSTL levels  
with resistor bias on nCLK0 input  
Output skew: 40ps (maximum)  
Part-to-part skew: 300ps (maximum)  
Propagation delay:1.8ns (maximum)  
3.3V core, 1.8V output operating supply  
Available in Lead-Free (RoHS 6) package  
-40°C to 85°C ambient operating temperature  
BLOCK DIAGRAM  
PIN ASSIGNMENT  
Q0  
nQ0  
Q1  
nQ1  
Q2  
nQ2  
Q3  
nQ3  
Q4  
1
2
3
4
5
6
7
8
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
VDDO  
nCLK_EN  
VDD  
D
nCLK_EN  
Q
LE  
nc  
CLK0  
nCLK0  
0
CLK1  
CLK0  
nCLK0  
nc  
CLK_SEL  
GND  
Q0  
nQ0  
1
CLK1  
Q1  
nQ1  
9
10  
CLK_SEL  
nQ4  
Q2  
nQ2  
ICS85214I  
Q3  
nQ3  
20-Lead TSSOP  
6.5mm x 4.4mm x 0.92mm package body  
G Package  
Top View  
Q4  
nQ4  
ICS8521AGI REVISION B MAY 6, 2011  
1
©2011 Integrated Device Technology, Inc.  
ICS85214I Data Sheet  
LOW SKEW, 1-TO-5, DIFFERENTIAL-TO-HSTL FANOUT BUFFER  
TABLE 1. PIN DESCRIPTIONS  
Number  
1, 2  
Name  
Q0, nQ0  
Q1, nQ1  
Q2, nQ2  
Q3, nQ3  
Q4, nQ4  
GND  
Type  
Description  
Output  
Output  
Output  
Output  
Output  
Power  
Differential output pair. HSTL interface levels.  
Differential output pair. HSTL interface levels.  
Differential output pair. HSTL interface levels.  
Differential output pair. HSTL interface levels.  
Differential output pair. HSTL interface levels.  
Power supply ground.  
3, 4  
5, 6  
7, 8  
9, 10  
11  
Clock select input. When HIGH, selects CLK1 input.  
When LOW, selects CLK0, nCLK0 input. LVTTL / LVCMOS interface levels.  
12  
CLK_SEL  
Input  
Pulldown  
Pullup  
13, 17  
14  
nc  
Unused  
Input  
No connect.  
nCLK0  
CLK0  
CLK1  
VDD  
Inverting differential clock input.  
15  
Input  
Pulldown Non-inverting differential clock input.  
Pulldown Clock input. LVTTL / LVCMOS interface levels.  
Power supply pin.  
16  
Input  
18  
Power  
Synchronizing clock enable. When LOW, clock outputs follow clock input.  
Pulldown When HIGH, Q outputs are forced low, nQ outputs are forced high.  
LVTTL / LVCMOS interface levels.  
19  
nCLK_EN  
Input  
20  
VDDO  
Power  
Output supply pin.  
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.  
TABLE 2. PIN CHARACTERISTICS  
Symbol Parameter  
Test Conditions  
Minimum Typical  
Maximum Units  
CIN  
Input Capacitance  
Input Pullup Resistor  
4
pF  
kΩ  
kΩ  
RPULLUP  
51  
51  
RPULLDOWN Input Pulldown Resistor  
ICS85214AGI REVISION B MAY 6, 2011  
2
©2011 Integrated Device Technology, Inc.  
ICS85214I Data Sheet  
LOW SKEW, 1-TO-5, DIFFERENTIAL-TO-HSTL FANOUT BUFFER  
TABLE 3A. CONTROL INPUT FUNCTIONT ABLE  
Inputs  
Outputs  
nCLK_EN  
Q0:Q4  
Enabled  
nQ0:nQ4  
0
1
Enabled  
Disabled; LOW  
Disabled; HIGH  
After nCLK_EN switches, the clock outputs are disabled or enabled following a rising and falling input clock edge  
as shown in Figure 1.  
In the active mode, the state of the outputs are a function of the CLK0, nCLK0 inputs as described in Table 3B.  
Enabled  
Disabled  
nCLK0  
CLK0  
nCLK_EN  
nQ0:nQ4  
Q0:Q4  
FIGURE 1. nCLK_ENTIMING DIAGRAM  
TABLE 3B. CLOCK INPUT FUNCTIONTABLE  
Inputs  
Outputs  
CLK1 Q0:Q4 nQ0:nQ4  
Input to Output Mode  
Polarity  
CLK_SEL  
CLK0  
nCLK0  
0
0
0
0
0
0
1
1
0
1
X
X
X
X
X
X
0
LOW  
HIGH  
LOW  
HIGH  
HIGH  
LOW  
LOW  
HIGH  
HIGH  
LOW  
HIGH  
LOW  
LOW  
HIGH  
HIGH  
LOW  
Differential to Differential  
Differential to Differential  
Non Inverting  
Non Inverting  
1
0
0
Biased; NOTE 1  
Single Ended to Differential Non Inverting  
Single Ended to Differential Non Inverting  
1
Biased; NOTE 1  
Biased; NOTE 1  
0
1
Single Ended to Differential  
Single Ended to Differential  
Inverting  
Inverting  
Biased; NOTE 1  
X
X
X
X
Single Ended to Differential Non Inverting  
Single Ended to Differential Non Inverting  
1
NOTE 1: Please refer to the Application Information section, "Wiring the Differential Input to Accept Single Ended Levels".  
ICS85214AGI REVISION B MAY 6, 2011  
3
©2011 Integrated Device Technology, Inc.  
ICS85214I Data Sheet  
LOW SKEW, 1-TO-5, DIFFERENTIAL-TO-HSTL FANOUT BUFFER  
ABSOLUTE MAXIMUM RATINGS  
Supply Voltage, VDD  
4.6V  
NOTE: Stresses beyond those listed under Absolute  
Maximum Ratings may cause permanent damage to the  
device.These ratings are stress specifications only.Functional  
operation of product at these conditions or any conditions be-  
yond those listed in the DC Characteristics or AC Character-  
istics is not implied. Exposure to absolute maximum rating  
conditions for extended periods may affect product reliability.  
Inputs, V  
-0.5V to VDD + 0.5V  
-0.5V to VDD + 0.5V  
I
Outputs, IO  
Package Thermal Impedance, θJA 73.2°C/W (0 lfpm)  
Storage Temperature, T -65°C to 150°C  
STG  
TABLE 4A. POWER SUPPLY DC CHARACTERISTICS, VDD = 3.3V 5ꢀ, VDDO = 1.8V 0.2V, TA = -40°C TO 85°C  
Symbol Parameter  
Test Conditions  
Minimum  
3.135  
Typical  
3.3  
Maximum Units  
VDD  
VDDO  
IDD  
Power Supply Voltage  
3.465  
2.0  
V
V
Output Power Supply Voltage  
Power Supply Current  
1.6  
1.8  
80  
mA  
TABLE 4B. LVCMOS / LVTTL DC CHARACTERISTICS, VDD = 3.3V 5ꢀ, VDDO = 1.8V 0.2V, TA = -40°C TO 85°C  
Symbol Parameter  
Test Conditions  
Minimum Typical Maximum Units  
nCLK_EN, CLK_SEL  
CLK1  
2
V
DD + 0.3  
DD + 0.3  
0.8  
V
V
V
V
VIH  
VIL  
Input High Voltage  
2
V
nCLK_EN, CLK_SEL  
CLK1  
-0.3  
-0.3  
Input Low Voltage  
1.3  
CLK1, CLK_SEL,  
nCLK_EN  
CLK1, CLK_SEL,  
nCLK_EN  
IIH  
IIL  
Input High Current  
Input Low Current  
VDD = VIN = 3.465V  
150  
µA  
µA  
VDD = 3.465V, VIN = 0V  
-5  
TABLE 4C. DIFFERENTIAL DC CHARACTERISTICS, VDD = 3.3V 5ꢀ,VDDO = 1.8V 0.2V, TA = -40°C TO 85°C  
Symbol Parameter  
IIH Input High Current  
Test Conditions  
VDD = VIN = 3.465V  
VDD = VIN = 3.465V  
VDD = 3.465V, VIN = 0V  
VDD = 3.465V, VIN = 0V  
Minimum Typical Maximum Units  
nCLK0  
CLK0  
5
µA  
µA  
µA  
µA  
V
150  
nCLK0  
CLK0  
-150  
-5  
IIL  
Input Low Current  
VPP  
Peak-to-Peak Input Voltage  
0.15  
1.3  
Common Mode Input Voltage;  
NOTE 1, 2  
VCMR  
0.5  
VDD - 0.85  
V
NOTE 1: For single ended applications the maximum input voltage for CLK0, nCLK0 is VDD + 0.3V.  
NOTE 2: Common mode voltage is defined as VIH.  
ICS85214AGI REVISION B MAY 6, 2011  
4
©2011 Integrated Device Technology, Inc.  
ICS85214I Data Sheet  
LOW SKEW, 1-TO-5, DIFFERENTIAL-TO-HSTL FANOUT BUFFER  
TABLE 4D. HSTL DC CHARACTERISTICS, VDD = 3.3V 5ꢀ, VDDO = 1.8V 0.2V, TA = -40°C TO 85°C  
Symbol Parameter  
Test Conditions  
Minimum  
Typical  
Maximum  
Units  
Output High Voltage;  
NOTE 1  
VOH  
1
1.4  
V
Output Low Voltage;  
NOTE 1  
VOL  
0
38ꢀ x (VOH - VOL) + VOL  
0.6  
0.4  
60ꢀ x (VOH - VOL) + VOL  
1.1  
V
V
V
VOX  
Output Crossover Voltage  
Peak-to-Peak  
Output Voltage Swing  
VSWING  
NOTE 1: Outputs terminated with 50Ω to ground.  
TABLE 5. AC CHARACTERISTICS, VDD = 3.3V 5ꢀ, VDDO = 1.8V 0.2V,TA = -40°C TO 85°C  
Symbol Parameter  
Test Conditions  
Minimum  
Typical  
Maximum Units  
CLK0, nCLK0  
CLK1  
700  
300  
1.8  
40  
MHz  
MHZ  
ns  
fOUT  
Output Frequency  
tPD  
Propagation Delay; NOTE 1  
ƒ700MHz  
1.0  
tsk(o)  
tsk(pp)  
tR / tF  
Output Skew; NOTE 2, 4  
Part-to-Part Skew; NOTE 3, 4  
Output Rise/Fall Time  
ps  
300  
800  
54  
ps  
20ꢀ to 80ꢀ  
200  
46  
ps  
CLK0, nCLK0  
CLK1  
odc  
Output Duty Cycle  
ƒ266MHz  
44  
56  
NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established  
when the device is mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet  
specifications after thermal equilibrium has been reached under these conditions.  
NOTE: All parameters measured at fOUT unless noted otherwise.  
NOTE: The cycle to cycle jitter on the input will equal the jitter on the output. The part does not add jitter.  
NOTE 1: Measured from the differential input crossing point to the differential output crossing point.  
NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions.  
Measured at output differential cross points.  
NOTE 3: Defined as skew between outputs on different devices operating at the same supply voltages  
and with equal load conditions. Using the same type of inputs on each device, the outputs are measured  
at the differential cross points.  
NOTE 4: This parameter is defined in accordance with JEDEC Standard 65.  
ICS85214AGI REVISION B MAY 6, 2011  
5
©2011 Integrated Device Technology, Inc.  
ICS85214I Data Sheet  
LOW SKEW, 1-TO-5, DIFFERENTIAL-TO-HSTL FANOUT BUFFER  
PARAMETER MEASUREMENT INFORMATION  
3.3V 5ꢀ  
1.8V 0.2V  
VDD  
SCOPE  
VDD  
Qx  
nCLK0  
CLK0  
VDDO  
VPP  
VCMR  
Cross Points  
HSTL  
GND  
nQx  
GND  
0V  
3.3V/1.8V OUTPUT LOAD ACTEST CIRCUIT  
DIFFERENTIAL INPUT LEVEL  
nQx  
PART 1  
Qx  
nQx  
Qx  
nQy  
nQy  
PART 2  
Qy  
Qy  
tsk(pp)  
tsk(o)  
OUTPUT SKEW  
PART-TO-PART SKEW  
80ꢀ  
tF  
80ꢀ  
tR  
CLK1  
VSWING  
20ꢀ  
Clock  
20ꢀ  
nQ0:nQ4  
Outputs  
Q0:Q4  
tPD  
OUTPUT RISE/FALLT IME  
nQ0:nQ4  
Q0:Q4  
nCLK0  
CLK0  
tPW  
tPERIOD  
nQ0:nQ4  
tPW  
Q0:Q4  
odc =  
x 100ꢀ  
tPD  
tPERIOD  
OUTPUT DUTY CYCLE/PULSEWIDTH/PERIOD  
PROPAGATION DELAY  
ICS85214AGI REVISION B MAY 6, 2011  
6
©2011 Integrated Device Technology, Inc.  
ICS85214I Data Sheet  
LOW SKEW, 1-TO-5, DIFFERENTIAL-TO-HSTL FANOUT BUFFER  
APPLICATIONS INFORMATION  
WIRING THE DIFFERENTIAL INPUT TO ACCEPT SINGLE ENDED LEVELS  
Figure 2 shows how a differential input can be wired to accept  
single ended levels.The reference voltageVREF =VDD/2 is generated  
by the bias resistors R1 and R2. The bypass capacitor (C1) is  
used to help filter noise on the DC bias. This bias circuit should  
be located as close to the input pin as possible. The ratio of R1  
and R2 might need to be adjusted to position the VREF in the  
center of the input voltage swing. For example, if the input clock  
swing is 2.5V and VDD = 3.3V, R1 and R2 value should be adjusted  
to set VREF at 1.25V.The values below are for when both the single-  
ended swing and VDD are at the same voltage. This configuration  
requires that the sum of the output impedance of the driver (Ro)  
and the series resistance (Rs) equals the transmission line  
impedance. In addition, matched termination at the input will  
attenuate the signal in half. This can be done in one of two ways.  
First, R3 and R4 in parallel should equal the transmission line  
impedance. For most 50 applications, R3 and R4 can be 100Ω.  
The values of the resistors can be increased to reduce the loading  
for slower and weaker LVCMOS driver. When using single ended  
signaling, the noise rejection benefits of differential signaling are  
reduced. Even though the differential input can handle full rail  
LVCMOS signaling, it is recommended that the amplitude be  
reduced. The datasheet specifies a lower differential amplitude,  
however this only applies to differential signals. For single-ended  
applications, the swing can be larger, however VIL cannot be less  
than -0.3V and VIH cannot be more than VDD + 0.3V. Though some  
of the recommended components might not be used, the pads  
should be placed in the layout. They can be utilized for debugging  
purposes. The datasheet specifications are characterized and  
guaranteed by using a differential signal.  
FIGURE 2. SINGLE ENDED SIGNAL DRIVING DIFFERENTIAL INPUT  
ICS85214AGI REVISION B MAY 6, 2011  
7
©2011 Integrated Device Technology, Inc.  
ICS85214I Data Sheet  
LOW SKEW, 1-TO-5, DIFFERENTIAL-TO-HSTL FANOUT BUFFER  
DIFFERENTIAL CLOCK INPUT INTERFACE  
The CLK /nCLK accepts LVDS, LVPECL, HSTL, HCSL and examples only. Please consult with the vendor of the driver  
other differential signals. Both differential signals must meet component to confirm the driver termination requirements. For  
the VPP and VCMR input requirements. Figures 3A to 3E show example in Figure 3A, the input termination applies for IDT  
interface examples for the CLK/nCLK input driven by the most open emitter LVHSTL drivers. If you are using an LVHSTL  
common driver types. The input interfaces suggested here are driver from another vendor, use their termination  
3.3V  
3.3V  
3.3V  
1.8V  
Zo = 50Ω  
Zo = 50Ω  
Zo = 50Ω  
CLK  
CLK  
Zo = 50Ω  
nCLK  
Differential  
Input  
nCLK  
LVPECL  
Differential  
Input  
R1  
50  
R2  
50  
LVHSTL  
R1  
50  
R2  
50  
IDT  
HiPerClockS  
LVHSTL Driver  
R2  
50  
FIGURE 3A. CLK/nCLK INPUT DRIVEN BY AN  
FIGURE 3B. CLK/nCLK INPUT DRIVEN BY A  
3.3V LVPECL DRIVER  
IDT OPEN EMITTER LVHSTL DRIVER  
3.3V  
3.3V  
3.3V  
3.3V  
3.3V  
R3  
125  
R4  
125  
Zo = 50Ω  
Zo = 50Ω  
Zo = 50Ω  
CLK  
CLK  
R1  
100  
nCLK  
nCLK  
Zo = 50Ω  
Differential  
Input  
Receiver  
LVPECL  
LVDS  
R1  
84  
R2  
84  
FIGURE 3C. CLK/nCLK INPUT DRIVEN BY A  
3.3V LVPECL DRIVER  
FIGURE 3D. CLK/nCLK INPUT DRIVEN BY A  
3.3V LVDS DRIVER  
2.5V  
3.3V  
Zo = 50Ω  
*R3  
*R4  
33  
33  
CLK  
Zo = 50Ω  
nCLK  
Differential  
Input  
HCSL  
R1  
50  
R2  
50  
*Optional – R3 and R4 can be 0Ω  
FIGURE 3E. CLK/nCLK INPUT DRIVEN BY A  
3.3V HCSL DRIVER  
ICS85214AGI REVISION B MAY 6, 2011  
8
©2011 Integrated Device Technology, Inc.  
ICS85214I Data Sheet  
LOW SKEW, 1-TO-5, DIFFERENTIAL-TO-HSTL FANOUT BUFFER  
SCHEMATIC EXAMPLE  
Figure 4 shows a schematic example of the ICS85214I. In this near the power pin. For ICS85214I, the unused outputs can be  
example, the input is driven by an HSTL driver. The decoupling left floating.  
capacitors should be physically located  
Zo = 50  
+
Zo = 50  
-
R2  
50  
R1  
50  
U1  
1.8V  
R12 1K  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
10  
9
8
7
6
5
4
3
2
1
GND  
CLK_SEL  
nc  
nCLK  
CLK  
SCLK  
nc  
VDD  
nCLK_EN  
VDDO  
nQ4  
Q4  
nQ3  
Q3  
nQ2  
Q2  
nQ1  
Q1  
nQ0  
Q0  
Zo = 50  
Zo = 50  
+
-
Zo = 50 Ohm  
Zo = 50 Ohm  
3.3V  
C2  
1.8V  
R4  
50  
R3  
50  
LVHSTL Driver  
R9  
50  
R10  
50  
0.1u  
C1  
0.1u  
ICS85214I  
Zo = 50  
+
-
R11  
1K  
Zo = 50  
R8  
50  
R7  
50  
FIGURE 4. ICS85214I HSTL BUFFER SCHEMATIC EXAMPLE  
ICS85214AGI REVISION B MAY 6, 2011  
9
©2011 Integrated Device Technology, Inc.  
ICS85214I Data Sheet  
LOW SKEW, 1-TO-5, DIFFERENTIAL-TO-HSTL FANOUT BUFFER  
POWER CONSIDERATIONS  
This section provides information on power dissipation and junction temperature for the ICS85214I.  
Equations and example calculations are also provided.  
1. Power Dissipation.  
The total power dissipation for the ICS85214I is the sum of the core power plus the power dissipated in the load(s).  
The following is the power dissipation for VDD = 3.3V + 5ꢀ = 3.465V, which gives worst case results.  
NOTE: Please refer to Section 3 for details on calculating power dissipated in the load.  
Power (core)MAX = VDD_MAX * IDD_MAX = 3.465V * 80mA = 227.2mW  
Power (outputs)MAX = 32.8mW/Loaded Output pair  
If all outputs are loaded, the total power is 5 * 32.8mW = 164mW  
Total Power_MAX (3.465V, with all outputs switching) = 227.2mW + 164mW = 391.2mW  
2. Junction Temperature.  
Junction temperature at the junction of the bond wire and bond pad directly affects the reliability of the device. The maximum  
recommended junction temperature is 125°C. Limiting the internal transistor junction temperature, Tj, to 125°C ensures that the bond  
wire and bond pad temperature remains below 125°C.  
The equation for Tj is as follows: Tj = θJA * Pd_total + TA  
Tj = Junction Temperature  
θJA = Junction-to-Ambient Thermal Resistance  
Pd_total = Total Device Power Dissipation (example calculation is in section 1 above)  
TA = Ambient Temperature  
In order to calculate junction temperature, the appropriate junction-to-ambient thermal resistance θJA must be used. Assuming a  
moderate air flow of 200 linear feet per minute and a multi-layer board, the appropriate value is 66.6°C/W per Table 6 below.  
Therefore, Tj for an ambient temperature of 85°C with all outputs switching is:  
85°C + 0.391W * 66.6°C/W = 111°C. This is below the limit of 125°C.  
This calculation is only an example. Tj will obviously vary depending on the number of loaded outputs, supply voltage, air flow,  
TABLE 6. THERMAL RESISTANCE θJA FOR 20-PIN TSSOP, FORCED CONVECTION  
θ
JA by Velocity (Linear Feet per Minute)  
0
200  
98.0°C/W  
66.6°C/W  
500  
88.0°C/W  
63.5°C/W  
Single-Layer PCB, JEDEC Standard Test Boards  
Multi-Layer PCB, JEDEC Standard Test Boards  
114.5°C/W  
73.2°C/W  
NOTE: Most modern PCB designs use multi-layered boards.The data in the second row pertains to most designs.  
ICS85214AGI REVISION B MAY 6, 2011  
10  
©2011 Integrated Device Technology, Inc.  
ICS85214I Data Sheet  
LOW SKEW, 1-TO-5, DIFFERENTIAL-TO-HSTL FANOUT BUFFER  
3. Calculations and Equations.  
The purpose of this section is to derive the power dissipated into the load.  
HSTL output driver circuit and termination are shown in Figure 5.  
VDDO  
Q1  
VOUT  
RL  
50Ω  
FIGURE 5. HSTL DRIVER CIRCUIT AND TERMINATION  
To calculate worst case power dissipation into the load, use the following equations which assume a 50Ω load.  
Pd_H is power dissipation when the output drives high.  
Pd_L is the power dissipation when the output drives low.  
Pd_H = (V  
Pd_L = (V  
/R ) * (V  
- V  
)
OH_MIN  
L
DDO_MAX  
DDO_MAX  
OH_MIN  
/R ) * (V  
- V  
)
OL_MAX  
L
OL_MAX  
Pd_H = (1.0V/50Ω) * (2V - 1.0V) = 20mW  
Pd_L = (0.4V/50Ω) * (2V - 0.4V) = 12.8mW  
Total Power Dissipation per output pair = Pd_H + Pd_L = 32.8mW  
ICS85214AGI REVISION B MAY 6, 2011  
11  
©2011 Integrated Device Technology, Inc.  
ICS85214I Data Sheet  
LOW SKEW, 1-TO-5, DIFFERENTIAL-TO-HSTL FANOUT BUFFER  
RELIABILITY INFORMATION  
TABLE 7. θJAVS. AIR FLOW TABLE FOR 20 LEAD TSSOP  
θ
JA by Velocity (Linear Feet per Minute)  
0
200  
98.0°C/W  
66.6°C/W  
500  
88.0°C/W  
63.5°C/W  
Single-Layer PCB, JEDEC Standard Test Boards  
Multi-Layer PCB, JEDEC Standard Test Boards  
114.5°C/W  
73.2°C/W  
NOTE: Most modern PCB designs use multi-layered boards.The data in the second row pertains to most designs.  
TRANSISTOR COUNT  
The transistor count for ICS85214I is: 674  
ICS85214AGI REVISION B MAY 6, 2011  
12  
©2011 Integrated Device Technology, Inc.  
ICS85214I Data Sheet  
LOW SKEW, 1-TO-5, DIFFERENTIAL-TO-HSTL FANOUT BUFFER  
PACKAGE OUTLINE - G SUFFIX FOR 20 LEADTSSOP  
TABLE 8. PACKAGE DIMENSIONS  
Millimeters  
SYMBOL  
Minimum  
Maximum  
N
A
20  
--  
1.20  
0.15  
1.05  
0.30  
0.20  
6.60  
A1  
A2  
b
0.05  
0.80  
0.19  
0.09  
6.40  
c
D
E
6.40 BASIC  
0.65 BASIC  
E1  
e
4.30  
4.50  
L
0.45  
0°  
0.75  
8°  
α
aaa  
--  
0.10  
Reference Document: JEDEC Publication 95, MO-153  
ICS85214AGI REVISION B MAY 6, 2011  
13  
©2011 Integrated Device Technology, Inc.  
ICS85214I Data Sheet  
LOW SKEW, 1-TO-5, DIFFERENTIAL-TO-HSTL FANOUT BUFFER  
TABLE 9.ORDERING INFORMATION  
Part/Order Number  
85214AGI  
Marking  
Package  
Shipping Packaging  
tube  
Temperature  
-40°C to 85°C  
-40°C to 85°C  
-40°C to 85°C  
-40°C to 85°C  
ICS85214AGI  
ICS85214AGI  
20 lead TSSOP  
85214AGIT  
20 Lead TSSOP  
2500 tape & reel  
tube  
85214AGILF  
ICS85214AGIL  
ICS85214AGIL  
20 Lead "Lead-Free" TSSOP  
20 Lead "Lead-Free" TSSOP  
85214AGILFT  
2500 tape & reel  
NOTE: Parts that are ordered with an "LF" suffix to the part number are the Pb-Free configuration and are RoHS  
compliant.  
While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology, Inc.(IDT) assumes no responsibility for either its use or for infringement of any patents or  
other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial and industrial applications. Any other applications  
such as those requiring high reliability, or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications  
without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments.  
ICS85214AGI REVISION B MAY 6, 2011  
14  
©2011 Integrated Device Technology, Inc.  
ICS85214I Data Sheet  
LOW SKEW, 1-TO-5, DIFFERENTIAL-TO-HSTL FANOUT BUFFER  
REVISION HISTORY SHEET  
Rev  
Table  
Page  
Description of Change  
Date  
A
T9  
14  
Added Lead-Free marking in Ordering Information table.  
6/1/05  
Updated datasheet's header/footer with IDT from ICS.  
Removed ICS prefix from Part/Order Number column.  
Added Contact Page.  
B
T9  
15  
16  
7/25/10  
4 - 5  
AC/DC Characteristics Tables - corrected temperature in table headings from 0°C to  
-40°C.  
T5  
T9  
5
7
14  
AC Characteristics Table - Added thermal note.  
Updated Wiring the differential Input to Accept Single Ended Levels application note.  
Ordering Information Table - Part/Order Number column, added suffix "T" in the order  
number for table and reel.  
B
5/6/11  
Updated header and footer of the document.  
ICS85214AGI REVISION B MAY 6, 2011  
15  
©2011 Integrated Device Technology, Inc.  
ICS85214I Data Sheet  
LOW SKEW, 1-TO-5, DIFFERENTIAL-TO-HSTL FANOUT BUFFER  
We’ve Got Your Timing Solution.  
6024 Silver Creek Valley Road  
San Jose, CA 95138  
Sales  
Tech Support  
netcom@idt.com  
800-345-7015 (inside USA)  
+408-284-8200 (outside USA) +480-763-2056  
Fax: 408-284-2775  
www.IDT.com/go/contactIDT  
© 2011 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT, the IDT logo, ICS and HiPerClockS are  
trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and  
marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners.  
Printed in USA  

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