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DP83251V Datasheet(PDF) 79 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # DP83251V
Description  PLAYER Device (FDDI Physical Layer Controller)
PDF  96 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83251V Datasheet(HTML) 79 Page - National Semiconductor (TI)

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70 Electrical Characteristics (Continued)
DC electrical characteristics for all Open Drain output signals (INT ACK and CR)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VOL
Output Low Voltage
IOL e 8 mA
05
V
IOZ
TRI-STATE Leakage
VOUT e VCC
10
m
A
DC electrical characteristics for all 100k ECL input and output signals
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VOH
Output High Voltage
VIN e VIH (max)
VCC b 1025
VCC b 0880
V
VOL
Output Low Voltage
VIN e VIL(min)
VCC b 1810
VCC b 1620
V
VIH
Input High Voltage
VCC b 1165
VCC b 0880
V
VIL
Input Low Voltage
VCC b 1810
VCC b 1475
V
IL
Input Low Current
VIN e GND
b
10
m
A
IH
Input High Current
VIN e VCC
100
m
A
Supply Current electrical characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Units
ICC
Total Supply
LBC e 125 MHz
440
mA
Current
TXC e 125 MHz
Note
The PLAYER device has two pairs of differential ECL outputs therefore 60 mA of the total supply current is actually consumed by external termination
resistors and the maximum current consumed by the PLAYER device alone is only 380 mA The ECL termination current is calculated as follows
VOH max e VCC b 088V
VOL max e VCC b 162V
Since the outputs are differential the average output level is VCC b 125V The test load per output is 50X at VCC b 2V therefore the external load current
through the 50X resistor is
ILOAD e (VCC b 125) b (VCC b 2) 50
e
0015A
e
15 mA
As result two pairs of ECL outputs consume 60 mA
79



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