參數(shù)資料
型號(hào)： TSB81BA3I
廠商： Texas Instruments, Inc.
英文描述： IEEE 1394b THREE-PORT CABLE TRANSCEIVER/ARBITER
中文描述： 的IEEE 1394b三端口電纜收發(fā)器/仲裁者
文件頁(yè)數(shù)： 10/57頁(yè)
文件大小： 810K
代理商： TSB81BA3I
SLLS559B DECEMBER 2002 REVISED OCTOBER 2003
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Terminal Functions (Continued)
TERMINAL
I/O
DESCRIPTION
NAME
TPA2
TPA2+
TPB2
TPB2+
TYPE
Cable
NO.
58
59
55
56
I/O
Port 2 twisted-pair differential-signal terminals. Board traces from each pair of positive and negative
differential signal terminals must be kept matched and as short as possible to the external load
resistors and to the cable connector. Please request the S800 1394b layout recommendations
document from your TI representative.
TPBIAS0
TPBIAS1
TPBIAS2
Cable
47
54
60
I/O
Twisted-pair bias output. This provides the 1.86-V nominal bias voltage needed for proper operation of
the twisted-pair cable drivers and receivers, and for signaling to the remote nodes that there is an active
cable connection in 1394a2000 mode. Each of these terminals, except for an unused port, must be
decoupled with a 1.0-
μ
F capacitor to ground. For the unused port, this terminal can be left
unconnected. Please request the S800 1394b layout recommendations document from your TI
representative.
XI
Osc In
27
Oscillator input. This terminal connects to a 98.304-MHz low jitter external oscillator. The XI terminal is
a 1.8-V CMOS input.
Oscillator jitter must be 5 ps RMS or better.
If only 3.3-V oscillators can be acquired, then great care must be taken to not introduce significant jitter
by the means used to level shift from 3.3 V to 1.8 V. If a resistor divider is used, then a high current
oscillator and low-value resistors must be used to minimize RC time constants. If a level-shifting circuit
is used, then it must introduce very little jitter. Please see layout recommendations document.
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Supply voltage range, V
DD
(see Note 1)
Input voltage range, V
I
(see Note 1)
Output voltage range at any output, V
O
Continuous total power dissipation
Operating free air temperature, T
A
: TSB81BA3
0.3 V to 4 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TSB81BA3I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0.5 V to V
DD
+ 0.5 V
0.5 V to V
DD
+ 0.5 V
See Dissipation Rating Table
0
°
C to 70
°
C
40
°
C to 85
°
C
65
°
C to 150
°
C
Storage temperature range, T
stg
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
260
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values, except differential I/O bus voltages, are with respect to network ground.
DISSIPATION RATING TABLE
DERATING FACTOR
ABOVE TA = 25
°
C
52.5 mW/
°
C
31.7 mW/
°
C
20.3 mW/
°
C
PACKAGE
TA
≤
25
°
C
POWER RATING
TA = 70
°
C
POWER RATING
TA = 85
°
C
POWER RATING
PFP§
PFP
PFP#
5.05 W
2.69 W
1.9 W
3.05 W
1.62 W
1.15 W
2.01 W
1.1 W
792 mW
This is the inverse of the traditional junction-to-ambient thermal resistance (R
θ
JA).
§2 oz. trace and copper pad with solder.
2 oz. trace and copper pad without solder.
#For more information, refer to TI application note
PowerPAD
Thermally Enhanced Package,
(SLMA002).
PowerPAD is a trademark of Texas Instruments.
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TSB82AA2 制造商:TI 制造商全稱:Texas Instruments 功能描述:1394b OHCI-LYNX CONTROLLER
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