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LTM2883 Datasheet(PDF) 9 Page - Analog Devices

Part # LTM2883
Description  Isolated USB Data Transceiver
PDF  18 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTM2883 Datasheet(HTML) 9 Page - Analog Devices

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LTM2894
9
Rev A
For more information www.analog.com
TEST CIRCUITS
Figure 2. Low Speed Timing Measurements
Figure 3. Full Speed Timing Measurements
2894 F02
0V
3.3V
0V
3.3V
D1+ OR D2+
D2+ OR D1+
CL
D1– OR D2–
D2– OR D1–
CL
1.5k
3.6V
tLR
tLPRR
tLPFF
tLF
10%
10%
90%
90%
D2+ OR D1+
D2– OR D1–
D1+ OR D2+
D1– OR D2–
+
+
2894 F03
0V
3.3V
0V
3.3V
D1+ OR D2+
D2+ OR D1+
CL
D1– OR D2–
D2– OR D1–
CL
tFR
tFPFF
tFPRR
tFF
10%
10%
90%
90%
D2– OR D1–
D2+ OR D1+
D1– OR D2–
D1+ OR D2+
+
+
FUNCTIONAL TABLE
USB Transceiver Functional Table
Mode
D1+
D1–
Pull-Up Connection
D2+
D2–
Full Speed (Idle)
1.5kΩ Pull-Up
Host Pull-Down
D1+
Peripheral Pull-Up
15kΩ Pull-Down
Low Speed (Idle)
Host Pull-Down
1.5kΩ Pull-Up
D1–
15kΩ Pull-Down
Peripheral Pull-Up
Disconnected (Idle)
Host Pull-Down
Host Pull-Down
None
15kΩ Pull-Down
15kΩ Pull-Down
Suspend (Idle > 3ms)
Set During Idle Time
Set During Idle Time
Set During Idle Time
Peripheral or 15kΩ
Peripheral or 15kΩ
D1 to D2 data
IN+
IN–
Set During Idle Time
OUT+
OUT–
D2 to D1 data
OUT+
OUT–
Set During Idle Time
IN+
IN–



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