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LAN8741Ai-EN датащи(PDF) 87 Page - Microchip Technology

номер детали LAN8741Ai-EN
подробное описание детали  Small Footprint MII/RMII 10/100 Energy Efficient Ethernet Transceiver with HP Auto-MDIX and flexPWR짰 Technology
PDF  106 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN8741Ai-EN датащи(HTML) 87 Page - Microchip Technology

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2013-2015 Microchip Technology Inc.
DS00001988A-page 87
LAN8741A/LAN8741Ai
Note 1: Measured at line side of transformer, line replaced by 100 Ω (±1%) resistor.
2: Offset from 16 ns pulse width at 50% of pulse peak.
3: Measured differentially.
Note 1: Min/max voltages guaranteed as measured with 100 Ω resistive load.
5.6
AC Specifications
This section details the various AC timing specifications of the device.
5.6.1
EQUIVALENT TEST LOAD
Output timing specifications assume a 25 pF equivalent test load, unless otherwise noted, as illustrated in Figure 5-1
below.
TABLE 5-6:
100BASE-TX TRANSCEIVER CHARACTERISTICS
Parameter
Symbol
Min.
Typ.
Max.
Unit
Note
Peak Differential Output Voltage High
VPPH
950
-
1050
mVpk
(see Note 1)
Peak Differential Output Voltage Low
VPPL
-950
-
-1050
mVpk
(see Note 1)
Signal Amplitude Symmetry
VSS
98
-
102
%
(see Note 1)
Signal Rise and Fall Time
TRF
3.0
-
5.0
ns
(see Note 1)
Rise and Fall Symmetry
TRFS
-
-
0.5
ns
(see Note 1)
Duty Cycle Distortion
DCD
35
50
65
%
(see Note 2)
Overshoot and Undershoot
VOS
--
5
%
Jitter
1.4
ns
(see Note 3)
TABLE 5-7:
10BASE-T TRANSCEIVER CHARACTERISTICS
Parameter
Symbol
Min.
Typ.
Max.
Unit
Note
Transmitter Peak Differential Output Voltage
VOUT
2.2
2.5
2.8
V
(see Note 1)
Receiver Differential Squelch Threshold
VDS
300
420
585
mV
FIGURE 5-1:
OUTPUT EQUIVALENT TEST LOAD
25 pF
OUTPUT



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