Datasheet

LAN9514/LAN9514I
DS00002306A-page 42  2009-2016 Microchip Technology Inc.
Note 4-6 This specification applies to all inputs and tri-stated bidirectional pins. Internal pull-down and pull-up
resistors add +/- 50 μA per-pin (typical).
Note 4-7 This is the total 5.5V input leakage for the entire device.
Note 4-8 XI can optionally be driven from a 25 MHz single-ended clock oscillator.
Note 4-9 Measured at line side of transformer, line replaced by 100Ω (+/- 1%) resistor.
Note 4-10 Offset from 16 nS pulse width at 50% of pulse peak.
Note 4-11 Measured differentially.
Note 4-12 Min/max voltages guaranteed as measured with 100 resistive load.
4.5 AC Specifications
This section details the various AC timing specifications of the LAN9514/LAN9514i.
ICLK Type Buffer (XI Input)
Low Input Level
High Input Level
V
ILI
V
IHI
-0.3
1.4
0.5
3.6
V
V
Note 4-8
TABLE 4-6: 100BASE-TX TRANSCEIVER CHARACTERISTICS
Parameter Symbol Min Typ Max Units Notes
Peak Differential Output Voltage High V
PPH
950 — 1050 mVpk Note 4-9
Peak Differential Output Voltage Low V
PPL
-950 — -1050 mVpk Note 4-9
Signal Amplitude Symmetry V
SS
98 — 102 % Note 4-9
Signal Rise and Fall Time T
RF
3.0 — 5.0 nS Note 4-9
Rise and Fall Symmetry T
RFS
——0.5nSNote 4-9
Duty Cycle Distortion D
CD
35 50 65 % Note 4-10
Overshoot and Undershoot V
OS
—— 5 % —
Jitter — — — 1.4 nS Note 4-11
TABLE 4-7: 10BASE-T TRANSCEIVER CHARACTERISTICS
Parameter Symbol Min Typ Max Units Notes
Transmitter Peak Differential Output Voltage V
OUT
2.2 2.5 2.8 V Note 4-12
Receiver Differential Squelch Threshold V
DS
300 420 585 mV —
TABLE 4-5: I/O BUFFER CHARACTERISTICS (CONTINUED)
Parameter Symbol Min Typ Max Units Notes