ML4642CQ Просмотр технического описания (PDF) - Micro Linear Corporation
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ML4642CQ Datasheet PDF : 15 Pages
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AC ELECTRICAL CHARACTERISTICS
SYMBOLS
PARAMETER
TRANSMIT
tTXNPW
tTXFPW
tXODY
tTXLP
tTXSDY
tTXJ
RECEIVE
Transmit Turn-On Pulse Width
Transmit Turn-Off Pulse Width
Transmitter Turn-On Delay
Transmit Loopback Startup Delay
Transmit Steady State Prop. Delay
Transmitter Jitter
tRXODY
tRXSDY
tRXJ
tAR
Receive Turn-On Delay
Receive Steady State Prop. Delay
Receiver Jitter
Differential Output Rise Time
20% to 80% (Rx+/–, COL+/–)
tAF
Differential Output Fall Time
20% to 80% (Rx+/–, COL+/–)
COLLISION
tCPSQE
Collision Present to SQE Assert
tSQEXR
Time for SQE to Deactivate after a collision
tCLF
Collision Frequency
tCLPDC
Collision Pulse Duty Cycle
tSQEDY
SQE Test Delay (Tx Inactive to SQE)
tSQETD
SQE Test Duration
tSQEB
SQE Blank Period
JABBER, LINK TEST AND LED TIMING
tJAD
tJRT
tJSQE
Jabber Activation Delay
Jabber Reset Unjab Time
Delay from Outputs Disabled to
Collision Oscillator On
tLEDT
CDLED, RxLED, TxLED1, TxLED2 On Time
ML4642
MIN
TYP.
MAX
UNITS
20
ns
180
ns
30
ns
40
ns
15
ns
1
ns
20
ns
15
ns
1
ns
3
ns
3
ns
0
200
ns
100
900
ns
8.5
10
11.5
MHz
40
50
60
%
0.6
1.1
1.6
µs
0.5
1.0
1.5
µs
4
7
µsec
7
13.5
20
ms
250
450
750
ms
100
ns
20
50
300
ms
5
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