ML4667 Просмотр технического описания (PDF) - Micro Linear Corporation
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ML4667 Datasheet PDF : 12 Pages
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AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
TRANSMIT
FTXIDF
PTXDC
tTXNPW
tTXODY
tTXLP
tTXFPW
tTXSOI
tTXSDY
tTXJ
RECEIVE
Transmit Idle Frequency
Transmit Idle Duty Cycle
Transmit Turn-On Pulse Width
Transmit Turn-On Delay
Transmit loopback Start up Delay
Transmit Turn Off Pulse Width
Transmit Start of Idle
Transmit Steady State Propagation Delay
Transmit Jitter into 31Ω Load
FRXSFT
tRXODY
tRXFX
tRXSDY
tRXJ
tAR
tAF
COLLISION
Receive Squelch Frequency Threshold
Receive Turn-On Delay
Last Bit Received to Slow Decay Output
Receive Steady State Propagation Delay
Receive Jitter
Differential Output Rise Time 20% to 80% (Rx±, COL±)
Differential Output Fall Time 20% to 80% (Rx±, COL±)
tCPSQE
Collision Present to SQE Assert
tSQEXR
Time for SQE to Deactivate After Collision
FCLF
Collision Frequency
PCLPDC
Collision Pulse Duty Cycle
tSQEDY
SQE Test Delay (Tx Inactive to SQE)
tSQETD
SQE Test Duration
JABBER AND LED TIMING
tJAD
tJRT
tJSQE
tLED
tLLPH
tLLCL
Jabber Activation Delay
Jabber Reset Unjab Time
Delay from Outputs Disabled to Collision Oscillator On
RCV, CLSN, XMT On Time
Low Light Present to LMON High
Low Light Present to LMON Low
Note 1:
Note 2:
Note 3:
Note 4:
Limits are guaranteed by 100% testing, sampling, or correlation with worst-case test conditions.
This does not include the current from the AUI pull-down resistors, or LED status outputs.
LED drivers can sink up to 20mA, but VOL will be higher.
Does not include prebias current for fiber optic LED which would typically be 3mA.
ML4667
MIN
TYP
MAX
UNITS
0.85
1.25
MHz
45
55
%
20
ns
200
ns
500
ns
180
ns
400
2100
ns
15
50
ns
±1.5
ns
2.51
4.5
MHz
270
ns
230
300
ns
15
50
ns
±1.5
ns
4
ns
4
ns
0
350
ns
0
700
ns
8.5
11.5
MHz
40
50
60
%
0.6
1.6
µs
0.5
1.0
1.5
µs
20
70
150
ms
250
450
750
ms
100
ns
8
16
32
ms
3
5
10
µs
250
750
ms
5
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