ML4658
ELECTRICAL CHARACTERISTICS (Continued)
AC ELECTRICAL CHARACTERISTICS
SYMBOL
Transmit
PARAMETER
MIN
TYP
MAX
UNITS
tTXNPW
tTXFPW
tTXLP
Transmit Turn-On Pulse Width
20
ns
ns
ns
ns
ns
ns
Transmit Turn-Off Pulse Width
Transmit Loopback Startup Delay
Tranmitter Turn-On Delay
Transmit Steady State Prop. Delay
TransmitterJitter
180
200
200
100
±3.5
tTXODY
tTXSDY
tTXJ
15
±2
Receive
tRXODY
tRXTDY
tRXFX
Receive Turn-On Delay if Transmit is Idle
Receive Turn-On Delay if Tranmit is Active
Last Bit Received to Start Slow Decay Output
Receive Steady State Prop. Delay
420
650
800
15
500
800
ns
ns
ns
ns
ns
ns
ns
230
tRXSDY
tRXJ
100
ReceiverJitter
±0.7
3
±1.5
tAR
Differential Output Rise Time 20% to 80% (Rx±, COL±)
Differential Output Fall Time 20% to 80% (Rx±, COL±)
tAF
3
Collision
tCPSQE
tTXRX
Collision Present to SQE Assert
0
0
0
900
900
900
ns
ns
ns
Time for Loopback to swtich from Tx to RxTP
during a collision
tSQEXR
tSQEXT
Time for SQE to deactivate given that RxTP goes idle and
TxTP continues
Time for SQE to deactivate given that TxTP goes idle
and RxTP continues
0
900
11.5
60
ns
MHz
%
tCLF
Collision Frequency
8.5
40
10
50
tCLPDC
tSQEDY
tSQETD
Collision Pulse Duty Cycle
SQE Test Delay (Tx Inactive to SQE)
SQE Test Duration
0.6
0.5
1.1
1.0
1.6
µs
1.5
µs
Jabber, Link Test and LED Timing
tJAD
Jabber Activation Delay
20
70
450
100
95
150
750
ms
ms
ns
tJRT
Jabber Reset Unjab Time
250
tJSQE
tLLT
Delay from Outputs Disabled to Collision Oscillator On
Link Loss Time
50
2
150
7
ms
ms
ms
ms
ns
tLTN
tLTX
tTLP
Link Test Pulse Receive Minimum Time
Link Test Pulse Receive Maximum Time
Link Test Pulse Repetition Rate
Link Test Pulse Width
4.2
70
25
8
150
24
16
tLTPW
tLEDT
85
30
100
100
200
300
XMT, RCV, CLSN On Time
ms
5
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
