ml4644 Microsemi Corporation, ml4644 Datasheet - Page 5

• Manufacturer Part Number: ml4644
• Description: Port Multiplexer
• Manufacturer: Microsemi Corporation

AC ELECTRICAL CHARACTERISTICS
TRANSMIT
RECEIVE
COLLISION
JABBER, LINK TEST AND LED TIMING
SYMBOLS
t
t
t
t
t
t
t
t
t
t
t
t
F
F
t
t
t
t
t
XODY
TXSDY
TXFPW
TXSOI
RXODY
RXSDY
RXFPW
RXSOI
AR
AF
CPSQE
SQEXR
SQEDY
SQETD
JAD
JSQE
LEDT
CLF
JAM
Transmitter Turn-On Delay
Transmit Steady State Prop. Delay
Transmit Turn-Off Pulse Width
Transmit Turn-Off Start of Idle
Receive Turn-On Delay
Receive Steady State Prop. Delay
Receive Turn-Off Pulse Width
Receive Turn-Off Start of Idle
Differential Output Rise Time
20% to 80% (Rx±, COL±, TxOUT±)
Differential Output Fall Time
20% to 80% (Rx±, COL±, TxOUT±)
Collision Present to SQE Assert
Time for SQE to Deactivate After a Collision
Collision Frequency
Collision Pulse Duty Cycle
JAM Frequency at TxOUT±
SQE Test Delay (Tx Inactive to SQE)
SQE Test Duration
Jabber Activation Delay
Delay from Outputs Disabled to Collision Oscillator On
REC, COLL, Tx1, Tx2, Tx3, Tx4 On Time
PARAMETER
XTAL Controlled
XTAL Controlled
XTAL Controlled
MIN
200
200
8.5
0.6
0.5
0.3
40
0
0
7
TYP.
13.5
100
180
250
100
180
250
100
1.0
1.0
1.1
15
15
10
50
3
3
5
MAX
11.5
200
200
200
500
1.5
3.0
1.6
60
20
ML4644
UNITS
MHz
MHz
ms
ms
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
µs
ns
5