MTD492 View Datasheet(PDF) - Myson Century Inc
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MTD492 Datasheet PDF : 8 Pages
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MYSON
TECHNOLOGY
MTD492
5.0 ELECTRICAL CHARACTERISTICS (under operating conditions) (Note 1)
OPERATING CONDITIONS
DC Supply Voltage (VEE)
Operating Temperature
8.55-9.45V
0o to 70oC
Parameter
Recommended Supply Voltage
Supply Current (all VEE pins) Non-transmission
Transmission
Receiver Input Bias Current (RXI)
Transmission Output DC Current (TXO)
Transmission Output AC Current (TXO)
Collision Threshold (Reception Mode)
Carrier Sense Threshold (RXI)
Differential Output Voltage (RX+,CD+)
DC Common Mode Output Voltage (RX+)
DC Common Mode Output Voltage (CD+) (Note 2)
Idle State Differential Offset Voltage(RX+,CD+)
Transmission Squelch Threshold(TX+) (Note 3)
Input Capacitance (RXI)
Shunt Resistance - Non-transmission
Shunt Resistance - Transmission
Symbol Min Typ Max Unit
VEE -8.55 -9.0 -9.45
V
IEEidle
-
-25
-35
mA
IEExmt
-
-70
-80
mA
Irxi
-2
-
+25
µA
Itdc
37
41
45
mA
Itac
+28
-
Itdc
mA
Vcd -1.45 -1.53 -1.62
V
Vcs -0.38 -0.45 -0.52
V
Vod +500 - +1500 mV
Vocrx -1.0 -2.0 -3.0
V
Voccd VEE VEE VEE
V
Vob
-
0
+40
mV
Vts
-175 -225 -300 mV
Cx
-
1.5
-
pF
Rrxi
100
-
-
kΩ
Rtxo
10
-
-
kΩ
Notes: 1. Testing is done under the testing load defined in Figure 6.
2. During an idle condition, Voc is pulled down to VEE to minimize the power dissipation across the
load resistors connected to CD+pins.
3. Tested under continuous 5MHz waveform that represents the preamble.
6.0 SWITCHING CHARACTERISTICS (under operating conditions) (Note 1)
Parameter
Symbol Min Typ Max Unit
Reception Start-up Delay (RXI to RX+)
Tron
-
2.5
5
bits
Reception Propagation Delay (RXI to RX+)
Trd
-
35 50
ns
Differential Output Rise Time (RX+,CD+)
Trr
-
4
7
ns
Differential Output Fall Time (RX+,CD+)
Trf
-
4
7
ns
Receiver and Cable Total Jitter
Trj
-
+2
-
ns
Transmission Start-up Delay
Ttst
-
1
2
bits
Transmission Propagation Delay
Ttd
-
25 50
ns
Transmission Rise Time (10%-90%) (TXO)
Ttr
20 25
30
ns
Transmission Fall Time (10%-90%) (TXO)
Ttf
20 25
30
ns
Ttr and Trf Mismatch
Ttm
- +0.5 +3.0 ns
Transmission Skew(TXO)
Tts
- +0.5 +2
ns
Transmission Turn-on Pulse Width at Vts(TX+) (Note 4) Tton
10 20
40
ns
Transmission Turn-off Delay
Ttoff 130 200 260 ns
Transmission IDL Detection Time (Note 5)
Ttidl 130 170 200 ns
Collision Turn-on Delay
Tcon
-
7
13 bits
Collision Turn-off Delay
Tcoff
-
-
20 bits
MTD492 Revision 3.5 01/07/1997
6/8
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