MTD392 View Datasheet(PDF) - Myson Century Inc
Part Name
Description
Manufacturer
MTD392 Datasheet PDF : 10 Pages
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MYSON
TECHNOLOGY
MTD392
FAMILY
receiving operation. During transmission, the detection
threshold is increased to -0.42V plus its own transmission
level on the CDS pin. When TST- is connected to VEE and
MOD- is connected to GND, MTDX94 uses the transmit-
hybrid mode for collision detection. This mode is identical to
hybrid-mode, except that during idle or receiving operation,
the detection threshold is set at -1.53V. For proper operation
of hybrid and transmission-hybrid mode, a 400 W resistor
should be connected between the CDS pin and GND. This pin
has a 50 kW internal pull-up resistor.
3.0 ABSOLUTE MAXIMUM RATINGS
DC Supply Voltage (VEE)
Input Voltage
Storage Temperature
Ambient Operating Temperature
ESD Protection except RXI
-12V
GND+0.3 to VEE-0.3V
-65o to 150oC
0o to 70oC
2000V
4.0 OPERATING CONDITIONS
DC Supply Voltage (VEE)
Operating Temperature
8.55-9.45V
0o to 70oC
5.0 ELECTRICAL CHARACTERISTICS (under operating conditions) (Note 1)
Parameter
Symbol Min Typ Max Unit
Recommended Supply Voltage
VEE -8.55 -9.0 -9.45
V
Non-transmitting Supply Current (VEE to GND)
IEE
-
-25
-35
mA
Transmission
-
-70
-80
mA
Receiving Input Bias Current (RXI)
Irxi
-2
-
+25
mA
Transmitting Output DC Current (TXO)
Itdc
37
41
45
mA
Transmitting Output AC Current (TXO)
Itac
±28
-
Itdc
mA
Collision Threshold (Receiving Mode)
Vcd
-1.45 -1.53 -1.62
V
Collision Threshold (Hybrid Mode) (MTDX94 only)
Vhcd -0.38 -0.45 -0.52
V
Carrier Sense Threshold (RXI)
Vcs
-0.38 -0.45 -0.52
V
Differential Output Voltage (RX±,CD±)
Vod
±500
-
±1500 mV
DC Common Mode Output Voltage (RX±,CD±) (Note2) Voc
-1.0 -2.0 -3.0
V
Idle State Differential Offset Voltage(RX±,CD±)
Vob
-
0
±40
mV
Transmission Squelch Threshold(TX±) (Note 3)
Vts
-175 -225 -300
mV
Input Capacitance (RXI)
Cx
-
1.5
-
pF
Shunt Resistance-Non-transmitting
Rrxi
100
-
-
kW
Shunt Resistance-Transmitting
Rtxo
10
-
-
kW
Notes:1. Testing is done under the testing load defined in Figure 6.
2. During idle condition, Voc is pulled down to VEE to minimize the power dissipation across the load
resistors connected to RX± and CD±pins.
3. For a minimum pulse width of ³40 ns.
MTD392 Revision 2.01 02/25/1997
6/10
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