78Q8392L 查看數據表（PDF） - TDK Corporation

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78Q8392L

Low Power Ethernet Coaxial Transceiver

TDK Corporation 

78Q8392L

Low Power Ethernet

Coaxial Transceiver

DC OPERATING CHARACTERISTICS (continued)

NOTES

1. Currents into device pins are positive, currents

out of device pins are negative. If not

specified, voltages are referenced to ground.

2. All typicals are for VEE = -9V, Ta = 25°C.

3. -8.55V > VEE > -9.45V.

4. The voltage on TXO is -4V < V(TXO) < 0.0V.

5. The AC current measurement is referenced to

the DC current level.

6. Operating or idle state.

7. Test load as shown in Figure 2.

8. Device measurement taken in idle state.

9. This threshold can be determined by

monitoring the CD± output with a DC level in

RXI.

GND

RX+

or

CD+

ETHERNET

XCVR

RX-

or

CD-

+

VOC

-

510Ω ±5%

VEE

50 µH ±1%

78 ±1%

+

VOB

-

510Ω ±5%

VEE

FIGURE 2: Test Load for CD± or RX±

+

VOD = VCOM

-

6

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