NE8392C 查看數據表（PDF） - Philips Electronics

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NE8392C

Coaxial transceiver interface for Ethernet/Thin Ethernet

Philips Electronics 

Philips Semiconductors

Coaxial transceiver interface for Ethernet/Thin Ethernet

Product specification

NE8392C

ELECTRICAL CHARACTERISTICS

VEE = –9V +5%; TA = 0°C to +70°C unless otherwise specified1,2. No external isolation

SYMBOL

PARAMETER

LIMITS

TEST CONDITIONS

UNIT

MIN

TYP

MAX

VPOR

IEE

Power–on reset voltage. Transmitter disabled

for |VEE| < |VPOR|

Supply current non–transmitting

Supply current transmitting

–6.5

–80

–125

V

–130

mA

–180

IRXI

ICDS

Receive input bias current

Cable sense input bias current

VRXI = 0V

VCDS = 0V

–2

+25

µA

+2

+6

µA

VIH

HBE input HIGH voltage

VEE +1.4

V

VIL

IIH

IIL

ITDC

ITAC

ITX10

VTCOM

VCD

HBE input LOW voltage

HBE input HIGH current

HBE input LOW current

Transmit output DC current level3

Transmit output AC current level3

Transmit current

Transmitter output voltage compliance4

Collision threshold5

VHBE = 0V

VHBE = VEE

VTXO = –10V

–37

±28

–250

Measured by applying

DC voltage at RXI

–1450

250

–500

–41

VEE +0.4

V

500

µA

–1000

µA

–45

mA

±ITDC

mA

+250

µA

–3.7

V

–1530

–1580

mV

VOD

Differential output voltage – non idle at RX+ and

CD+6

±600

±1200

mV

VOB

Differential output voltage imbalance – idle at

RX+ and CD+7

+40

mV

VOC

VRS

VTS

RRXI

CRXI

RTXO

Output common mode voltage at RX± and CD±

Receiver squelch threshold

Transmitter squelch threshold

Shunt resistance at RXI non–transmitting

Input capacitance at RXI

Shunt resistance at TXO transmitting

VRXI average DC

(VTX+ – VTX–) peak

–1.5

–130

–175

100

–2

–250

–225

2

10

–2.5

V

–370

mV

–300

mV

kΩ

pF

kΩ

NOTES:

1. Currents flowing into device pins are positive. All voltages are referenced to ground unless otherwise specified. For ease of interpretation,

the parameter limit that appears in the MAX column is the largest value of the parameter, irrespective of sign. Similarly, the value in the MIN

column is the smallest value of the parameter, irrespective of sign.

2. All typicals are for VEE = –9V and TA = 27°C.

3. ITDC is measured as (VMAX + VMIN)/(2 x 25) where VMAX and VMIN are the max and min voltages at TXO with a 25Ω load between TXO and

GND. ITAC is measured as (VMAX – VMIN)/(2 x 25).

4. The TXO pin shall continue to sink at least ITDC min when the idle (no signal) voltage on this pin is –3.7V.

5. Collision threshold for an AC signal is within 10% of VCD.

6. Measured on secondary side of isolation transformer (see Connection Diagram, Figure 1). The transformer has a 1:1 turns ratio with an

inductance between 30 and 100µH at 5MHz.

7. Measured as the voltage difference between the RX pins or the CD pins with the transformer removed.

1995 May 1

4

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