HFBR-4663 Просмотр технического описания (PDF) - HP => Agilent Technologies

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HFBR-4663

Single Chip 10BASE-FL Transceiver

HP => Agilent Technologies 

AC Electrical Characteristics

Symbol

Parameter

Transmit

tTXNPW

tTXFPW

tTXLP

tTXODY

tTXIDF

tTXDC

tTXSDY

tTXJ

Receive

Transmit Turn-On Pulse Width

Transmit Turn-Off Pulse Width from Data to Idle

Transmit Loopback Start-up Delay

Transmit Turn-On Delay

Transmit Idle Frequency

Transmit Idle Duty Cycle

Transmit Steady State Propagation delay

Transmit Jitter into 31 Ω Load

tRXSFT

tRXODY

tRXFX

tRXSDY

tRXJ

tAR

tAF

Collision

Receive Squelch Frequency Threshold

Receive Turn-On Delay

Last Bit Received to Slow Decay Output

Receive Steady State Propagation Delay

Receive Jitter

Differential Output Rise Time 20% to 80% (Rx± , COL± )

Differential Output Fall Time 20% to 80% (Rx± , COL± )

tCPSQE

Collision Present to SQE Assert

tSQEXR

Time for SQE to Deactivate After Collision

tCLF

Collision Frequency

tCLPDC

Collision Pulse Duty Cycle

tSQEDY

SQE Test Delay (Tx Inactive to SQE)

tSQETD

SQE Test Duration

Jabber and LED Timing

tJAD

` tJRT

tJSQE

tLED

tLLPH

tLLCL

Jabber Activation Delay

Jabber Reset Unjab Time

Delay from Outputs Disabled to Collision Oscillator On

RCV, CLSN, XMT On Time

Low Light Present to LMON High

Low Light Present to LMON Low

Min.

400

0.85

45

2.51

230

0

0

8.5

40

0.6

0.5

20

250

8

3

250

Typ. Max. Units

20

ns

2100 ns

500 ns

100 ns

1.25 MHz

55 %

15

50 ns

± 1.5 ns

4.5 MHz

270 ns

300

ns

15

50 ns

± 1.5 ns

4

ns

4

ns

350 ns

700 ns

11.5 MHz

50

60 %

1.6 µs

1.0 1.5 µs

70 150 ms

450 750 ms

100

ns

16

32 ms

5

10 µs

750 ms

Notes:

1. Absolute maximum ratings are limits beyond which the life of the integrated circuit may be impaired. All voltages unless otherwise

specified are measured with respect to ground.

2. Limits are guaranteed by 100% testing, sampling, or correlation with worst-case test conditions.

3. Low Duty Cycle pulse testing is performed at TA.

4. This does not include the current from the AUI pull-down resistors, or LED status otuputs.

5. LED drivers can sink up to 20 mA, but VOL will be higher.

6. Does not include pre-bias current for fiber optic LED which would typically be 3 mA.

7. Threshold for switching from Link Fail ot Link Pass (Low Light).

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