AMD

13

Am7996

SWITCHING CHARACTERISTICS over operating ranges unless otherwise specified

Parameter

No

Symbol

Parameter Description

Test Conditions

Min

Typ

Max

Unit

Receiver Specification

1

DO

± Input Pulse Width to Reject

(DO

(Note 1)

15

7

ns

2

DO

± Input Pulse Width to Turn On

(DO

(Note 1)

20

15

ns

3

DO

± Input Pulse Width to Stay On

(DO

(Note 1)

105

ns

4

DO

± Input Pulse Width to Turn Off

(DO

(Note 1)

160

ns

5

Transmit Driver Turn-On Delay

(Note 1)

200

ns

7

Transmit Static Delay (Zero Crossing

to 50% Point to Coax)

(Note 1)

30

50

ns

8

Transmit Driver Rise Time

(Notes 1, 7)

20

25

30

ns

9

Transmit Driver Fall Time

(Notes 1, 7)

20

25

30

ns

10

Difference in Driver Rise and Fall

(Notes 1, 7)

1.0

ns

11

Output Driver Skew—Transmit Data

Symmetry

(Note 1)

–2.0

+2.0

ns

12

Jabber Control Time

(Note 1)

20

26

35

ms

13

Jabber Reset Time

(Note 1)

340

419

500

ms

14

Jabber Recovery Time

(Note 1)

1.0

µs

Receive/Collision Specification

15

Receiver Turn-On Delay

250

500

ns

16

Receiver Turn-Off Delay

1000

ns

17

Receiver Static Delay

50% Point at RXT

at Zero Crossing

at DI

± Outputs

50

ns

18

Receive Data Symmetry

–2

+2

%

19

DI

± and CI± Rise Time

20%–80%,

Ω

7

ns

20

DI

± and CI± Fall Time

80%–20%,

Ω

7

ns

21

CI

± Turn-On Delay

900

ns

22

CI

± Turn-Off Delay

2000

ns

23

CI

± LOW Time

35

50

70.5

ns

24

CI

± HIGH Time

35

50

70.5

ns

25

Collision Frequency

(Note 8)

8.5

10.0

11.5

MHz

26

SQE Test Delay Time

600

1000

ns

27

SQE Test Length

600

800

1000

ns

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