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Timing Requirements

A-to-B Switching Characteristics

SN74GTL1655

16-BIT LVTTL-TO-GTL/GTL+ UNIVERSAL BUS TRANSCEIVER

WITH LIVE INSERTION

SCBS696I – JULY 1997 – REVISED APRIL 2005

over recommended ranges of supply voltage and operating free-air temperature,

V

MIN

MAX

UNIT

Clock frequency

160

MHz

LE high

3

Pulse duration

ns

CLK high or low

3

Data before CLK

↑

2.7

Setup time

CLK high

2.8

ns

Data before LE

↓

CLK low

2.6

Data after CLK

↑

0.4

Hold time

ns

Data after LE

↓

CLK high or low

0.9

over recommended ranges of supply voltage and operating free-air temperature,

V

FROM

TO

PARAMETER

MIN

TYP

MAX

UNIT

(INPUT)

(OUTPUT)

160

MHz

3.1

5.2

A

B

ns

2.6

6.2

3.4

5.5

CLK

B

ns

2.4

5.8

3.5

5.8

LEAB

B

ns

2.6

6.4

3.3

5.4

OEAB or OE

B

ns

2.7

5.9

2.3

4.3

A

B

ns

1.9

4.3

2.7

4.8

CLK

B

ns

1.8

4.3

2.8

4.9

LEAB

B

ns

2

4.8

2.5

4.5

OEAB or OE

B

ns

2

4.2

0.6

Transition time, B outputs (0.6 V to 1 V)

ns

1.2

1.1

Transition time, B outputs (1 V to 0.6 V)

ns

1.7

Skew between drivers in the same package

1

ns

switching in the same direction

Skew between drivers

1

ns

switching in any direction in the same package

(1)

Skew values are applicable for through mode only.

(2)

Skew values are applicable for CLK mode only, with all outputs switching simultaneously.

8