TLK2701

1.6 TO 2.7 GBPS TRANSCEIVER

SLLS429D − AUGUST 2000 − REVISED MARCH 2008

13

POST OFFICE BOX 655303

TTL output switching characteristics over recommended operating conditions (unless otherwise

noted)

PARAMETER

TEST CONDITIONS

MIN

NOM

MAX

UNIT

High-level output voltage

1.7

2.3

V

Low-level output voltage

GND

0.25

0.5

V

Slew rate (rising), magnitude of RX_CLK, RKLSB,

RKMSB/LOS, RXD

0.8 V to 2 V, C = 5 pF, See Figure 11

0.5

V/ns

Slew rate (falling), magnitude of RX_CLK, RKLSB,

RKMSB/LOS, RXD

0.8 V to 2 V, C = 5 pF, See Figure 11

0.5

V/ns

↑

50% voltage swing,

GTX_CLK = 80 MHz, See Figure 11,

5.4

ns

RXD, RKMSB/LOS, RKLSB setup to

↑ RX_CLK

50% voltage swing,

GTX_CLK = 135 MHz, See Figure 11,

2.7

ns

↑

50% voltage swing,

GTX_CLK = 80 MHz, See Figure 11,

5.4

ns

RXD, RKMSB/LOS, RKLSB hold to

↑ RX_CLK

50% voltage swing,

GTX_CLK = 135 MHz, See Figure 11,

2.7

ns

RXD[0−15]

2.0 V

0.8 V

2.0 V

0.8 V

RX_CLK

RKLSB, RKMSB,

0 V

2.7 V

0 V

2.7 V

Figure 7. TTL Data Output Valid Levels for AC Measurements