CF5072BA

SEIKO NPC CORPORATION —6

AC Characteristics

Recommended operating conditions apply unless otherwise noted

Parameter

Symbol

Conditions

Rating

Unit

Min

Typ

Max

Output duty cycle 1

Duty1

Measurement circuit 1, measured at output

crossing point, Ta = 25

45

50

55

%

Output duty cycle 2

Duty2

Measurement circuit 1, measured at 50% output

swing, Ta = 25

45

50

55

%

Output swing

Measurement circuit 1, peak-to-peak of output

waveform

0.4

–

–

V

Output rise time

Measurement circuit 1, output swing 20% to 80%

–

0.5

1

ns

Output fall time

Measurement circuit 1, output swing 80% to 20%

–

0.5

1

ns

Output enable delay time

Measurement circuit 3, Ta = 25

°C

–

–

200

ns

Output disable delay time

Measurement circuit 3, Ta = 25

°C

–

–

200

ns

Figure 1. PECL output waveform

Figure 2. OE timing waveform (Differential LVPECL)

OUTN

OUT

80%

20%

DUTY1 = (

OE

GND

GND

OUT

OUTN

LOW-level

(High impedance)