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 2000 Semtech Corp.

www.semtech.com

EDGE HIGH-PERFORMANCE PRODUCTS

Edge142

AC Characteristics

Parameter

Symbol

Min

Typ

Max

Units

Propagation Delays

Minimum Delay (Pulse Width >= 1.0 ns)

VDELAY = +0.1V, VFALL = +0.1V

TPDmin

1.75

2.05

2.45

ns

Delay Range vs. Pulse Width

Input Pulse Width >= 1.0 ns

(+0.1V < VDELAY < -1.2V)

Tspan

1.1

1.4

ns

VFALL Range of Adjustment

Input Pulse Width >= 1.0 ns

(+0.1V < VFALL < -1.2V)

Tfall

170

300

ps

Propagation Delay Tempco (Note 1)

-1.1V <= VDELAY, VFALL <= +0.1V

<2

Output Rise/Fall Times (20% to 80%) (Note 1)

Tr, Tf

300

420

500

ps

Test conditions (unless otherwise specified): “Recommended Operating Conditions” with TA = 25

°C with 400

LFPM of airflow, and all outputs terminated with 50

Ω to –2.0 V. Timing reference points at the differential

crossing points for input and output signals, REXT1 = 2.94 K

Ω, and REXT2 = 2.94 KΩ. All input signals are

fully differential. Values are based on nominal temperature and a supply voltage of –5.2 V.

Note 1: Based upon characterization data. Not production tested. For more complete data, refer to the

application information section of the data sheet.

The specified limits shown can be met only after thermal equilibrium has been established. Thermal equilibrium

is established by applying power for at least 2 minutes while maintaining a transverse air flow of 400 linear

feet per minute over the device mounted either in the test socket or on the printed circuit board.