DS3628 datasheet(3/4 Pages) NSC

3 / 4 page

Switching Characteristics (Continued) (VCC e 5V TA e 25 C) (Note 6)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

tLZ

Delay from Disable Input to High Impedance

CL e 50 pF

RL e 400X to VCC

State (from Logical ‘‘0’’ Level)

to GND

(

Figure 3 )

tHZ

Delay from Disable Input to High Impedance

CL e 50 pF

RL e 400X to GND

State (from Logical ‘‘1’’ Level)

to GND

(

Figure 3 )

AC Test Circuits and Switching Time Waveforms

tSab tSba tr tf

TLF5875 – 4

TLF5875 – 5

FIGURE 1

tZH

TLF5875 – 6

tZL

TLF5875 – 7

TLF5875 – 8

ANY ONE OF EIGHT OUTPUTS

FIGURE 2

tHZ

TLF5875 – 9

tLZ

TLF5875 – 10

TLF5875 – 11

FIGURE 3

Note 1

‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed Except for ‘‘Operating Temperature Range’’

they are not meant to imply that the devices should be operated at these limits The table of ‘‘Electrical Characteristics’’ provides conditions for actual device

operation

Note 2

Unless otherwise specified minmax limits apply across the b55 Cto a125 C temperature range for the DS1628 and across the 0 Cto a70 C range for

the DS3628 All typical values are for TA e 25 C and VCC e 5V

Note 3

All currents into device pins shown as positive all currents out of device pins shown as negative all voltages references to ground unless otherwise noted

All values shown as max or min on absolute value basis

Note 4

The pulse generator has the following characteristics ZOUT e 50X and PRR s 1 mHz Rise and fall times between 10% and 90% points s 5 ns

Note 5

CL includes probe and jig capacitance

Note 6

When measuring output drive current and switching response for the DS1628 and DS3628 a 15X resistor should be placed in series with each output

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