DS16149 datasheet(3/6 Pages) NSC

3 / 6 page

Switching Characteristics (VCC e 5V TA e 25 C) (Note 4) (Continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Rise Time

(

Figure 1 )CL e 50 pF

CL e 500 pF

tLH

Delay from Disable Input

RL e 2kX to Gnd

to Logical ‘‘1’’

CL e 50 pF (Figure 2 )

tHL

Delay from Disable Input

RL e 2kX to VCC

to Logical ‘‘0’’

CL e 50 pF (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 DS16149 and DS16179 and across the 0 Cto

70 C range for the DS36149 and DS36179 All typical values are for TA e 25 C and VCC e 5V

Note 3

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

as max or min on absolute value basis

Note 4

When measuring output drive current and switching response for the DS16179 and DS36179 a 15 X resistor should be placed in series with each output

This resistor is internal to the DS16149DS36149 and need not be added

Connection Diagram

Dual In-Line Package

TLF7553 – 2

Top View

Order Number DS16149J DS36149J DS16179J

DS36179J DS36149N or DS36179N

See NS Package Number J16A or N16A

Truth Table

Disable Input

Input

Output

DIS 1

DIS2

X e Don’t care

AC Test Circuits and Switching Time Waveforms

tSg tSg tR tF

TLF7553 – 3

FIGURE 1

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