HOLT INTEGRATED CIRCUITS

5

HI-8422

ORDERING INFORMATION

TIMING DIAGRAMS

t, t

ZL

ZH

CE

OE

or

Dx

Output Enable Timing

t, t

ZL

ZH

INx

Input to Output Propagation Delay

Dx

A0

LIGHTNING PROTECTION

The HI-8422’s 28V / Open Sensing inputs will survive light-

ning testing to DO-160D, Level 3 waveforms 3, 4 and 5A

without external components. The Open / Ground inputs will

survive waveforms 3 and 4 without external components. In

order to guarantee survival to waveform 5A an external se-

ries resistor of at least 3.3K

is recommended.

W

INPUT SWITCHING THRESHOLD

The input switching threshold of the Open / Ground inputs

will decrease with increasing series resistance according to

the function

V = 3.25 - 0.1R

where V is the nominal input switching threshold, and R is

the value of the external series resistor in Kohms.

T

T

SWITCHING CHARACTERISTICS

Propagation delay

IN to OUT

t

, t

500

ns

Output enable time

t , t

From

or

25

ns

Output disable time

t , t

From

or

25

ns

A0 Set-up time

t

0

ns

A0 Hold time

t

0

ns

PARAMETER

SYMBOL

CONDITION

MIN

TYP

MAX

UNITS

LH

HL

ZL

ZH

LZ

HZ

SU

HOLD

CE

OE

CE

OE

AC ELECTRICAL CHARACTERISTICS

VDD = 5.0V

, GND = 0V, T = Operating Temperature Range (unless otherwise specified).

A

± 10%

PACKAGE

DESCRIPTION

TEMPERATURE

RANGE

32 PIN PLASTIC QUAD FLATPACK (PQFP)

FLOW

BURN

IN

-40°C TO +85°C

NO

I

-55°C TO +125°C

NO

T

HI - 8422PQ x x

PART

NUMBER

T

I

PART

NUMBER

8422PQ

LEAD

FINISH

PART

NUMBER

100% Matte Tin (Pb-free, RoHS compliant)

F

Tin / Lead (Sn / Pb) Solder

Blank