HI-8422PQI Holt Integrated Circuits, HI-8422PQI Datasheet

no-image

HI-8422PQI

Manufacturer Part Number
HI-8422PQI
Description
Manufacturer
Holt Integrated Circuits
Datasheet

Specifications of HI-8422PQI

Operating Temperature (min)
-40C
Operating Temperature Classification
Industrial
Operating Temperature (max)
85C
Package Type
PQFP
Rad Hardened
No
Lead Free Status / Rohs Status
Not Compliant
DESCRIPTION
The HI-8422 is a sixteen channel discrete-to-digital
interface device. The device has eight channels designed
to sense 28 V / Open signals and eight channels that sense
Open / Ground signals. Data is multiplexed from each bank
of sensors to an eight bit digital databus. Mixed-signal
CMOS technology is used to provide superior low-power
performance. The device outputs are CMOS / TTL
compatible and may be disabled (tri-state) using the
and
The HI-8422 is offered in a small footprint 32-pin Plastic
Quad Flat Package (PQFP). Please contact the Holt sales
department for other packaging options.
(DS8422 Rev. G)
FUNCTION TABLE
August 2010
28 Volts
Inputs
Open
28V
OE
X
X
X
X
pins.
Ground
Inputs
Open
0 V
X
X
X
X
A0
X
X
1
1
0
0
Sensing 28 Volt / Open and Open / Ground Signals
CE
X
0
0
0
0
1
OE
X
0
0
0
0
1
HOLT INTEGRATED CIRCUITS
Output
High Z
High Z
1
0
0
1
16-Channel Discrete-to-Digital Interface
www.holtic.com
CE
!
!
!
!
!
FEATURES
8 independent 28 Volt / Open sensing channels
8 independent Open / Ground sensing channels
Low power CMOS technology
Industrial and Extended temperature ranges
5.0 V single supply operation
PIN CONFIGURATION
28VIN3 - 1
28VIN4 - 3
28VIN5 - 5
28VIN6 - 7
0VIN3 - 2
0VIN4 - 4
0VIN5 - 6
0VIN6 - 8
32 Pin PQFP package
HI-8422PQT
HI-8422PQI
&
HI-8422
24 - N/C
23 - D3
22 - N/C
21 - 0VIN8
20 - 28VIN8
19 - D4
18 - D5
17 - D6
08/10

Related parts for HI-8422PQI

HI-8422PQI Summary of contents

Page 1

... V single supply operation ! Low power CMOS technology CE ! Industrial and Extended temperature ranges PIN CONFIGURATION OE Output 28VIN3 - 0VIN3 - 2 28VIN4 - 0VIN4 - 28VIN5 - 5 0VIN5 - 28VIN6 - 7 X High Z 0VIN6 - 8 1 High Z HOLT INTEGRATED CIRCUITS www.holtic.com HI-8422 N/C HI-8422PQI 21 - 0VIN8 & 28VIN8 HI-8422PQT Pin PQFP package 08/10 ...

Page 2

... Volt / Open sensing input, channel 7 Open / Ground sensing input, channel 7 Output Enable. D1-D8 are high-impedance if Chip Enable. D1-D8 are high-impedance if When A0 is high outputs data from 28V comparators When A0 is low show results from 0V comparators Positive supply voltage 5.0 V Logic output, channel 8 ...

Page 3

... BLOCK DIAGRAM 3.6V Reference 66 K 28VIN1 28VIN2 28VIN3 28VIN4 28VIN5 28VIN6 28VIN7 28VIN8 0VIN1 5 K 0VIN2 5 K 0VIN3 5 K 0VIN4 5 K 0VIN5 5 K 0VIN6 5 K 0VIN7 5 K 0VIN8 GND A0 HI-8422 + - + - + - + - + - + - + - + - 8 x 2:1 MUX 3.25V Reference HOLT INTEGRATED CIRCUITS ...

Page 4

... Industrial Screening ......... - 350 mW Hi-Temp Screening ........ 275°C for 10 sec -65°C to +150°C ratings or outside recommended operating conditions may cause SYMBOL CONDITION V Input voltage to give high output SO V Input voltage to give low output S28 I Maximum input current SO to give high output I Minimum input current ...

Page 5

... 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 T where V is the nominal input switching threshold, and the value of the external series resistor in Kohms. ORDERING INFORMATION HI - 8422PQ x x HI-8422 ...

Page 6

... REVISION HISTORY P/N Rev Date Description of Change DS4422 G 08/04/10 Removed reference to lightning protected inputs throughout datasheet, changed discrete input voltage range and clarified temperature ranges in Features. HI-8422 HOLT INTEGRATED CIRCUITS 6 ...

Page 7

... BSC SQ (7.00) .055 .002 ± (1.4 ± .05) .003 .004 .002 ± (.08) (0.10 ± .05) Detail A HOLT INTEGRATED CIRCUITS 7 inches (millimeters) Package Type: 32PTQS .0315 BSC (0.80) .015 .003 ± (0.375 ± .075) .024 .006 ± (0.60 ± .15) .006 .002 ± ...

Related keywords