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HI-8436 fiches techniques PDF

HOLTIC - 32-Channel Ground/Open or Supply/Open Low Threshold Sensor

Numéro de référence HI-8436
Description 32-Channel Ground/Open or Supply/Open Low Threshold Sensor
Fabricant HOLTIC 
Logo HOLTIC 





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HI-8436 fiche technique
July 2016
HI-8436
32-Channel Ground/Open or Supply/Open
Low Threshold Sensor with SPI Interface
GENERAL DESCRIPTION
The HI-8436 is a 32-channel discrete-to-digital sensor
fabricated with Silicon-on-Insulator (SOI) technology
designed to interface with a Serial Peripheral Interface
(SPI).
Four banks of 8 sense inputs can be programmed as either
GND/Open or Supply/Open sensors. Supply/Open
sensing is also referred to as 28V/Open sensing.
All sense inputs are internally lightning protected to
DO160G, Section 22, Cat AZ, BZ and ZZ without external
components.
The sensing circuit window comparator thresholds are set
by programming the center threshold and hysteresis
registers to values from 0.4V to 5.2V. The digital values of
the sensed inputs can be read either one bank at a time or
all 4 banks with one command.
Each bank of sensors have a VWETn pin available for
application of a voltage to supply pull up current to the
GND/Open sensor.
Interface to the digital subsystem is simple CMOS logic
inputs and outputs. The logic pins are compatible with 3.3V
logic allowing direct connection to a wide range of
microcontrollers or FPGAs.
APPLICATION
· Avionics Discrete to Digital Sensing
PIN CONFIGURATIONS
VWET0 - 1
SENSE_0 - 2
SENSE_1 - 3
SENSE_2 - 4
SENSE_3 - 5
SENSE_4 - 6
SENSE_5 - 7
SENSE_6 - 8
SENSE_7 - 9
SENSE_8-10
SENSE_9-11
HI-8436PQI
HI-8436PQT
HI-8436PQM
33 - SENSE_27
32 - VWET3
31 - SENSE_26
30 - SENSE_25
29 - SENSE_24
28 - SENSE_23
27 - SENSE_22
26 - SENSE_21
25 - SENSE_20
24 - SENSE_19
23 - SENSE_18
44 Pin Plastic Quad Flat Pack (PQFP)
10mm x 10mm
FEATURES
· Robust CMOS Silicon-on-Insulator (SOI) technology
· 32-channel Programmable Sense Operation,
GND/Open or Supply/Open, 4 X 8 Input Sensors
· Programmable HI/LO Threshold and Hysteresis in
0.1V steps, from 0.4V to 5.2V.
· Single Low Voltage Supply Operation for low
thresholds applications.
· Logic Operation from 3.0V to 3.6V
· 20 MHz Serial Peripheral Interface (SPI)
· Lightning Protected Sense Inputs
· Internal Self-Test
VWET0 - 1
SENSE_0 - 2
SENSE_1 - 3
SENSE_2 - 4
SENSE_3 - 5
SENSE_4 - 6
SENSE_5 - 7
SENSE_6 - 8
SENSE_7 - 9
SENSE_8 -10
SENSE_9 -11
HI-8436PCI
HI-8436PCT
HI-8436PCM
33 - SENSE_27
32 - VWET3
31 - SENSE_26
30 - SENSE_25
29 - SENSE_24
28 - SENSE_23
27 - SENSE_22
26 - SENSE_21
25 - SENSE_20
24 - SENSE_19
23 - SENSE_18
44 Pin Plastic QFN
7mm x 7mm
(DS8436 Rev. D)
HOLT INTEGRATED CIRCUITS
www.holtic.com
07/16

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