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PDF HI-8422 Data sheet ( Hoja de datos )
| Número de pieza | HI-8422 | |
| Descripción | 16-Channel Discrete-to-Digital Interface | |
| Fabricantes | HOLTIC | |
| Logotipo |  |
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September 2014
HI-8422
16-Channel Discrete-to-Digital Interface
Sensing 28 Volt / Open and Open / Ground Signals
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 CE
and OE pins.
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.
FEATURES
! 8 independent 28 Volt / Open sensing channels
! 8 independent Open / Ground sensing channels
! 5.0 V single supply operation
! Low power CMOS technology
! Industrial and Extended temperature ranges
PIN CONFIGURATION
FUNCTION TABLE
28V 0 V A0 CE OE Output
Inputs Inputs
Open X 1 0 0 1
28 Volts
X
10 00
X Open 0 0 0 0
X Ground 0 0 0 1
X X X 1 X High Z
X X X X 1 High Z
28VIN3 - 1
0VIN3 - 2
28VIN4 - 3
0VIN4 - 4
28VIN5 - 5
0VIN5 - 6
28VIN6 - 7
0VIN6 - 8
HI-8422PQI
&
HI-8422PQT
24 - N/C
23 - D3
22 - N/C
21 - 0VIN8
20 - 28VIN8
19 - D4
18 - D5
17 - D6
32 Pin PQFP package
(DS8422 Rev. H)
HOLT INTEGRATED CIRCUITS
www.holtic.com
09/14
1 page  
HI-8422
AC ELECTRICAL CHARACTERISTICS
VDD = 5.0V ± 10%, GND = 0V, TA = Operating Temperature Range (unless otherwise specified).
PARAMETER
SYMBOL
CONDITION
SWITCHING CHARACTERISTICS
Propagation delay
Output enable time
Output disable time
A0 Set-up time
A0 Hold time
IN to OUT
tLH, tHL
tZL, tZH
tLZ, tHZ
tSU
tHOLD
From CE or OE
From CE or OE
TIMING DIAGRAMS
MIN TYP MAX UNITS
500 ns
25 ns
25 ns
0 ns
0 ns
A0
CE or OE
tZL, tZH
Dx
tSU
tHOLD
tZL, tZH
INx
tHL
Dx
tLH
Output Enable Timing
Input to Output Propagation Delay
INPUT SWITCHING THRESHOLD
The input switching threshold of the Open / Ground inputs
will decrease with increasing series resistance according to
the function
VT = 3.25 - 0.1R
where VT is the nominal input switching threshold, and R
is the value of the external series resistor in Kohms.
ORDERING INFORMATION
HI - 8422PQ x x
PART
NUMBER
Blank
F
PART
NUMBER
I
T
PART
NUMBER
8422PQ
LEAD
FINISH
Tin / Lead (Sn / Pb) Solder
100% Matte Tin (Pb-free, RoHS compliant)
TEMPERATURE
RANGE
-40°C TO +85°C
-55°C TO +125°C
FLOW
I
T
BURN
IN
NO
NO
PACKAGE
DESCRIPTION
32 PIN PLASTIC QUAD FLATPACK PQFP (32PTQS)
HOLT INTEGRATED CIRCUITS
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet HI-8422.PDF ] | |
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