hi-8423ptt Holt Integrated Circuits, Inc., hi-8423ptt Datasheet

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hi-8423ptt

Manufacturer Part Number
hi-8423ptt
Description
6-channel / 8-channel Discrete-to-digital Interface Sensing Open / Ground Signals
Manufacturer
Holt Integrated Circuits, Inc.
Datasheet
DESCRIPTION
The HI-8420 is a six channel discrete-to-digital interface
device. The HI-8423 has eight channels. Mixed-signal
CMOS technology is used to provide superior low-power
performance. The device inputs are configured to sense
Ground / Open discrete signals. The device outputs are
CMOS / TTL compatible and may be disabled (tri-state)
using the
The HI-8420 is a drop-in replacement for the DEI1026.
For added functionality, the Holt HI-8422 offers eight
channels of Open / Ground sensing and eight channels of
28V / Ground sensing in a single device.
BLOCK DIAGRAM
(DS8420 Rev. D)
March 2007
GND
V
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
OE
CE
DD
CE
and
5K
5K
5K
5K
5K
5K
5K
5K
OE
pins.
9K
9K
9K
9K
9K
9K
9K
9K
9K
+
+
+
+
+
+
+
+
-
-
-
-
-
-
-
-
-
5K
6-Channel / 8-Channel Discrete-to-Digital Interface
3.25V Reference
HOLT INTEGRATED CIRCUITS
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
www.holtic.com
HI-8420, HI-8423
!
!
!
!
!
PIN CONFIGURATIONS
FEATURES
FUNCTION TABLE
Sensing Open / Ground Signals
6 or 8 independent Open / Ground sensing channels
Low power CMOS technology
Lightning protected inputs to DO-160D level 3
HI-8420 is a drop in replacement for DEI1026
5.0V single supply operation
Discrete
Ground
Open
Input
VDD 10
16-Pin Plastic SOIC package
X
X
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN1 1
IN2 2
IN3 3
IN4 4
IN5 5
IN6 6
OE
CE
OE
CE
20 Pin TSSOP package
7
8
1
2
3
4
5
6
7
8
9
(Narrow Body)
HI-8420PST
HI-8420PSI
HI-8423PTT
HI-8423PTI
CE
0
0
1
X
OE
X
16 GND
15 OUT1
14 OUT2
13 OUT3
12 OUT4
11 OUT5
10 OUT6
9 VDD
0
0
1
20 GND
19 OUT1
18 OUT2
17 OUT3
16 IN8
15 OUT4
14 OUT5
13 OUT6
12 OUT7
11 OUT8
Output
High Z
High Z
0
1
03/07

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hi-8423ptt Summary of contents

Page 1

... GND 15 OUT1 14 OUT2 HI-8420PSI 13 OUT3 HI-8420PST 12 OUT4 11 OUT5 10 OUT6 9 VDD (Narrow Body GND 2 19 OUT1 3 18 OUT2 4 17 OUT3 HI-8423PTI 5 16 IN8 HI-8423PTT 6 15 OUT4 7 14 OUT5 8 13 OUT6 9 12 OUT7 11 OUT8 CE OE Output High Z X ...

Page 2

... Open / Ground sensing input, channel 6 Discrete Input Open / Ground sensing input channel 7 Digital input Output Enable. OUT1-OUT8 are high-impedance if Digital input Chip Enable. OUT1-OUT8 are high-impedance if Power Positive supply voltage 5.0 V Tri-state output Logic output, channel 8 Tri-state output Logic output, channel 7 Tri-state output ...

Page 3

... Industrial Screening ......... 275°C for 10 sec Hi-Temp Screening ........ -65°C to +150°C ratings or outside recommended operating conditions may cause SYMBOL CONDITION V Input voltage to give high output SG V Input voltage to give low output SO R Resistor from input to ground IG to give high output ...

Page 4

... ZL ZH OUTx 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 where V is the nominal input switching threshold, T and R is the value of the external series resistor in Kohms ...

Page 5

PLASTIC SMALL OUTLINE (SOIC (Narrow Body) .390 ± .004 (9.90 ± .10) .236 ±.008 Top View (5.99 ±.20) .0165 ± .003 (.419 ± .089) .050 BSC (1.27) BSC = “Basic Spacing between Centers” is theoretical true position ...

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