Holt HI-8420PSIF 6-channel / 8-channel discrete-to-digital interface Datasheet

HI-8420, HI-8423
6-Channel / 8-Channel Discrete-to-Digital Interface
Sensing Open / Ground Signals
August 2010
DESCRIPTION
FEATURES
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 CE and OE pins.
! 6 or 8 independent Open / Ground sensing channels
The HI-8420 is a drop-in replacement for the DEI1026.
! HI-8420 is a drop in replacement for 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.
PIN CONFIGURATIONS
BLOCK DIAGRAM
! 5.0V single supply operation
! Low power CMOS technology
! Industrial and Extended temperature ranges
IN1 1
16 GND
IN2 2
15 OUT1
IN3 3
IN4 4
OE
IN5 5
CE
VDD
IN1
5K
9K
+
OUT1
IN2
5K
9K
+
OUT2
IN3
5K
9K
+
OUT3
IN4
5K
9K
+
OUT4
-
IN5
5K
9K
+
OUT5
IN6
5K
9K
5K
+
OE 7
10 OUT6
CE 8
9 VDD
16-Pin Plastic SOIC package
(Narrow Body)
IN1 1
IN2 2
IN3 3
IN4 4
IN5 5
IN6 6
IN7 7
OE 8
CE 9
VDD 10
HI-8423PTI
HI-8423PTT
20
19
18
17
16
15
14
13
12
11
GND
OUT1
OUT2
OUT3
IN8
OUT4
OUT5
OUT6
OUT7
OUT8
20 Pin TSSOP package
OUT7
FUNCTION TABLE
9K
+
IN8
OUT8
9K
(DS8420 Rev. E)
11 OUT5
OUT6
-
GND
12 OUT4
9K
IN7
5K
13 OUT3
IN6 6
+
-
14 OUT2
HI-8420PSI
HI-8420PST
5K
3.25V Reference
Discrete
Input
CE
OE
Output
Open
0
0
0
Ground
0
0
1
X
1
X
High Z
X
X
1
High Z
HOLT INTEGRATED CIRCUITS
www.holtic.com
08/10
HI-8420, HI-8423
PIN DESCRIPTIONS
PIN
(HI-8420) (HI-8423)
SYMBOL
FUNCTION
DESCRIPTION
1
1
IN1
Discrete Input
Open / Ground sensing input, channel 1
2
2
IN2
Discrete Input
Open / Ground sensing input, channel 2
3
3
IN3
Discrete Input
Open / Ground sensing input, channel 3
4
4
IN4
Discrete Input
Open / Ground sensing input, channel 4
5
5
IN5
Discrete Input
Open / Ground sensing input, channel 5
6
6
IN6
Discrete Input
Open / Ground sensing input, channel 6
Open / Ground sensing input channel 7
-
7
IN7
Discrete Input
7
8
OE
Digital input
Output Enable. OUT1-OUT8 are high-impedance if OE is high
8
9
CE
Digital input
Chip Enable. OUT1-OUT8 are high-impedance if CE is high
9
10
VDD
Power
-
11
OUT8
Tri-state output
Logic output, channel 8
Positive supply voltage 5.0 V
-
12
OUT7
Tri-state output
Logic output, channel 7
10
13
OUT6
Tri-state output
Logic output, channel 6
11
14
OUT5
Tri-state output
Logic output, channel 5
12
15
OUT4
Tri-state output
Logic output, channel 4
-
16
IN8
Discrete Input
Open / Ground sensing input, channel 8
13
17
OUT3
Tri-state output
Logic output, channel 3
14
18
OUT2
Tri-state output
Logic output, channel 2
15
19
OUT1
Tri-state output
Logic output, channel 1
16
20
GND
Power
Ground
HOLT INTEGRATED CIRCUITS
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HI-8420, HI-8423
ABSOLUTE MAXIMUM RATINGS
Supply voltage (VDD)
Logic input voltage range
Discrete input voltage range
Power dissipation at 25°C
Solder temperature
Storage temperature
-0.3 V to +7 V
-0.3 V to +5.5 V
-80 V to + 80 V
350 mW
275°C for 10 sec
-65°C to +150°C
RECOMMENDED
OPERATING CONDITIONS
Supply Voltage
VDD .................................. 4.5 V to 5.5 V
Operating Temperature Range
Industrial Screening .........
-40°C to +85°C
Hi-Temp Screening ........
-55°C to +125°C
NOTE: Stresses above absolute maximum ratings or outside recommended operating conditions may cause
permanent damage to the device. These are stress ratings only. Operation at the limits is not recommended.
ELECTRICAL CHARACTERISTICS
VDD = 5.0V ± 10%, GND = 0V, TA = Operating Temperature Range (unless otherwise specified).
PARAMETER
SYMBOL
CONDITION
MIN
Ground state input voltage
VSG
Input voltage to give high output
Open state input voltage
VSO
Input voltage to give low output
3.5
Ground state input resistor
RIG
0
Open state input resistor
RIO
Resistor from input to ground
to give high output
Resistor from input to ground
to give low output
Input source current
IIO
Current sourced into 100W
Reverse leakage current
IIR
VIN = 35 V, VDD = 0 V
TYP
MAX
UNITS
3.0
V
DISCRETE INPUTS
V
100
KW
100
-100
W
-330
µA
to ground
5.0
mA
LOGIC INPUTS (CE, OE)
Input Voltage
Input voltage HI
VIH
Input voltage LO
VIL
Input sink
IIH
VIH = VDD
Input source
IIL
VIL = 0 V
-1.0
High
VOH
IOH = -5 mA
2.4
Low
VOL
IOL = 5 mA
High
VOH
IOH = -100 uA
Low
VOL
IOL = 100 uA
0.2
V
IOZ
VOUT = 0 V or VDD
±10
µA
IDD
VIN = VDD (all inputs)
10
mA
Input current
2.0
V
0.8
V
1.0
µA
µA
OUTPUTS
Logic output voltage
Logic output voltage (CMOS)
Tri-state output current
V
0.4
VDD - 0.2
V
V
SUPPLY CURRENT
VDD current
5
SWITCHING CHARACTERISTICS
Propagation delay
150
ns
Output enable time
IN to OUT
tLH, tHL
tZL, tZH
From CE or OE
25
ns
Output disable time
tLZ, tHZ
From CE or OE
25
ns
HOLT INTEGRATED CIRCUITS
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HI-8420, HI-8423
TIMING DIAGRAMS
CE or OE
INx
tZL, tZH
tZL, tZH
tLH
tHL
OUTx
OUTx
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 - 842xxx x x
LEAD
FINISH
PART
NUMBER
Blank
Tin / Lead (Sn / Pb) Solder
100% Matte Tin (Pb-free, RoHS compliant)
F
PART
NUMBER
TEMPERATURE
RANGE
FLOW
BURN
IN
I
-40°C TO +85°C
I
NO
T
-55°C TO +125°C
T
NO
PART
NUMBER
PACKAGE
DESCRIPTION
8420PS
16 PIN PLASTIC NARROW BODY SOIC (16HN)
8423PT
20 PIN PLASTIC TSSOP (20HT)
HOLT INTEGRATED CIRCUITS
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HI-8420, HI-8423
REVISION HISTORY
P/N
DS8420
Rev
Date
E
08/04/10
Description of Change
Removed reference to lightning protected inputs throughout datasheet, increased discrete
input voltage range and added reference to available temperature ranges.
HOLT INTEGRATED CIRCUITS
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PACKAGE DIMENSIONS
16-PIN PLASTIC SMALL OUTLINE (SOIC) - NB
(Narrow Body)
Package Type: 16HN
.0087 ± .0015
(.220 ± .029)
.390 ± .004
(9.90 ± .10)
.236 ±.008
(5.99 ±.20)
inches (millimeters)
.1525 ± .0025
(3.87 ± .06)
Top View
See Detail A
.0165 ± .003
(.419 ± .089)
.061 ± .007
(1.549 ± .178)
.050
BSC
(1.27)
0° to 8°
.0025 ± .002
(.064 ± .038)
.033 ± .017
(.838 ± .432)
BSC = “Basic Spacing between Centers”
is theoretical true position dimension and
has no tolerance. (JEDEC Standard 95)
Detail A
20-PIN PLASTIC TSSOP
inches (millimeters)
Package Type: 20HT
0.252 (6.400)
0.259 (6.600)
Gate Plane
0.010 (0.254)
0° to 8°
0.169 (4.300)
0.177 (4.500)
Pin 1
0.246 (6.250)
0.258 (6.550)
0.018 (0.450)
0.029 (0.750)
Detail A
0.035 (0.889)
0.047 (1.200)
.031 (0.800)
.041(1.050)
0.004 (0.090)
0.008 (0.200)
See Detail A
.025
BSC
(.65)
0.007 (0.190)
0.012 (0.300)
0.002 (0.050)
0.006 (0.150)
HOLT INTEGRATED CIRCUITS
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BSC = “Basic Spacing between Centers”
is theoretical true position dimension and
has no tolerance. (JEDEC Standard 95)
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