Holt HI-8421-10 6-channel / 8-channel discrete-to-digital interface Datasheet

HI-8421, HI-8424
6-Channel / 8-Channel Discrete-to-Digital Interface
Sensing 28V / Open Signals
August 2010
DESCRIPTION
FEATURES
The HI-8421 is a six channel discrete-to-digital interface
device.The HI-8424 has eight channels. Mixed-signal
CMOS technology is used to provide superior low-power
performance. The device inputs are configured to sense
28V / 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 28V / Open sensing channels
The HI-8421 is a drop-in replacement for the DEI1054.
! HI-8421 is a drop in replacement for DEI1054
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 Temperatures
IN1 1
16 GND
IN2 2
15 OUT1
IN3 3
IN4 4
IN5 5
VDD
14 OUT2
HI-8421PSI
HI-8421PST
13 OUT3
12 OUT4
OE
IN6 6
11 OUT5
CE
OE 7
10 OUT6
CE 8
9 VDD
3.6V Reference
+
66 K
-
IN1
OUT1
29 K
16-Pin Plastic SOIC package
(Narrow Body)
+
66 K
IN2
-
OUT2
29 K
+
66 K
IN3
-
OUT3
29 K
+
66 K
IN4
-
OUT4
29 K
+
66 K
IN5
-
OUT5
IN1 1
IN2 2
IN3 3
IN4 4
IN5 5
IN6 6
IN7 7
OE 8
CE 9
VDD 10
29 K
-
OUT6
29 K
FUNCTION TABLE
+
66 K
IN7
-
OUT7
29 K
+
66 K
-
IN8
29 K
GND
(DS8421 Rev. F)
GND
OUT1
OUT2
OUT3
IN8
OUT4
OUT5
OUT6
OUT7
OUT8
20 Pin TSSOP package
+
66 K
IN6
HI-8424PTI
HI-8424PTT
20
19
18
17
16
15
14
13
12
11
OUT8
Discrete
Input
CE
OE
Output
Open
0
0
1
28 Volts
0
0
0
X
1
X
High Z
X
X
1
High Z
HOLT INTEGRATED CIRCUITS
www.holtic.com
08/10
HI-8421, HI-8424
PIN DESCRIPTIONS
PIN
(HI-8421) (HI-8424)
SYMBOL
FUNCTION
DESCRIPTION
1
1
IN1
Discrete Input
28 Volt / Open sensing input, channel 1
2
2
IN2
Discrete Input
28 Volt / Open sensing input, channel 2
3
3
IN3
Discrete Input
28 Volt / Open sensing input, channel 3
4
4
IN4
Discrete Input
28 Volt / Open sensing input, channel 4
5
5
IN5
Discrete Input
28 Volt / Open sensing input, channel 5
6
6
IN6
Discrete Input
28 Volt / Open sensing input, channel 6
28 Volt / Open 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
28 Volt / Open 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
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
Ground
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
Open state input voltage
VSO
Input voltage to give high output
-5
28 V state input voltage
VS28
Input voltage to give low output
14
Open state input current
ISO
Maximum input current
to give high output
28 V state input current
IS28
Minimum input current
to give low output
197
Input resistance
RIN
0 V < VIN < 16 V
71
Input current at 28 V
IIN28
VIN = 28 V
TYP
MAX
UNITS
10
V
DISCRETE INPUTS
HOLT INTEGRATED CIRCUITS
2
V
84
µA
µA
119
KW
394
µA
HI-8421, HI-8424
ELECTRICAL CHARACTERISTICS (Cont.)
VDD = 5.0V ± 10%, GND = 0V, TA = Operating Temperature Range (unless otherwise specified).
PARAMETER
SYMBOL
CONDITION
MIN
TYP
MAX
UNITS
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 = 0 V (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
500
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
TIMING DIAGRAMS
CE or OE
INx
tZL, tZH
tZL, tZH
tLH
tHL
OUTx
OUTx
Output Enable Timing
Input to Output Propagation Delay
ORDERING INFORMATION
HI - 842xxx x x
PART
NUMBER
Blank
F
PART
NUMBER
LEAD
FINISH
Tin / Lead (Sn / Pb) Solder
100% Matte Tin (Pb-free, RoHS compliant)
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
8421PS
16 PIN PLASTIC NARROW BODY SOIC (16HN)
8424PT
20 PIN PLASTIC TSSOP (20HT)
HOLT INTEGRATED CIRCUITS
3
HI-8421, HI-8424
REVISION HISTORY
P/N
DS8421
Rev
Date
F
08/04/10
Description of Change
Removed reference to lightning protection throughout datasheet and added reference to
available temperature ranges.
HOLT INTEGRATED CIRCUITS
4
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
5
BSC = “Basic Spacing between Centers”
is theoretical true position dimension and
has no tolerance. (JEDEC Standard 95)
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